Preparation method of CuSn10 powder with low bulk density

The invention discloses a preparation method of CuSn10 powder with low bulk density. The method is characterized by comprising the following steps: selecting pure copper powder prepared by a water atomization method, wherein the granularity of the water atomization pure copper powder is -200 meshes; selecting copper-tin alloy powder prepared by a water atomization method, wherein the granularity of the copper-tin alloy powder is -200 meshes, and the tin content is greater than 10-30%; mixing the pure copper powder and the copper-tin alloy powder according to a proportion, wherein the proportion of the copper to the copper-tin alloy powder is selected to be larger than 0-2.0 times according to the tin content of the copper-tin alloy powder; putting the mixed powder into a reduction furnaceat a reduction temperature of 400-700 DEG C; and crushing and screening the sintered powder, and adjusting the particle size distribution to obtain finished powder. The formed product is stable in performance and good in comp