发明名称 |
Insert-cast welding of fine-pearlitic rails |
摘要 |
The method concerns insert-cast welding of fine-pearlitic rails by pouring aluminothermally produced steel into a mould surrounding both rail ends. It is characterised by the following facts: (a) after the joint has cooled down, the running track and adjoining regions are shock-heated from the top by means of a welding torch for a period of 50 to 150 seconds; (b) the torch is supplied with oxygen at least at 10000 litres/hr and with propane or acetylene at 3500 litres/hr; and (c) the torch distance (a) measured in mm is equal to 0.1-1 times the numerical value of the wt. in kg/m of the rail.
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申请公布号 |
DE4319417(C1) |
申请公布日期 |
1994.08.04 |
申请号 |
DE19934319417 |
申请日期 |
1993.06.11 |
申请人 |
ELEKTRO-THERMIT GMBH, 45139 ESSEN, DE |
发明人 |
KUSTER, FRANK, DR., 40883 RATINGEN, DE |
分类号 |
B23K23/00;B23K31/00;C21D1/38;C21D9/04;E01B11/52;E01B31/18;(IPC1-7):B23K23/00;B23K31/02 |
主分类号 |
B23K23/00 |
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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