METHOD FOR PRODUCING HIGH ACCURACY thin-walled tubes of alloy DEFORMATION-reinforcing copper-based alloys

摘要

1. A process for the production of thin-walled tubes of high accuracy of the strain-hardenable alloyed copper-based alloys containing 0,4-3% of beryllium, nickel or cobalt, - up to 2%, comprising a radial forging preform on the fixed mandrel with a short conical working surface located in crimping zone for one or more passages, characterized in that the deformation of the last transitions produce cold forging radial stretch (ukovom) not more than 1.3 for the transition, and the blank pipe is subjected before each transition gom geniziruyuschey quenching on α - solid solution by heating above the transformation and the sharp evtektoydnogo ohlazhdenii.2. A method according to claim 1, characterized in that the thick-walled initial tube preform previously subjected to hot forging at a radial mandrel by heating the preform to a forging temperature with a hood (ukovom) for the transfer of no more 3,5.3. A method according to claim 1 or 2, characterized in that the pre-hot forging is subjected to a radial tubular billet having a thickness of more than 7 mm.