| 摘要 |
Pressure-resistant solder crack free welding of brass with 55-85 (55-65)% Cu, particularly Muntz metal, with brass or steel takes place using arc discharge under protective gas. Welding material used consists of Ni alloy containing >85, advantageously >90% Ni; Ni-Cu alloy containing 65-71% Ni or an Al bronze containing 77% Cu, 7-8% Al, 8-10% Mn, 2.5-3.5% Fe and 2.5-3% Ni. Welding pref. takes place with 80-150 (110-140). A basic current, 260-340 (270-300). A total current, 28-32 (28-30) V basic voltage, 30-36 (32-34) V overall voltage and 80-160 Hz frequency. - Pref. a 2-3 mm thick reinforcing layer of Ni alloy with over 85% Ni or Ni-Cu alloy with 65-71% Ni is previously applied, by short arc welding, to steel article edge to be welded.
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