Liaoning Panjin Tiangong Precision Casting Co.,Ltd. is a professional manufacturer integrating precision casting,heat treatment,machining,design and R&D.It is located in Panjin, a city of province Liaoning,with geographical advantage,well developed traffic and the biggest wetland in China,a beautiful nature reserve.The company founded in 2007, has a history of more than 10 years.The Foundry has 13,000 m2, 105 employees, and a monthly capacity of 150 tons of castings.Casting processes of Investment and Shell-Molding are mostly applied to our products in an extensive array of alloys including carton/stainless steel,heat/wear - resistant steel,dual phase steel,hastelloy,copper/aluminum and other specialized alloys.
We sincerely welcome new and old customers at home and abroad to our company to negotiate business, exchange technology and develop new products. We don't forget our old friends and are willing to make new ones.
Overheating Overheating of the microstructure after quenching can be observed from the rough mouth of the bearing parts. But to accurately judge the degree of its overheating must observe the microstructure. If coarse acicular martensite appears in the quenched structure of GCr15 steel, it is a quenched superheated structure. The reason for the formation may be the overall overheating caused by the quenching heating temperature is too high or the heating and holding time is too long; it may also be due to serious banded carbides in the original structure, forming local martensitic needle-like thick in the low-carbon area between the two bands, localized overheating. The retained austenite in the superheated structure increases and the dimensional stability decreases. Due to the overheating of the quenched structure and the coarse crystals of the steel, the toughness of the parts will be reduced, the impact resistance will be reduced, and the life of the bearing will also be reduced.MORE
Liaoning Panjin Tiangong Precision Casting Co.,Ltd.
Add：Wang Jia Tai Shan Zhong Lu, Dawa District, Panjin City, Liaoning Province, China
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