| 摘要 |
<p>1388211 Welding by fusion and pressure; soldering C U PEDDINGHAUS 1 Jan 1973 [11 Jan 1972 14 Dec 1972] 111/73 Heading B3R [Also in Divisions F2 and F4] A fully charged gas cartridge is produced by loosely assembling a cartridge body 12 and cap 22 in a chamber defined by separable parts 20, 21, thereafter the chamber is pressurized through a connection 4 after which the cap 22 is forced into sealing engagement with the body 12 to trap the gas therebetween, the parts 20, 21 then being separated to allow access for welding or soldering of the cap to the body. Electric-arc welding under protective gas conditions is the preferred welding method, but friction and electron-beam welding may also be used. A piston 8, possibly provided with a magnetic end, and slidable through a seal 9 in the part 21 provides the means for forcing the body and cap into sealing engagement. Separation of the parts 20, 21 is effected by sliding the part 21 upwardly along the piston 8. The part 20 is rotatable by a pinion 19 to facilitate welding of the cap to the body. In a second embodiment the cap is a plain disc (16), the cylinder (13) of a hydropneumatic oscillation damper being welded to the rim of the body to retain the disc in position.</p> |
