Powder injection molding method of titanium or titanium alloy powder and titanium or titanium alloy powder product
A technology of powder injection molding and titanium alloy powder, which is applied to the powder injection molding method of titanium or titanium alloy powder and the field of titanium or titanium alloy products, can solve the problems of poor activity and high cost of titanium products, and achieve the effect of improving the coating effect
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Embodiment 1
[0029] Using hydrogenated dehydrogenation titanium powder with a median particle size of 15.8 μm and an oxygen content of 0.13wt.% as raw material, the scanning electron microscope morphology photo is as follows figure 1 shown. Dissolve 0.8wt.% isopropyl tris(dioctyl pyrophosphate acyloxy) titanate (NDZ-201) and 1wt.% polystyrene (PS) in xylene organic solvent in sequence to form isopropyl A mixed solution with a concentration of 0.02 g / mL tris(dioctylpyrophosphate) titanate (NDZ-201) and a polystyrene (PS) concentration of 0.04 g / mL. Then the raw material powder was added to the prepared solution, sealed with high-purity inert gas protection, mechanically stirred for 0.4h and then ultrasonically treated for 0.6h to prepare a slurry with a solid-to-liquid ratio of 2.3g / mL. Take out the powder slurry prepared by coating, and pre-mix with low melting point components 3wt.% high-density polyethylene HDPE, 5wt.% acetic acid-vinyl acetate copolymer EVA and 7wt.% stearic acid SA at...
Embodiment 2
[0032]A hydrogenated dehydrogenation titanium alloy (TC4) powder with a median particle size of 18.7 μm and an oxygen content of 0.14 wt.% is used as a raw material. 0.5wt.% isopropoxy dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate (TCA-KTT2) and 1.5wt.% polystyrene (PS) were successively dissolved in toluene organic solvent , formulated with isopropoxy dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate (TCA-KTT2) concentration of 0.01g / mL, polystyrene (PS) concentration of 0.05g / mL mixture. Then the raw material powder was added to the prepared solution, sealed with high-purity inert gas protection, mechanically stirred for 0.5 h and then ultrasonically treated for 0.4 h to prepare a slurry with a solid-to-liquid ratio of 2.8 g / mL. Take out the powder slurry prepared by coating, and pre-mix with low melting point components 4wt.% HDPE, 5wt.% EVA and 6.5wt.% SA at a temperature of 140°C for 0.3h; then add high melting point components 83wt .% POM for final ...
Embodiment 3
[0035] The raw material is hydrogenated dehydrogenated titanium powder with a median particle size of 25.6 μm and an oxygen content of 0.12 wt.%. Dissolve 0.2wt.% isopropyl tris(dioctyl phosphate acyloxy) titanate (TMC-102) and 0.5wt.% polystyrene (PS) in xylene organic solvent in sequence to form isopropyl Tris (dioctyl phosphate acyloxy) titanate (TMC-102) concentration of 0.005g / mL, polystyrene (PS) concentration of 0.01g / mL mixed solution. Then the raw material powder was added to the prepared solution, sealed with high-purity inert gas protection, mechanically stirred for 0.6h and then ultrasonically treated for 0.6h to prepare a slurry with a solid-to-liquid ratio of 1.3g / mL. Take out the powder slurry prepared by coating, and pre-mix with low melting point components 7wt.% HDPE, 6wt.% EVA and 5.5wt.% SA at a temperature of 150°C for 0.4h; then add high melting point components 81wt .% POM for final mixing, temperature 185 ° C, time 0.3h. After the mixing is completed ...
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