Brass alloy and method for manufacturing the same

Abstract

A brass alloy, with a total weight percentage thereof counted as 100 wt %, includes the following elements: 60 wt % to 65 wt % of copper, 0.1 wt % to 0.35 wt % of bismuth, 0.15 wt % to 0.5 wt % of antimony, a balance of zinc, and an inevitable impurity.

Description

BACKGROUND[0001]1. Technical Field[0002]The present invention relates to a brass alloy, and in particular, to a brass alloy that does not contain lead, is easily cut, and resists dezincification.[0003]2. Related Art[0004]Generally, 38% to 42% of zinc is added to brass alloy used for processing. To be better processed, the brass usually contains 2% to 3% of lead to increase the strength and workability. The leaded brass alloy has desirable formability (making it easy to manufacture products of various shapes), machinability and attrition resistance, and is hence widely applied to machining components of various shapes. The leaded brass alloy accounts for a large share in the copper industry, and is recognized as an important basic material in the world. However, during manufacturing or using of the leaded brass, lead is easily dissolved out in the form of solid or gas. Medical research points out that lead causes a great damage to human hematopoietic and nervous systems, and especial...

AI Technical Summary

Benefits of technology

The present invention is a brass alloy that can be used to make products like faucets and bathroom accessories. It is made by adding different metals to a brass alloy and using a high-frequency melting furnace. The resulting brass alloy has good machining properties, is strong, and can resist damage from water. It is also easy to cut and does not contain any harmful materials like lead. This makes it a suitable replacement for traditional leaded brass.

Problems solved by technology

However, during manufacturing or using of the leaded brass, lead is easily dissolved out in the form of solid or gas.

Medical research points out that lead causes a great damage to human hematopoietic and nervous systems, and especially kidneys and other organs of children.

In addition, when zinc content in brass alloy exceeds 20 wt %, a dezincification corrosion phenomenon occurs easily.

The dezincification severely destroys the structure of the brass alloy, reduces surface strength of a brass product so as to even leads to perforating of a brass pipe, and thus the dezincification greatly reduces a service life of the brass product and causes usage problems.

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