Cold welding for metal - a universal tool for minor repairs

Surely those who have ever been engaged in repairscars, central heating pipes, sanitary ware, etc., came up against such a concept as cold welding for metal, and for certain will say that it is such a two-component glue with the addition of metal powder. On the one hand, this is so, but on the other hand, such an answer would be incomplete, because this concept has another meaning.

1. Cold welding by the method of plastic deformation

According to the existing GOST 2601-84, coldmetal welding is welding produced without the use of any heat sources, the connection of metal parts at which occurs due to the considerable plastic deformation resulting from the mechanical action on the joined elements.

This type of welding is used for joiningdetails from copper, nickel, lead, silver, cadmium, iron. Especially this method is effective for bonding parts from dissimilar metals or using metals that are sensitive to heat. Cold welding by the method of plastic deformation can be point, suture or butt.

Soldering of elements by this method is a rather complicated process and requires special equipment, and therefore the most widespread (especially in everyday life) got another way.

2. Cold welding for metal based on epoxy resin

This method is unique in that it allows you to connect parts from a wide variety of materials: metal, ceramics, plastic, glass, wood, etc.

Cold welding available on the market today formetal, the price for which usually does not exceed one hundred rubles, is available in various packaging options: brusochki, jars, tubes. But, regardless of the version, the epoxy glue with the addition of metal powder to impart special strength is mandatory. In addition, there are added all kinds of fillers, modifiers, plasticizers, etc. In any case, cold welding for metal has in its composition two components - resin and hardener, after mixing which begins the process of solidification.

Since this type of welding is sufficiently tight, it is often used to repair pipelines, gas tanks, radiators (including central heating radiators).

Cold welding for metal: instructions for use

Depending on the type and manufacturer, it canproduced in two tubes or jars, which must be mixed before use. The most practical option is cold welding for metal in the form of a rod.

Use it is not difficult. First of all, you need to prepare fastened surfaces, which must be cleaned of dirt, if possible, wash and degrease. For this purpose, gasoline or any solvent is suitable. Then it is necessary to take the necessary amount of welding with wetted hands and knead in hands for about 3-5 minutes until it looks like plasticine in its consistency. After that, apply it to the parts to be joined and press it down. If necessary, remove excess welding with a spatula. Full drying of cold welding occurs in a day, after which the product can be safely operated.