Blog
We look forward to working with you,mutual benefit and win-win,create brilliant!
Let's help you
MoreLatest News
What should be paid attention to when the welded pipe unit produces oil casing?
Release time:
2018-12-06 11:43
The welded pipe unit produces oil casing, because the weld toughness is affected by the toughness of the base metal, the chemical composition of the base metal and the welding process. The weld toughness can also be improved significantly by controlling the width of the bright line, the angle of the flow line and the content of non-metallic inclusions in the welding process;
The welded pipe unit produces oil casing, because the weld toughness is affected by the toughness of the base metal, the chemical composition of the base metal and the welding process. The weld toughness can also be improved significantly by controlling the width of the bright line, the angle of the flow line and the content of non-metallic inclusions in the welding process;
In addition, the controlled cooling of the welded pipe after thermal tension reduction can improve the strength and toughness of the weld of the welded oil casing and other areas of the pipe body. Gray spot is a plane defect at the weld fusion line, and the fracture is generally gray flat spot, usually round, oval or long strip. The gray spot has a great influence on the chemical composition, microstructure and stress distribution of the weld zone, and seriously affects the mechanical properties of the oil casing.
The main factors of weld ash are the chemical composition of the welding base metal, welding temperature, welding speed, extrusion amount, opening angle, and the edge shape and surface quality of the strip before welding. Strict control of strip steel edge quality and welding process is the main way to solve the weld gray spot, through the weld heat treatment and thermal tension reduction before the whole pipe body heating can reduce the welding oil casing weld gray spot trend.
Latest News
Contact Us
Tel :+86-514-87736047
Phone :+86-15062802588
E-mail : market@nanyangmill.com
Address : Yangshou industry park,Hanjiang District, Yangzhou City, Jiangsu Province, China
Business License
This website already supports IPV4 / IPV6 bidirectional access