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
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[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
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