Copper-chromium alloy end ring prepared through cold spraying forming and preparation method of copper-chromium alloy end ring
A copper-chromium alloy, cold spraying technology, applied in coatings, furnace types, manufacturing tools, etc., can solve the problems of poor electrical conductivity of motor end rings, complex end ring process, low production efficiency, etc., and achieve forming dense pores. The effect of low rate, shortened process flow and low scrap rate
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Embodiment 1
[0040] Such as figure 1 A copper-chromium alloy end ring prepared by cold spraying is shown, including a central base 1, a first metal layer 2 arranged on the central base for increasing electrical conductivity, and a second metal layer 3 for increasing strength ;
[0041] The central base 1 is a metal ring in the shape of a circular tube;
[0042] Both the first metal layer 2 and the second metal layer 3 are arranged on the side wall of the central substrate 1; the first metal layer 2 includes 6 layers of elemental metal layers arranged at intervals; the second metal layer 3 includes 6 layers of alloy metals arranged at intervals layer;
[0043] The single metal layer of the first metal layer 2 and the alloy metal layer of the second metal layer 3 are alternately stacked around the center line of the central base 1 and arranged outside the central base 1 .
[0044] The metal ring is a motor silicon steel ring; the single metal layer is 6 layers of copper layers with the sa...
Embodiment 2
[0046] A method for a copper-chromium alloy end ring prepared by cold spraying, comprising the following steps:
[0047] Step 1: Prepare materials
[0048]Prepare a motor silicon steel ring with an outer diameter of 60mm and a wall thickness of 2mm, and prepare pure copper powder and CuCr alloy powder respectively by vacuum induction gas atomization technology, and sieve the prepared pure copper powder and CuCr alloy powder respectively;
[0049] Prepare pure copper powder with an average particle size of 10 μm, an oxygen content of 0.025%, and a nitrogen content of 0.003% for use;
[0050] Prepare CuCr alloy powder with a Cr element content of 0.1%, an O element content of 0.008%, an N element content of 0.001%, the balance being Cu, and an average particle size of 10 μm;
[0051] Step 2: Alternate layered spray molding
[0052] First, add the prepared pure copper powder and CuCr alloy powder to the cold spraying device; at the same time, fix the prepared silicon steel ring...
Embodiment 3
[0061] A method for a copper-chromium alloy end ring prepared by cold spraying, comprising the following steps:
[0062] Step 1: Prepare materials
[0063] Prepare a motor silicon steel ring with an outer diameter of 180mm and a wall thickness of 4mm, and prepare pure copper powder and CuCr alloy powder respectively by vacuum induction gas atomization technology, and sieve the prepared pure copper powder and CuCr alloy powder respectively;
[0064] Prepare pure copper powder with an average particle size of 60 μm, an oxygen content of 0.035%, and a nitrogen content of 0.004% for use;
[0065] Prepare CuCr alloy powder with a Cr element content of 1.5%, an O element content of 0.04%, an N element content of 0.004%, the balance being Cu, and an average particle size of 60 μm;
[0066] Step 2: Alternate layered spray molding
[0067] First, add the prepared pure copper powder and CuCr alloy powder to the cold spraying device; at the same time, fix the prepared silicon steel rin...
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