CoCrMo powder hot isostatic pressing forming method based on PREP technique
A technology of hot isostatic pressing and process, which is applied in the field of static pressing, can solve the problems of difficult to meet the SLM forming process and low yield of fine powder, and achieve the goal of improving material utilization, improving various performances, and reducing forming costs Effect
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Embodiment 1
[0018] The hot isostatic pressing method of CoCrMo powder based on PREP process includes the following steps:
[0019] 1) CoCrMo alloy powder was prepared by PREP process, and the particle size was D50=100μm obtained by classification;
[0020] 2) The CoCrMo alloy powder is machined into a sheath with 304 stainless steel, cleaned with acetone, annealed at high temperature, and then checked for leaks;
[0021] 3) The CoCrMo alloy powder after leak detection is formed by hot isostatic pressing equipment to obtain a formed part, the pressure holding temperature is 1200°C, the pressure is 130MPa, the heating rate is 15°C / min, and the cooling rate is 5°C / min;
[0022] 4) Use wire cutting samples on the formed parts in step 3) to test the tensile properties at room temperature.
[0023]
Embodiment 2
[0025] The hot isostatic pressing method of CoCrMo powder based on PREP process includes the following steps:
[0026] 1) CoCrMo alloy powder was prepared by PREP process, and the particle size was D50=50μm obtained by classification;
[0027] 2) The CoCrMo alloy powder is machined into a sheath with 304 stainless steel, cleaned with acetone, annealed at high temperature, and then checked for leaks;
[0028] 3) The CoCrMo alloy powder after leak detection is formed by hot isostatic pressing equipment to obtain a formed part, the pressure holding temperature is 1180°C, the pressure is 100MPa, the heating rate is 12°C / min, and the cooling rate is 8°C / min;
[0029] 4) Use wire cutting samples on the formed parts in step 3) to test the tensile properties at room temperature.
[0030]
Embodiment 3
[0032] The hot isostatic pressing method of CoCrMo powder based on PREP process includes the following steps:
[0033] 1) CoCrMo alloy powder was prepared by PREP process, and the particle size was D50=150μm obtained by classification;
[0034] 2) The CoCrMo alloy powder is machined into a sheath with 316L stainless steel, cleaned with acetone, annealed at high temperature, and then checked for leaks;
[0035] 3) The CoCrMo alloy powder after leak detection is formed by hot isostatic pressing equipment to obtain a formed part, the pressure holding temperature is 1220°C, the pressure is 145MPa, the heating rate is 10°C / min, and the cooling rate is 2°C / min;
[0036] 4) Use wire cutting samples on the formed parts in step 3) to test the tensile properties at room temperature.
[0037] .
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