凹模下压式挤压铸造工艺及模具设计  

Squeeze Casting Process of Downward-pressure Die and Mould Design

作　　者：丁韧[1] 吕野楠[1] 王家宣[2] 

机构地区：[1]辽宁省交通高等专科学校机电系,辽宁沈阳110122 [2]南昌航空大学航空制造工程学院,江西南昌330063

出　　处：《铸造技术》2016年第2期386-388,共3页Foundry Technology

摘　　要：根据铝合金连接座零件壁厚不均匀的结构特点,采用挤压铸造成形工艺,设计出凹模下压式挤压铸造模具,利用凹模的下压动作使液态金属在足够的比压下塑性流动、补缩和结晶凝固,余料存于凹模底部不影响铸件尺寸精度要求,解决了成形过程中出现的浇不足、冷隔、裂纹缺陷,生产实践表明,凹模下压式挤压铸造模具能够满足企业要求。According to the serious uneven structure features of a connecting seat part in the thickness of part wall, the squeeze casting process was selected, and a downward-pressure-cavity die was designed, which uses the action of downward-pressure to make liquid metal flow, feed and solidify under enough pressure. Finally the remaining metal deposits at the bottom of the cavity, and the defect of insufficient and cold shut, crack and fissure was solved.

关 键 词：挤压铸造 壁厚不均 模具设计 铝合金 

分 类 号：TG249.2[金属学及工艺—铸造] TG241