Lead-free environmental silicon brass alloy bar or alloy ingot and preparation method thereof

Abstract

The invention relates to a lead-free environmental silicon brass alloy bar or alloy ingot and the alloy material comprises the following chemical elements by weight percent: 60%-70% of copper, 0.7%-3.0% of silicon, 0.15% or less of aluminium, 0.25% or less of lead, 0.5% or less of iron, 0.3% or less of tin, 0.1% or less of phosphorus, 0.2% or less of nickel, 0.25% or less of antimony and the balance zinc and unavoidable impurities. The lead content of the silicon brass alloy material of the invention is greatly reduced, which corresponds to the demand of environmental protection and health; the alloy material has good casting property and is applicable to casting, in particular to large-scale gravity casting so as to have broad application prospect in health fittings industry.

Description

technical field [0001] The invention relates to a lead-free brass alloy, in particular to a lead-free, easy-cutting and environmentally friendly silicon brass alloy material with excellent casting performance, corrosion resistance and subsequent machining performance, and its appearance is in the form of an alloy rod or alloy ingot. They are especially suitable for casting water supply system castings, valve parts, 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 will 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 appl...

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, if it is used in gravity casting, more casting defects such as cracks, lack of pouring, and shrinkage cavities will appear, resulting in a decline in the yield of castings, affecting casting costs and castings as high-end products. application

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