The invention discloses a high-specific-gravity
tungsten-based
alloy formation method based on pre-alloyed
powder. The high-specific-gravity
tungsten-based
alloy formation method based on the pre-alloyed
powder comprises the steps that firstly, according to the designed ingredients and proportion of the high-specific-gravity
tungsten-based
alloy, material mixing, pressing,
vacuum sintering and
forging machining are sequentially conducted, then a tungsten-based alloy rod is obtained, and pre-alloyed
powder is obtained through a
plasma-rotating
electrode powder manufacturing method; secondly, athree-dimensional model of the high-specific-gravity tungsten-based alloy is established,
slicing and designing are conducted, and then slice
layers and scanning data are obtained; thirdly, with the pre-alloyed powder as the
raw material, according to the slice
layers and the scanning data, a
powder bed type
electron beam additive manufacturing forming device is adopted to form the high-specific-gravity tungsten-based alloy. According to the high-specific-gravity tungsten-based alloy formation method based on the pre-alloyed powder, by utilizing the different melting points between tungsten and other elements in the high-specific-gravity tungsten-based alloy, the pre-alloyed powder with tungsten powder particles being wrapped inside low-melting-point element
solid solution is prepared, sothat the shells of the pre-alloyed powder are easy to melt and adhere to one another for formation, and therefore the formation difficulty of the pre-alloyed powder is lowered; and with the pre-alloyed powder as the
raw material, preparation of the high-specific-gravity tungsten-based alloy is achieved.