Title: Regeneration of crushing drum
Application Number: 85107243 Application Date: 1985.09.28
Publication Number: 1010063 Publication Date: 1987.04.08
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B02C15/06,B23K9/04,B23K35/24,C21D9/38,C22C37/08
Applicant(s) Name: Mitsubishi Heavy Industrics Ltd. Address:
Inventor(s) Name: Iritomi Hajime
Attorney & Agent: QUAN JING WU DAJIAN
Abstract:
     Feature of the present invention is that the worn-out coal-crushing drum is heat-treated and a hardened built-up weld layer is formed on the heat-treated worn-out surface. Since only the worn-out part of the coal-crushing drum undergoes hardening built-up welding, so the present invention can be used for drum recycling, thereby lowering operating cost; besides, due to the reduction of drum manufacturing time, the coefficient of utilization of the whole coal-crushing mill and even that of the complete pulverized coal fuel system can be increased.
Time: 3