Porosity is common in aluminum welding. In the base metal, there are a certain amount of pores in the welding wire, so it is necessary to avoid large pores during weldingto ensure that the pores do not exceed the standard. When the humidity exceeds 80%, be sure to stop welding, the probability ofblo

The sticking electrode is the adhesion phenomenon between the electrode and the part caused by abnormal welding of the electrode and the part when the welder is spot welding.There are four main reasons for sticking electrodes in the welding process: the working surfaces of the two electrodes are not

Welding is a process in which the material of the workpiece to be welded (same or different) is heated or pressurized or both are used,and whether or not to use a filler material, so that the material of the workpiece can achieve atomic bonding and form a permanentconnection process. So what are the

Causes of porosity1. Base metal is dirty, the groove edge is not cleaned2. The composition and properties of the welding materials used are quite different from those of the base metal3. Welding shielding gas problema) Insufficient argon pressure in the cylinder;b) Excessive adjustment of welding ga

Tempering is one of the most likely types of accidents when using an acetylene gas cutting torch for gas cutting operations. It is a phenomenon in which the acetylene gas flame enters the torch nozzle and burns backwards. It is characterized by the sudden extinguishment of the flame and a rapid "his

The submerged arc welding process is the most ideal choice for important applications in pipelines, pressure vessels and tanks, rail manufacturing and major construction. It has the simplest form of single wire, double wire structure, tandem double wire structure and multi-wire structure. The subme

(1) The main research object of welding labor hygiene is fusion welding, among which open arc welding has the greatest labor hygiene problems, and submerged arc welding and electroslag welding have the least problems. (2) The main harmful factors of shielded electrode manual arc welding, carbon arc

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ARC TYPES IN MIG/MAG WELDINGThere are various arc types in MIG/MAG welding. They differ in terms of the level of the amperage. In the low power range the arc is susceptible to short circuits; in the higher power range it is free of short circuits.DIP TRANSFER ARCThe arc is ignited by brief contact b

PROCESS VARIANTS OF TIG WELDINGCOLD WIRE TIG WELDINGA cold-wire feed increases productivity: The welding speed increases and the filler metal is fed precisely and evenly to the weld pool. This allows even less-experienced welders to achieve outstanding results. TIG HOT-WIRE WELDINGTIG hot-wire weld