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Environmental protection, healthy new type leadless easy cutting corrosion resistant low boron calcium brass alloy

A brass alloy, easy-cutting technology, applied in valve parts, lead-free easy-cutting corrosion-resistant low-boron-calcium brass alloy, civil water supply system pipe castings, switch connectors, can solve the problem of high raw material costs and copper content in alloys high, weak market competitiveness and other issues, to achieve the effect of excellent cutting performance

Active Publication Date: 2007-08-22
NINGBO POWERWAY ALLOY MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This alloy belongs to copper-zinc-silicon alloy, because the alloy contains high copper content, the cost of raw materials is correspondingly high (more than 10% higher than our "Environmental and Healthy New Lead-free Easy-cutting Corrosion-Resistant Low Boron-Calcium Brass Alloy" ), the market competitiveness is weak

Method used

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  • Environmental protection, healthy new type leadless easy cutting corrosion resistant low boron calcium brass alloy
  • Environmental protection, healthy new type leadless easy cutting corrosion resistant low boron calcium brass alloy
  • Environmental protection, healthy new type leadless easy cutting corrosion resistant low boron calcium brass alloy

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[0121] Table 11: Example of the composition of one of the inventions of the lead-free, easy-cutting, corrosion-resistant, low-boron-calcium brass alloy of the present invention: (wt%)

[0122] Table 12: Example of the composition of the second invention of the lead-free, easy-cutting, corrosion-resistant, low-boron-calcium brass alloy of the present invention: (wt%)

[0123] Table 13: Example composition of the third invention of the lead-free, easy-cutting, corrosion-resistant, low-boron-calcium brass alloy of the present invention: (wt%)

[0124] Table 16 Comparison of machining comprehensive cutting performance of the invention alloy and the comparison alloy

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Abstract

An environment protection type anticorrosion non-lead low-BCa brass alloy easy to machine contains Cu (55-65 wt.%), Ca (0.004-0.25), Sb (0.1-0.5), B (0-0.05) and at least two of Ti, Ni, Fe, Si, SN, Al, P and RE. Its preparing process includes such steps as alloying, smelting by covering method, conticasting, high-ratio squeezing at 680-730 deg.C, intermediate heat treating at 420-700 deg.C, and annealing. It has high cutting and weldign performance.

Description

Technical field [0001] The invention relates to a lead-free brass alloy, in particular to a lead-free, easy-cutting, corrosion-resistant, low-boron-calcium brass alloy (PWEHSNBRASS) with excellent mechanical properties and corrosion resistance. It is especially suitable for civil water supply system pipe castings, valves, switch connectors; connectors for electronic communication devices; household electrical appliances; photoelectric components for lamps and photographic equipment; children's toys, and parts manufacturing in machinery and automobile manufacturing. . It is a new type of metal material that is beneficial to human nutrition, health and environmental protection, and it is also another new type of ideal substitute for lead brass that is widely used and can cause adverse effects on the human body and the environment. Background technique [0002] Lead brass has excellent cold and hot processing performance, excellent cutting performance and self-lubricating characteri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04
Inventor 张明谢潇蔡洎华孟宪旗
Owner NINGBO POWERWAY ALLOY MATERIAL
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