发明名称 |
RECOVERY OF TUNGSTEN CARBIDE FROM SCRAP MINING BITS |
摘要 |
<p>Tungsten carbide inserts are recovered from scrap mining bits by treatment in a sulphuric acid bath to eat away part of the steel surrounding the inserts and then heating the bit and vibrating the heated bit to knock out the inserts. In a modification used on cross-type bits, heat and vibration alone are used.</p> |
申请公布号 |
CA1090987(A) |
申请公布日期 |
1980.12.09 |
申请号 |
CA19780304603 |
申请日期 |
1978.06.01 |
申请人 |
FERNAND PICHE ENTERPRISES LIMITED |
发明人 |
PICHE, FERNAND J. |
分类号 |
C23F1/02;(IPC1-7):23F1/02 |
主分类号 |
C23F1/02 |
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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