Low-lead brass and casting method thereof

A lead brass and impurity technology, applied in the field of low lead brass alloy and its casting, can solve the problems of difficult machining, poor fluidity, severe dendrites, etc., and achieve the effect of improving thermal cracking resistance

Inactive Publication Date: 2010-09-29
GUANGZHOU NEON PLUMBING PRODS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The manufacturing technology and processing technology of domestic low-lead sanitary products are still in their infancy. Through process research, the copper alloy products of sanitary ware can meet the demand for low-lead sanitary products in the US market and solve the problem of low-lead copper alloys. Technical problems of raw material allocation and production process improvement: Compared with lead brass, there are: 1. Severe dendrites; 2. Poor fluidity, not easy to cut

Method used

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  • Low-lead brass and casting method thereof
  • Low-lead brass and casting method thereof
  • Low-lead brass and casting method thereof

Examples

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Effect test

Embodiment 1

[0021] 59.00% copper, 0.20% iron, 0.025% lead, 0.70% aluminum, 0.10% tin, 0.12% nickel, 0.005% bismuth, 0.025% antimony, 0.50% impurities, and the balance is zinc.

Embodiment 2

[0023] 62.00% copper, 0.10% iron, 0.15% lead, 0.50% aluminum, 0.15% tin, 0.10% nickel, 2.50% bismuth, 0.002% antimony, 0.50% impurities, and the balance is zinc.

Embodiment 3

[0025] 60.00% copper, 0.15% iron, 0.15% lead, 0.60% aluminum, 0.15% tin, 0.10% nickel, 0.04% bismuth, 0.004% antimony, 0.50% impurities, and the balance is zinc.

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Abstract

The invention discloses a low-lead brass, which is characterized by consisting of copper, ferrum, lead, aluminum, tin, nickel, zinc, bismuth, stibium and impurities. In the invention, Bi and Sb replace Pb; the contents of other alloy element components are properly adjusted, so that various relative performances of the researched low-lead bismuth-brass tend to be close to the relative performances of common brass and a low-lead Bi plus Sb brass product can be produced without or seldom changing a process path and parameters for traditional common copper ZCuZn40Pb2 production product.

Description

technical field [0001] The invention belongs to the field of metal alloy material manufacture, and in particular relates to a low-lead brass alloy and a casting method thereof. Background technique [0002] Lead is a multi-harmful and toxic substance that mainly damages the nervous system, hematopoietic system, and digestive system of humans. Lead poisoning is also one of the important factors that cause leukemia, kidney disease, heart disease, and mental disorders. In the sanitary industry, drinking water system components are mostly made of lead brass materials with a lead content of 2%-3%, and the lead on the surface of pipes and valves made of lead brass will be washed away with water, soaked or mixed with water. Other substances react and enter the water and are ingested by the human body, endangering health. [0003] For the current North American region, which will be implemented in 2009, the "Amendment to the California "AB1953 Act"" (this act requires public drinki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04
Inventor 不公告发明人
Owner GUANGZHOU NEON PLUMBING PRODS
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