A kind of nickel-brass tape and preparation method thereof
A technology of nickel brass and copper strip, applied in the field of nickel brass strip and its preparation, can solve the problems of development requirements, nickel brass alloy corrosion resistance and wear resistance, etc., to improve internal quality and cold working performance Effects that are easy to implement and inexpensive to produce
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[0023] The present invention also provides a method for preparing the nickel-brass strip described in any one of the above, comprising the following steps:
[0024] 1) Melting and casting: medium frequency induction furnace is used for semi-continuous casting, phosphor copper alloy is used for deoxidation and degassing, casting is covered with dry borax, the melting temperature is 1200℃~1250℃, and the casting temperature is 1100℃~1130℃;
[0025] A slab is obtained, and the slab includes the following components in weight percentage: 67% to 73% of Cu, 2% to 4.5% of Ni, 0.003% to 0.015% of P, Pb≤0.01, Fe≤0.012%, and the remainder The amount is Zn and unavoidable impurities;
[0026] 2) Hot rolling: heat the slab obtained in step 1) at 800°C to 890°C, the holding time is 1h to 5h, hot rolling is water cooled, the final rolling temperature is 350°C to 550°C, and the total deformation is 80% to 96%, get 14mm ~ 20mm slab;
[0027] 3) Face milling: the slab obtained after step 2) i...
Embodiment 1
[0036] Nickel brass specification: 2.0×205mm thickness tolerance ±0.02mm as an example, including the following steps:
[0037] 1) Melting and casting: medium-frequency induction furnace is used for semi-continuous casting, copper and nickel are added to melt, then zinc is added, and phosphor-copper intermediate alloy is added after covering and slag removal, and the composition is fine-tuned; phosphor-copper alloy is used for deoxidation and degassing, and casting is covered with dry borax , the melting temperature is 1200°C, and the casting temperature is 1130°C; the slab specification is 210×400×6000mm; the slab is obtained, and the slab includes the following components by weight percentage: 67% Cu, 4.5% Ni , 0.003% P, Pb≤0.01, Fe≤0.012%, the balance is Zn and unavoidable impurities;
[0038] 2) Hot rolling: Heating the slab obtained in step 1) to 890°C in a walking furnace, holding time for 1h, hot rolling passes 210mm-180mm-145mm-102mm-70mm-48mm-35mm-26mm-20mm -16mm, ho...
Embodiment 2
[0045] Nickel brass specification: 0.4×205mm thickness tolerance ±0.01mm as an example, including the following steps:
[0046] 1) Melting and casting: medium-frequency induction furnace is used for semi-continuous casting, copper and nickel are added to melt, then zinc is added, and phosphor-copper intermediate alloy is added after covering and slag removal, and the composition is fine-tuned; phosphor-copper alloy is used for deoxidation and degassing, and casting is covered with dry borax , the melting temperature is 1230°C, and the casting temperature is 1120°C;
[0047] In the semi-continuous casting process, after forming the slab shell, the slab is led out of the crystallizer with the liquid melt contained in the slab, and then the slab containing the liquid melt is squeezed and deformed by rolling , the plate thickness deformation is 30mm;
[0048] The size of the slab is 180×400×6000mm;
[0049] A slab is obtained, the slab includes the following components in weight...
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