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Study on Quenching for 40Cr Steel

Shi Hai-fang

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Abstract

The effects of sub-temperature quenching and low tempering on the quenched 40Cr steel and annealed 40Cr steel were studied.The study shows that the best heat treatment process is 40Cr steel is pre-quenched at 920 ℃ and sub-temperature quenched at 790 ℃ and low tempered at 200 ℃.Compared with that of traditional quenching and low tempering treatment,the σb,δ,αk and hardness was increased 9%,16%,25% and 6% respectively,the wear mass loss quantity was decreased 67%.

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What this paper is about

The effects of sub-temperature quenching and low tempering on the quenched 40Cr steel and annealed 40Cr steel were studied.The study shows that the best heat treatment process is 40Cr steel is pre-quenched at 920 ℃ and sub-temperature quenched at 790 ℃ and low tempered at 200 ℃.Compared with that of traditional quenching and low tempering treatment,the σb,δ,αk and hardness was increased 9%,16%,25% and 6% respectively,the wear mass loss quantity was decreased 67%.

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Available abstract

The effects of sub-temperature quenching and low tempering on the quenched 40Cr steel and annealed 40Cr steel were studied.The study shows that the best heat treatment process is 40Cr steel is pre-quenched at 920 ℃ and sub-temperature quenched at 790 ℃ and low tempered at 200 ℃.Compared with that of traditional quenching and low tempering treatment,the σb,δ,αk and hardness was increased 9%,16%,25% and 6% respectively,the wear mass loss quantity was decreased 67%.

Key concepts: Tempering, Quenching (fluorescence), Metallurgy, Materials science, Physics, Quantum mechanics, Fluorescence

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