The choice and use of cold welding for the repair of radiators and heating pipes: consider in detail

disadvantages

• The quality of cold welding of Almaz Press is inferior to many other manufacturers;
• When the material dries up, it becomes very brittle;
• It cannot be used for critical connections, since it is suitable mainly for domestic purposes, where there are no high loads;
• During use, problems arise with the appearance of lumps inside the mixture itself, since it does not mix well, which negatively affects the quality;
• When in contact with dry surfaces, the outer layer tends to adhere to them;
• The service life of used products under adverse conditions is relatively short.

Application area

Glue diamond cold welding on an epoxy basis is used to connect various objects that cannot be glued with other mixtures. It can be used as cold welding for ceramics, which helps not only to connect broken objects, but also to restore lost parts. With special preparation, so that the surface of things was clean of dirt and grease films, cold welding glue Almaz Press can join metals, plastic, wood, and both homogeneous and dissimilar materials.

One of the features of its application is its regenerative function. It can be used to fill holes in structures and objects. To do this, glue is applied in a thick layer to the hole, filling the existing hole, and then solidifies, forming a dense layer. In the same way, you can restore lost parts on various objects. As if a form is being molded from plasticine, which will hold after hardening.

Cold welding Diamond for restoring lost parts on various objects

The main thing here is not to create heavy loads, as it may simply not be able to withstand them. It is for this reason that such things are practically not used in industry. Cold welding glue Universal diamond 58 g is intended for use in ordinary temperature conditions without extreme excess.

Cold welding Universal diamond 58 g

Views

In addition to the varieties that are included in the volume of the package, there are several more types that are included in the composition. According to this principle, several main types can be distinguished:

• Cold welding Almaz Soyuz is universal - it has a composition that is suitable for most procedures. It can work with both metal and other substances.
• For woodworking - intended for veneer and multilayer wood. Bonds both the parts themselves and the delaminated plates. Often used in furniture repairs.
• For repairing machines - used when joining small parts, as well as eliminating cracks and chips in the housings of internal parts. With its help, you can restore threaded connections.
• With steel filler - this is a cold welding for metal, which can peel off both colored and black varieties.
• Cold Welding Plumbing Diamond is a moisture resistant mixture capable of forming sealed joints, which is very useful for repairing pipes and other joints in plumbing.

Composition:

• Hardener;
• Epoxy resin;
• Metallic filler;
• Mineral filler.

Properties and specifications

Features of use

Instruction for cold welding Diamond assumes preliminary surface preparation before use. It must be degreased and mechanically processed. After that, the required amount of glue should be separated so that everything is in equal proportions, both the inner and outer parts. Then the substance is kneaded to a soft state, which is the main working one. In this state, it can be used as glue or to sculpt shapes to seal defects.

Manufacturer

The manufacturer is the Almaz-Group company, which specializes in the production of composite materials and supplies its products throughout Russia.

Algorithm of use

Before starting work, you need to carefully study the rules for working with Mastix cold welding. The instructions for use help to follow the sequence of actions.

The parts should be cleaned well first. There are varieties of Mastix formulation adapted to oily materials. In any case, dust, dirt, mechanical deposits should be removed.

The oil layer must be removed before using universal formulations, and specialized adhesives must be removed. Extra cleaning won't hurt anyway.

Then you need to cut the required piece from the cold welding bar and mix it well with your fingers until a completely homogeneous mass is obtained.

The softened paste should be applied to the repair site. After that, the parts must be fixed and wait in this position for 45 minutes.

If there were residues of moisture or oil on the surface, you need to gently rub the paste until you feel it sticking to the material to be glued. For smoothing, you can use flat objects such as a spatula.

After 2.5 hours, any glued parts will be finally ready to work.

The Mastix adhesive composite can be used within 2 years from the date of production. At the end of this period, the cold welding compound can simply be thrown into the trash.

It does not require special disposal. The glue is harmless when used correctly. During work, you need to ensure that the composite does not get on the mucous membranes of the eyes, nasopharynx, it is better to work with it in rubber gloves.

One of the ways to form a strong connection of parts made of metal, wood, plastic is cold welding. It is called so because of the seam, which looks like a welded one. In fact, the connection is made using a special polymer material with good adhesion properties. Thermal exposure is not applied in this case.

Algorithm of use

The parts should be cleaned well first. There are varieties of Mastix formulation adapted to oily materials. In any case, dust, dirt, mechanical deposits should be removed.

The oil layer must be removed before using universal formulations, and specialized adhesives must be removed. Extra cleaning won't hurt anyway.

Then you need to cut the required piece from the cold welding bar and mix it well with your fingers until a completely homogeneous mass is obtained.

The softened paste should be applied to the repair site. After that, the parts must be fixed and wait in this position for 45 minutes.

If there were residues of moisture or oil on the surface, you need to gently rub the paste until you feel it sticking to the material to be glued. For smoothing, you can use flat objects such as a spatula.

After 2.5 hours, any glued parts will be finally ready to work.

The Mastix adhesive composite can be used within 2 years from the date of production. At the end of this period, the cold welding compound can simply be thrown into the trash.

It does not require special disposal. The glue is harmless when used correctly. During work, you need to ensure that the composite does not get on the mucous membranes of the eyes, nasopharynx, it is better to work with it in rubber gloves.

Cold welding types

• For gluing metal products - its constituent component is a metal filler, which helps the glue to more effectively connect objects made of metal. To use it, it is not necessary to completely dry the surface - the glue is in good contact with water. This advantage allows this type of cold welding to work more effectively with plumbing. There is also no need to clean the desired part from dirt - the mixture is insensitive to dirt, so you can safely work with objects in any condition.
• A universal mixture - it can be applied to surfaces of any material. It works at all temperatures. This is a very popular form of cold welding. Due to its versatility, it should always be at hand with any owner.
• Heat-resistant cold welding - even a temperature of 250 degrees Celsius cannot destroy it. It is used for soldering all types of metals in cases where they come into contact with significant temperatures.
• Cold welding, which is used for plumbing repairs, has worked well for repairs in wet conditions. It is used to restore the thread on plumbing parts. Can join porcelain, metal products, etc.
• Welding Fast Steel is a steel filler mix that works great with steel parts. They connect or restore lost parts.
• Cold welding for an aluminum surface - it contains a filler made of aluminum, which very firmly joins products made of this material.

Cold welding characteristics of Mastix

Before deciding to use this type of glue, you need to familiarize yourself with its properties.

What you need to know about using Mastix cold welding

Starting work with this type of glue, you must first prepare the surface for work - completely clean it. After that, it is necessary to separate the required amount of cold welding, knead it well and apply it to the surface. It should take about 20 minutes before the glue takes hold of the material.

Advantages and disadvantages

The technology allows to eliminate pipe leaks with high reliability. This procedure is safe to perform, which cannot be said about conventional welding. Other benefits are:

• convenience, ease of technique, even for beginners;
• excellent seam quality, which depends mainly on the type of material, and not on the speed of work;
• no need to purchase special tools, equipment, machinery and expensive materials;
• minimum energy consumption;
• fire-fighting, anti-explosive properties of epoxy;
• low cost of repair;
• availability of cold welding - adhesives are sold in any store.

The technology also has disadvantages. Welding of this type is not designed for too high loads - pressure, strong heating. Therefore, in case of a serious defect in the pipe or radiator, it is better to use hot welding or change the section completely

It is important to observe preparation measures - otherwise, the quality of the weld will decrease. The durability of cold welding is lower than that of standard welding - repaired pipes will not last many years, but will require new repairs

In fact, such repairs are considered by specialists to be a temporary measure.

Advice

In order to properly apply the composition, it is necessary to perform a number of preparatory procedures. First of all, you need to remove dust, greasy deposits, oil stains and other contaminants from the surface. This also applies to rust, it is carefully cleaned off to provide access to the bonded surfaces. Only after the coating is suitable for work should you start welding.

Two-component formulations are removed from the package and mixed thoroughly. Liquid and solid compositions must come to a state of plasticity, due to which they can be given a different shape. Work is carried out only if safety measures are observed - it is necessary to exclude the risk of products getting on the skin.

It is recommended to control the thickness of the applied material. The first layer should not exceed 6 mm. If necessary, a second layer of cold welding is applied, but only after the previous one has completely dried out. It will be possible to operate the structure for its intended purpose when the composition is completely solidified.

Many buyers are wondering which cold weld is best. It is difficult to answer such a question, since the technical characteristics of the composition are selected individually, taking into account a number of important nuances that relate to the type of metal surfaces, operating conditions and many other fundamentally significant factors.

There are several points to look out for when buying cold welding.

• The presence of additives in the composition and their variety. The filler must correspond to the type of metal that will be glued using the composition, or have a strength not lower than that of this material.
• Indicators of the minimum and maximum temperature in the range of which the composition retains its technical performance. High temperature formulations are much stronger.
• The solidification time of the welding is often of fundamental importance. Therefore, it would be more correct to purchase two types of product: for quick gluing and a standard type. Although in most cases, the latter type provides a more reliable and high-quality connection.

Undoubtedly, the products have some disadvantages, but provided that the material is correctly selected, you can easily cope with the problems that have arisen, even if the user's professional experience is minimal.

For how cold welding works, see the next video.

Review of popular brands and manufacturers

To understand unfamiliar names and brands, consider the most popular of them. At the same time, we will study a brief description of the composition, advantages and disadvantages.

Diamond

Russian manufacturer producing universal glue. Supplied in plastic tubes, inside of which there is a mixture packed in polyethylene. It consists of two layers: outside - resin, inside - hardener. It will be enough to roll a small sausage in your hands, mixing the components so that the mixture hardens. Disadvantages: does not withstand high loads, suitable for domestic use.

Polymet

Another domestic manufacturer recommended for critical connections, including those working at high temperatures.

Weicon

Cold welding for a wide range of applications. Focused on the repair of metal products made of titanium, aluminum, steel, copper, plastic, wood and concrete. It is well sawn, drilled, sharpened (frozen). Withstands up to 300 degrees.

Hi-gear

The adhesive is stated to be metalwork oriented. One of the types is called “fast steel”. Withstands a seam shear force of 1.2 thousand Newtons.

Poxipol

Universal composition for home, summer cottages, garage repairs. Connects plastic, metal, wood, is not afraid of snow, rain, dust.

Abro

American glue recommended for motorists. Suitable for repairing damage to the crankcase, battery, bodywork, even the engine block. It is used as a composition for the restoration of sanitary ware, withstands high temperatures. Black color. Oil resistant.

Permatex

A universal compound that can withstand both shear and pull-off loads. Gives a stable result, is irreplaceable in the household.

Mastix

The composition of the mastic is tested for durability in contact with water, in the repair of heating radiators. It can work even without drying the contact surfaces.

Henkel

The German manufacturer is known for the Supermoment product. Differs in stable indicators of seam strength, but it may not withstand significant tensile loads.

Wurth Liuguid Metal Fe 1

The products of the manufacturer from the Federal Republic of Germany demonstrate a resistance to a force of 2 Megapascals in a pull-off test, but cannot withstand shear stress.

Kerry "Thermo"

A highly specialized composition with metallosilicates, oriented to temperatures up to 900 degrees. Suitable for car repairs, filling cracks and sinks.

Homakoll s401

Designed for joining PVC, linoleum. Provides a durable and elastic seam. This limits the scope of application of the glue.

Amethyst

Cold welding for metal and plastic. Gives a good result, made in Russia. The frozen composition lends itself to mechanical processing - it is sharpened, cut, sawed.

Installation of the heating circuit by cold welding

Cold welding is the connection of two or more elements without heating them up. The bond is formed by chemical reactions in the adhesive. Plasticity, high adhesion and fast solidification into a solid mass are the distinctive features of the components used for cold welding.

The adhesive composition can include various elements to improve the mechanical characteristics of the adhesive joints. The compositions are usually based on epoxy resin, and the filler is a hardener. The packaging indicates whether it is possible to weld heating pipes with cold welding, or whether it is a composition for repairing plastic pipes of the cold water supply circuit.

Cold welding is a plastic mass that provides a hermetically sealed pipe connection

There are two types of components for cold welding:

1. A plastic two-component substance that must be thoroughly kneaded immediately before use to mix the components. The advantage of this type of cold welding: the composition is quickly prepared, stored for a long time, requires minimal preparation before use. Disadvantage: hardens quickly, must be applied very carefully, it is recommended to use it as soon as possible after preparation.
2. Liquid components. Before starting the application, it is required to combine the substances in the proper proportion, and the glue is ready for use. Advantages of a liquid composition for cold welding: the adhesive easily penetrates deep into the joint, forming a durable layer that is resistant to mechanical stress during solidification. Disadvantage: requires special conditions for long-term storage. Different materials - plastic, metal - require different chemical components.

The main advantage of any kind of cold welding is the ability to quickly repair a section of a water supply, heating or sewerage system without shutting off the water supply. Welding, or in this case, gluing of components can be done in conditions of increased fire hazard.

As a repair compound for cast iron heating radiators, the surface should be carefully prepared for the use of cold welding. Despite the strength of the joint, the repaired section may not withstand the maximum pressure test.

For plastic plumbing systems, the cold welding method is recognized as one of the best solutions for local repairs when it is impossible to replace the damaged element. Also, cold welding is successfully used to restore the tightness of butt seams on plastic water pipe fittings.

Cold welding is an effective method for urgent repair of any pipe

Waiting time for the finished composition of cold welding: from 2 to 20 minutes, depending on the intended purpose. Temperature range - from 0 to 1300 degrees.

It is enough to read the instructions for use in detail, and the installation of the system will be successfully carried out. For work you will need:

• container for the preparation of the composition;
• gloves to avoid skin contact. It is recommended to moisten them with water;
• thin spatula, for applying a viscous composition to the area of ​​use;
• compliance with safety rules when working with chemical components.

If the composition gets on the skin or in the eye area, it is recommended to rinse the affected area of ​​the skin and, if a burning sensation occurs, consult a doctor, having with you the packaging from the "cold welding" components.

Application area

In recent years, plastic has been increasingly used in various types of technology and other areas. Accordingly, cold welding for plastics is becoming more in demand every year. It is worth highlighting the main areas of application of this material:

• Repair of plastic instrument cases;
• Putty on bumpers on cars;
• Repair of fishing rods;
• Sealing leaks in plastic pipes;
• Bonding of plastic elements.

It is worth noting that cold welding glue for plastic is capable of attaching other materials to it, which expands its scope.

Suitable brands

There are many brands that can fit this case. After all, not so high requirements are put forward here as, for example, for cold welding for stainless steel. EP380 is one of the most common and easy-to-use brands. It has the following parameters:

In addition, there is an even more reliable option, which is cold welding for plastic Poxipol... It refers to two-component, in which each material is in a separate container. This mixture has the following parameters:

Choice of cold welding for plastics

Selecting the right brand is quite difficult, since there are many different options on the market that are difficult to list. To make the right choice, you need to be guided by the technical parameters of the product. If operation at high temperatures is planned, then it is advisable to find out what temperature cold welding can withstand, since it often turns out to be lower than that of the plastic itself, which can interfere with normal operation.

Features of cold welding of plastic

One of the main parameters is the strength of the connection, so you need to know the data for tensile and shear, depending on what loads the product will be subjected to. The strength of the connection also contributes to the resistance to vibration loads. If you need a tool for quick repair, then you need to select a material that dries quickly. The spread in this parameter is from 3 to 15 minutes.

Instructions for use

Instructions for the use of cold welding for plastic require a clear sequence of actions. The first step is to prepare the surface to be joined. Processing is carried out using solvents and sandpaper to remove grease and increase the area of ​​the joint. Without degreasing, the quality of the joint begins to drop sharply.

Surface preparation for cold welding of plastic

After that, you need to measure the amount of cold welding used, since after stirring it can no longer be reused. When preparing, you need to measure out an equal amount of each component. Then you need to start mixing, you should get a homogeneous mixture of soft consistency. It can be used to sculpt figures to seal cracks and chips, and also be used as glue. A few minutes after kneading, the mixture will begin to harden, so do not delay the repair process.

After applying to the surface, you need to press down the mixture with something. If pipes are connected, then it is advisable to use a tourniquet. Otherwise, you can make any press yourself.

Security measures

Like many other materials, plastic cold welding requires certain safety precautions. After all, this is not the safest remedy for health. The following situations should be avoided:

• Contact with the composition of the mass in the eyes of a person or on open areas of the skin;
• Storage of the product in direct sunlight;
• Work with the mixture without protective equipment such as gloves and goggles;
• Storage in a place accessible to children;
• Contact of cold welding with food and other foreign objects with which a person will then come into contact.

If the mixture gets on the mucous membrane, rinse it with water as soon as possible. After that, it is advisable to see a doctor. If there was contact with the skin, then this is not so scary and you can do with thorough washing with soap.

Using cold welding to repair pipe leaks

Before starting welding work, it is necessary to shut off the valves of the stop valves, drain the water, and provide good access to the problem area. The area with cracks and chips is cleaned of dirt, degreased. Be sure to remove old layers of paint. Old paint at the leak can be cleaned with coarse sandpaper or grinder using special nozzles.

If repair work is carried out during the heating period, it will not always be possible to drain the water from the system. Sealing of defects is carried out on a functioning line. In this case, one should not rely on high-quality adhesion between materials. The flowing liquid does not allow the glue to stick well to the area.

To eliminate fistulas, it is necessary to use cold welding in liquid form. The fabric is well impregnated with it and the damaged fragment is tightly wrapped. Such repairs are temporary, in the off-season it is recommended to eliminate the leak thoroughly. Plastic and polymer pipes are welded together according to the following scheme:

1. In places of gluing, pipe sections are treated with sandpaper to improve adhesion. The procedure allows you to remove various impurities that prevent high-quality adhesion.
2. At the ends of pipes with a diameter of 10-20 mm, the perpendicularity tolerance should not exceed 2 mm.
3. Coupling joints are treated with emery, removing a thin layer of plastic in the range of 0.1-0.2 mm over the entire diameter. The surface area must be at least half the length of the sleeve. Gross defects and burrs are not allowed.
4. Mix the adhesive according to the instructions. The finished mixture must be consumed within 3 minutes.
5. After applying the mixture to the elements to be connected, the finished pipe section is clamped with a press. The manufacturer indicates the permissible weight on the cold seal packaging.

8 hours after the repair, the pipeline is ready for subsequent operation. This method is suitable for the installation of pipelines and spot repairs.

Varieties

Cold welding is available in several modifications, each of which has special performance characteristics, designed to work in specific conditions and with a specific material.

• Welding for metal products. The series is designed for the repair of plumbing and pipelines. The composition of the mixture includes a metal filler, which ensures high bond strength and guarantees the durability of the seam. The glue is not afraid of excessive moisture, so it can be used on wet surfaces without preliminary drying. Models in this series are divided into several types, each of which specializes in gluing a certain material.For example, a special composition "Fast Steel" has been developed for working with steel bases, and for the installation of aluminum structures there is a mixture containing aluminum fillers and intended exclusively for this metal.
• A universal option. This type of welding is the most common. It is distinguished by the strength of the joint, it is quite effective on any surfaces.

• The heat-resistant composition has a red packaging color. It does not lose its performance when the temperature rises to 250 degrees.
• Plumbing mixes are intended for the repair of metal and porcelain elements. They are distinguished by high waterproof properties and durability of the connection.

Instructions for use

Before starting work, it is required to study the instructions for use from the cold welding manufacturer Mastix. The work must be carried out in the following sequence:

1. First, the preparation of the working surfaces is carried out: cleaning from scale, traces of rust and other contaminants. Surfaces need to be wiped, dried, degreased (if possible).
2. At the second stage, it is required to separate a third of the rod, and mix the components with rubber gloves soaked in water. Correct mixing will be indicated by the shade of the mixture: uniform, without lumps, noticeable inclusions, streaks.
3. At the third stage, the resulting mixture must be applied to two surfaces to be joined, connected to each other, and fixed.
4. The duration of fixing parts in time is 15-18 minutes.

If the surfaces are dirty, oiled, moistened, then the strength characteristics of the resulting compound decrease by about 20-30%. This is when compared to prepared and clean surfaces.

If the work is carried out in conditions of negative temperatures, then during the preparation process, warm the mixture in your hands for several minutes. Be sure to keep it warm before using it in the cold.

By the way, according to my observations, the instructions are generalized in all tubes. In which recommendations are spelled out, separately for all types of Mastix brand glue.

1. Andrey, 35 years old: “My child constantly breaks and spoils something, so I often have to glue everything together. I always used regular superglue, but then ran into a broken metal chest of drawers handle. The handle was heavy, so you can't put it on superglue. I bought cold welding Mastix "Universal" in a hardware store. Mixed according to the instructions, applied to the surface. As a result, the pen has been holding for several years.
2. Mikhail, 44 years old: “For the first time I had to use Mastix cold welding at my dacha - there was a hole in the aluminum bucket, which I didn't want to throw away. As a result, I mixed two substances according to the instructions, it turned out a mass in the form of plasticine. I closed the hole for it. As a result, the mass froze, it turned out to be something like metal. The bucket no longer leaked. I think now to seal the holes in the water barrels with this cold welding. "
3. On my own behalf, as the author of the site, I will add that I have applied this welding successfully several times. "Universal" firmly glued the decorative part of the handle to the dresser in the bedroom. The handle is always under load, watch my video here. Other options were not suitable for gluing either plastic or laminate. “Heat-resistant” he welded a serious crack in the battery, as he overdid it with a tightening at the junction of the pipe and section. There is no pressure in the heating, the cottage is private. So I don’t know if it is suitable for a centralized system. I think it won't be a problem for a small leak. I also like the democratic price of the glue, plus a large selection of the range of use.

Views

Cold welding "Almaz" can vary in volume and composition. In terms of composition, it is divided into several types.

Universal glue "Soyuz" can be used in works of different directions. The type of surface does not matter, it is used with both homogeneous and dissimilar materials.

When repairing furniture and working with wood, cold welding is used for woodworking.It helps to eliminate delamination, and also adheres well to the coatings themselves.

A special subtype of glue is also used in car repairs. With it, you can glue small parts, get rid of chips on the machine body. Also used for thread restoration.

When working with metal objects, it is recommended to use cold welding "Almaz", in which there is a steel filler. Can join nonferrous and other types of metal.

Plumbing adhesive - moisture and heat resistant. When using it, tightness is achieved. It is used when working with pipes and other plumbing connections.