Title: Methods for manufacturing flux cored wire for welding stainless steel and products thereof
Application Number: 200610111508 Application Date: 2006.08.21
Publication Number: 1919526 Publication Date: 2007.02.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B23K35/40;B23K35/36;B23K35/00;B21C3/02;B21C9/02
Applicant(s) Name: Kiswel Ltd. Address:
Inventor(s) Name: Jang Jong H.;Park Byung H.
Attorney & Agent: zhou jianqiu wang fengdong
Abstract:
    Disclosed is a method for manufacturing a flux cored wire for welding stainless steel of 0.9-1.6 mm in diameter having a seamed portion, which the method includes the steps of: forming a hoop (stainless steel 304L or 316L) into a U-shape and filling the hoop with a flux mixture, thereby forming a tube having a seamed portion; performing a primary drawing process on the tube shaped wire using a lubricant; performing a bright annealing process to relieve work hardening of the primarily drawn wire; performing a secondary drawing process on the wire until an accumulated reduction ratio after the bright annealing process falls within the range of 38-60%; physically removing a lubricant residue on the surface of the secondarily drawn wire; and coating the wire with a surface treatment agent.
Time: 10