What to close holes in the car. Fiberglass use for body work

One of the most problematic and expensive options for giving the car of a commodity type is to repair holes in his body. This damage can be eliminated by a hundred or try to get rid of it on your own. The first way will require substantial costs, but the second will cost cheaper, but will take quite a long time. In addition, it is not possible to perform a breakpoint.

Steps to repair body holes

Work on the elimination of holes in the body requires a thorough preparation of the workplace. The area around the holes are carefully cleaned with a rough sandpaper, with its radius should not less than 3 cm exceeding the size of the hole itself. Remove not only the top layer of paint and varnish, but also the soil. As a result, a metal must be seen on the cleaned area, which is processed by the anti-corrosion composition.

Next should be soldered. For her can be used any piece of metal suitable size. It is important to consider that such a repair is carried out on the back of the body so that the violation of its integrity is least noticeable. Before the plotting of the patch, as well as the place of damage, is irradiated using orthophosphoric acid as a flux. Its use is especially appropriate in this case, since, firstly, eliminates the likelihood of corrosion at the site of the solder, and secondly, it allows you to make the most reliable and imperceptible seam.

Patchwork solder performs skidding, not leaving loose intervals. After the processed place is cool, it should be checked if our latik is a bubble on the surface of the car. If nevertheless it turned out uneven - the richtovka is carried out with a small hammer, avoiding paint damage.

Next, the repair provides for the putty of the plot with a patch in order to maximize it. First you need to sand repaired area, then degrease it and dry it. Important: The putty should be applied with a rather thin layer, because with its thickness, more than 3mm material on the metal will be bad. The priming itself is performed in two stages: applying acid and acrylic soil. In order not to mess with the preparation of a two-component composition for the first stage, you can use the phosphate primer, packed in the canopy. Acrylic primer is also sold in the form of aerosols, which will be very convenient in the absence of a compressor and a small damage.

Alternative hole repair options in the body

To repair a hole with its small size, you can close the hole with a putty, mixing it with fiberglass. This method is much faster and easier than the previous one, but it will last for a short time - under the influence of precipitation, the scene will begin to swell and become too noticeable. However, this option may be by the way if you are preparing a car for sale.

If there is no desire or ability to repair a hole, but I don't want to drive with it - use the stickers for cars. So very often come with corporate or working machines. This type of repair is conditional in nature, but appearance It remains at the height.

If your car has serious damage, the size of a larger box is best eliminated by welding. Skill them will be able to perform a professional on a good service station. As an alternative, you can engage in welding work yourself, if you have proper experience and necessary equipment.

The focus of through corrosion, and simply a hole, in the bottom of the car is a fee for comfort in the cabin. Its primary source is not anti-band reagents acting outside, and moisture accumulating under the "cake" of heat, noise and waterproofing. Therefore, when it is eliminated, work is carried out mainly from the inside.

If you comply with all safety regulations when welding, you need to completely dismantle the interior, including the trim. It is always very expensive in time. Therefore, the question of how to close the bottom of the car without welding is quite relevant. Moreover, most alternative ways are given not the worst, but rather the best result.

Close holes in the bottom of the car without the use of fireworks in two ways.

1. Applying composite materials - various types of polymer resins in combination with reinforcing filler and curing reaction accelerator. With high-quality surface treatment, they, in addition to the restoration of mechanical strength, play the role of inhibitors - chemical and electrochemical corrosion residers;
2. By installing patchwork from sheet material on rivets.

General technological rules

The holes in the bottom are usually found outside, when examining a car on a pit or lift. Signs of end-to-end corrosion are local swelling, which when trying to board them are scattered into Duch.

If you find such trouble, you need to open and remove the cake of heat, noise and waterproofing on the floor in the cabin on the entire volume, where the iron sheet forms the floor, is welded to the power elements of the body - thresholds, tunnel and other. Then you will see the whole picture of damage and be able to take measures of a preventive nature in places where corrosion has not yet become through.

Hole in the bottom of the car

Before the process of embelling the processes, you need to take measures to slow down the corrosion process (stop - this is an unattainable ideal to which it is worth striving). For this, all iron rags are removed, and the edges having residual strength are processed by sandpaper and a metal brushed to the appearance of shine. The stripped surface is processed by rust converters. For example, the composition "Zincar". Work is carried out inside and outside.

After the work is completed, the surface of the unprotected metal is covered with bitumen mastic, putty (acrylic, epoxy), paint or cannonal lady.

Work makes sense if the overall surface of the through holes does not exceed 15% of the floor area.

Sealing point holes

If the focus of through corrosion has a diameter of not more than 1 centimeter, it can be simply shred out with a two-component polymer composition. Good result Glue POXIPOL or a set for cold welding, similar to plasticine.

A small hole makes it possible to apply the so-called cathode electrochemical protection. Find the aluminum bar, make a rivet out of it and close the hole it. Within a radius of 20 cm from it, corrosion will stop. True, the rivet will gradually collapse itself. But this may take five years.

Sealing large-scale destruction

In this case, it will have to take care of and to restore mechanical strength. If the hole is in the flat plot, it makes no sense to mess with epoxy composition and fiberglass.

Durable composite material is obtained only with absolutely accurate observance of technology - mixing proportions, drying mode and much more. Use the finished material of this kind, for example, textolite. Having a thickness of 3 mm, it is not inferior to the strength of the sheet gland. The plate can only be installed on epoxy glue, but it is better to use a combined connection using rivets. The latter must be from aluminum, then they will play the role of cathode protection.

Patchwork on the bottom of the car

Holes of a large length on the place of joints with power elements are eliminated by piping from sheet iron or aluminum. They need to be bent along the shape of the joint so that the width of the contact zone with the still living material was at least 2 cm. They are installed on aluminum rivets, the use of epoxy composition will be alrong. Especially if sheet iron is used. After all, you can not know the composition for sure and in which direction the electrochemical corrosion goes - whether it will destroy the patch or body. The polymer resin will play the role of an inhibitor.

The final sealing of slots and holes is carried out using, for example, the NOVOL PLUS 710 set. In addition to epoxy filler and hardener, it enters a piece of fiberglass.

Should I solder

Close the holes in the bottom can be using soldering. However, to warm the metal with a thickness of 0.5 mm, ordinary household solders are unsuitable. Most likely, the construction hairdryer is not an assistant in this. It is necessary to use a portable gas burner, for example, SUPER-EGO R355, which is suitable with a small volume from 400 to 700 ml - cylinder for tourist stoves.

For soldering, solder and flux are needed. Solder uses low-melting, with predominant tin content or lead. Flux can be replaced with electrolyte acid. The compound is durable, it can withstand large vibration loads.

The flaws of the soldering two.

1. It is associated with firing work, which increases the overall complexity of repair. This can be neglected if your hands grow from there, from where it is necessary;
2. The main material of the solder is lead or tin - is a substance having a smaller electronegative potential than iron. Therefore, when their contact occurs electrochemical corrosion, in which the iron will play the role of "sacrificial anode" and collapse.

Now you have an idea of \u200b\u200bhow to close the bottom of the car without welding. If you are neat and persistent in stripping surfaces, subsequent processing and protection, then the installed patch can survive the car itself.

The use of fiberglass for the repair of the body allows you to minimize the cost of restoring the car. For work, special skills will not need - everything can be done independently, without the involvement of specialists with their equipment. This method of repair is applied only for local damage to the nonsense parts of the body.

Technology repair

Through the bodies of the body are sealed with epoxy or polyester resin. Fiberglass is used to reinforce the repaired area, gives it strength. In resin, for obtaining necessary mechanical properties, fillers are added - wood sawdust, asbestos, talc, aluminum or steel powder.

Epoxy compositions consisting of epoxy resin, filler and plasticizer, which increases the plastic properties of the composition. Without a resin plasticizer after a while cracks. It will not stand the loads while driving.

Preparatory work

The damaged surface of the body is thoroughly cleaned from paint, rust, dirt. The form and size of the processing site depends on the nature of the damage around which the metal is determined on a width of 60 mm. The place of work can be slightly seeded. Due to this, the repair pad will slightly perform over the facial surface. Then the bare metal is shusing and degreased. Process with zinc or anticorrosion according to the instructions. Top apply primer.

Fiberglass, in the form of a hole, cut out 3 - 4 lining. The amount depends on the thickness of the material. At the first of the edges damage to the allowance of 20 or 15 mm, in accordance with the number of lathes. The latter is 60 mm. In the intermediate in the case of three 40 mm, and for four 30 and 45 mm. Prepare adhesive composition based on resin.

A layer of resin is applied to the prepared surface of the body with a brush, over the first, the smallest piece of fiberglass. Return it with a special roller to remove air from under the overlays. If the air bubble remained, then it is pierced with a seboard. So that the watches completely adhered to the metal of the body, it "nourishes" the end brush. Then the first layer of fiberglass is applied to the resin, the next piece of fiberglass are imposed, which is rolled and, if necessary, "nourished". Thus, install all layers.

Another method of installation - fiberglass wakes are impregnated with resin and impose on the repair point. The edges of the opening are pre-treated with adhesive composition. In the process of work, it should be ensured that the first layer of tissue overlap through damage and each subsequent layer overlap the previous one from each edge to the provided allowance (20 or 15 mm). When the resin is grabbing and dried, the resulting surface is treated with a file, and then a skin. If small shells, deepening, irregularities remain at the end of work, then they are embedded with putty.

When repairing a large hole holes from the inside, the end-to-end damage is installed solid lining (plywood, pressed cardboard, metal), close to the form of the original body surface. This will prevent the deformation of the fiberglass overlay during work. To the lining does not stick, it is lubricated:

• mastics for floors;
• a solution of paraffin with turpentine;
• polystyrene in acetone.

The applied separator will easily separate the lining from the resin at the end of the repair.

When repairing body elements with poor access from the inside (the rusted fragment of the wing, for example), it is impossible to use a solid lining. When the resin grabbies, the sheet of plywood or faster will not be removed. Therefore, the space under the damaged area is tightly filled with newspaper paper, seeking similarity with the initial form of the surface being repaired. Upon completion of work, the newspaper is removed.

Safety technique

Fit resin or fiberglass into the eyes or on open parts of the body can cause irritation, skin. The penetration of fiberglass particles into the respiratory tract is also extremely undesirable. Therefore, during repair, you need to use protective glasses, respirator, rubber gloves.

The resin that has occurred on the skin is immediately removed by means of a clean vet. Then the injured place is thoroughly wash with soap. Lubricate with protective cream.

By handing your car in order, sometimes you have to find an unpleasant problem - a through hole in the bottom of the body. Some owners of the car immediately appeal for help in service for maintenance of machines, while others are trying to close the hole on their own. In the second case, you have the opportunity to save time and finance, as well as be able to master new equipment repair techniques, which is always useful and relevant.

Holes in the bottom

Many people do not have a large number of repair and construction tools and technology, so there is a welding machine in the garage or a workshop of each car owner. In fact, if the hole in the body is not more than a matchbox, it is quite realistic to close it yourself without welding. For this there are several ways:

• put a hole with putty
• solder a metal patch;
• seal with epoxy resin;
• apply fiberglass and glue;
• establish rivet connections;
• use galvanized metal sheet.

Galvanized sheet

Method of close-up holes with putty

In the area of \u200b\u200bthe holes in the bottom, damaged coating should be removed, that is, an old layer of paint, and clean the metal, to be treated with a special preparation - rust converter. Then the working surface is degreasing and ground. Next is preparing a solution of putty homogeneous consistency. For greater efficiency, fiberglass is added to it (most often with large elements). Then the composition is neatly applied to the damaged area. Perhaps this is the most responsible part of the work. It is necessary to close the whole hole, gaps and microcracks that may arise around it. Application of the solution should occur in several stages, giving each new layer to dry.

Grinding putty

To achieve maximum fixation of putty on the damaged area, the lining is applied to the opposite direction. It does not allow the solution to spread, and act in the area that needs to be repaired. If the hole in the bottom of the car is quite large enough, this repair method can also be used with the auxiliary elements. Instead of lining, a metal mesh is mounted in the area of \u200b\u200bdamage. Therefore, the putty is evenly distributed over it, filling out all the space. After the solution is finally dry, this area is treated with a painting automotive putty. Then the damaged area is painted and apply a protective film.

Putty for cars

This method of climbing holes in the car is the most easy way. But experts do not recommend it to use, because the putty passes moisture and can collapse over time. Also, the holes are processed by mortar when the repair must be done urgently, and there are no other alternatives.

Solding metal patch

Skipping of a metal element into a damaged area is a method of sealing holes in the bottom or any other part of the car when you can close the hole of small sizes. To repair the machine for this technology, you need to have such tools:

• a piece of metal sheet;
• powerful soldering iron;
• flux or rust converter;
• putty;
• primer.

Materials in cars

So, first is cleared the area that should be repaired, paint, rust, dirt is removed. Next, it is treated with flux and degrease. Then the measurements are made and the metal piece of the desired form is cut. Such an element fully covers the hole, and the edges will go to the shoulder. When the detail for the patch will be ready, it is attached to a soldering iron. The edges of the patchwork are then treated with flux. At the end, it is worth treating the plot of putty and brew it. When the surface is driving, paint is applied and the protective layer.

This method of embedding holes in the bottom of the car is most popular. Experts note the durability of solder patches, since the connection is quite reliable. In addition, this method can be chopped by a hole of any size. In general, soldered the patch simply, with which the newcomer does not have a lot of experience in repairing machines.

Sequence of actions with a sealing of holes in the bottom

Application of fiberglass and glue

For high degree damage, the method of sealing holes with fiberglass is used. When this area is processed and cleaned from layers of paint and rust, it is necessary to cut several linings from fiberglass, sizes with a hole plus 2 centimeters. This plot should be pre-progress and give the composition to frozen.

Repair kit for cars

A drying surface is applied and a mixture is fixed (polyester or epoxy resin + adhesive). The next "part" is applied and also fixed. Thus, glue all the parts from the fiberglass, overlapping them one on one. So that they do not have seen and not deformed, the lining should be placed. When resin with glue dries, you need to handle the workspace and paint it.

Fiberglass

Installation of galvanizing and rivet connections

Handling holes in the bottom of the auto galvanized metal occurs quite often. The main material required for this is the iron sheet. Before installing it, it should be fixed with self-draws and smeared with mastic. It is best to use a warmary bitumen mixture. Then the galvanized and fastened with a bolt with a drill. Then you need to handle the site with special means, align the entire surface. When everything dies and the design will fix it, it should be covered with paint.