刘向艳, 崔鸿, 李刚, et al. Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel[J]. Special Steel, 2019, 40(5): 57-59.
刘向艳, 崔鸿, 李刚, et al. Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel[J]. Special Steel, 2019, 40(5): 57-59.DOI:
In order to meet the user requirement to derease the hardness of 18Cr2Vi4WA steel Φ 60 mm product i. e. HBW hardness value ≤269
the tempering test at 630 〜750 °C for 5 h
furnace cooling to 500 °C
air cooling have been tested by bottom roller annealing furnace and by the help of metalloscope to analyze annealing shape of 18Cr2Ni4WA steel with different temperature. The result show that 18Cr2Ni4WA tempering hardness is connected with temperature
with the increase of annealing temperature
the hardness dacreases first and then increases. When tempering temperature is 670°C ,the HBW average hardness of steel products is the lowest( adout HBW238 ) and the structure is uniform spheroidized pearlite.