Special low-lead environment-friendly brass alloy ingot for gravity casting and manufacturing technique thereof

A gravity casting and brass alloy technology, applied in the metal field, can solve problems affecting the processing and performance of brass castings, and the uneven technical capabilities of plumbing manufacturers, and achieve reasonable ingredients and manufacturing processes, low cost, and excellent casting Effect

Active Publication Date: 2014-01-15
鹤山市金益铜业有限公司
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  • Description
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AI Technical Summary

Problems solved by technology

[0002] The production process of brass castings for plumbing hardware: brass ingot → casting → machining → polishing → electroplating; Experience requires formula, and the technical capabilities of plumbing manufacturers are uneven. There is no general and feasible solution for raw material (brass ingot) formula, which directly affects the processing and performance of brass castings.

Method used

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  • Special low-lead environment-friendly brass alloy ingot for gravity casting and manufacturing technique thereof

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the drawings:

[0028] A special low-lead environmentally friendly brass alloy ingot for gravity casting, which is characterized in that it contains copper Cu60.0-61.5wt%, lead Pb0.20wt%, aluminum Al0.6-0.7wt%, and tin Sn0.05-0.15wt% , Iron Fe0.05-0.15wt%, nickel Ni0.05-0.15wt%, boron B8-12PPM, bismuth Bi0.5-0.7wt%, zinc Zn balance and inevitable impurities 0.2wt%.

[0029] Such as figure 1 As shown, a manufacturing process of a special low-lead environmentally friendly brass alloy ingot for gravity casting includes the following steps:

[0030] a. With feeding materials:

[0031] Main ingredients: use 180KW power frequency electric furnace to melt copper; according to 1800kg of molten copper per furnace, the total weight of copper, zinc, and aluminum is controlled at 50%, specifically: red copper 29%-32% (optimally 30%), zinc 18%-21% (optimally 20%), aluminum 0.4%-0.5% (optimally 0.5%), the r...

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Abstract

The invention discloses a special low-lead environment-friendly brass alloy ingot for gravity casting, which is characterized by comprising 60.0-61.5wt% of Cu, 0.20wt% of Pb, 0.6-0.7wt% of Al, 0.05-0.15wt% of Sn, 0.05-0.15wt% of Fe, 0.05-0.15wt% of Ni, 8-12PPM of B, 0.5-0.7wt% of Bi, 0.2 wt% of inevitable impurity and the balance of Zn. The manufacturing technique comprises the following steps: a. proportioning; b. electric furnace melting; c. degassing and deslagging; d. assaying; e. material supplementation; f. refinement; g. inspection; h. standing; i. casting; and j. inspection and warehousing. Compared with the prior art, the low-lead brass ingot produced according to the formula and manufacturing technique is suitable for gravity casting of hot-water heating bathroom accessories, and has excellent casting, machining, polishing and electroplating properties; the proportioning and manufacturing technique is reasonable and low in cost; and, the brass ingot has the advantages of high machinability and environmental protection.

Description

Technical field [0001] The invention relates to a metal, in particular to a low-lead environment-friendly brass alloy ingot special for gravity casting and a manufacturing process thereof. Background technique [0002] Plumbing hardware brass casting production process: brass ingot→casting→machining→polishing→electroplating; currently, the raw materials (brass ingot) used in plumbing hardware industry castings do not have a fixed composition (brand) requirement, and each casting manufacturer shall comply with it The experience requires the formula, and the technical capabilities of the plumbing manufacturers are uneven, and there is no universal and feasible solution for the formula of the raw material (brass ingot), which directly affects the processing and use performance of the brass casting. Summary of the invention [0003] In order to solve the above shortcomings, the present invention provides a special low-lead environmentally friendly brass alloy ingot for gravity casting...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22C1/06C22C1/02
Inventor 阮媛清
Owner 鹤山市金益铜业有限公司
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