Effect of quenching process on hardened depth and mechanical properties of 42CrMo steel cutter hub

doi:10.13251/j.issn.0254-6051.2023.09.014

Abstract

Abstract: 42CrMo steel cutter cub was quenched by using a multi-purpose furnace at different quenching temperatures, different quenching media and carbon potentials. The influence of various factors on mechanical properties and depth of hardened layer of the cutter cub was studied through the inspection of mechanical properties, microstructure and hardness. The results show that with the increase of quenching medium cooling rate, the tensile strength of the cutter cub quenched at 850-890 ℃ shows a trend of overall increase. When the quenching temperature is 850 ℃, the tensile properties of the cutter cub is the best when the quenching medium D is used, and the depth of quenched layer reaches 6.0 mm. When the quenching temperature is 870 ℃, after using C medium, the depth of quenched layer meets the customer's requirements. When the carbon potential is 0.6%, with the increase of quenching temperature, the depth of the quenched layer first increases and then decreases, the tensile strength decreases, and the yield strength and elongation increase.

Key words: cutter cub, quenching temperature, quenching medium, carbon potential, hardened depth

CLC Number:

TG156.32

Jiang Ying, Du Shuiming, Huang Qiaomei, Shen Zida, You Fei. Effect of quenching process on hardened depth and mechanical properties of 42CrMo steel cutter hub[J]. Heat Treatment of Metals, 2023, 48(9): 88-91.

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