Leadless environment friendly silicon brass alloy material suitable for gravity force cast and manufacture method thereof

An alloy material and gravity casting technology, which is applied in the field of lead-free easy-cutting environment-friendly silicon brass alloy materials, can solve problems such as casting yield decline, shrinkage cavity, cracks, etc., and achieve improved fluidity, guaranteed quality and yield, and excellent The effect of casting properties

Inactive Publication Date: 2009-01-14
浙江天申铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned alloy materials take into account many uses as plastic alloys, rolled alloys or cast alloys, but cause practical shortcomings in the process of practical application
For example, due to poor fluidity in the casting process,

Method used

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  • Leadless environment friendly silicon brass alloy material suitable for gravity force cast and manufacture method thereof

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Embodiment Construction

[0048] The lead-free environment-friendly brass alloy material suitable for gravity casting and the preparation method thereof of the present invention will be further described in detail in conjunction with specific examples below, but the protection scope of the present invention cannot be limited by this.

[0049] The present invention is suitable for the lead-free environment-friendly brass alloy material composition requirement of gravity casting as follows:

[0050] Element Mass %

[0051] Copper: 70%~80%

[0052] Silicon: 0.7%~3.0%

[0053] Aluminum: 0.2%~0.70%

[0054] Lead: ≤0.1%

[0055] Iron: ≤0.5%

[0056] Tin: ≤0.3%

[0057] Nickel: ≤0.5%

[0058] The balance is zinc and unavoidable impurities.

[0059] On the premise of the above composition requirements, as an optimized configuration to achieve better technical effects, the following scheme is proposed:

[0060] Element Mass %

[0061] Copper: 75%~78%

[0062] Silicon: 0.9%~2.8%

[0063] Aluminum: 0.4...

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PUM

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Abstract

The invention relates to a lead-free environment-friendly silicon brass alloy material suitable for gravity casting. The chemical elements of the alloy material comprises 70 to 80 percent of brass, 0.7 to 3.0 percent of silicon, 0.2 to 0.70 percent of aluminum, 0.1 percent or less than 0.1 percent of lead, 0.5 percent or less than 0.5 percent of iron, 0.3 percent or less than 0.3 percent of tin, 0.5 percent or less than 0.5 percent of nickel, balance zinc and unavoidable impurities. The lead content of the silicon brass alloy material is greatly reduced and conforms to the environmental protection and health requirements, and meanwhile the lead-free environment-friendly silicon brass alloy material has excellent casing performance, is suitable for casting, in particular for larger-scale gravity casting, and has extensively application prospect in the sanitary-ware industry.

Description

technical field [0001] The invention relates to a lead-free brass alloy, in particular to a lead-free easy-cutting environment-friendly silicon brass alloy material with excellent casting performance, corrosion resistance performance and subsequent machining performance. They are especially suitable for water supply system castings, valves, etc. They are metal materials that are beneficial to human health and environmental protection, and are also excellent substitutes for lead brass, which is widely used at present and can cause adverse effects on the human body and the environment. Background technique [0002] Lead brass has excellent mechanical and physical properties, good casting performance and cutting performance, and is cheap, so it is widely used in instrumentation, electronics, electrical appliances, daily hardware, drinking water systems, etc., especially Hpb59-1 The production and application volume is the largest. [0003] However, lead and its compounds are o...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/03
Inventor 蒋明川
Owner 浙江天申铜业有限公司
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