WSTi2815SC flame-retardant titanium alloy and preparation method thereof
A technology of flame retardant titanium alloy and sponge titanium, applied in the preparation of the titanium alloy, in the field of WSTi2815SC flame retardant titanium alloy, can solve the problems of non-frit, easy to produce segregation, unable to ensure the uniformity of alloy composition, etc., to achieve uniform composition , the effect of improving the uniformity of ingredients
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[0028] The preparation method of the above-mentioned flame-retardant titanium alloy comprises the following steps:
[0029] Step 1: Use granular vanadium-chromium alloy with a vanadium content of 37.5%±0.5%, powdered titanium-silicon alloy with a silicon content of 50%±0.5%, carbon powder, and small particle sponge titanium with a particle size of 0.83 to 12.7mm. A single electrode is mixed and pressed into an electrode block with a hydraulic press. The pressing pressure is 20-35MPa, and the pressing time is 4-10 seconds; the four raw materials of vanadium-chromium alloy, titanium-silicon alloy, carbon powder, and sponge titanium are in accordance with V24%-32% , Cr 12% ~ 18%, Si 0.1% ~ 0.6%, C 0.05% ~ 0.14% ingredients proportioned and mixed uniformly;
[0030] Step 2: Clamp the electrode block obtained in step 1 with a clamp, and use a non-tungsten argon shielded plasma box to weld multiple electrode blocks into one electrode. Since the shape of the crucible is cylindrical, ...
Embodiment 1
[0039] Embodiment 1: The finished ingot specification is φ520mm
[0040] Step 1: Use granular vanadium-chromium alloy with a vanadium content of 37.5%, powdered titanium-silicon alloy with a silicon content of 50%, carbon powder, and small particle sponge titanium with a particle size of 0.83mm for monolithic electrode mixing. The four raw materials of alloy, titanium-silicon alloy, carbon powder, and titanium sponge are mixed according to the proportion of V 24%, Cr 18%, Si 0.1%, C 0.14%, and the balance is Ti and unavoidable impurities. A large hydraulic press is pressed into an electrode block, the pressing pressure is 20MPa, and the pressing time is 10 seconds;
[0041] Step 2: Clamp the electrode block obtained in step 1 with a fixture, and use a non-tungsten argon shielded plasma box to weld the electrode block into a cylindrical electrode; the solder joints are required to be silver gray or light yellow to prevent solder joint oxidation and high Metallurgical defects suc...
Embodiment 2
[0046] Embodiment 2: The specification of the finished ingot is φ560mm
[0047] Step 1: Use granular vanadium-chromium alloy with a vanadium content of 38%, powdered titanium-silicon alloy with a silicon content of 50.5%, carbon powder, and small particle sponge titanium with a particle size of 12.7mm for monolithic electrode mixing. The four raw materials of alloy, titanium-silicon alloy, carbon powder, and titanium sponge are mixed according to the proportion of V 32%, Cr 15%, Si 0.6%, C 0.05%, and the balance is Ti and unavoidable impurities. A large hydraulic press is pressed into an electrode block, the pressing pressure is 28MPa, and the pressing time is 7 seconds;
[0048] Step 2: Clamp the electrode block obtained in step 1 with a fixture, and use a non-tungsten argon shielded plasma box to weld the electrode block into a cylindrical electrode; the solder joints are required to be silver gray or light yellow to prevent solder joint oxidation and high Metallurgical def...
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