FIELD: manufacture of sintered porous pipes from spherical metal granules. SUBSTANCE: the offered device includes mold and core made of material inert to granules. Mold is made of material whose coefficient of linear expansion is less than that of sintered granules, and core is made of material with coefficient of lines expansion exceeding that of sintered granules. EFFECT: cut down costs of porous pipes from granules by 25-30% due to multiple repeated use of equipment for sintering and use of low const and adaptable to production material for production of core, higher strength of porous pipes due to additional pressing from inside by rigid metal core. 1 dwg, 1 tbl
Authors
Dates
1997-07-10—Published
1994-11-28—Filed