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Defects of quenching & tempering and Prevention
/in Heat Treatment Process /by Sara WuIn the heat treatment process, the reject rate caused by the quenching process is usually higher. This is mainly in the quenching process, and at the same time, the formation of greater thermal stress and structural stress, in addition, it is easy to be exposed in the quenching and tempering process because of the inherent […]
Function and design of Riser for foundry
/in Castings /by Sara Wu1. Take a pinch. 2. Exhaust. 3.Slag collection. 4.Logo for the metal filling cavity. Casting riser is a part designed to supply the shrinkage of casting during solidification to prevent shrinkage cavity and shrinkage porosity.
Characteristics and application of high chrome wear resistant cast iron
/in Castings /by Sara WuHigh Chrome cast iron containing 12.30% chrome and 2.4-3.6% carbon can be highly alloyed and heat treated to obtain martensite or austenite or mixed matrix and special carbides of chrome. This particular carbide is a hexagonal system of Me7C3 with hardness as high as HVL200. 1600, much higher than the cementite type of carbides and common mineral […]
Importance to treat the gray iron melted by electric induction furnace
/in Castings /by Sara WuThis company is a large state-owned enterprise, the production of many varieties of gray iron castings, the previous use of Cupola melting equipment, the production of gray iron castings have been very stable quality. In order to further implement the national requirements for Energy Conservation and emission reduction, optimize the environment, and achieve high efficiency […]
Points for MELTING SCRAP FOR DUCTILE IRON
/in Castings /by Sara WuIn the traditional production process of ductile iron, about 10% carbon scrap is generally used for the burden. This paper only deals with some problems that should be paid attention to in the process of producing nodular cast iron in an induction furnace after increasing the proportion of carbon scrap used. According to the production […]