A kind of preparation method of titanium or titanium alloy material
A technology of titanium alloys and alloying elements, which is applied in the field of preparation of titanium or titanium alloy materials, can solve problems affecting performance, metal plastic damage, etc., and achieve the effects of reducing production and processing costs, reducing oxygen content, and facilitating the development of industrialization
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Embodiment 1
[0018] Step 1, powder mixing: mix 10kg titanium powder with 50g CaH 2 The powders are mixed under a protective atmosphere.
[0019] In this example, CaH 2 The percentage by weight ratio of powder to titanium powder is 0.5%.
[0020] In this embodiment, the oxygen content of the titanium powder is about 800 ppm. Preferably, the titanium powder is prepared by hydrodehydrogenation.
[0021] In this example, the average particle size of titanium powder is about 10 microns, CaH 2 The average particle size of the powder is about 5 microns.
[0022] Preferably, in this embodiment, the purity of the titanium powder is about 99.5%. Preferably, in this embodiment, CaH 2 The powder is about 99% pure.
[0023] In this embodiment, a ball mill mixer is used for mixing. Preferably, titanium powder and CaH 2 The powder is mixed in a ball mill mixer (using stainless steel balls), the ball-to-material ratio is 2:1; preferably, the mixing time is about 10 hours.
[0024] The protective...
Embodiment 2
[0031] Step 1, powder mixing: mix 16.5kg of powder containing titanium and alloying elements with 16.5g of CaH 2 The powders are mixed under a protective atmosphere; wherein, in the powder containing titanium and alloy elements, the titanium accounts for more than 75% of the weight of the powder.
[0032] In this example, CaH 2 The percentage by weight of powder to powder containing titanium element and alloying element is about 0.1%.
[0033] In one embodiment of the present invention, the powder containing titanium and alloying elements, in addition to titanium powder, also contains pure element powders of one or more alloying elements and / or alloy powders of multiple alloying elements.
[0034] Preferably, the alloying elements are selected from the group consisting of Al, V, Sn, Pd, Fe, Co, Cr, Mo, Ni, Nb, Zr, Si, Ru. In this embodiment, the powder containing titanium element and alloying element contains not only titanium powder, but also pure element powder of Al and a...
Embodiment 3
[0045] Step 1, powder mixing: 15kg of hydrogenated dehydrogenation titanium powder with an average particle size of 1 micron and a purity of 99.7% and an oxygen content of 1500ppm and CaH with an average particle size of 1 micron and a purity of 99.8%2 Put 15 grams of powder into a ball mill mixer and mix for 5 hours. Stainless steel balls are used with a ball-to-material ratio of 5:1. During the mixing process, nitrogen with a purity of 99.98% is used as a protective atmosphere.
[0046] Step 2, forming: put the mixed powder obtained in the powder mixing step into a mold, use nitrogen with a purity of 99.98% as a protective atmosphere during the mold loading process, cold isostatic pressing under a pressure of 200MPa, and a holding time of 8 minutes to obtain a green body , The relative density of the compact is 82%.
[0047] Step 3, sintering: put the cold isostatic pressed green body obtained in step 2 into a vacuum furnace, and sinter at a temperature of 1300 degrees Celsiu...
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Abstract
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