A kind of bismuth brass alloy with good plasticity and corrosion resistance
A corrosion-resistant, bismuth-brass technology is applied in the formulation of brass alloys and their manufacture, and in the field of bismuth-brass alloy materials. Good, low cost, good overall performance
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Embodiment 1
[0014] A bismuth brass alloy with good plasticity and corrosion resistance, its composition and mass percentage are: Cu 58%, Bi 0.02%, Mg 0.02%, Zr 0.05%, La 0.02%, impurity element content < 0.5%, balance for Zn.
[0015] The preparation method of the above-mentioned bismuth brass alloy with good plasticity and good corrosion resistance is: according to the mass percentage of each component, use 10% (based on the weight sum of each raw material) bismuth-containing cutting brass old material, add elemental Mg, Zr , La, Cu and Zn, adjust the alloy content to the corresponding mass percentage, smelt at 1050-1100°C for 30 minutes, and use other components in the old bismuth brass used in smelting as impurities to obtain a bismuth brass alloy with good plasticity and corrosion resistance . The strength of the prepared brass alloy material exceeds 400 MPa, the hardness HB is 120, the elongation is greater than 20%, and the dezincification corrosion depth is 70 μm.
Embodiment 2
[0017] A bismuth brass alloy with good plasticity and corrosion resistance, its composition and mass percentage are: Cu 75%, Bi 2.5%, Mg 1.8%, Zr 1.5%, La 0.3%, impurity element content < 0.5%, balance for Zn.
[0018] The preparation method of the above-mentioned bismuth brass alloy with good plasticity and good corrosion resistance is: according to the mass percentage of each component, use 10% (based on the weight sum of each raw material) bismuth-containing cutting brass old material, add elemental Bi, Mg , Zr, La, Cu and Zn, adjust the alloy content to the corresponding mass percentage, smelt at 1050-1100°C for 30 minutes, and use other components in the old bismuth brass used in smelting as impurities to obtain bismuth yellow with good plasticity and corrosion resistance copper alloy. The strength of the prepared brass alloy material exceeds 400 MPa, the hardness HB is 120, the elongation is greater than 20%, and the dezincification corrosion depth is 80 μm.
Embodiment 3
[0020] A bismuth brass alloy with good plasticity and corrosion resistance, its composition and mass percentage are: Cu 58%, Bi 0.02%, Mg 0.02%, Zr 0.05%, La 0.02%, impurity element content < 0.5%, balance for Zn.
[0021] The preparation method of the above-mentioned bismuth brass alloy with good plasticity and corrosion resistance is as follows: according to the mass percentage of each component, use 50% (based on the weight sum of each raw material) bismuth-containing cutting brass old material, add elemental Bi, Mg , Zr, La, Cu and Zn, adjust the alloy content to the corresponding mass percentage, smelt at 1050-1100°C for 30 minutes, and use other components in the old bismuth brass used in smelting as impurities to obtain bismuth yellow with good plasticity and corrosion resistance copper alloy. The strength of the prepared brass alloy material exceeds 400 MPa, the hardness HB is 120, the elongation is greater than 18%, and the dezincification corrosion depth is 80 μm. ...
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