发明名称 |
Scarfing method and apparatus |
摘要 |
<p>A thermochemical scarfing method and apparatus are disclosed which allows a greater diagonal standoff distance from the metal workpiece during preheating. The method includes preheating the end of the metal workpiece, and then scarfing the workpiece by directing a scarfing oxygen stream onto the workpiece at an acute angle and while moving the workpiece past the oxygen outlet port. The preheating step includes generating a high speed stream of oxidizing gas and a concentric stream of fuel gas coaxially about the central stream, so that the momentum of the central stream is maintained. As a result, the effective flame heating distance may be extended, and the manifold and head assembly which supports the preheating gas nozzles may be moved back from the workpiece a significant standoff distance so as to avoid damage from dislodged molten metal slag.</p> |
申请公布号 |
EP0705656(A2) |
申请公布日期 |
1996.04.10 |
申请号 |
EP19950119086 |
申请日期 |
1992.11.27 |
申请人 |
ESAB WELDING PRODUCTS, INC. |
发明人 |
SHOWALTER,MICHAEL S.;GUSKY, FRANK J.;DAWSON, JOHN G., JR. |
分类号 |
B23K7/06;B23K7/08;F23D14/56;(IPC1-7):B23K7/00 |
主分类号 |
B23K7/06 |
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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