基于扩大铸造利润空间的目的，探讨大比例废钢冲天炉的熔化特点、操作及其结构问题，供有关铸造工作者参考。

To enlarge the profit of casting, the paper explores the melting character, operation and structure of the cannon stove for big scale waste steel to give information to someone doing casting work.

youdao

多年来，铸造科技工作者对缩孔和缩松进行了大量研究工作并取得重要成果。

Foundrymen have maken a lot of research works to shrinkage and dispersed shrinkage, and gained important success during the past few years.

youdao

多年来，铸造科技工作者对缩孔和缩松进行了大量研究工作并取得重要成果。

Foundrymen have maken a lot of research works to shrinkage and dispersed shrinkage, and gained important success during the past few years.

youdao