Lead-free environment-friendly silicon brass water meter shell and alloy preparation method

A technology of water watch case and silicon brass, which is applied in the field of lead-free, easy-cutting and environmentally friendly silicon brass alloy materials, can solve the problems of casting yield decline, shrinkage cavity, cracks, etc., to improve fluidity, ensure quality and yield, The effect of excellent casting properties

Inactive Publication Date: 2018-01-19
浙江中瀚智能控制股份有限公司
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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, 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

Method used

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  • Lead-free environment-friendly silicon brass water meter shell and alloy preparation method
  • Lead-free environment-friendly silicon brass water meter shell and alloy preparation method
  • Lead-free environment-friendly silicon brass water meter shell and alloy preparation method

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Embodiment Construction

[0030] The present invention will be further described below with specific examples, a kind of lead-free environment-friendly silicon brass alloy material, the chemical composition of this alloy material is as follows:

[0031]

[0032] The balance is zinc and unavoidable impurities.

[0033] The method for preparing the above alloy is as follows: the first step is to preheat the power frequency induction furnace, select cathode copper and charcoal, and add materials to the power frequency induction furnace so that the charcoal covers the cathode copper;

[0034] The second step is to gradually heat the power frequency induction furnace to melt the cathode copper;

[0035] The third step is to add copper-silicon master alloy, wherein the mass percentage of silicon is 10-20%;

[0036] The fourth step is to melt and fully stir to add zero zinc, and fully stir to make the alloy melt mix evenly;

[0037] The fifth step, add refining agent and stir;

[0038] Step 6: After ful...

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Abstract

The invention relates to a lead-free environment-friendly silicon brass water meter shell and an alloy preparation method, and belongs to the technical field of alloy materials. The chemical composition of the alloy material comprises, by mass, 72%-80% of copper, 0.7%-3.0% of silicon, no more than 0.2% of aluminum, no more than 0.15% of lead, no more than 0.3% of iron, no more than 0.3% of tin, nomore than 0.5% of nickel, and the balance being zinc and unavoidable impurities. The alloy material has the excellent casting performance, anti-corrosion performance and subsequent machining performance and is easy to cut; and the alloy material is especially suitable for water supply system castings, valve pieces and so on, and is a metal material conducive to human health and environmental protection, and is also a good substitute for lead brass which is widely used and has baneful influence on human bodies and environment.

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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Patent Type & AuthorityApplications(China)
IPC IPC(8): C22C9/04C22C1/03C22C1/06G01F15/14
Inventor蒋明川
Owner浙江中瀚智能控制股份有限公司