The purpose and classification of welding

Welding, is a kind of joint in the form of heat, high temperature or high pressure metal or other thermoplastic materials such as plastic manufacturing process and technology. Welding is to use all kinds of fusible alloy (solder) join the process of metal parts. Soldering tin melting point is lower than the welding materials, this part will be in the case of not been melted, through its end welding equipment surface contact between the molecules.

Welding through the following three ways to realize the purpose of the joint:
1. The heating to joint the workpiece to form the partial melting of molten pool, pool and joint after cooling solidification, can melt filling material by adding auxiliary when necessary;
2. Separate heating with low melting point solder, without melting the artifact itself, by capillary action of solder connection artifacts (e.g., soft soldering, brazing);
3. In an equal to or lower than the melting point of workpiece temperature with high pressure, composite extrusion or vibration make the mutual infiltration between the two artifacts joint (e.g., forge welding, solid-state welding).
With leading domestic high power optical fiber transmission technology, projection welding machine equipment performance close to the international similar products level, can implement transfer spectral processing; Germany of imported optical fiber, has a stable energy, low fiber loss, large processing depth to diameter ratio, etc; And optional, implementation of special welding robot and online production.
Welding can be divided into soft and hard, soft soldering temperature below 450 ℃, brazing is higher than 450 ℃. Hard welding is usually used in silver, gold, steel, copper and other metals, the welding point is more strength than soft welding, shear strength of soft welding 20-30 times. The above two kinds of thermal coupling are usually use the term welding spot welding machine, because in the two cases are the molten solder written to two device for cleaning and approached in the narrow gap on the surface of the solid metal.