Preparation method of titanium-based composite material automobile engine air valve
A technology of titanium-based composite materials and automobile engines, which is applied in the field of automobile engines, can solve the problems of difficulty in meeting the low-cost requirements of the automobile industry, high energy consumption in smelting and high-temperature forging, and high cost of titanium alloy parts, and achieve low processing costs and high composition The effect of flexible adjustment and short production cycle
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Embodiment 1
[0037] A method for preparing a titanium-based composite automobile engine valve, comprising the following steps:
[0038] (1) Prepare titanium-based composite materials by powder metallurgy; among them, the raw materials of titanium-based composite materials are calculated by mass percentage, Ti is 82%, Al is 6%, Sn is 2%, Zr is 4%, Mo 2 C is 6%, Ti is hydrodehydrogenated Ti powder, the average particle size is 75 μm, and the mass ratio of oxygen content is less than 0.2%; the average particle size of Al, Sn, Zr is 45 μm, Mo 2 The average particle size of C is 5 μm; the specific steps of preparation are:
[0039] 1. Combine Ti, Al, Sn, Zr and Mo 2 C powder is mixed in proportion by using a high-efficiency V-type mixer. During the mixing process, argon protection is provided, the control speed is 20r / min, and the mixing time is 8h;
[0040] 2. Put the mixture into a rubber tube with a diameter of 125mm, press it with cold isostatic pressing after shaking, control the cold is...
Embodiment 2
[0050] A method for preparing a titanium-based composite automobile engine valve, comprising the following steps:
[0051] (1) Prepare titanium-based composite materials by powder metallurgy; among them, the raw materials of titanium-based composite materials are calculated by mass percentage, Ti is 88%, Al is 4%, Sn is 1%, Zr is 3%, Mo 2 C is 4%, Ti is hydrodehydrogenated Ti powder, the average particle size is 75 μm, and the oxygen content mass ratio is less than 0.2%; the average particle size of Al, Sn, Zr is 45 μm, Mo 2 The average particle size of C is 5 μm; the specific steps of preparation are:
[0052] 1. Combine Ti, Al, Sn, Zr and Mo 2 C powder is mixed in proportion by using a high-efficiency V-type mixer. During the mixing process, argon protection is provided, the control speed is 20r / min, and the mixing time is 8h;
[0053] 2. Put the mixture into a rubber tube with a diameter of 125mm, press it with cold isostatic pressing after shaking, control the cold isost...
Embodiment 3
[0061] A method for preparing a titanium-based composite automobile engine valve, comprising the following steps:
[0062] (1) Prepare titanium-based composite materials by powder metallurgy; among them, the raw materials of titanium-based composite materials are calculated by mass percentage, Ti is 85%, Al is 6%, Sn is 2%, Zr is 5%, Mo 2 C is 2%, Ti is hydrodehydrogenated Ti powder, the average particle size is 45 μm, and the mass ratio of oxygen content is less than 0.3%; the average particle size of Al, Sn, Zr is 45 μm, Mo 2 The average particle size of C is 5 μm; the specific steps of preparation are:
[0063] 1. Combine Ti, Al, Sn, Zr and Mo 2 C powder is mixed in proportion by using a high-efficiency V-type mixer. During the mixing process, argon protection is provided, the control speed is 20r / min, and the mixing time is 8h;
[0064] 2. Put the mixture into a rubber tube with a diameter of 125mm, press it with cold isostatic pressing after shaking, control the cold isos...
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