22MnB5硼钢裸板热成形中的高温摩擦

doi:10.16183/j.cnki.jsjtu.2019.09.017

上海交通大学学报 ›› 2019, Vol. 53 ›› Issue (9): 1136-1142.doi: 10.16183/j.cnki.jsjtu.2019.09.017

• 学报（中文） • 上一篇

22MnB5硼钢裸板热成形中的高温摩擦

高凯翔1,王武荣1,2,韦习成1,孟华3

1. 上海大学材料科学与工程学院，上海 200444； 2. 上海大学省部共建高品质特殊钢冶金与制备国家重点实验室，上海 200444； 3. 香港城市大学机械工程系，香港 999077

发布日期:2019-10-11
通讯作者: 王武荣，男，教授，博士生导师，电话(Tel.)：13918416278；E-mail: wrwang@shu.edu.cn.
作者简介:高凯翔(1991-)，男，河南省郑州市人，硕士生，主要研究方向为板材热冲压成形.
基金资助:
国家自然科学基金(51475280),上海汽车工业科技发展基金(1610)资助项目

High-Temperature Friction of Uncoated 22MnB5 Boron Steel in Hot Stamping

GAO Kaixiang 1,WANG Wurong 1,2,WEI Xicheng 1,MENG Hua 3

1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China； 2. State Key Laboratory of Advanced Special Steel, Shanghai University, Shanghai 200444, China； 3. Department of Mechanical Engineering, City University of Hong Kong, Hong Kong 999077, China

Published:2019-10-11

摘要/Abstract

摘要： 采用自制高温摩擦试验机模拟实际热冲压工艺条件下22MnB5裸板的高温摩擦过程，分析初始摩擦温度、滑动速度和法向载荷对其摩擦行为的影响.结果表明：转移过程中试样表面形成氧化层，摩擦时氧化层起到保护和润滑作用，初始摩擦温度对裸板摩擦系数的影响不大；在较低的摩擦速度下，试样表面的氧化物形成厚度不均匀的小堆积块，试样表面凹凸不平并且无法良好支撑摩擦界面，摩擦系数增大；法向载荷较大时，试样表面氧化物被大量剥落，金属基体暴露，摩擦系数增大.

关键词: 热冲压； 22MnB5裸板；额外冷却；氧化物

Abstract: The self-developed high-temperature friction tester was used to simulate the high-temperature friction process of uncoated 22MnB5 steel under actual hot stamping process. The influence of initial friction temperature, sliding speed and normal load on the friction behavior were analyzed. The results indicated that since the oxide layers formed on the surface of the specimen during transfer process had the same protective and lubricating effect on friction, the initial friction temperature had little effect on the friction coefficient. When the sliding speed was low, the oxides on the specimen surface would form small accumulation blocks with non-uniform thickness, which made the specimen surface uneven. And the oxides could not support the friction interface well, resulted in high coefficient of friction. As the normal load increased, the friction coefficient increased due to the spalling of the oxide layers and the exposure of the metal substrate.

Key words: hot stamping; uncoated 22MnB5 steel; extra cooling; oxides

中图分类号:

TG 115

高凯翔,王武荣,韦习成,孟华. 22MnB5硼钢裸板热成形中的高温摩擦[J]. 上海交通大学学报, 2019, 53(9): 1136-1142.

GAO Kaixiang,WANG Wurong,WEI Xicheng,MENG Hua. High-Temperature Friction of Uncoated 22MnB5 Boron Steel in Hot Stamping[J]. Journal of Shanghai Jiaotong University, 2019, 53(9): 1136-1142.

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22MnB5硼钢裸板热成形中的高温摩擦

High-Temperature Friction of Uncoated 22MnB5 Boron Steel in Hot Stamping

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