摘要
介绍了汽车变速箱壳体的消失模铸造工艺。为消除铸件缺陷,提出如下措施:(1)使用竹片加固模样,解决模样变形缺陷;(2)在挂涂烘干后的模样内铺上一层树脂砂改善粘砂缺陷。生产结果表明:变速箱壳体抗拉强度>200MPa、(A+B)型石墨体积分数≥70%、珠光体体积分数≥95%,组织与力学性能均能满足要求。
The lost form casting method of the automobile gearbox housing was introduced.In order to eliminate casting defects following measures were proposed：（a）using bamboo piece to reinforce the lost form pattern and prevent its deformation;（b）using resin sand-forming layer to cover the surface of the lost form pattern for the purpose to prevent burn-on.The production result showed that the tensile strength of the gearbox housing 200 MPa,A＋B type graphite ≥70%,pearlite ≥95%,completely meeting the requirements.
出处
《现代铸铁》
CAS
2010年第6期53-56,共4页
Modern Cast Iron
关键词
消失模铸造工艺
变速箱壳体
缺陷
措施
lost form pattern casting method
gearbox housing
defect
measures
