Electron beam selective melting forming method for pure tungsten metal parts
A technology for selective melting and metal parts, applied in the improvement of process efficiency, additive manufacturing, additive processing, etc., can solve the problems of limited density of tungsten metal parts, affecting forming efficiency, limited laser energy, etc., to improve the forming quality. , The effect of reducing material cost and improving utilization rate
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Embodiment 1
[0024] This embodiment includes the following steps:
[0025] Step 1. Use Pro / Engineer software to build a three-dimensional model of pure tungsten metal parts with a size of 10mm×10mm×10mm, and then use Build Assembler software to slice the three-dimensional model of pure tungsten metal parts along its height direction to obtain slice data. Then import the slice data into the electron beam selective melting forming equipment; the slice data includes contour data and graphic data of each slice section; the thickness of each layer of the slice processed by the slice is 30 μm;
[0026] Step 2: Put tungsten powder into the powder chamber of the electron beam selective melting forming equipment, and then vacuumize the forming cavity of the electron beam selective melting forming equipment to a vacuum degree of 0.5×10 -2 Pa; the shape of the tungsten powder is spherical, the mass purity is 99.95%, and the powder particle size is less than 30 μm;
[0027] Step 3, using electron bea...
Embodiment 2
[0036] This embodiment includes the following steps:
[0037] Step 1. Use Pro / Engineer software to build a three-dimensional model of pure tungsten metal parts with a size of 10mm×10mm×10mm, and then use Build Assembler software to slice the three-dimensional model of pure tungsten metal parts along its height direction to obtain slice data. Then import the slice data into the electron beam selective melting forming equipment; the slice data includes contour line data and graphic data of each slice section; the thickness of each slice processed by the slice is 100 μm;
[0038] Step 2: Put tungsten powder into the powder chamber of the electron beam selective melting forming equipment, and then vacuumize the forming cavity of the electron beam selective melting forming equipment to a vacuum degree of 1×10 -2Pa; the shape of the tungsten powder is nearly spherical, the mass purity is 99.9%, and the powder particle size is less than 100 μm;
[0039] Step 3, using electron beams ...
Embodiment 3
[0046] This embodiment includes the following steps:
[0047] Step 1. Use Pro / Engineer software to build a three-dimensional model of pure tungsten metal parts with a size of 10mm×10mm×10mm, and then use Build Assembler software to slice the three-dimensional model of pure tungsten metal parts along its height direction to obtain slice data. Then import the slice data into the electron beam selective melting forming equipment; the slice data includes contour line data and graphic data of each slice section; the thickness of each slice processed by the slice is 50 μm;
[0048] Step 2: Put tungsten powder into the powder chamber of the electron beam selective melting forming equipment, and then vacuumize the forming cavity of the electron beam selective melting forming equipment to a vacuum degree of 0.8×10 -2 Pa; the shape of the tungsten powder is spherical, the mass purity is 99.95%, and the powder particle size is less than 50 μm;
[0049] Step 3, using electron beams to pr...
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