Transactions of Materials and Heat Treatment

Title：Optimization on initial and final forging temperature for new type bearing steel

Authors： Li Lei Ying Jilai

Unit： Zhengzhou Tourism College Henan Agricultural University

KeyWords： bearing steel forging temperature wear resistance property thermal fatigue property process optimization

ClassificationCode：TG146.2

year,vol(issue):pagenumber：2018,43(6):10-14

Abstract：

In order to improve the performance and service life of bearing steel containing Sr, a new type bearing steel containing Sr was forged under different initial and final forging temperatures, and the testing and analyses of wear resistance and thermal fatigue properties were carried out. The experimental results show that with the increasing of initial forging temperature from 1120 ℃ to 1240 ℃, the final forging temperature increases from 900 ℃ to 975 ℃, and the wear resistance property and thermal fatigue property of the new type bearing steel containing Sr show the tendency of strengthening first and then weakening. Therefore, the suitable increase of the forging temperature can improve the wear resistance property of bearing steel specimens, and the width and depth of the abrasion become shallow. Thus, the wear quantity devreases, and the initiation and propagation of the crack can be hindered. From the view point of improving the wear resistance and thermal fatigue properties of new type bearing steel containing Sr, the initial forging temperature of 1180 ℃ and the final forging temperature of 950 ℃ are the most preferred forging process.

Funds：

河南省高等教育教学改革研究项目（2014SJGLX467）

李磊（1978-），硕士，副教授；Email：3354088055@qq.com

Reference：

［1］宋永奇, 何杉, 李进, 等.轴承疲劳故障试验机的设计与测试
［J］. 徐州工程学院学报, 2015, 30(1):82-84.

Song Y Q, He S, Li J, et al. A bearing fatigue fault testing machine: design and test
［J］. Journal of Xuzhou Institute of Technology, 2015, 30(1):82-84.

［2］田超, 刘剑辉, 董瀚. 进口与国产轴承钢夹杂物特征的对比研究
［J］. 热加工工艺, 2017, 46(24):58-62.

Tian C, Liu J H, Dong H. Comparative study on inclusions characteristic of imported and domestic bearing steel
［J］. Hot Working Technology, 2017, 46(24):58-62.

［3］宋华华, 刘汇河, 李付伟, 等. 含氮不锈轴承钢的孪晶碳化物及其对性能的影响
［J］.轴承, 2014, (12):31-33.

Song H H, Liu H H, Li F W, et al. Twin carbide and its effect on mechanical properties of 40Cr15Mo2VN bearing steel
［J］. Bearing, 2014, (12):31-33.

［4］孙艳坤, 张威. 高温变形后冷却工艺对高碳铬轴承钢组织和性能的影响
［J］. 热加工工艺, 2017, 46(8):100-103.

Sun Y K, Zhang W. Effect of cooling process on microstructure and property of high-carbon chromium bearing steel after hot deformation
［J］. Hot Working Technology, 2017, 46(8):100-103.

［5］郎荣兴, 李贵全, 殷春云. 0Cr17Ni4Cu4Nb钢锻造裂纹分析与控制
［J］. 锻压技术, 2016, 41(9):18-22.

Lang R X, Li G Q, Yin C Y. Analysis and control on forging cracks of steel 0Cr17Ni4Cu4Nb
［J］. Forging & Stamping Technology, 2016, 41(9):18-22.

［6］何加群. 中国强国战略和轴承产业
［J］. 轴承, 2015, (1):55-63.

He J Q. China′s industrial power strategy and bearing industry
［J］. Bearing, 2015, (1):55-63.

［7］张伟, 夏高宇, 王强, 等. 转向轴承套圈温锻成形工艺的有限元模拟
［J］. 锻压技术, 2016, 41(12):14-25.

Zhang W, Xia G Y, Wang Q, et al. Finite element analysis on warm forging process for steering bearing rings
［J］. Forging & Stamping Technology, 2016, 41(12):14-25.

［8］梁若, 庞思勤, 程冠华, 等. 34CrNiMo6钢复合喷丸强化的有限元模拟
［J］. 航空制造技术, 2017, 60(10):99-103.

Liang R, Pang S Q, Cheng G H, et al. Finite element simulation of 34CrNiMo6 steel after dual shot peening
［J］. Aeronautical Manufacturing Technology, 2017, 60(10):99-103.

［9］GB/T 15824—2008，热作模具钢热疲劳试验方法
［S］.

GB/T 15824—2008, Thermal fatigue testing method for hot die steel
［S］.

Service：

【This site has not yet opened Download Service】【Add Favorite】