| 摘要 |
<p>PCT No. PCT/FR84/00108 Sec. 371 Date Dec. 18, 1984 Sec. 102(e) Date Dec. 18, 1984 PCT Filed Apr. 18, 1984 PCT Pub. No. WO84/04069 PCT Pub. Date Oct. 25, 1984.A method and device for assembling connection fittings such as couplings, between hard components, such as metal pipe and a body formed of a softer substance to obtain a permanent coupling able to withstand aging and thermal shock conditions. The parts coupled are formed of materials of different hardness which are first force fit together. One of the parts is then rotated at high speed so that the part made of the softer material is locally heated until it melts. The result is a snug but swivelable connection free of internal stress.</p> |
