金属热处理 ›› 2020, Vol. 45 ›› Issue (4): 156-160.DOI: 10.13251/j.issn.0254-6051.2020.04.033

• 工艺研究 • 上一篇    下一篇

真空气淬压力对马氏体不锈钢硬度的影响

任伟, 唐丽娜, 吕超君, 王健波, 吴国华, 张天德   

  1. 上海航天设备制造总厂有限公司, 上海 200245
  • 收稿日期:2019-09-19 出版日期:2020-04-25 发布日期:2020-05-08
  • 通讯作者: 唐丽娜,高级工程师,博士,E-mail:linatang149@163.com
  • 作者简介:任 伟(1985—),男,高级工程师,硕士,主要从事热处理工艺研究,E-mail:ren_wei200@126.com
  • 基金资助:
    中国航天科技集团有限公司共性工艺研究项目(GXGY-2019-09)

Effect of vacuum gas quenching pressure on hardness of martensitic stainless steels

Ren Wei, Tang Lina, Lü Chaojun, Wang Jianbo, Wu Guohua, Zhang Tiande   

  1. Shanghai Aerospace Equipments Manufacturer Co., Ltd., Shanghai 200245, China
  • Received:2019-09-19 Online:2020-04-25 Published:2020-05-08

摘要: 研究真空气淬压力对4种马氏体不锈钢(2Cr13、9Cr18、1Cr17Ni2和0Cr17Ni4Cu4Nb)硬度的影响。结果表明,在1.5、3、5 bar气淬压力下,直径φ30、φ50、φ80 mm的2Cr13钢棒材心部硬度大于45 HRC,表面硬度大于49.5 HRC。提高气淬压力,材料硬度增大。对于直径φ30 mm的2Cr13钢棒材,心部硬度与表面硬度一致;对于直径φ50和φ80 mm的棒材,心部硬度低于表面硬度。直径为φ30、φ50、φ80 mm的9Cr18、1Cr17Ni2、0Cr17Ni4Cu4Nb钢棒材,在1.5、3、5 bar 气淬压力下均淬透,材料心部硬度与表面硬度一致。

关键词: 真空气淬, 马氏体不锈钢, 硬度

Abstract: Effect of vacuum gas quenching pressure on hardness of four martensitic stainless steels (2Cr13,9Cr18,1Cr17Ni2 and 0Cr17Ni4Cu4Nb) was studied. The results show that the core hardness of the 2Cr13 steel bars with diameter of 30,50 and 80 mm under the gas quenching pressure of 1.5, 3 and 5 bar is greater than 45 HRC, respectively, and the surface hardness for the three steels is greater than 49.5 HRC. When gas quenching pressure is increased, the hardness of 2Cr13 steel increases. The core hardness of the 2Cr13 steel bars with diameter of 30 mm is the same as the surface hardness. The core hardness of the 2Cr13 steel bars with diameter of 50 and 80 mm is lower than the surface hardness. The steel bars of 9Cr18, 1Cr17Ni2, 0Cr17Ni4Cu4Nb with diameters of 30,50 and 80 mm are all hardened under the gas quenching pressure of 1.5, 3 and 5 bar, and the core hardness is the same as the surface hardness.

Key words: vacuum gas quenching, martensitic stainless steel, hardness

中图分类号: