| Original document(13 pages) Authorized document(10 pages) 中文版 |
This invention nodular cast iron balls may be instead of the steel balls for resolving the trouble problems of removing the gates and risers, and eliminating the air bubbles in the casting . In this machine there are upper and lower presses each connecting with 100~400 pressure bars, three metal dies, upper middle and lower, each with 100~400 holes, two pouring gates with thin film, and vacuum suction nozzle, A large amount of steel balls is required annually in selecting mine ore, cement making and fire power stations in China. If this invention can be broadly enlarged, we can save a lot of money every year. |
Application Number
申请号 |
86100682 |
Application Date
申请日 |
1986.01.27 |
| Title 名称 |
Automatic gastight machine for vacuum die casting of nodular cast iron balls without gate and riser |
Publication Number
公开号 |
1003021 |
Publication Date
公开日 |
1986.09.10 |
| Approval Pub. Date |
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Granted Pub. Date |
1990.11.21 |
| International Classification 分类号 |
B22D17/14,B22D17/20,B22D17/22,B22D18/02 |
Applicant(s) Name
申请人 |
Zhang Ruilong |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Huang Xiulan, Liu Mintian, Zhang Ruilong |
| Attorney & Agent 代理人 |
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| More information 更 多 信 息 |
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