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消失模铸造底注包浇注的多级缓冲浇注系统在大型铸钢件的应用
Application of Multi-step Gate and Runner System for Pouring Heavy Steel Castings by Bottom Pouring Ladle in Lost Foam Casting
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- DOI:
- 作者:
- 刘立中
LIU Lizhong
- 作者单位:
- 杭州规矩铸造设备有限公司
Hangzhou Guiju Casting Machinery Co.,Ltd.,Hangzhou 311400,China
- 关键词:
- 消失模铸造 大型铸钢件 底漏浇包 多级缓冲浇道
EPC process large steel castings bottom pouring ladle multistage buffer runner
- 摘要:
- 消失模铸造工艺用于大型铸钢件的案例不多,除顾忌泡沫模型产生碳缺陷,底漏浇包钢液流冲击力大会破坏涂层,导致型腔进砂或发生垮箱也是主要原因。因此,消失模铸造做较大铸钢件时通常使用陶瓷管浇道,陶瓷管浇道不仅成本高,埋箱操作也繁琐。泡沫模多级缓冲浇道替代陶瓷管浇道,可以简化浇注系统,方便工人操作,生产应用取得了良好的效果。
There are few cases in which the EPC process was applied to large steel castings. In addition to the carbon defects caused by foam model, the flow impact force of molten steel in the bottom pouring casting package would destroy the coating, which leaded to the cavity entering sand or the failure of the box was also the main reason. Therefore, the ceramic pipe runner is usually used in EPC for larger steel castings. Ceramic pipe runner is not only expensive, but also tedious to bury. The multistage buffer runner of foam mold can replace the ceramic pipe runner, which can simplify the casting system and make it convenient for workers to operate. Good production and application results have been obtained.