摘要:从等离子体热处理、热喷涂法、气相沉积、熔盐浸镀法等方面介绍了增强模具可靠性的表面强化技术及其优缺点。指出正确运用表面强化技术可以增强模具使用的可靠性,提高模具的使用寿命和陛能。 关键词:模具;表面强化;等离子体热处理;热喷涂;气相沉积:熔盐浸镀 中图分类号:TGl56.8:TGl74.44 文献标志码:A 文章编号:1004—227X(2009)03—0070—03 Surface enhancing techniques for improving the reliability of mold//HOU Yan-li*,SHI Lei,JI Curt—xin9, YE Yi-min9,ZHANG Zhe Abstract:The surface enhancing techniques for improving reliability of mold,such as thermal plasma treatment,hot spray process,vapor deposition and molten salt dipping plating were introduced,and their advantages and disadvantages were reviewed.It is pointed out that by correctly using surface enhancing technique,the reliability, service life and performance of the mold may be improved. Keywords:mold;surface enhancing;thermal plasma treatment;thermal spraying;vapor deposition;molten salt immersion plating First-author’S address:Technology Center,CNR Beijing February 7th Locomotive Works C0.,Ltd。,Beijing1 00072,China 1 前言 随着现代工业和尖端科学技术的发展,人们对模具的可靠性、寿命和性能的要求越来越高,因为它们直接决定与其相关产品的质量、成本及使用寿命。通常模具的工况比较恶劣,而磨损、疲劳裂纹、稳定性又会导致模具可靠性下降,甚至失效[1-2]。为了提高模具的可靠性、性能及寿命,工业上除了采用常规的热处理技术外,各种表面强化技术也日趋成熟并获广泛应用。表面强化技术是通过改变模具表面成分、组织及镀层来提高模具的硬度、耐磨性、耐热性、疲劳强度等机械性能,从而显著提高模具的可靠性[3~。等离子体热处理、喷涂法、气相沉积、熔盐浸镀法等均属模具表面强化技术范畴,其最大的优点是对环境无污染和节能,故己广泛应用于工业实践[7-9]。 注:本站部分资料需要安装PDF阅读器才能查看,如果你不能浏览文章全文,请检查你是否已安装PDF阅读器! |