Low-lead brass alloy and preparing method thereof

A brass alloy and lead brass technology, applied in the field of brass alloy and its preparation, can solve the problems of inability to perform effective processing, poor air density, compactness and polishing performance of brass alloy, and achieve cutting performance and polishing effect. The effect of improving and refining the alloy structure and increasing the density

Active Publication Date: 2014-12-10
泉州华毅商贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a low-lead brass alloy and a preparation method thereof, the main purpose of which is to overcome the defects that existing brass alloys have poor air density, compactness and polishing performance and cannot be processed effectively

Method used

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  • Low-lead brass alloy and preparing method thereof
  • Low-lead brass alloy and preparing method thereof
  • Low-lead brass alloy and preparing method thereof

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Embodiment Construction

[0031] Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0032] In this specification, the components contained in the low-lead brass alloy are based on the total weight of the alloy and expressed in weight percentage.

[0033] First, in the low-lead brass alloy of the present invention, the content of copper and zinc accounts for more than 96.5% by weight of the total alloy weight, wherein copper accounts for 59 to 63% by weight of the total alloy weight, preferably, copper accounts for 50% by weight of the total alloy weight 60.5 to 62% by weight, which can provide good toughness to facilitate subsequent processing of alloy materials.

[0034] Further, in the lead-free brass alloy of the present invention, the content of aluminum accounts for 0.4 to 0.7% by weight of the total weight of the alloy, preferably accounts for 0.5 to 0.6% by weight of the total weight of the alloy. Adding a specific amount of alum...

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PUM

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Abstract

A low-lead brass alloy is provided. The low-lead brass alloy comprises 0.4-0.7 wt% of aluminum, 0.42-1.20 wt% of bismuth, 0.05-1.0 wt% of iron, more than 96.5 wt% of copper and zinc, less than 0.2 wt% of lead, and unavoidable impurities, wherein the copper content in the brass alloy is 59-63 wt%. The invention also relates to a preparing method of the brass alloy. The brass alloy has characteristics of good alloy air tightness, degree of density and polishing performance, and overcomes the technical barrier that the content of the bismuth cannot be higher than 0.5 wt%. The alloy, which can replace lead-containing brass and has good corrosion resistance, casting performance, machinability, corrosion resistance and mechanical properties, and the preparing method thereof are truly provided.

Description

technical field [0001] The invention relates to a brass alloy, in particular to a brass alloy with a lead content of less than 0.2% by weight and a preparation method thereof. Background technique [0002] The main components of brass are copper and zinc, usually in a ratio of about 7:3 or 6:4, and usually contain a small amount of impurities. In order to improve the properties of brass, the known brass often contains 1 to 3% lead by weight to achieve the mechanical properties required by the industry, and thus become an important material in industry, widely used in metals for pipelines, faucets, water supply / drainage systems Devices or metal valves and other products. [0003] However, with the rise of environmental protection awareness, the impact of heavy metals on human health and environmental pollution has gradually been paid attention to. Therefore, restricting the use of lead-containing alloys has become a current trend. Japan, the United States and other countrie...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/02
Inventor 黄建全
Owner 泉州华毅商贸有限公司
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