铝合金反重力铸造成型热芯盒浇注系统的研究
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摘要
铝合金反重力铸造浇注系统大部分开设在树脂砂芯内,往往内浇道开设不当就会导致产生热节,出现局部缩松缺陷,且内浇道由于刷涂料困难,导致内浇道粘砂严重,研究了一种更为合理的浇注系统,来满足反重力铸造工艺生产方式的要求。成型热芯盒浇注系统采用覆膜砂生产,内浇道与铸件连接处做成收口型设计的拼接式组装结构。成型热芯盒浇注系统能够有效防止铸件产生缩孔、缩松等铸造缺陷并减少浇注系统粘砂等问题,铸件组织致密,铸件合格率大幅度提高,回炉料的品位明显提高。
Most of the pouring system of aluminum alloy anti-gravity casting process is built in the resin sand core. If the inner runner is improperly opened, it will cause hot joints and local shrinkage defects while severe sand sticking issue happens to the inner runner since it is difficult to paint inside the inner runner. A more reasonable pouring system has been studied to meet the requirements of the production method of anti-gravity casting process. The pouring system of hot core box casting process is made of coated sand, while the joint between the gate and the castings is made into a spliced assembly structure with a closed shape design. The pouring system of hot core box casting process can effectively prevent casting defects such as shrinkage holes and shrinkage porosity, and reduce the sand sticking problem in the casting system. The casting structure is dense while the casting qualification rate and the grade of the recycled material have been greatly improved.
Most of the pouring system of aluminum alloy anti-gravity casting process is built in the resin sand core. If the inner runner is improperly opened, it will cause hot joints and local shrinkage defects while severe sand sticking issue happens to the inner runner since it is difficult to paint inside the inner runner. A more reasonable pouring system has been studied to meet the requirements of the production method of anti-gravity casting process. The pouring system of hot core box casting process is made of coated sand, while the joint between the gate and the castings is made into a spliced assembly structure with a closed shape design. The pouring system of hot core box casting process can effectively prevent casting defects such as shrinkage holes and shrinkage porosity, and reduce the sand sticking problem in the casting system. The casting structure is dense while the casting qualification rate and the grade of the recycled material have been greatly improved.
引文
[1]程俊明,陆启为,李赫,等.高压电气铝合金罐体金属型低压铸造的工艺研究[J].中国铸造装备与技术, 2013(5):55-57.
[2]李明明.铸造凝固过程计算机数值模拟技术研究[D].武汉:武汉理工大学,2011.
[3]陈昌平,等.材料成型原理[M].北京:机械工业出版社,2001.
[2]李明明.铸造凝固过程计算机数值模拟技术研究[D].武汉:武汉理工大学,2011.
[3]陈昌平,等.材料成型原理[M].北京:机械工业出版社,2001.