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Henary Lee
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Premium Author Henary Lee

Changsha, Hunan, China

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ARTICLES BY HENARY LEE


In most cases, optimized welding process, power loss can be reduced 50% and can improve the welding quality, reduce downtime, increase production.
Trench etching is generally believed that acute heat in the welding process, the results of local tissue metal and chemical change caused by quenching.
Factors that affect the raw material for the steel pipe welding quality affect the quality of raw materials are mainly steel mechanical properties unstable surface defects and strip geometry deviation...
Accidents often occur weld quality in our daily production, weld quality accident we do the analysis of the following aspects.
AC electromagnetic coil eddy current testing to the metal surface of the member induced eddy current non-destructive flaw detection technology. It is suitable conductive material, including defects in...
Spiral fracture propagation direction depending on whether the spiral pipe for CVN value anisotropic size.
Anti-corrosion coating method of spiral steel pipe of is generally used in anti-corrosion coating.
Spiral steel pipe typically occurs wall thickness errors, in order to avoid these problems and to obtain more accurate pipe, always pay attention in production process.
Austempering is to reduce the deformation of seamless steel tube and began to crack one of the effective method of quenching, but how to correctly use the process method is based on seamless steel tub...
By some recent large steel mills have raised, cold drawn seamless steel prices and raw material prices, driven by the support, the majority of the research object represents the next two weeks the mar...
Early 1980s, 3PE anti-corrosion steel is widely used in Europe first, praised by users, it is the most used line coating system.
To eliminate error ellipse size and other defects of seamless steel tubes produced by rolling and heat treatment, generally using the sizing process. As the final production of seamless steel pipe man...
The pressure processing and heat treatment operations combine to make the forming process to obtain a final performance with a unified kind of process methods.
Heat treatment of oil casing use continuous automatic production, product performance testing by sampling of ways after the heat treatment, can not be 100% product performance validation, strict contr...
Seamless heat treatment after welding is a new technology to eliminate residual stress, this technology can improve the metal's resistance to stress corrosion, and heat treatment temperature is higher...








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