Arsenic-containing low-lead brass alloy

Abstract

The invention belongs to a manufacturing field of metal alloy materials, especially relates to a brass alloy. The invention is an arsenic-containing low-lead brass alloy which comprises the components based on a weight percentage as follows: 58 to 60% of copper, 36 to 37.5% of zinc, 0.6 to 0.65% of aluminum, 1.2% to 1.6% of bismuth, 0.05% to 0.1% of arsenic, 0.45% to 0.65% of tin, 0.1% to 1.0% of nickel, 0.2% to 0.5% of iron, 0.01% to 1.0% of sulfur, 0 to 0.01% of rhenium, 0 to 0.01% of phosphor and selenium, 0 to 0.05% of silicon and chromium, 0.02% of manganese, 0 to 0.08% of magnesium, 0.005% to 0.% of stibonium, and balance impurity. Compared with the prior art, the arsenic-containing low-lead brass alloy has the advantages of better polishing and optical rotation, corrosion resistance and strength performance, thereby avoiding influencing mechanical properties and cutting performance of brass alloy, and meeting the environmental protection and human health purposes.

Description

technical field [0001] The invention belongs to the field of metal alloy material manufacture, and in particular relates to a brass alloy. Background technique [0002] Brass is widely used in electronics, construction, machinery and other technical fields. The properties of brass include castability, machinability, corrosion resistance, thermal conductivity and electrical conductivity. One major disadvantage concerns machinability. Due to a certain viscosity of copper, high temperature will be generated during cutting, which will cause copper to adhere to the tool and increase energy consumption. Among them, the brass alloy with lead has good plasticity at high temperature, can be forged and cast, and at the same time can make it obtain good mechanical properties, mechanical properties and cutting properties. At present, the brass alloys used in the bathroom manufacturing industry are generally C37700 forged and polished copper alloy, C37710 ordinary copper alloy, C85700...

AI Technical Summary

Problems solved by technology

[0006]In order to solve the harm to the environment and human health caused by the heavy metal lead in the prior art, the existing low-lead brass is difficult to process, the size is not easy to control, and the tool is easy to The wear life is short, and in copper die-casting copper casting, the shrinkage rate is too large, the crystal is thick, cracks are easy to appear, the fluidity is poor, and the molding hardness is increased, and the post-processing is more difficult. The invention provides a brass that does not affect Alloy mechanical properties and cutting performance, and more in line with environmental protection and people's health arsenic-containing low-lead brass alloy