发明名称 |
Process for preparing tool steel articles by powder metallurgy |
摘要 |
<p>Production of thick deformed or non-deformed objects made from tool steel comprises pouring a melt into a metallurgical vessel; conditioning to improve the degree of purity; adjusting the temperature to a value above the formation temperature of primary precipitation in the alloy; forming a powder having an average grain size of 50-70 mu m from the melt at constant temperature by injection nitrogen; disintegrating in the nitrogen stream; grading the powder; collecting, mixing and pouring into a container and compacting by hot isostatic pressing. The parameters of the pressing cycle are adjusted so that the temperature and pressure in the heating process are elevated.</p> |
申请公布号 |
SI1249510(T2) |
申请公布日期 |
2015.02.27 |
申请号 |
SI20010030841T |
申请日期 |
2001.05.25 |
申请人 |
BOHLER EDELSTAHL GMBH |
发明人 |
TORNBERG CLAES DIPL.-ING. |
分类号 |
C21D7/13;C22C33/02;C22C38/22;C22C38/24;C22C38/30;C22C38/36 |
主分类号 |
C21D7/13 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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