METHOD FOR PRODUCING STARTING STRIP FROM HYPEREUTECTOID STEELS IN HEAVY BUNDLES

摘要

SUMMARY OF THE INVENTION: billet is rolled at a temperature of 1180-1200 & amp; deg; C and rapidly cooled to a temperature of 680 & amp; deg; C. Coiled and cooled to room bay temperature is heated until complete dissolution excess carbide phase, cooled to ACi - (ACi + 40 & amp; deg; C) is heated until complete dissolution of excess carbides, and cooled to a temperature lower stability of austenite plus 50 & amp; deg; C delayed until completion of the pearlitic transformation. To avoid etching operation in pro- cession heating irregularly wound coils is performed vrsstanovitelnoy isothermal exposure in atmosphere at 500 to 680 & amp; deg; C to complete the reduction scale. 1 ZP f BACKGROUND Table 3.