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Overhead welding is welding in which the welding position is below the level, and it is also the most difficult welding among the four basic welding positions. Since the molten ...

Welding quality inspection refers to the inspection of welding results, the purpose is to ensure the integrity, reliability, safety and usability of the welded structure. In add...

One. Methods to reduce internal stress 1. Hammering and forging - mechanical method When welding and repairing long cracks and surfacing layers, it is necessary to continuously ...

Concept and classification of gas metal arc welding An arc welding method that uses a melting electrode, an external gas as the arc medium, and protects the metal droplets, weld...

The molten pool refers to the part of the base metal that is melted into a pool-like shape due to the heat of the welding arc. The part of the liquid metal with a certain geomet...

Heat-resistant steel refers to steel that has both thermal stability and thermal strength under high temperature conditions. Thermal stability means that the steel can maintain ...

Non-destructive testing is to use the characteristics of sound, light, magnetism and electricity to detect whether there are defects or inhomogeneity in the inspected object wit...

The factors affecting the stability of the welding arc mainly include the following aspects (1) Welder operation technology and automatic welding arc length automatic adjustment...

The relationship between welding speed and weld quality should be understood dialectically and should not be neglected. It is mainly reflected in the heating stage and the cryst...

Submerged arc welding is mainly suitable for flat welding position welding. If certain tooling aids are used, fillet welding and horizontal welding position welding can also be ...

In addition to process factors, other welding process factors, such as groove size and gap size, inclination angle of electrode and workpiece, spatial position of joint, etc., c...

What is welding slag inclusion? Welding slag inclusions are generally divided into two categories. The first category is metal slag inclusion, which refers to the residual metal...