| 摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to fabrication of tubular section from mineral cotton. Proposed process comprises the steps that follow. Thin strip 1 is sawn from green board of mineral cotton and said strip is cut in length in compliance with preset wall depth of section being fabricated. Said strip is wound on rod 2 to get multilayer cylinder. Said rod with wound cylinder is placed in forming device and processed therein. Prior to winding of strip 1 on rod 2 and/or at winding said strip on rod, granulated material 3 of high heat insulation properties is applied on said rod between plies of mineral cotton.EFFECT: simple fabrication, netter heat insulation.4 cl, 1 dwg |
