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

摘要

The endothelium in small station provides high-quality steel and its material hot steel plate and these manufacturing methods.At the speed of% mass, Ti contains 0.031 ~ 0.200%, and more than 0.05% Ti in tissue enters the country for 20 132100;In the form of% by mass, Ti contains 0.031-0.200%, and more than 0.005% of Ti in the tissue is used as the thermal development steel plate which was not used in the previous period.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 0 031 0 200 TTi TTi - 400 TTi - 400 TTi - 500 10 2Fs TTi - 500