There will be some defects in the welding process of stainless steel welded pipe, and the defects of stainless steel welded pipe will lead to stress concentration, reduce the bearing capacity, shorten the service life, and even cause brittle fracture. According to the general technical regulations, cracks, non-penetration, non-fusion and surface slag inclusion are not allowed; Defects such as biting edge, internal slag inclusion and porosity cannot exceed a certain allowable value, and excessive defects must be completely removed and welded. Causes, hazards and prevention measures of welding defects of common stainless steel welded pipes.

     Here we first understand the problem of non-penetration in welding. Non-penetration refers to the phenomenon that the root of the welded joint is not completely penetrated when the stainless steel welded pipe is welded. Underpenetration will cause stress concentration and will easily cause cracks. Important welded joints are not allowed to have incomplete penetration.

     Explore the reasons for the lack of penetration. The Angle or gap of the groove is too small, the blunt edge is too large, and the assembly is poor; Welding process parameters are not selected properly, welding current and voltage are too small, and welding speed is too fast. Therefore, before welding, it is necessary to carefully check all aspects to see whether the setting parameters meet the requirements.

     The improvement measures are to correctly select and process the groove size, rationally assemble, ensure the gap, select the appropriate welding current and voltage and welding speed, and improve the operation technical level of equipment operators.

Related: stainless steel pipe production line, high-speed welded steel pipe production line

Guangdong Hangao Technology Co., LTD

TEL:+86 13534340243

E-MAIL：sales5@hangaotech.com

Wechat：CSbybyy   or   13534340243

WhatsApp：+86 13534340243

Facebook：Valor Chen

TikTok：hangaotech94