METHOD OF PRODUCING LARGE-SIZE THICK-WALL PARTS

摘要

FIELD: machine building. ^ SUBSTANCE: SUSBTANCE: invention relates to production of large-size thick-wall parts, i.e. up to 1500 mm-dia. and up to 500mm - thick parts, from compositions based on tungsten, iron and polypropylene powders and aims at providing protection against radiactive radiation in operation of nuclear power plants. Using a polypropylene rubber in the above composition and a preset layers thickness on assembling them by a shrinkage fit allows producing the said parts without defects and with the ultimate fracture strength at the joint of layers making at least 120 kg/cm2. ^ EFFECT: allows production of good large-size parts with no defects. ^ 1 tbl, 11 spl