It often happens that before painting a used car, we discover a through hole formed due to corrosion. What can be done in this case, if we leave the topic of professional body repair and high costs. Is it possible to fix the hole yourself, and if so, how to do it? All this will be discussed below.
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Of course, the possibility of carrying out independent body repairs is related to the level of damage to the car. For example, if a through hole is noticed in only one place, and the entire body or its part is not completely rotten, you can begin to repair it yourself. In other words, if there is a partial problem, and not a set of defects, it is 100% possible to do without specialists.
Note. In addition, it is important to eliminate through holes with your own hands only if they are not too large. Otherwise, you will have to order a professional service.
Filling holes in the body with putty
As a rule, holes most often appear on the bottom of the car. And in this case, everything around is thoroughly cleaned, car cosmetics (rust converter) and many other kits are used. Degreasing and priming are also required.
The technology of direct application of putty, without the use of a patch, involves application from the back side of the lining area. In this way, it will be possible to significantly achieve maximum fixation of the composition. You can use a metal mesh instead of a lining as such. These are even sold in stores, you can make them yourself, etc.
The putty must be evenly distributed over the surface, filling the entire space of the hole. After the solution has dried, the area is treated with painting putty. Then, after drying, they paint and put on a protective film.
This option for eliminating a through hole in the body is the simplest. Experts, however, do not recommend using it, since the putty will begin to leak moisture over time and will collapse. This method is most suitable if restoration is urgently needed and there are no other alternatives.
How to eliminate a leak in a pipe at a threaded connection
In cases where leaks occur at the joints of pipes connected by threads, it is worth using FUM tape or linen thread with a special waterproof impregnation. Initially, you should remove the old seal from the thread. Currently, FUM tape is produced in the following types: FUM-1 - with vaseline-based lubricant. Used in industrial piping systems. FUM-2 – contains no lubricant; Can be used for acidic environments FUM-3 – used for pipes without aggressive media
Algorithm for carrying out the process of eliminating a through hole by applying a patch with a soldering iron
Here's what to do:
- To begin with, it is recommended to thoroughly clean the rust from the corrosive area. You can use attachments and a drill (also another set of tools).
- A patch is cut from a piece of metal sheet. An option is to use a can of auto chemicals, etc.
The patch must cover the entire hole on the vehicle frame element.
- A powerful soldering iron is prepared, with which the patch is applied.
It is also recommended to use anti-rust compounds, otherwise called orthophoric acid. Another help will be the use of tin solder.
- Now you need to tin the edges of the patch.
Particular attention is paid to the edges of the hole where the patch will be placed.
- A piece of metal is soldered with a continuous seam.
- It is checked by measuring whether the patch does not protrude above the surface of the body like a bubble.
You can diagnose the protrusion using a flexible ruler.
- The protrusion (if detected) is recessed with gentle blows of the hammer.
Once the patch is recessed, there is bound to be a small gap. It will need to be leveled using putty. We must not forget that the thickness of the putty layer should not exceed 2-3 mm. Otherwise, the layer will crack easily after drying.
- Before puttying, the surfaces are properly prepared: the rust is cleaned off with a metal brush, and then sanded.
It is better to use 120-grit sandpaper. We must not forget that the matting area should be larger than the area directly being puttied.
- An abrasive mark is applied to the surface. This is done so that the putty has something to hold on to.
- Now you need to treat all areas with a degreaser after sanding.
- The surfaces must be primed first. This is done no later than an hour after sanding, since cleaned metal without paintwork quickly undergoes oxidation processes.
It is better to take a phosphate primer as the first layer. This type of primer is a 2-component composition that is easily diluted with water.
Attention. It is prohibited to dilute phosphate primer in a metal container. The fact is that phosphate tends to interact with iron, and this is not good. It is better to use a glass or plastic container.
If you can’t find a phosphate primer, aerosol KSL primer in cans is also an option.
It is recommended to apply the first primer in 1-2 layers, directly onto bare metal. It dries quickly, but due to its liquid state it can cause smudges.
As soon as 10-15 minutes have passed after applying the first primer, you must proceed to treating the surface with acrylic. This type of primer is applied in 2-3 layers. The gap between layers is maintained for about five minutes.
Note. Again, acrylic primer can successfully replace the composition of an AER spray can. This is especially true if there is no compressor.
Acrylic dries completely within 3-4 hours. If it is possible to use INFR heating, the drying period can be significantly reduced.
Closing the hole
The fastest and most common option for repairing a barrel and more is to use a bolt with a nut and washers of suitable sizes. Take the bolt, put a metal washer on it first, then a rubber one. Next, insert the bolt with washers into the hole, and perform exactly the same operation on the reverse side. This entire structure is tightened with a nut, and the hole is reliably sealed.
In this case, you can use raw rubber as a gasket, which is used for vulcanizing car inner tubes; it is this that can provide excellent sealing. Cold weld putty can be used to seal small holes. This putty is a two-component composition and is characterized by a high degree of adhesion to any cleaned surfaces. Cold welding can also be used to seal small cracks. For greater reliability, the crack must be treated on both sides.
It is not recommended to use an electric or gas welding machine in this situation to apply a metal patch. The wall of the barrel is very thin, so it will simply burn out, and there is a high probability that there will be even more holes.
Seal the hole with rubber
A worn-out metal container can be made suitable for further use by simply sealing it, like a car inner tube. A leaking metal barrel is emptied of water and dried in the sun. Next, you need to clean off the rust from the outside using sandpaper or a wire brush. This must be done carefully so that the hole does not become even larger. Then take an old car or bicycle tube, cut out a piece slightly larger than the hole in the barrel, and glue it with Moment glue. You can use any other waterproof glue. For greater reliability, the hole on the inside can be covered with garden varnish to stabilize the water pressure.
Survey
Let's resin the hole
But if the hole is too large or there are several of them, then it is better to tar the barrel. To do this, you first need to clean off all the rust with a wire brush, and then apply a layer of hot resin in place of the holes. A layer of durable material is applied to the resin that has not yet cooled down, then another layer of resin is applied. The heated resin has a viscous consistency and adheres well to the iron. To prevent cracking of the dried resin, several layers of paint can be applied on top.
Plastic bags
Another method for repairing a metal barrel is to use plastic garbage bags. The largest packet size is taken. As a rule, such bags have a thickness of up to 60 Microns and a volume of over 240 liters. The volume is very important because it must be significantly larger than the volume of the barrel, and the circumference of the garbage bag must match the circumference of the barrel. Then the bag is placed on the bottom of the barrel, pressed tightly against the sides, the top edge of the bag is wrapped on the barrel and glued with tape. It’s even better to use two bags for this purpose, inserting them one into the other. The essence of this method is very simple, the water will be stored in a bag, and the barrel will act as a supporting frame for it.
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Without bottom and “tire”
If, nevertheless, you were unable to save the metal barrel, do not despair, it can be successfully used as a stove for burning garbage in the garden. As an addition, you can make a metal grate by making it from a steel rod with a diameter of 8 - 10 millimeters. Prepare a platform, install brick pillars on it, place a grate on them, and place a barrel on the grate. Then everything is simple, pour the garbage into the barrel, and make a fire below under the grate. The natural draft that will be present in this case will allow you to burn any garbage, even green juicy grass, in an improvised stove. Naturally, over time the bottom of the barrel will burn out. You just need to turn it over, and it will serve as a stove for some time.
If you have a plastic barrel in your garden, and somehow holes have formed in it, then they can be repaired using silicone glue and sealant. To do this, the hole area must be thoroughly degreased, then a layer of sealant must be applied. After it dries, the repair area will look like a welded patch.
The first manifestations of through body corrosion in cars of the domestic automobile industry appear already in the second year of operation. In this case, it is not necessary to contact a car repair shop, since repairing holes in the car body without welding is quite simple. Craftsmen have come up with several ways to quickly patch small holes, such as arches or holes in the wing. However, methods without welding are unacceptable for repairing power elements.
Other solutions
Recently, it has been possible to close the holes in other ways. One of them involves working with fiberglass.
- The surface of the body is also cleaned and degreased, as in the two cases described above.
- Overlays are cut out of fiberglass, the size of which should be 2 cm larger than the hole size.
- The area is pre-primed and the composition is given time to harden.
- The pad is applied to a completely dry surface.
- Fiberglass linings are fixed using an adhesive-resin composition.
First, one overlay is glued, then the second, third, and so on. Again, it is recommended to put a lining on the reverse side.
After the glue has dried, the body surface is treated and painted.
As you can see, holes on the car body caused by corrosion can be easily eliminated with your own hands. Visual examples can be seen in the video and photo.
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A source of through corrosion, or simply a hole, in the bottom of the car is the price to pay for comfort in the cabin. Its primary source is not anti-icing reagents acting outside, but moisture accumulating under the “pie” of heat, sound and waterproofing. Therefore, when eliminating it, work is carried out mainly from the inside.
If you follow all safety rules when welding, you must completely dismantle the interior, including the trim. This is always very time consuming. Therefore, the question of how to seal the bottom of a car without welding is very relevant. Moreover, most alternative methods do not give worse, but rather better results.
Installation of galvanizing and riveted connections
Processing holes in the bottom of a car with galvanized metal is quite common. The main material required for this is iron sheet. Before installation, it should be secured with self-tapping screws and lubricated with mastic. It is best to use an anti-noise bitumen mixture. The galvanized sheeting is then laid and bolted in place using a drill. Then you need to treat the area with special means and level the entire surface. When everything dries and the structure is fixed, it should be coated with paint.
Another reliable option for filling holes is to make rivet joints. Using this technology, large and small holes can be eliminated. To do this, the damaged area is cut out and the edges are cleaned of paint and rust. Next, steel rivets are cut out, since they are least susceptible to corrosion. Then the part is applied and secured with these rivets. When the structure is completed, the entire area is painted.
So, there are several ways to repair holes in the bottom of a car without welding. You can use any method described in this article. Choose exactly the option that you can implement. And remember, it is possible and very pleasant to carry out any task on your own.
Cold methods of sealing holes in metal
There are two ways to repair holes in the underbody of a car without using hot work.
- Using composite materials - various types of polymer resins in combination with a reinforcing filler and a curing reaction accelerator. With high-quality surface treatment, in addition to restoring mechanical strength, they play the role of inhibitors - retarders of chemical and electrochemical corrosion reactions;
- Installing sheet material patches onto rivets.
General technological rules
Holes in the bottom are usually discovered from the outside, when inspecting the car on a pit or lift. Signs of through corrosion are local swellings, which, when you try to pick them out, crumble into dust.
If you find such troubles, you need to open and remove the pie of heat, noise and waterproofing on the floor in the cabin in the entire area where the sheet of iron forming the floor is welded to the power elements of the body - thresholds, tunnel and others. Then you will see the whole picture of the damage and will be able to take preventive measures in those places where corrosion has not yet become through.
Before the process of sealing the holes itself, you need to take measures to slow down the corrosion process (stopping it is an unattainable ideal to strive for). To do this, all iron rags are removed, and the edges that have residual strength are treated with sandpaper and a wire brush until shiny. The cleaned surface is treated with rust converters. For example, the “Tsinkar” composition. Work is being carried out inside and outside.
After completion of the work, the surface of the unprotected metal is covered with bitumen mastics, putty (acrylic, epoxy), paint or gun fat.
The work makes sense if the total surface of through holes does not exceed 15% of the floor area.
Fixing pinholes
If the source of through corrosion has a diameter of no more than 1 centimeter, it can simply be covered with a two-component polymer composition. Poxipol glue or a cold welding kit similar to plasticine gives good results.
A small hole makes it possible to use so-called cathodic electrochemical protection. Find an aluminum rod, make a rivet out of it and fill the hole with it. Within a radius of 20 cm from it, corrosion will stop. True, the rivet will gradually collapse on its own. But this may take five years.
Repairing large-scale damage
In this case, you will have to take care to restore mechanical strength. If the hole is on a flat area, then there is no point in messing around with epoxy and fiberglass.
TOP 5 sealants
Popular metal sealants from leading lubricant manufacturers.
Efele 133
Universal thread anaerobic sealant, which is used to seal and securely fix frequently disassembled pipe connections. Also used in water fire extinguishing systems. Suitable for threaded connections with a diameter of up to 3 inches, which are operated in environments with temperatures from –60 to +150 °C. The product eliminates loosening of bolts and nuts that occur under the influence of vibration or thermal expansion, preventing their self-unscrewing, prevents the formation of leaks, and increases the tolerance for machining.
Weicon AN 305-72
Anaerobic adhesive-sealant with high viscosity and medium strength, designed for processing pipe threaded connections. The product contains polytetrafluoroethylene, which provides reliable fixation and prevents self-unscrewing of fastening components. The substance protects products from fretting corrosion and can be used in gaseous and liquid media. All properties are preserved at temperatures from -60 to +150 °C.
Weicon Aqua-Flex
Weicon Aqua-Flex is a composition used for sealing pipes and water pipelines during the repair of ships and other objects of the marine and river sector. It is also used in construction for the restoration of roofs and drains, installation of PVC flooring in swimming pools. The substance is applicable in damp and wet environments and is suitable for food production equipment as it is food accessible.
Dow Corning 730 FS
A one-component fluorosilicone sealant used for sealing and bonding in areas where resistance to swelling from flammable substances is required. The mixture is also used for assembling and restoring aircraft fuel systems and tanks, gluing and sealing parts exposed to moisture, mechanical shock and vibration. The substance is resistant to solvents, hardens under normal conditions under the influence of air and moisture, turning into durable rubber. Features good adhesion. Stability and elasticity are maintained at temperatures from -65 to +200°C.
Is it worth soldering
You can also seal holes in the bottom using soldering. However, ordinary household soldering irons are not suitable for heating metal with a thickness of 0.5 mm or more. Most likely, a hair dryer will not help you with this. You need to use a portable gas burner, for example, Super-Ego R355, which fits into a small - volume from 400 to 700 ml - cylinder for camping stoves.
Solder and flux are required for soldering. The solder used is low-melting, with a predominant content of tin or lead. Flux can be replaced with electrolytic acid. The connection is strong and can withstand high vibration loads.
Soldering has two disadvantages.
- It involves hot work, which increases the overall complexity of the repair. This can be neglected if your hands grow from the right place;
- The main material of solder - lead or tin - is a substance that has a lower electronegative potential than iron. Therefore, upon their contact, electrochemical corrosion occurs, in which iron will play the role of a “sacrificial anode” and be destroyed.
Now you have an idea of how to seal the underbody of a car without welding. If you are careful and persistent in cleaning the surfaces, then treating them and protecting them, then the installed patch can outlive the car itself.
The first manifestations of through body corrosion in cars of the domestic automobile industry appear already in the second year of operation. In this case, it is not necessary to contact a car repair shop, since repairing holes in the car body without welding is quite simple. Craftsmen have come up with several ways to quickly patch small holes, such as arches or holes in the wing. However, methods without welding are unacceptable for repairing power elements.
Closing the crack
If cracks or holes appear in the bottom or side walls of the barrel, they can be repaired in several ways. It is necessary to coat the crack on the outside with melted resin or waterproof glue. Then you will need rubberized fabric or fiberglass, which is used in construction work. We place a small piece on the molten resin, and coat it with another layer of resin or glue on top. To make the patch more reliable, exactly the same operation is performed on the inside of the barrel, but before that the area being repaired must be thoroughly cleaned of rust.
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The leaky bottom of a metal barrel can be sealed with clay diluted in water. To do this, in the place where the container is expected to stand, you need to dig a small pit, which is subsequently filled with clay (you can knead the clay directly in this pit). After this, we install the barrel in the pit and place some weight inside so that the barrel fits tightly into the pit. Once the clay dries, it forms a durable layer through which water will no longer seep through. Having installed the barrel in this way, you will be able to use it for many more years.
Body repair with putty
This method is used when you urgently need to repair a small hole without welding or there are no other options for car repair. However, it should be understood that this is a temporary measure, since the putty will quickly crumble. To repair the damage, use a special putty with small, medium, and large glass fibers. When preparing it, you need to ensure that there are no air bubbles. To create an even layer, a lining is installed on the back of the hole.
A primer is applied to the prepared area of damage. After it dries, putty with large fibers is applied. Depending on the size of the hole, several layers are applied and each layer is completely dry. The total thickness should not exceed 2 mm, otherwise the patch will begin to crack. The last layer is applied with fine fiber putty. The repaired surface of the car is treated with fine-grained sandpaper.
How to repair a leak in a pipe: emergency methods without shutting off the water supply
During the operation of systems containing pipelines, leaks often occur. Such malfunctions can occur as a result of careless handling, improper installation, or simply due to wear and tear of the material. Moreover, a leak can occur in pipes made of both metal and plastic-containing substances (plastic, metal-plastic, polypropylene, etc.)
The following troubleshooting methods are available:
- Mechanical
- Chemical
- Combined.
The first type is associated with the use of improvised means. Self-tapping screws, harnesses, clamps and more can act in this capacity.
With the chemical method, the malfunction is eliminated using adhesive and astringent chemicals, such as silicone or other sealant.
The latter method involves the use of mechanical means and chemicals.
Regardless of which method will be used, it is necessary to decide “whether it is necessary to shut off the entire water supply system, only a separate part of it, or whether shutting off is not required at all.”
In case of small diameter holes (up to 2-3 mm), shutting down the system is not necessary. If holes of a larger diameter appear, in order to avoid emergency situations, it is better to shut off the network above the leakage point (along the direction of movement of the liquid in the pipe).
Fiberglass and mesh
To repair more extensive damage, an aluminum patch mesh is used. A piece slightly larger than the hole is cut out of it and attached with masking tape. Next, sealing holes in the car body without welding is carried out in the following sequence:
- a thin layer of fiberglass putty is applied without touching the tape;
- after drying, the tape is removed;
- subsequent layers of putty are applied after the previous one has dried;
- the surface of the car is treated with sandpaper or a grinding machine until smooth;
- To strengthen the mesh, several layers of putty are applied to the back of the body.
Long-term auto patches are made from fiberglass and epoxy resin. Several overlays are cut from it, the first of which should cover the hole with a margin of 2 cm. The size of each subsequent piece is made larger than the previous one. The last overlay should cover all the metal stripped during the preparation process.
Repair by sealing the hole with metal
Metal patches and subsequent soldering are considered the most productive means for restoring thresholds, even with a large area of corrosion. If rust has not led to deformation of the central pillars and distortion of the geometry, then you can use metal patches and strengthen them with a soldering iron. For repairs you will need the following materials and tools:
- metal patch, size 2 cm larger than the corrosion hole.
- assembly hammer;
- Bulgarian;
- medium abrasive sandpaper;
- anti-gravel;
- anti-rust composition - phosphoric acid, if available;
- soldering iron, tin solder;
- automotive primer, degreaser.
Preliminary work begins with treating the surface with a grinder after the used paint layer has been cut off; for this you need:
- Clean the thresholds and identify areas of corrosion.
- Cut from metal, you can use cans of auto chemicals, patches of the required size.
- Service the edges of the patch and treat the threshold with a degreaser.
- Solder the patch using a continuous seam.
- If the metal protrudes above the surface of the body, press the bubble with a hammer.
- Treat the dent in the metal with a primer, leveling the entire surface. Use phosphate primer for the first layer. After 10 minutes, apply standard automotive grade.
- Let it dry. Sand, apply a layer of paint and varnish.
Experienced drivers recommend not applying paint to the thresholds immediately after repairs, but treating the surface with a layer of anti-gravel and painting within 7-8 days.
Car body soldering
This method is used to seal small and large holes without welding. To work, you will need flux, which will protect the metal from rapid oxidation. Soldering acid, sold in radio stores, can successfully cope with this task. To achieve the required temperature, you will need a soldering iron with a power of 1 kW or more, or a version heated with a blowtorch, but it is better to use a gas torch. The solder is chosen to be refractory, since it can be used to repair a hole in the car body more reliably.
Small holes are simply filled with solder, starting from the edges and gradually fusing to the center. A large hole in the body is covered with a patch cut from tin from a tin can. It provides:
- strong connection, almost like welding;
- significantly longer service life than putty, but less than welding;
- possibility of sealing large holes;
- ease of implementation, repairs are accessible even to beginners.
The work is performed in the following sequence:
- A patch is cut to fit the size of the hole. The larger the area of contact with the body, the more reliable the connection.
- The soldered edges of the patch and the damaged areas are cleaned with sandpaper until shiny.
- Using flux and solder, the cleaned surfaces are tinned.
- After applying the patch to the repaired area of the car, it is heated to the melting temperature of the solder. In this case, you need to ensure the continuity of the seam so that there are no missing sections.
- After cooling, the remaining flux is removed, and the soldering area is washed with hot water and soda.
The disadvantage of this method is that the patch swells due to heating. If checking with a ruler confirms this, the bubble is removed with light blows of a hammer.
The resulting depression is leveled with putty:
- Marks are applied to the surface of the patch, plus a few millimeters from each edge, with 120-grit sandpaper. This is necessary for reliable adhesion of the putty to the metal.
- The cleaned surface is cleaned of dust and degreased with a solvent.
- To prevent the metal from becoming rusty, the primer is applied no later than an hour after preparation.
- The first 2 layers are applied with a phosphate or acid primer with an interval of 15 minutes.
- After waiting another quarter of an hour, apply 2 - 3 layers of acrylic primer at intervals of 5 minutes.
- It takes 3 - 4 hours to dry completely. The drying process can be accelerated using an infrared heater.
How to seal holes in a metal tank if there is no welding?
If you don’t have a welding machine, but you need to seal the holes in the tank, then use the so-called.
"cold welding". In stores you will find “cold welding”, usually of two types: 1) in the form of glue, 2) in the form of putty or a rod. Instructions for use will be included with the product, or you can read in detail on the Internet (there is material on this topic).
The choice of the type of “cold welding” is yours. I have experience using putty - the results are pleasing (the sealed hole does not leak - about a year has passed).
repair a hole in a leaky iron tank without welding
Good question. My plastic basin for soaking laundry is leaking. The crack is 20 centimeters long. I sealed it with epoxy glue, which is sold in any hardware store. Another thing is that if there is a very large hole in the metal tank and the rust continues to spread, then this will not help much. Rust thins the surface and the hole becomes larger and larger. See for yourself. I know that there is such a “cold welding” in the form of a rod. But I haven’t used it and don’t know if it has any effect.
Can be epoxy glue or cold welding
If the tank is for storing only cold water, then now it is possible to seal such a hole using a hot glue gun.
They are sold in stores and cost 400-500 rubles. Bonding occurs due to molten plastic. Several of these rods come with the gun. Also sold separately. Very convenient and fast. And most importantly, it glues securely. You just need to clean the surface well and fill everything with plastic. It grabs tightly (tested). It sticks to everything. Great stuff. He inserted the rod into the gun and plugged the gun into the socket. You only need to wait three minutes. A special nozzle heats up and the plastic begins to melt. You pull the trigger, melted plastic comes out of the tip and you fill the entire hole. Due to the trigger, the rod gradually moves forward, and the work is reduced only to pressing the trigger.
Be sure to buy it and enjoy it for your health.))
Any plumber of the 3rd (lowest) category used to know how to seal a hole in a pipe, and the tank is the pipe.
Holes in pipes were TEMPORARILY, that is, until better times, even under pressure, easily and simply always sealed in two ways.
Method 1 - with clamps (rubber is applied to the hole in the pipe wall, then secured and tightened with a clamp). If the hole is in the bottom of the tank, a metal flat plate is placed on the rubber, in which holes for the bolts are drilled; the bolts tighten the rubber and the leak is eliminated.
Method 2 - with wooden choppers (they cut a cone-shaped peg out of a piece of wood along the diameter of the hole and then hammer it into the hole with a hammer half its length).
You need to find time later, however, to turn off or drain the water from the tank and either weld the hole or replace the tank.
Rivets
This method not only repairs large holes in the car body, but also replaces parts (fenders, aprons) without welding. In terms of reliability, it is not inferior to welding. It is recommended to install rivets in an inconspicuous place. Since there is no splash of molten metal during operation, like welding, it is often used to repair car floors.
The riveter required for the job can be bought in a store (costs approximately 500 rubles). The technology is simple:
- The patch is cut so that it overlaps 2 cm around the edges of the hole.
- By attaching it to the body, it is given the desired shape.
- The locations of the holes for the rivets are marked.
- After drilling the patch with a drill according to the diameter of the rivets (4 - 6 mm), it is advisable to countersink the edges of the holes so that it fits more tightly to the surface of the car body.
- Having applied the patch again, the center of the first hole is marked and drilled.
- After riveting it and leveling it, the patches are tapped and the remaining holes are drilled in place.
- To ensure a tight fit of the patch to the car body, rivets are fastened from the center to the edges.
- To prevent moisture from getting inside, the joint around the perimeter and rivets is coated with sealant.
How to seal a leak in a pipe: chemical methods (sealants)
The use of chemical methods for eliminating leaks uses various chemical compositions. Most often silicone based. Their use is due to high heat resistance (up to 350 degrees) and increased wear resistance. Fiberglass painting cloth is usually used as a reinforcing element.
The damage repair steps are as follows:
- A 2-3 mm thick sealant is applied to the cleaned damaged surface of the pipe, over which a painting cloth is rolled (back to back, layer to layer)
- On top of the first layer, another layer of sealant is applied and then reinforcing fabric, but with an overlap of 5 mm turns.
- The total number of layers must be at least 4
- The fabric is laid tightly, without “air” layers.
- The last layer of sealant is applied
- The treated section of the pipe must be left to dry. Depending on the type of sealant, this can take from several hours to several days.
Seal a hole in a metal or polymer pipe
In case of very minor damage to a straight section of a pipe, a bend or a threaded connection, you can use ordinary superglue (eg: “Minute”) and soda. When using this method, the main thing is to properly prepare the damaged area for applying the adhesive. The surface must be completely cleaned and degreased. To do this, use a file (or grinder) and any solvent.
- At least 3 layers of molar tissue are applied alternately to the damaged area, with a layer of baking soda applied to each layer. The last layer will be a layer of glue, which reacts with soda to form a dense waterproof shell.
- If the damage is a crack, then soda is driven inside and glue is applied on top. The chemical reaction will create a dense shell.
Final stage
Regardless of how the car body was repaired, they all end with putty. However, it absorbs moisture, which leads to rapid destruction. Therefore, it must be coated on top with an anti-corrosion or epoxy primer. Body repairs are completed without welding by painting. To do this, use a spray gun or aerosol cans, after covering the adjacent surface of the car with plastic film. You should not use a brush, as drips are possible.
The proposed methods will help to repair a car without welding in case of single damage. However, if a large area is affected by corrosion, it will be easier and more reliable to contact a car repair shop to replace the rusted area by welding. Most often this happens to the floor, so it is recommended to regularly check it from underneath the car using an inspection hole or lift.
How to eliminate a leak in a pipe: malfunctions of systems and products made of various materials
Depending on the location of the damage and the material from which the system or its individual parts are made, there are also the following ways to eliminate them:
Seal a leak in the heating battery (radiator)
- The main battery malfunctions are divided into the following types: formation of cracks in the case. Such damage can be repaired using cold welding (an adhesive consisting of two components prepared on the basis of epoxy resin). This glue is highly resistant to high temperatures and humidity. Before starting to apply it, you must turn off the system from the water supply and clean the surface using sandpaper or a file.
the malfunction is caused by poor sealing of the seams between the individual sections. In most cases, to solve the problem, you will have to replace the entire radiator, or a separate section of it (for multi-section collapsible batteries). But to urgently repair the damage, you can use the following method. Available tools will require alabaster, cement, water, medical bandage or gauze. Alabaster, cement and water are mixed in any container until thick. Then strips of bandage or gauze are dipped into the resulting mixture and applied to the damage in several layers (from 2). The radiator can be used only after the pad has completely dried.
- The leak occurs at the junction of the radiator and the pipeline. This problem is most often caused by poor installation of the product. During battery operation, the vulnerable spot is subjected to heavy load and, as a result, a leak occurs. Such a malfunction can be eliminated using a rubber gasket and a clamp (or regular wire). The gasket can be made from a piece of a car inner tube. The overlay is cut out with a “spare” and wrapped around the damaged area. Then it is tightened with a clamp or wire (using pliers).
- To eliminate leaks on polymer pipes, there are methods similar to methods for eliminating leaks on products made from other materials: a common way to eliminate damage on a straight section of a pipe is to apply a rubber band or a similar “tightening” material. Such a gasket is attached to the pipe using metal clamps (which may already contain a rubber gasket), plastic ties or wire.
- Very small cracks and leaks in a straight section can be solved by wrapping regular electrical tape in 4-5 layers. It is important to take into account that each subsequent turn should overlap the previous one by 2-3 mm.
How to fix a leak in a plastic pipe
How to fix a leak in a cast iron pipe
- To troubleshoot straight sections of cast iron pipes and at their joints, the following methods are usually used: for the work you will need a cement mortar (10:1 - 10 parts cement to 1 part water), a bandage or gauze. The first step is to clean the damaged area with a file or grinder. Then a bandage is dipped into the prepared cement solution and wrapped around the damaged area in 3-4 layers. Next, the remaining thick cement mixture is either compacted into the joint between the pipes (in case of damage at the pipe connection), or smeared over the surface of a bandage or gauze (in case of damage in a straight section)
How to fix a leak in a faucet
- Any mixer is a sealed device with a cavity inside. The main reason for a leaking faucet is the depressurization of its individual elements. Depending on what caused the leak, there are certain methods for eliminating the leak: quite often the cause of water leaks is small debris caught between the moving elements of the faucet. In this case, regular cleaning will help.
- The next common cause of faucet malfunction is the wear of rubber gaskets in its individual parts. In this case, it is necessary to determine the location of the fluid leak, disassemble the tap as much as possible, visually inspect and clean the gaskets. If the gaskets are very worn, even to the naked eye, they must be replaced.
- The main advice when a leak occurs in the mixer is to check the wear of the O-rings and gaskets in its individual parts and “scroll” all the screwed parts to the limit, thereby ensuring its complete tightness. If this does not help, you will most likely have to completely replace the faucet.
Before starting work, you should correctly assess the resulting damage in order to most effectively apply one or another method of repairing it.
Sources:
https://www.moscow-faq.ru/q/house/useful/zadelat-otverstiya-v-metallicheskom-bake-esli-net-svarki-70362 https://kuzovexpert.ru/kuzovnoy-remont/kak-zadelat -dnishche-avto-bez-svarki.html https://zen.yandex.ru/media/id/595e22991410c35451a5c9ba/59a66462a86731f8ef50c533 https://infokuzov.ru/remont/kak-zadelat-dyrku-bez-svarki https:// ribler.ru/vodosnab/kak-zadelat-tech-v-trube-ekstrennye-sposoby-bez-perekrytiya-vodoprovoda/
How to repair a metal garage
Garages made of metal structures
The design of a metal garage, compared to a brick structure, has more advantages. The main ones are simplicity and speed of production. The article suggests getting to know how metal garages are repaired.
What are the features of a foundation for a metal garage?
A metal garage is a lightweight structure that requires a purely symbolic foundation according to one of the options:
- A recess of about 25 centimeters is made along its perimeter, the same width.
- A concrete slab with reinforcing mesh is poured under the entire garage. Such a device will simultaneously serve as the foundation and rough covering for the garage floor.
- Factory-made floor slabs are laid directly on the ground.
But in any case, the following conditions must be met:
- The top of the base or its slab should be approximately 20 centimeters higher than the ground level, which will prevent water from flowing into the garage when it rains or melts snow.
- The surface of the base must be horizontal.
- Small pieces of reinforcement are concreted in the corners of the foundation or slab, and the garage frame is welded to them, which will prevent the garage from being unexpectedly lifted during theft.
Tip: When making a foundation, it should be poured all at once to create a single monolith of the structure.
Subsequent repairs also depend on the type of foundation. If there are potholes or cracks in the base, it is better to make a new screed over the entire surface.
The video will show you in detail which metal garage structure is better and how to properly repair the structure.
Choosing the right sealant for different surfaces
Some compositions are considered universal, others are suitable only for a specific roofing material, but do not exhibit high adhesion to other coatings.
For metal roofing
For a product to be suitable for metal, it must have reliable adhesion to stainless steel, carbon steel, and alloys. A good sealant has high elasticity, is resistant to precipitation, and is not destroyed by vibration. Polyurethane, bitumen, and bitumen-rubber sealants are best suited for metal roofing. It is these compositions that are characterized by a sufficient degree of plasticity, and therefore serve for a long time.
Some products can even be applied to wet surfaces, which is very important when carrying out emergency repairs. Silicone acid compounds cannot be used for metal roofing: they provoke rusting.
For corrugated roofing
In order for the roof to serve faithfully, during installation you should follow the recommendations for the maximum slope (14 degrees), and also be sure to process the transverse joints of the corrugated sheets. Polyurethane sealant, which has high waterproofing properties, is excellent for this material. It is important to install or repair profile sheets when they are completely dry and clean. The sealant is applied in a layer of 3 mm; if necessary, the seam is covered with sealing tape.
For soft roof
Flexible tiles are the most inexpensive and popular type of material, which is especially often used for arranging country houses. For complete sealing, bitumen mastics and emulsions are used. For local repairs, products such as liquid rubber based on rubber and silicone are suitable. Seams and joints are sealed using sealant tape. All products, except bitumen mastics, are applied only to dry surfaces.
For metal roofing
Metal tiles are similar in properties and installation to corrugated sheets. Typically, silicone sealants with increased resistance to UV radiation are used to seal cracks up to 5 mm in size. Longitudinal and transverse joints are treated with bitumen or polyurethane compounds; the same means are used to seal the seams between the chimney, ventilation outlets, antenna and roof.
