锻压技术

预处理温度对模具钢组织和性能的影响

英文标题：Influence of pretreatment temperature on the microstructure and property of die steel

作者：郑有想

单位：长江工程职业技术学院

分类号：TG156.3

出版年,卷(期):页码：2014,39(12):112-115

摘要：

研究了不同预处理工艺对新型模具钢的影响，分析了预处理温度对模具钢组织、硬度和冲击韧性的影响。结果表明，当对模具钢进行一次预处理时，模具钢组织中存在大量偏析；进行二次预处理后模具钢的组织偏析现象得到改善，分布更加均匀。进行二次预处理时，随着退火处理温度的提高，试样硬度显著下降；随着固溶温度的升高，模具钢硬度先增大后降低。模具钢冲击韧性随二次预处理温度增加呈上升趋势，当采用二次预处理工艺为1080 ℃+850 ℃时，试样冲击韧性达到最大值216.3 J·cm-2。

The influence of different pretreatment processes on new die steel was studied and the effects of pretreatment temperature on the structure, hardness and impact toughness were analyzed. The results show that when the first pretreatment is applied, there is a lot of segregation at the grain boundary of die steel organization, and the segregation is improved by the second pretreatment. When the second pretreatment is applied, the hardness decreases obviously with the rise of annealing temperature, and the hardness increases at first and then decreases with the rise of solution temperature. The impact toughness of die steel increases with the rise of the second pretreatment temperature. When the pretreatment temperature is 1080 ℃ +850 ℃, the impact toughness reaches the maximum value of 216.3 J·cm-2.

基金项目：

湖北省高校学生工作研究会课题（1213D06）

郑有想（1972-），男，本科，副教授

参考文献：

[1]吴晓春，左鹏鹏．国内外热作模具钢发展现状与趋势[J]．模具工业, 2013, 39(10): 1-9.

Wu X C, Zuo P P. Development status and trend of hot working die steels at home and abroad[J]. Die & Mould Industry, 2013, 39(10): 1-9.

[2] 江浩,吴晓春,石楠楠. 氮对奥氏体型热作模具钢组织和性能的影响[J]. 机械工程材料， 2012, 36(1): 58-61.

Jiang H, Wu X C, Shi N N. Effects of nitrogen on microstructure and properties of austenitic hot die steel[J]. Materials for Mechanical Engineering,2012, 36(1): 58-61.

[3]王良平,吴晓春,闵娜,等. 新型奥氏体热作模具钢的显微组织及性能[J]. 机械工程材料,2009,33(12): 43-45.

Wang L P, Wu X C, Ming N, et al. Microstructure and properties of a new austenitic hot die steel[J]. Materials for Mechanical Engineering,2009,33(13): 43-45.

[4]谭海林. 新型热作模具钢的热处理工艺研究[J]. 锻造技术, 2013, 34 (11): 1488-1490.

Tan H L. Research on heat treatment process for new hot forging die steel[J]. Foundry Technology,2013, 34 (11): 1488-1490.

[5]何柏林, 缪燕平. 3Cr2W8V钢热作模具的失效形式及分析[J]. 热加工工艺, 2007, 36(21): 74-76.

He B L, Liao Y P. Invalid pattern and failure analysis of hot die of 3Cr2W8V[J]. Hot Working Technology, 2007, 36(21): 74-76.

[6]赵柏森. 热作模具钢特性及焊接修复应用现状[J]. 热加工工艺, 2013, 42 (17): 9-12.

Zhao B S. Application status of welding repair of hot-working die steel and its properties[J]. Hot Working Technology, 2013, 42 (17): 9-12.

[7]刘昌云, 蔡云. 热作模具钢的选用及展望[J]. 铸造技术, 2013, 34 (2): 161-163.

Liu C Y, Cai Y. Development and selection of hot working die steel
［J］. Foundry Technology, 2013, 34 (2): 161-163.

[8]孙骉. 模具钢的热处理与表面处理技术[J]. 金属加工, 2014,(5): 45.

Sun M. The hot treatment and surface treatment on die steel[J]. Machinist Metal Cutting, 2014,(5): 45.

[9]陈英伟, 吴晓春. 几种典型热作模具钢性能的对比[J]. 机械工程材料, 2010, 34 (2): 27-34.

Chen Y W, Wu X C. Comparison of properties for several typical hot dic steels [J]. Materials for Mechanical Engineering, 2010, 34 (2): 27-34.

服务与反馈：

【文章下载】【加入收藏】