337 Bi_<49>Pb_<18>Sn_<12>In_<21>低融点合金をロストコアとして用いたA6063パイプの側方押出し(塑性加工)

概要

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In this paper, authors report a new bulging process of hollow products, which is lateral extrusion with lost core (LELC), and its application on pipes of A6063 aluminum alloy. Outline of LELC process is as followings : At first, cavity of the product, is filled up by liquid of low temperature melting material, for instances, low temperature melting alloy, ice (or water) and wax. Then low temperature melting material is solidified to be a soluble core of pipe. Authors call this soluble core the 'lost core.' The third, the material is compressed longitudinally as a composite billet, and extruded for lateral direction. After deformation, low temperature melting material is melted and removed. In this paper, authors apply this method to bulge A6063 pipes with using lost core of Bi_<49>Pb_<18>Sn_<12>In_<21> low temperature melting alloy. To compare with plain bulge process under hydrostatic pressure, its forming limit is improved drastically.
一般社団法人日本機械学会の論文
2000-06-23