Quenching crack analysis and heat treatment process optimization of 2Cr13 steel special-shaped die forging parts

doi:10.13251/j.issn.0254-6051.2022.11.007

Heat Treatment of Metals ›› 2022, Vol. 47 ›› Issue (11): 45-53.DOI: 10.13251/j.issn.0254-6051.2022.11.007

• PROCESS RESEARCH • Previous Articles Next Articles

Quenching crack analysis and heat treatment process optimization of 2Cr13 steel special-shaped die forging parts

Wang Gaoyuan, Wang Kai, Zhang Zhimei

Xi'an Aerospace Engine Co., Ltd., Xi'an Shaanxi 710100, China

Received:2022-06-07 Revised:2022-09-17 Online:2022-11-25 Published:2023-01-04

Abstract

Abstract: In order to solve the batch surface cracking problem of a 2Cr13 steel special-shaped die forging part after quenching and tempering by analyzing the reasons of cracking from reviewing production process, simulating surface stress change during quenching process and observing the microstructure of the parts and the crack morphology. Meanwhile the influence of quenching method on surface structure and mechanical properties of workpiece was verified by heat treatment tests. The results show that the cracking of 2Cr13 steel special-shaped die forging parts after quenching is related to the shape of the forging part, quenching heating method and quenching temperature. The risk of quenching cracking can be reduced by increasing the excess allowance of forging parts, or applying hot charging and lower quenching heating temperature. Quenching at 1000 ℃ via hot charging is adopted as the optimized heat treatment method of products.

Key words: 2Cr13 steel die forging part, surface crack, stress distribution, surface microstructure, heat treatment method

CLC Number:

TG156.1

Wang Gaoyuan, Wang Kai, Zhang Zhimei. Quenching crack analysis and heat treatment process optimization of 2Cr13 steel special-shaped die forging parts[J]. Heat Treatment of Metals, 2022, 47(11): 45-53.

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Quenching crack analysis and heat treatment process optimization of 2Cr13 steel special-shaped die forging parts

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