加热和冷却条件对合金工具钢S2表面氧化与脱碳的影响

doi:10.13251/j.issn.0254-6051.2023.08.020

金属热处理 ›› 2023, Vol. 48 ›› Issue (8): 124-131.DOI: 10.13251/j.issn.0254-6051.2023.08.020

加热和冷却条件对合金工具钢S2表面氧化与脱碳的影响

屠兴圹, 左锦中, 赵赟, 苏振伟

中天钢铁集团有限公司技术中心, 江苏常州 213011

收稿日期:2023-03-06 修回日期:2023-06-30 出版日期:2023-08-25 发布日期:2023-10-10
作者简介:屠兴圹(1987—),男,工程师,主要研究方向为工具钢、冷镦钢、易切削钢等材料的开发,E-mail:1129966174@qq.com

Effects of heating and cooling conditions on surface oxidation and decarbonization of alloy tool steel S2

Tu Xingkuang, Zuo Jinzhong, Zhao Yun, Su Zhenwei

Technology Center, Zenith Steel Group Co., Ltd., Changzhou Jiangsu 213011, China

Received:2023-03-06 Revised:2023-06-30 Online:2023-08-25 Published:2023-10-10

摘要/Abstract

摘要： 采用金相法、显微硬度、质量损失率等测量方法研究了加热温度、加热时间及冷却方式对合金工具钢S2表面氧化和脱碳的影响。结果表明,随着加热温度的升高、加热时间的增加,氧化质量损失率呈上升趋势。在相同的加热时间下,随着加热温度的升高,全脱碳层深度先增加后逐渐减少,全脱碳层在800 ℃时达到最大;总脱碳层深度在1050 ℃以下时随着加热温度的升高缓慢增加,加热温度高于1050 ℃时,总脱碳层深度增加明显,在1200 ℃时总脱碳层几乎消失,该温度下氧化烧损严重。相同的加热条件下,冷却速率越小,脱碳越严重。

关键词: 合金工具钢S2, 加热温度, 冷却方式, 氧化, 脱碳

Abstract: Effects of heating temperature, holding time and cooling method on surface oxidation and decarbonization of the alloy tool steel S2 were investigated by means of metallographic method, microhardness and mass loss tests. The results show that the oxidation mass loss rate increases with the increase of heating temperature and holding time. Under the same holding time, with the increase of heating temperature, the depth of complete decarbonization layer first increases and then gradually decreases, and reaches the maximum at 800 ℃. When the heating temperature is below 1050 ℃, the depth of complete decarbonization layer increases slowly with the increase of heating temperature. When the heating temperature is above 1050 ℃, the depth of complete decarbonization layer increases obviously. The complete decarbonization layer almost disappears when heated at 1200 ℃, and the burning damage is serious at this temperature. Under the same heating condition, the smaller the cooling rate, the more serious the decarbonization.

Key words: alloy tool steel S2, heating temperature, cooling method, oxidation, decarburization

中图分类号:

TG156.1

屠兴圹, 左锦中, 赵赟, 苏振伟. 加热和冷却条件对合金工具钢S2表面氧化与脱碳的影响[J]. 金属热处理, 2023, 48(8): 124-131.

Tu Xingkuang, Zuo Jinzhong, Zhao Yun, Su Zhenwei. Effects of heating and cooling conditions on surface oxidation and decarbonization of alloy tool steel S2[J]. Heat Treatment of Metals, 2023, 48(8): 124-131.

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加热和冷却条件对合金工具钢S2表面氧化与脱碳的影响

Effects of heating and cooling conditions on surface oxidation and decarbonization of alloy tool steel S2

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