Method for manufacturing hard alloy by 3D printing
A cemented carbide, 3D printing technology, applied in the field of 3D printing, to achieve the effect of high dimensional accuracy, saving manufacturing costs, and expanding the scope of application
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Example Embodiment
[0028] Example 1
[0029] Put WC powder and Co powder, paraffin wax and polyethylene into the ball mill barrel, where the content of organic binder in all materials is 55vol.%, the weight ratio of paraffin wax to polyethylene is 28:72, and alcohol is added for ball milling. The powder and the organic binder are wet-milled and mixed to obtain a slurry; the slurry is spray-dried and granulated to obtain a granular mixture; the mixture is extruded into a wire; the wire is loaded into the fuse deposition method A 3D printer is printed and formed to obtain a green body; the green body is dewaxed and sintered to obtain a final product.
Example Embodiment
[0030] Example 2
[0031] Put WC powder, Co powder, paraffin wax and polypropylene into the ball mill barrel, in which the content of organic binder in all materials is 40vol.%, the weight ratio of paraffin wax to polyethylene is 38:62, and alcohol is added for ball milling. The powder and the organic binder are wet-milled and mixed to obtain a slurry; the slurry is spray-dried and granulated to obtain a granular mixture; the mixture is extruded into a wire; the wire is loaded into the fuse deposition method A 3D printer is printed and formed to obtain a green body; the green body is dewaxed and sintered to obtain a final product.
Example Embodiment
[0032] Example 3
[0033] The WC powder and Co powder, as well as paraffin, polyethylene glycol, and polyethylene are charged into the ball mill barrel. The content of organic binder in all materials is 50vol.%, and the weight ratio of paraffin, polyethylene glycol and polyethylene is 30. : 25:45, and add alcohol for ball milling, wet-grind and mix the raw material powder with the organic binder to obtain a slurry; spray-dry and granulate the slurry to obtain a granular mixture; extrude the mixture into a wire The wire is loaded into a fuse deposition method 3D printer to print and form a green body; the green body is dewaxed and sintered to obtain a final product.
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