金属塑性成型过程中摩擦声发射信号特征

基金项目:

国家自然科学基金资助项目(50565002)

详细信息

The Friction Acoustic Emission Signal Characteristics During the Plastic Forming Process of Metal

摘要: 在金属塑性成型的过程中, 在较大的正压力作用下, 变形金属与模具之间存在着摩擦力, 导致除了浪费能源以外, 还会使金属坯料的变形不均匀。采用声发射技术, 检测了模拟金属滑块和滑板在三种匀速运动及三种正压力的情况下, 产生的塑性变形摩擦声发射信号的变化。试验结果表明, 在特定条件下, 随着正压力的增加, 声发射信号的计数和幅度减少。
- 声发射检测 /
- 摩擦 /
- 压力 /
- 特征参数
Abstract: In the plastic forming process of metal, at the great pressure, the friction was produced between the deformation metal and the mold, which could made energy waste, and also so the non-uniform deformation of the metal blank. Using acoustic emission testing technique, the plastic deformation acoustic emission signals of friction were detected during the simulated metal slider and skateboards on three uniform speed and three contact pressure. Testing results showed that under certain conditions, as the pressure was increased, the counts and amplitude of acoustic emission signals would reduce.
- Acoustic emission testing /
- Friction /
- Stress /
- Characteristic parameters

[1]	温诗铸, 黄平.摩擦学原理[M].北京: 清华大学出版社, 2002: 265-269.
[2]	俞汉清, 陈金德.金属塑性成型原理[M].北京: 机械工业出版社, 1999: 10-15.
[3]	雷玉成, 汪建敏, 贾志宏.金属材料成型原理[M].北京: 化学工业出版社, 2006: 128-133.
[4]	崔忠圻.金属学与热处理[M].北京: 机械工业出版社, 1999: 167.
[5]	秦国栋, 刘志明, 王文静.16 Mn钢疲劳过程中的声发射特性研究[J].中国安全科学学报, 2005, 15(8): 105-108.
[6]	张守茁, 朱宝泉.无润滑条件下金属板材凸模胀形声发射检测[J].锻压技术, 2001, (3): 41-43.
[7]	张守茁, 席镇, 杨殿魁.基于声发射技术的金属动态塑性摩擦研究[J].润滑与密封, 2006, (11): 53-59.
[8]	张守茁, 席镇, 贾园.摩擦过程中相对运动速度对声发射能量信号的影响[J].润滑与密封, 2008, (5): 10-14.
[9]	Patrik Dobrǒn , Jan Bohlen , Frantǐsek Chmelík . Acoustic emission during stress relaxation of pure magnesium and AZ magnesium alloys[J]. Materials Science and Engineering, 2007, (A 462): 307-310.
[10]	Hellmig R J, Lamark T T, Popov M V. Influence of equal-channel angular pressing on the acoustic emission behaviour of magnesium alloy AZ31 under compression[J]. Materials Science and Engineering, 2007, (A 462): 111-115.