ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2016, Vol. 37 ›› Issue (4): 49-51.

• 组织和性能 • 上一篇    下一篇

热处理对喷射成形GCrl5轴承钢组织和性能的影响

李荣, 程光辉, 郭江   

  1. 济源职业技术学院冶金化工系,济源459000
  • 收稿日期:2016-02-03 出版日期:2016-08-01 发布日期:2022-08-03
  • 作者简介:李荣(1980-),女,硕士(2005年内蒙古科技大学),副教授,2002年包头钢铁学院(本科)毕业,冶金材料制备和分析
  • 基金资助:
    河南省高等学校青年骨干教师资助计划项目(2015GGJS-277)

Effect of Heat Treatment on Structure and Properties of Spraying Formed Bearing Steel GCr15

Li Rong, Cheng Guanghui,Guo Jiang   

  1. Department of Metallurgical and Chemical Engineering, Jiyuan Vocational and Technical College, Jiyuan 459000
  • Received:2016-02-03 Published:2016-08-01 Online:2022-08-03

摘要: GCr15轴承钢母材在中频感应炉熔化后的钢液,经导流管进入雾化室的金属流被惰性气体弥散成微米级液滴,并沉积在收集器上,成直径130.28mm、中心厚度40.84mm的沉积坯(/%:1.01C,0.23Si,0.29Mn,1.48Cr,≤0.027P,≤0.020S)。取沉积坯的1/4在箱式电阻炉进行热处理试验。结果表明,喷射成形GCr15轴承钢的组织是细化的等轴晶和细小的碳化物组成的组织,具有低的合金元素的偏析;860℃淬火、160℃回火试样的硬度最高,HRC值为61,其组织和性能最佳。

关键词: 喷射成形, GCrl5轴承钢, 组织, 淬火回火, 硬度

Abstract: The liquid melted in a medium frequency induction furnace by parent metal of bearing steel GCrl5 through a guided tube enters in spraying room and the metal strand is sprayed by inert gas to liquid droplet with micrometer size and deposited at collector to form a deposited billet with diameter 130. 28mm and center thickness 40. 84 mm (/% : 1. 01C, 0. 23Si, 0. 29Mn, 1.48Cr,≤ O. 027P,≤0. 020S). The test of heat treatment of 1/4 deposited billet is carried out in a box electric resistance furnace. Results show that the structure of spraying formed bearing steel GCrl5 is refined structure of equiaxial crystal and fine carbide with low alloy elements segregation ; the hardness o£ sample quenched at 860 °C and tempered at 160 T is highest that is HRC 61 with optimum structure and properties.

Key words: Material Index Spraying Forming, Bearing Steel GCrl5, Structure, Quenching, Tempering, Hardness