Processing method of coated steel plate


Application Number: 00105352
Application Date: 2000.03.30
Publication Number: 1282637
Publication Date: 2001.02.07
Priority Information: 1999/8/2 JP 218748/99
International: B05D3/00;B21D5/00;B21D51/18
Applicant(s) Name: Toshiba K.K.
Address:
Inventor(s) Name: Kimura Masaru;Ikami Hiroshi;Nakauchi Hideto
Patent Agency Code: 31100
Patent Agent: zhang mingyu
Abstract A working method of a painted steel plate of the invention can prevent a painted film at the bent part from degrading in bending the painted steel plate and allow a cold rolled steel plate for a base steel plate for a painted steel plate to be used. The working method of a painted steel plate has a bending process to bend the painted steel plate and a heating process to heat at least a bent part of the painted steel plate. By this method, in bending the painted steel plate, even if a residual stress is generated to a painted film at a bent part, at least a bent part of the painted steel plate is heated by the heating process, so that the residual stress is eliminated.