A treatment method for surface brightening of copper-nickel alloy pipe material

Abstract

A treatment method for brightening surfaces of copper nickel alloy tubes is provided. The method comprises following eight steps in order: polishing, removing oil, washing with clear water at room temperature after oil removing, pre-pickling, washing with clear water at room temperature after pickling, performing chemical polishing, cleaning and dehydrating. The step of performing chemical polishing includes following three subsidiary steps: preparing a polishing solution, ageing and polishing. The polishing solution comprises 350-430 mL / L of H2O2, 30-50 mL / L of concentrated H2SO4, 10 mL / L of concentrated H3PO4, 17-20 mL / L of C2H2OH, 1-1.5 mL / L of OP-10, and 1 g / L of BTA, with the balance being H2O. The polishing solution is simple in preparation, low in toxicity and harm, high in production efficiency and low in cost. The surfaces of polished copper nickel alloy tubes are bright, beautiful and flat. The method saves treatment time, increases the production efficiency, reduces energy consumption, and improves surface quality of the copper nickel alloy tubes to a certain degree.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a treatment method for brightening the surface of a copper-nickel alloy pipe material. Background technique [0002] The grade of the copper-nickel alloy pipe is BFe10-1-1 and is referred to as B10 for short. B10 has excellent electrical conductivity and strong corrosion resistance and is widely used in finished products, mechanical parts and tool products. However, if B10 products are exposed to the atmosphere and humid environment for a long time, they will often be corroded and lose their luster, which will affect their use value. In order to prevent tarnishing, B10 needs to be surface treated, polished and passivated. [0003] Mechanical polishing refers to the use of mechanical polishing to polish the metal surface. Chemical polishing and electrochemical polishing are finishing treatments, which can be used after mechanical polishing or directly....

AI Technical Summary

Problems solved by technology

Compared with chemical polishing, electrochemical polishing can achieve higher surface finish, but in electrochemical polishing, too high or too low voltage will have adverse effects, sometimes even without any polishing phenomenon

[0004] There is no relevant report on the treatment method of improving the surface brightness of B10 by chemical polishing