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Brass alloy and manufacturing method thereof

A technology of brass alloys and manufacturing methods, applied in the field of brass alloys, can solve problems such as accelerated dezincification corrosion, brass tube perforation, application problems, etc., and achieve good tensile strength and good dezincification resistance

Active Publication Date: 2015-06-24
METAL INDS RES & DEV CENT
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Problems solved by technology

[0003] In addition, when the zinc content in brass exceeds 20wt%, dezincification (dezincification) corrosion is prone to occur, especially when the brass is exposed to an environment with high chloride ions, such as seawater environment, the dezincification corrosion phenomenon will be accelerated occur
Dezincification will seriously damage the structure of the brass alloy, reduce the surface strength of the brass product, or even cause the brass tube to perforate, greatly shorten the service life of the brass product, and cause problems in application

Method used

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  • Brass alloy and manufacturing method thereof
  • Brass alloy and manufacturing method thereof
  • Brass alloy and manufacturing method thereof

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Embodiment Construction

[0022] According to the manufacturing method of the brass alloy according to an embodiment of the present invention, the brass alloy can have the machinability equivalent to the existing leaded brass, good tensile strength and elongation, and good dezincification resistance , and completely lead-free, very suitable as an alloy material to replace the existing leaded brass for the manufacture of products. Based on the total weight of 100wt%, the brass alloy includes the following components: 60-65wt% copper, 0.1-0.35wt% bismuth, 0.15-0.5wt% antimony, a balance of zinc, and impurities. The balance amount of zinc refers to the weight percentage of zinc obtained by subtracting the weight percentage of copper, bismuth, antimony and impurities calculated by 100w% of the brass alloy. The brass alloy may also include one or more mixtures selected from aluminum, tin, phosphorus, manganese and boron, and the total content of the selected mixture accounts for 0.2-2wt% of the brass alloy....

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Abstract

The present invention discloses a brass alloy and a manufacturing method thereof, wherein the brass alloy comprises 60-65 wt% of copper, 0.1-0.35 wt% of bismuth, 0.15-0.5 wt% of antimony, and the balance of zinc and impurities. The present invention provides the lead-free brass alloy with the excellent dezincification resistance.

Description

technical field [0001] The invention relates to a brass alloy, in particular to a lead-free, easy-cutting and anti-dezincification brass alloy. Background technique [0002] Generally used as brass for processing, the proportion of zinc metal added is 38 to 42%. In order to make brass work better, there is usually 2-3% lead in brass to increase strength and workability. Leaded brass has excellent formability (easy to make products of various shapes), machinability and wear resistance, and is widely used in various shapes of machined parts. It occupies a large proportion in the copper industry and is recognized in the world. important basic material. However, during the production or use of leaded brass, lead is prone to be dissolved in solid or gaseous form. Medical research has pointed out that lead has great damage to human hematopoiesis and nervous system, especially children's kidneys and other organs. All countries in the world attach great importance to the pollutio...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02
Inventor 康进兴叶松玮施景祥
Owner METAL INDS RES & DEV CENT
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