摘要
粉末注射成形技术是一种高效的近净成形技术,适用于生产小型的、具有复杂形状的零部件。本文综述了粉末注射成形技术的发展历程;概述了粉末注射成形原理,包括粉末和粘结剂的选择、混炼,注射成形及后续的脱脂、烧结;并介绍了粉末微注射成形技术的技术特点、注射工艺和微注射成形的应用;分析了粉末注射成形技术的局限性;展望了粉末注射成形技术的发展趋势,认为其材料体系将朝多方向发展,且应开发新的粘结剂和新的脱脂工艺以减少脱脂后在材料中的残留,开发少粘结剂、无粘结剂注射成形工艺;微粉末注射成形将朝成形数微米甚至纳米级的零部件的方向发展,防止粉末的氧化和保形是关键。
Powder injection molding is a high efficient and nearly net shape manufacturing technology,which is particularly suitable for parts of small size and complicated shape.Development of powder injection molding is first introduced in this paper.The formation principles involving selection and mixing of powder and binder,injection molding and subsequent degreasing and sintering are then summarized.The technical speciality,injection processing and application of micro powder injection molding are presented as well.Moreove,limitation and development direction of powder injection molding are also analyzed.It is considered that material systems for powder injection molding will develop in multidirections.New binder and new degreasing method should be exploited to reduce residual binder,and e even residual binder free.Micro powder injection molding will be proposed to form components of several microns or nanoscale in size,and the protection of fine powder from oxidation and precise shape maintenance should be the key of the whole trechnology.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2015年第1期139-144,共6页
Journal of Materials Science and Engineering
基金
江苏省自然科学基金资助项目(BK20141250)
江苏省高校自然科学研究面上资助项目(14KJB430005)
国家自然科学基金资助项目(51004050)
江苏高校优势学科建设工程资助项目
江苏省海洋资源开发研究院开放基金资助项目(JSIMR201222)
湖南省自然科学基金资助项目(12JJ3048)
湖南省自然科学基金青年基金资助项目(12JJ4041)
湖南省教育厅科学研究项目青年资助项目(13B140)
江苏省"六大人才高峰"第十批高层次人才选拔资助计划资助项目(HYZB-003)
关键词
注射成形
粉末
近净成形
脱脂
烧结
injection molding
powder
near net shape
degreasing
sintering
