A kind of copper alloy and preparation method thereof
A copper alloy, mass percentage technology, applied in the field of high-strength and high-conductivity Cu-Ni-Co-Mn-P copper alloy and its preparation, achieves good softening resistance and stress relaxation resistance, excellent electrical conductivity, reduced lattice Distortion effect
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[0040] In one embodiment of the present application, the above-mentioned preparation method comprises the following steps:
[0041] 1) Melting and casting: first melt Cu, Ni, Co and Mn under the condition of covering calcined charcoal and electrode graphite powder, then add copper-phosphorus master alloy, then remove the slag, then raise the temperature of the melt to 1230±10°C, and then Degassing, then control the temperature of the melt at 1220±10°C for sampling analysis, then adjust the composition, and then control the temperature of the melt at 1210±10°C for drawing casting;
[0042] 2) Hot rolling: the hot rolling temperature is 900℃~950℃, and the holding time is 6h~8h;
[0043] 3) Face milling: the milling amount of the upper knife is 0.5mm to 1.0mm, and the milling amount of the lower knife is 0.5mm to 1.0mm;
[0044] 4) Rough rolling: the reduction rate of rough rolling is 80% to 90%;
[0045] 5) Bell jar annealing: the annealing temperature is 500°C-600°C, and the ho...
Embodiment 1
[0056] A kind of copper alloy, its composition and its content are shown in embodiment 1 in table 1.
[0057] The preparation method of above-mentioned copper alloy in the present embodiment 1, comprises the following steps:
[0058] 1) Melting and casting: the following raw materials are used for melting: electrolytic copper, pure nickel, pure cobalt, pure manganese, copper-phosphorus master alloy;
[0059] First melt Cu, Ni, Co and Mn under the condition of covering calcined charcoal and electrode graphite powder, then add copper-phosphorus master alloy, then remove the slag, then raise the temperature of the melt to 1235°C, then degas, and then put the molten The liquid temperature is controlled at 1225°C for sampling analysis, then the composition is adjusted, and then the melt temperature is controlled at 1215°C for drawing casting;
[0060] 2) Hot rolling: the hot rolling temperature is 900°C, and the holding time is 6h;
[0061] 3) Face milling: the milling amount of ...
Embodiment 2
[0072] A kind of copper alloy, its composition and its content are shown in the embodiment 2 in table 1.
[0073] The preparation method of above-mentioned copper alloy in the present embodiment 2, comprises the following steps:
[0074] 1) Melting and casting: the following raw materials are used for melting: electrolytic copper, pure nickel, pure cobalt, pure manganese, copper-phosphorus master alloy;
[0075] First melt Cu, Ni, Co and Mn under the condition of covering calcined charcoal and electrode graphite powder, then add copper-phosphorus master alloy, then remove the slag, then raise the temperature of the melt to 1230°C, then degas, and then put the molten The liquid temperature is controlled at 1230°C for sampling analysis, then the composition is adjusted, and then the melt temperature is controlled at 1215°C for drawing casting;
[0076] 2) Hot rolling: the hot rolling temperature is 920°C, and the holding time is 6h;
[0077] 3) Face milling: the milling amount...
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Abstract
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