| 摘要 |
1473339 Producing copper-iron TH GOLDSCHMIDT AG 25 June 1974 [29 June 1973] 28200/74 Heading C7D An aluminothermic reaction mixture for producing a sound i.e. fore-free melt of Cu-Fe for welding cables comprises 44À5-52% copper oxide with an oxygen content of 11-15% 35-40% iron oxide, with an oxygen content of 26-30% 12-15% Al shot with a mean particle size of 0À2-0À3mm. The optional addition of 1-3 parts by weight of an Fe-Mu alloy, 55:45, may be made, with or without 3-4À5 part by weight of a Ca-Si alloy with a ratio 1:2-2À6. A further addition of 0À1- 0À5 parts by weight. Carbon with a mean particle, size of less their 0À2mm may be made to omit degasification, together with conventional additives for improving weld quality.
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