Jiang fuzai, the hot rolled steel plate for which the ginger is not used and the manufacturing methods

摘要

In the small deformation station, the steel with excellent crack propagation characteristics and its material hot plate and these manufacturing methods.At the speed of% mass, Ti contains 0.010-0.120%, and more than 0.05% Ti in tissues enters the country for 20-1302100;In the form of% by mass, Ti contains 0.010-0.120%, and more than 0.05% of Ti in the tissue is used as the hot rolled steel plate for the supplement of ginger.After forming the hot rolled steel sheet, the steel is heated to a temperature above 550 ° C. and 1050 ° C. or lower, and then subjected to a heat treatment for cooling the temperature range of 550 to 400 ° C. at an average cooling rate of 10 ° C./s or more. Method of manufacturing the member.Ti 0 010 0 120 TTi TTi - 400 TTi - 400 TTi - 500 10 2Fs TTi - 500