Title: Method for production of bornite decorative material
Application Number: 96107613 Application Date: 1996.05.23
Publication Number: 1141857 Publication Date: 1997.02.05
Approval Pub. Date: Granted Pub. Date: 2000.09.27
International Classifi-cation: B22D11/04,B22D17/00,B44C1/00,C22F1/08
Applicant(s) Name: Kunming Noble Metal Inst. Address: 650221
Inventor(s) Name: Xu Kun
Attorney & Agent: HE TONGPEI
Abstract:
     The preparation method for spotted copper decorative material is characterized by including such steps: placing pure copper in crucible, smelting in induction furnace and ingot casting, rolling peeled ingot to make 96-98% large deformation, annealing for 0.5-1.5 hr. at 850-1050 deg.C, then placing the obtained material in location reagent, soaking it for 5-8 min, finally large spots can be developed, and then the spot-developed material is dried by blower fan and coated with paint for protection.
Time: 7