Highly-color-change-resistant golden brass alloy and preparation method

Abstract

The invention discloses a highly-color-change-resistant golden brass alloy and preparation method. The highly-color-change-resistant golden brass alloy comprises the following components of Mn, Sn, Ni, Zn, Sr, Ce, B, Si and the balance Cu and inevitable impurities. The preparation process comprises the following steps of casting, hot rolling, cold rolling, intermediate annealing, cold finish roughrolling, cold finish rolling and finished product annealing. The alloy produced by the method is high in golden degree, good in color-change resistance, excellent in hot and cold machining performance, small in deformation resistance, free of precious metal elements and relatively low in cost; the alloy produced by the method is reasonable in component, the golden degree of the alloy is improvedthrough reasonable matching of cheap manganese, nickel, zinc and tin, the zinc content is lower than 20% so that dezincification corrosion can be avoided, through the reasonable combination strontium,cerium, boron and silicon, the process performance can be improved, and the color-change resistance can be improved; according to the alloy, the production process is simple, the production cost is low, the machining performance is good, the golden degree is high, the color-change resistance is excellent in the environment of salt mist, high humidity, synthetic perspiration and the like, and thealloy is suitable for industrial production.

Description

technical field [0001] The invention relates to a gold brass alloy with high discoloration resistance and a preparation method, which are mainly used in artworks, bookmarks, commemorative coins (chapters) and various decorative materials. It belongs to the field of new material technology. Background technique [0002] Gold has a dazzling golden yellow color and very stable chemical properties. In addition to being widely used as a functional material in electronic information and other fields, gold has always been the preferred material for artworks, handicrafts and other products. However, due to its low reserves and high price, as a large art market, a large number of applications are restricted. Therefore, high-quality and cheap imitation gold alloy products are getting more and more attention. [0003] The commonly used imitation gold products at home and abroad are mainly copper-based imitation gold products. Domestic research is mainly to add aluminum, zinc, tin, ni...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of poor anti-tarnish ability of the existing golden copper alloy, and the high cost of preparation of the material due to the high price of alloy elements such as indium and silver, and provide an alloy with reasonable composition, low raw material price, The production process is simple, the production cost is low, the processing performance is good, the gold degree is high, the anti-discoloration performance is excellent in the environment such as salt spray, high humidity, artificial sweat, the environment-friendly high anti-discoloration golden copper alloy and its preparation method, to meet various Demand for high tarnish-resistant, golden copper alloys for decorative materials and handicrafts