How to glue metal to metal durable and reliable?

Top brands

For domestic needs, compositions with an upper temperature limit above + 120 ° C are rarely used, this is due to the peculiarities of the operation of products. Heat-resistant adhesives are used in the automotive and aviation industries, where special requirements are placed on the bonding technology and the product itself.

Popular home adhesives are listed below.

Superglue "", which allows you to glue metal to various materials. The composition contains hardeners and epoxy resins. The product is resistant to low negative temperatures, oily substances, solvents. The adhesive seams do not flow or shrink during hardening.

Refers to semi-professional and household products, it is a paste that can qualitatively combine ceramics, plastic and various metals. After the final hardening, a very hard and at the same time brittle seam is formed, for this reason it is recommended to use glue only for products that will not undergo a change in shape during operation. Initial hardening occurs at room temperature in 2 hours, final - at a temperature of + 80 ° C for one hour. Maple-812 should not come into contact with open fire. The product is packaged in 250 g each, the price of one container is approximately 1650 rubles.

VK-20
is polyurethane, due to the catalysts in its composition, it is resistant to short-term heating up to + 1000 ° C. The glue is easy to use, the surfaces are joined within five days at room temperature. If you need to speed up the process, you need to heat the product to + 80 ° C. The glue has excellent adhesion properties, is waterproof, two-component (after combining the components, the product is suitable for use for seven hours).

It is made from special resins, urotropine, quinoline and organic solvents. The formed seam can withstand heating up to + 200 ° С for eight days, + 300 ° С - for a maximum of five hours.

How to use:

• apply a layer of ВС-10Т on the surface and leave for 60 minutes to remove the solvent;
• connect the surfaces and put them under the press (pressure should be 5 kgf / m 2);
• place the product in a heating cabinet for 2 hours at a temperature of + 180 ° С;
• remove and let the structure cool down at room temperature.

The product can be fully used after 12 hours. ВС-10Т is sold in containers of 300 g, the price of one is about 1950 rubles.

K-300-61
refers to special products, three-component, consists of amine hardener, filler and epoxy silicone resin. The consumption is approximately 200-300 g / m 2. It is difficult to find on sale, it is sold in bulk in metal containers of 1.7 liters.

The main criterion when choosing a composition is its adhesion characteristics, the porosity and roughness of the parts, the area to be adhered, as well as the conditions in which the product will be used, are also assessed.

How to use correctly

It is not enough just to buy the first glue that comes across and spread it on two halves of the parts. A structure glued in this way will serve you for an extremely short time. To glue things securely and without problems, remember the following rules:

1. Do not forget to pre-prepare the surfaces to be glued, cleaning them from dirt and grease.
2. Treat the surface to be glued carefully, evenly applying the substance over the entire area. Missing areas will reduce the adhesion strength of the parts.
3. Read carefully the instructions for use from the manufacturer.

Static rigid bonding

An excellent way to quickly and firmly glue parts that are not subjected to serious physical stress during operation. These include:

• home furniture;
• shop windows;
• signboards;
• racks in warehouses.

Note! Dynamic objects undergoing significant physical stress cannot be glued tightly in this way.

Deformation

Suitable for working with dynamic objects, the load on which is an order of magnitude higher than usual. You can also glue static objects if they are constantly affected by large temperature drops.

Epoxy resin

Using epoxy resin allows you to achieve:

1. Creation of an elastic seam at the seam.
2. Protection against destruction of the connection during temperature fluctuations.
3. Speeds up the work of rebuilding the part, as the epoxy hardens quickly.

How to glue plastic + plastic and metal + plastics

Suitable for gluing / gluing various types of materials: metals, most types of plastics, wood, without preliminary surface treatment with primers and primers. 3M 760 Hybrid Adhesive Sealant is a one-component, isocyanate-free sealant that forms a strong elastic joint that is resistant to a variety of chemicals. It cures quickly when exposed to atmospheric moisture and forms a flexible and durable bond with very good adhesion to most materials. It is used in the production of vans and special equipment (for gluing external strapping to sandwich panels), in truck bodies, in shipbuilding, in air conditioning and ventilation systems, in sandwich panels and in many other areas of industry; where maximum bond strength is required.

Shore hardness is 55, film formation time is 10-30 minutes. Application temperature: from + 5C to + 35C It can be used both indoors and outdoors, in conditions of 100% humidity and at temperatures from -40C to + 100C. Full curing 3 mm per day.

Advantages of 3M 550 PU: - One-component (Does not require stirring); - Wet paintable; - High resistance to chemicals; - Excellent resistance to UV, environment; - Low volatile content; - Skin formation 10-30 minutes; - Moisture-curing; - Medium plasticity / elastic (Permanent elasticity); - Binds to dissimilar materials (Well suited for materials with different coefficients of thermal expansion); - Curing 3 mm per day; - Can be painted immediately after application to the surface; - Bonding, sealing, sealing of joints, water protection and shock absorption; - Cartridge (295 ml), "sausage" (600 ml) - suitable for conventional squeeze applicators; - Unlike silicone adhesives and liquid nails, 3M 760 does not shrink , does not shrink and does not deteriorate over time; etc. Consumption: 180 g / running meter with a joint width of 5 cm and a depth of 0.3 cm

Available colors: White, gray, black

Packaging: • Cartridge 295 ml • Foil tubes ("Sausage") 600 ml

For the purchase of industrial adhesives - sealants, other materials, for technical advice, please contact our specialists by phone: (495) 642-73-04

Concrete adhesive

The most common building material is concrete. Adhesives for it are divided into two categories:

1. Adhesives that are relevant in working with the same type of compounds, for example, with glass, metal, rubber. In this case, glue is consumed more economically than concrete mortar.
2. Compositions that can interconnect components of various types.

Most concrete adhesives contain cement as the main component. Non-cement types include epoxy adhesives that contain a mineral filler in the base.

The main characteristics of the quality composition:

1. A good mixture does not film over within 20 minutes.
2. The glue does not lose its properties within 1-4 hours.
3. The maximum slip threshold is half a millimeter.

Epoxy adhesive

It is used in working with metal, stone, glass and tiles. Due to its versatility, it has been in maximum demand for many decades in all repair shifts. Epoxy adhesive is used for the manufacture of cement screed, surface restoration and in rooms with high levels of humidity.

Typically, these formulations are sold in metal packaging. You need to wait several hours for hardening (depending on the specific type of glue and air temperature).

Thanks to the use of such a composition, a stable type of joint is created that is not affected by oils, solvents, which guarantees high-quality work with wood, metal and concrete.

At work and at home, situations arise when you need to glue two metal surfaces. Welding, traditionally used to weld one piece of metal to another, and the precision work of machine operators have been replaced by new methods. When choosing how and what to glue metal to metal, Loctite glue is in the spotlight. Due to its fast fixing, reliable connection of parts, convenient application, the adhesive is in demand in workshops for the repair of household appliances, transport. They also use glue at home.

In Loctite products, fast polymerization, adhesion strength are adjacent to other properties that are important for the operation of the glued part.

For difficult to bond materials like metal, its combination with plastic, it is used to join plastic and elastomer. Low viscosity glue is applied in a thin layer, up to 0.25 mm. Strong adhesion is ensured when the parts are tightly joined. The glue is effective when gluing small parts - it sets from 2 to 10 seconds, withstands high temperatures (+120 ° C) and low (-40 ° C).

It is intended to connect in different combinations the surfaces of metals, plastics, rubbers, glue of medium viscosity. Loctite is applied to a metal surface after degreasing. Setting time from 30 sec to 1 min for mild steel, 40 - 80 sec for aluminum, from 30 sec to 1.5 min for zinc dichromate allows you to glue complex and large parts with glue. The manufacturer does not recommend using the composition in an environment rich in oxygen and other oxidizing agents.

You can glue different metals with a high adhesive agent. The resulting high strength compound allows the use of abrasive processing of the resulting part.

Static rigid bonding of metals

Static adhesives have a high Shore hardness plus high mechanical strength. The glued structures are monolithic and have enormous shear resistance. Static structural bonding of metals is applicable in those structures where dynamically changing loads do not occur:

How to remove adhesive from metal?

1. The first type of the most effective means for cleaning metal from old glue is considered "Super Moment Antique". It will help you completely get rid of all-purpose PVA glue, instant glue and various polyurethane-based adhesives. The gel base allows you to apply even on a vertical surface.
2. The second option is the use of the drugstore "Dimexid". It is necessary to well moisten a cotton wool or a cloth in this composition and treat the surface until the glue spot disappears completely.
3. Not the last place for removing glue is taken by such common means as: "White Spirit", acetone, the cleaning component "Contact" and how not to remember about gasoline.
4. Manicure and pedicure professionals use emulsions to soften acrylics. They will effectively help dissolve super glue from the metal surface.

How to glue metal to metal

There are several types of glue that are most commonly used when gluing metal surfaces to each other:

Metal-to-metal bonding

1. Epoxy adhesive. This type has the highest water resistance. Consists of two types of epoxy resins that are mixed with each other;
2. Super glue Moment for metal "Moment Super Epoxy metal" - applied in a thin layer, firmly glues metal surfaces;
3. Cold welding, consisting of two tubes with substances for various purposes - one with an active adhesive, the other with a special substance for hardening;
4. Double-sided tape - glues metal to metal and other surfaces.

Regardless of the type of glue used, actions during preparation and directly gluing metal surfaces, you need to do the following:

1. Clean, degrease the surfaces, in case there is a need to get rid of traces of corrosion - pre-grind the surface;
2. To study the instructions for the glue, if any, if cold welding of two substances is used, it is necessary, without deviating from the recommendations of the instructions, to mix them;
3. Apply glue in a thin layer on both surfaces so that when the surfaces are compressed, the glue residues would not come out;
4. Squeeze the surfaces firmly and wait for the glue to set. The time, as a rule, is indicated in the instructions for use of the glue, ranging from 5 seconds to a minute. You can put something heavy on the surface if their size allows you to do this or use special clamps or vices;
5. In case there is a seam from the glue, which may interfere with further operation, you can carefully sand it with sandpaper;
6. For small items, you can use double-sided tape in the case when the surfaces will not be subjected to intensive mechanical use. To do this, stick a strip of adhesive tape on one surface with the sticky side, then remove the protective film and attach the second surface to the glue base that appears and press down. In this case, you do not need to wait for solidification, you can immediately start using the glued object.

How to firmly glue plastic

This method will help even if the glue needs to be removed from the hands.

There are many different companies that produce such a tool - among them the most popular are Anticlea moment, Anticlea second

As you can see, it is not that difficult to glue metal to various surfaces - almost any type of glue can be found even in the utility departments of supermarkets. The instructions are simple, they can be followed even by a person far from construction and repair, you just need to strictly follow all the advice recommended by the manufacturer.

What glue to glue plastic to: plastic, metal, chipboard, tiles, concrete

The modern world is unthinkable without plastic products, light material is used everywhere: construction, decorations, furniture, dishes, decorative elements, household appliances. Polymer products do not rust, are beautiful, but not always durable. Therefore, breakdowns of plastic objects happen often, every time as soon as something is dropped, there is a problem of how to restore the broken product.

Do not be upset - there are no eternal objects, you should not throw out a broken thing. Today there are no problems in the repair of any material, even polymer. You just need to think about how to glue your favorite thing.

Types of glue for metal products

Of the many types of glue designed to glue metal to metal, several groups can be distinguished:

• Double-sided tape. It is produced in the form of a synthetic tape of various thicknesses with an adhesive applied to both sides. The width of the tape is selected based on the desired width of the adhesive bond. Has a high degree of ease of gluing metal parts. The thickness of the tape allows you to obtain a tight glued seam in the event of a loose fit of the parts.The disadvantages of double-sided tape include low strength of the glued seam and low durability.
• One-component mixtures. Available in a variety of rubber or silicone based adhesives. The compound that allows you to glue the parts is polymerized in air or under the influence of moisture in the air. The hardened compound resembles dense rubber. The most versatile in use, they allow you to glue not only metal, but also products from other materials. Of the minuses, it is worth noting the low strength of the glue seam and the need for careful preparation of the surfaces to be glued.
• Two-component adhesive. The base is polyurethane or epoxy resin. For polymerization, special hardeners are used. They can be both liquid (for example, "moment" glue), and in the form of a paste (cold welding). Possesses excellent adhesion properties, the seam is strong and durable. Allows you to join workpieces from different materials. Two-component compounds form the strongest and most durable seam, which sets much faster than one-component.

Adhesive selection

What glue is better to use, what are the selection criteria? If you need to firmly glue metal to rubber, you should look for a product with enhanced adhesion, which gives a reliable seam, while elastic

It is also important to consider a number of factors:

• humidity and temperature in the rooms where the gluing will be made, and then the operation of the product;
• load on the surfaces to be glued;
• the need for high aesthetic properties of the finished product;
• the degree of chemical aggressiveness of the adhesive, taking into account the type of metal.

When buying, it is important to clarify in the instructions or on the packaging that the manufacturer guarantees the suitability of the composition for rubber and metals, alloys. Universal means are far from always suitable for such a complex joint, as well as for joining other dissimilar materials.

After drying, the seam should not flake off from the base, must be heat-resistant and not change the strength under the action of low temperatures.

For cars, it is often advised to buy products such as "liquid rubber". They can perfectly glue rubber surfaces, as if becoming part of them, therefore they are invisible from the outside. The water resistance of the glue is another important point when choosing; this property is required by almost every user, especially a car owner. If necessary, you can buy glue that will allow you to operate the parts even under water.

When joining rubber and metal, it is important to exclude corrosion, therefore, there is always a note on the safety of the composition on a high-quality glue. A separate type of adhesives is considered to be the means for silicone rubber, which is soft, pliable.

On the tube of such glue there is an inscription “for elastic materials”.

The best brands for bonding

How to glue metal or other complex materials to rubber? For this purpose, it is worth purchasing only proven formulations:

1. 88CA. Resin glue on organic solvents, contains phenol-formaldehyde resin, nefras, ethyl acetate. It fits perfectly both on painted material and on concrete, glass, wood, suitable for dissimilar substrates. The composition is waterproof, does not flake off from the action of moisture, after drying it does not give off toxic fumes. Does not interact with metal, therefore does not provoke corrosion.
2. U425-3. The properties are similar to those described above, since they have a similar composition. It is used for bonding with subsequent vulcanization, if required.
3. 4NB-UV. The glue is oil-resistant, waterproof, but withstands heating only up to +60 degrees, while it is frost-resistant - it is not damaged from freezing to -40 degrees. They can glue rubber, rubber-fabric materials, metal. Such a composition forms a very elastic seam, has a residual stickiness. It is ideal for repairing various rubber products, boats, chemical protection suits.
4. Radical.This glue can serve even in seawater, does not deteriorate from the action of salts and alkalis, therefore it is popular among fishermen (it is used to repair any boats).
5. The moment is rubber. Suitable for hard and foamed rubber, provides high strength, water and oil resistance, elasticity of the glue line.

Also, for complex surfaces, adhesives such as Super-NN, Rogneda, Loctite Super Fast are often used. Some users make rubber adhesives on their own in order to save money. To do this, soft rubber is crushed and filled with aviation gasoline to completely cover the mass. After 2-3 days, the liquid is filtered off. After keeping it warm for another couple of days, the glue will be ready.

Determining the material

It turns out that the polymer is different, so sometimes all our attempts to glue a polymer product do not lead to the desired result.

It is impossible to determine the type of polymer by eye, by touch, therefore, we will examine our product for the presence of markings that externally resemble a Mobius loop with different meanings. The types of polymer can be seen in the photo. Depending on the marking, you can pick up the glue for any product today. But even in the case when advertising beckons to purchase a universal miracle glue, you should not count on effective gluing, perhaps this is just a PR trick.

Having "learned" the material from the polymer closer, you need to choose your own solvent for its type:

1. PA66 is glued with formic acid solvent.
2. For the PMMA grade, it needs dichloroethane.
3. ABS - acetone based glue will do.

Varieties

There are several types of adhesives for bonding metal surfaces:

1. Epoxy. It comes in the form of a paste or a two-component liquid. It contains resin and elements that promote rapid hardening. It can withstand high temperatures, moisture and wear well. It can be "Moment" or BF-2.
2. Double-sided tape, which comes in various shapes and sizes. The choice of type depends on the surface area and its dimensions. Bonding is easy and the resulting seam is not affected by environmental factors. Best suited for sheet metal work.
3. Cold welding (heat resistant adhesive). It is a powerful adhesive that can be one- or two-component. The essence of the action is penetration deep into the surfaces to be glued due to the deformation of the welding mass. The material is not sensitive to high temperatures. An example is Poxipol glue.

How to glue plastic

The type of plastic is established, the desired glue is selected. How to glue plastic items correctly:

1. Details should be cleaned. If necessary, degrease the item with soapy water or ethyl alcohol. A clean surface has more adhesion and the items will be easier to glue.
2. It won't hurt to lightly sand the surfaces to roughen them. This will help the glue stick better.
3. Two-component compounds are mixed only after surface preparation.
4. If the parts are covered with glue with a brush, then an object with artificial bristles is taken.
5. The adhesive is applied in such an amount that, when compressed, its excess does not come to the surface.
6. You need to squeeze objects together tightly, but carefully.
7. The adhesion time of the materials depends on the selected adhesive.

Advice! Use a needle to glue a thin crack.

Sometimes you need to attach a wide variety of materials to plastic: wood, glass or metal. In this case, the adhesive must take into account the characteristics of the two surfaces to be joined, and not just the plastic.

Glue Super moment

Tips for working with plastic:

1. For outdoor use, waterproof glue is used.
2. Despite the high temperature that the glue can withstand, the plastic objects themselves should not be exposed to it.
3. When working with contact adhesive, it is necessary to ventilate the room.
4. The best adhesive for marking 7 (O) is epoxy.This type is also suitable for polystyrene.
5. If there is no marking on the product, then start from this: for plastic toys and artificial glass, polystyrene is taken mainly; for bottles, buckets and boxes, glue designed for polypropylene and polyethylene is suitable.

Take the time to study the labeling of plastic products and glue. If the repair of small toys such as "Lego" is a simple process, then for more serious work, the usual Secunda glue may not be suitable.

Effective options

When you visit a hardware store to purchase metal glue, your eyes literally run up with variety. In such a situation, it is difficult to choose the right product, which baffles most buyers. In order not to find yourself in a similar situation, choose one of the most effective options presented below.

Epoxy

Adhesive mixtures made on the basis of resin and various fillers, among the advantages of which are:

• wear resistance;
• resistance to moisture;
• they easily tolerate significant temperature changes.

Cold welding

The basis of the action of cold welding is the penetration of the adhesive into the material of the part, which, when solidified, creates an effect similar to a weld. Parts connected in this way are difficult to separate from each other, and the seam itself is capable of withstanding ultra-high temperatures.

Double-sided tape

Special tape coated with high quality adhesive. With its help, both halves of metal parts and parts made of different materials are connected. The structure, fixed in this way, has high strength, and the joint successfully transfers the impact from the outside.

Anaerobic

A separate group of adhesives for metal, the work of which is based on the curing of the adhesive only when oxygen is no longer available to it. Such a connection becomes completely sealed, and in terms of strength it is not inferior to other types of adhesives.

Cyanoacrylate

Cyanoacrylate glue belongs to the category of universal products used for joining materials of various origins. Advantages of the mixture:

• durable seam;
• the mass hardens quickly;
• the seam remains stable over a long period of time.

Disadvantages:

• when the ambient temperature exceeds 100 o, the strength of the connection is destroyed;
• not suitable for gluing parts between which there are large gaps.

Polyurethane

Polyurethane glue differs from other analogs in the amount of synthetic resins used to make the product. They account for more than 90% of the total mass of the substance, which is significantly higher than in other products of a similar purpose. Thanks to this composition, the fastening of parts to each other is reliable and durable.