METHOD OF SPUN CASTING OF LENGTHY THIN-WALL STEEL PIPES

摘要

FIELD: process engineering. ^ SUBSTANCE: invention relates to foundry. Proposed method allows producing lengthy thin-wall pipes from various steels with diametre of 0.06-0.35 m, wall thickness of 0.006-0.020 m and length of up to 6.0 m. Proposed method comprises applying antistick paint with 0.0007 to 0.0015 m-layer thickness, onto steel mold inner surface heated with increasing temperature over its length at 200C nearing casing end to 300C at not casting end. Metal is poured at mass flow rate of 20 to 40 kg/s and temperature exceeding its Tpeak by 120 to 210 C. Mould is rotated at the rate corresponding to gravity factor of 120-220 on ingot inner surface. ^ EFFECT: dense structure one pipe length and cross section with no defects and high physical and mechanical properties of metal. ^ 2 tbl, 1 ex