Low temperature tempering meaning: refers to the tempering of the workpiece at 150~250 °C.The purpose of tempering: To eliminate the residual stress generated during quenching of the workpiece to prevent deformation and cracking; To adjust the hardness, strength, ductility and toughness of the workpiece to meet the performance requirements; To stabilize the structure and size, to ensure Accuracy; Improve and improve processing performance. Applications: cutting tools, measuring tools, molds, rolling bearings, carburizing and surface hardened parts.The tempering category of oil casing pipes:1.Oil Casing Pipe Tempering Process and Category.
The tempering Plane Turning Belt Conveyor Wholesale process of the casing pipe is a heat treatment process of reheating the quenched workpiece to a suitable temperature lower than the lower critical temperature, and cooling to room temper. After tempering, tempered martensite is obtained, which refers to the structure obtained when the quenched martensite is tempered at low temperature.. The tempering process of the casing pipe is a heat treatment process of reheating the quenched workpiece to a suitable temperature lower than the lower critical temperature, and cooling to room temperature in a medium such as air or water or oil after a certain period of time. Objective: To maintain the high hardness and wear resistance of the quenched workpiece and reduce the quench residual stress and brittleness.2. The meaning of medium temperature tempering: refers to the tempering of the workpiece between 350 ~ 500 °C
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