Preparation method of anti-dezincification lead-free bismuth arsenic brass pipe
A zinc-lead-free bismuth-arsenic brass and copper tube technology is applied in the field of preparation of dezincification-resistant lead-free bismuth-arsenic brass tubes, which can solve the problems of weakening the dezincification corrosion resistance of duplex brass, and improve the dezincification resistance. The effect of zinc corrosion performance, improving element absorption rate and saving production cost
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[0026] Example 1:
[0027] A kind of anti-dezincification lead-free bismuth arsenic brass, is characterized in that: is made up of the raw material of following mass percent:
[0028] 61% of Cu, 0.5% of Bi, 0.07% of As, 0.5% of Al, 0.08% of Sn, 0.06% of Pb, 37.75% of Zn, and 0.04% of the total amount of impurities.
[0029] A preparation method of a dezincification-resistant lead-free bismuth-arsenic brass tube, comprising the steps of casting the above-mentioned mass percentage of brass liquid into copper ingots → extruding into copper tube blanks → stretching → annealing → finished copper tube inspection → finished product The step of copper tube storage; wherein, the step of inducing and casting copper ingots includes:
[0030] 1) First add 150kg of pure red copper rice in the power frequency furnace with core. The total amount of pure red copper rice added in the power frequency furnace is 7.5% of the total raw materials. When it is in a semi-molten state, press the prehe...
Example Embodiment
[0046] Embodiment 2:
[0047] An anti-dezincification lead-free bismuth arsenic brass is composed of the following raw materials by mass percentage: Cu62%, Bi0.7%, As0.1%, Al0.7%, Sn0.15%, Pb0.09%, Zn36 .12% and total 0.14% impurities.
[0048] A preparation method of a dezincification-resistant lead-free bismuth-arsenic brass tube, comprising the steps of casting the above-mentioned mass percentage of brass liquid into copper ingots → extruding into copper tube blanks → stretching → annealing → finished copper tube inspection → finished product The step of copper tube storage; wherein, the step of inducing and casting copper ingots includes:
[0049] 1) First add 200kg of pure red copper rice in the power frequency furnace with core. The total amount of pure red copper rice added in the power frequency furnace is 10% of the total raw materials. When it is in a semi-molten state, press the preheated rice into it. 0.15% tin ingots, 0.7% bismuth ingots and 0.7% aluminum ingots...
Example Embodiment
[0060] Embodiment three:
[0061] An anti-dezincification lead-free bismuth-arsenic brass is composed of the following raw materials by mass percentage: Cu63%, Bi0.9%, As0.12%, Al0.8%, Sn0.24%, Pb0.02%, Zn34 .84% and total 0.08% impurities.
[0062]A preparation method of a dezincification-resistant lead-free bismuth-arsenic brass tube, comprising the steps of casting the above-mentioned mass percentage of brass liquid into copper ingots → extruding into copper tube blanks → stretching → annealing → finished copper tube inspection → finished product The step of copper tube storage; wherein, the step of inducing and casting copper ingots includes:
[0063] 1) First add 300kg of pure red copper rice into the power frequency furnace with core. The total amount of pure red copper rice added in the power frequency furnace is 15% of the total raw materials. When it is in a semi-molten state, press the preheated rice into it. 0.24% tin ingots, 0.9% bismuth ingots and 0.8% aluminum ...
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