Casting is the process of melting the metal into a required liquid and pouring it into the mold. After cooling, solidifying and cleaning, a casting (part or blank) with a predetermined shape, size and properties can be obtained It is the basic technology of modern machinery manufacturing industry. The cost of casting blank is low, […]
Quenching, a heat treatment process for metals and glass. Alloy products or glass heated to a certain temperature, and then in water, oil or air rapid cooling, generally used to improve the hardness and strength of the alloy. Commonly known as “dip fire. “. Heat treatment of metal cooled in air or water or oil […]
Quenching is the process of heat treatment to obtain the martensite structure by heating the metal or parts above the phase change temperature and then rapidly cooling them beyond the critical cooling rate. Quenching is to obtain the martensite structure, and after tempering, the workpiece to obtain good performance, in order to give full play […]
The microstructure obtained by high-temperature tempering is tempered sorbite. The main purpose of tempering is to eliminate quenching stress and get the required structure. According to the different tempering temperature, tempering can be divided into a low temperature, medium temperature, and high temperature. Tempered Martensite, troostite, and sorbite were obtained.
3.The graded austenitizing isothermal quenching process 3.1 Effect of grade austenitizing austempering on mechanical properties of Grinding Ball After the ball was austenitized at 980 °C for 150 min + 920 °C for 30 Min, and then put into a salt bath furnace at 260 °C for 30 min and 50 Min, the hardness and […]