METHOD OF PROTECTING SURFACE OF LOW-ALLOY STEEL SLAB BEFORE ITS HEATING IN CONTINUOUS FURNACE FOR ROLLING

摘要

FIELD: metallurgy.;SUBSTANCE: aluminium gas-thermal coating is deposited on slab wide faces. Note here that said coating features depth defined by the formula: hn=[a₀+a₁·τ+a₃·τ+a₃·h]±0.02 mm, where hn os coating thickness, mm; t is slab heating temperature, °C; τ is slab heating duration, h; h is slab thickness, mm; a₀ =-1.1525 mm; a₁=0.001088 mm/°C; a₂=0.1425 mm/h; a₃=-0,000675 are empirical factors defined by experience.;EFFECT: decreased thickness of defect layer after slab hot rolling.;3 ex