A kind of sic/m2 powder high-speed steel composite material and preparation method thereof
A technology of composite materials and high-speed steel, which is applied in the field of SiC/M2 powder high-speed steel composite materials and its preparation, can solve problems such as inability to achieve 100% alloying, metal powder surface oxidation, long ball milling time, etc., and achieve the elimination of ball milling alloys process, realize alloying, reduce cost and density
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Embodiment 1
[0037] A method for preparing SiC / M2 high-speed steel composite material, comprising the following steps and process conditions:
[0038] Step 1: SiC powder surface coating treatment
[0039] Select SiC powder with a particle size of ≤1 μm, wherein the volume fraction of SiC powder less than 200nm is 10%, and then chrome-plate the particle surface;
[0040] Step 2: Pre-alloyed SiC / M2 high-speed steel composite powder preparation
[0041] The end temperature of vacuum smelting M2 high speed steel is 1640°C, the atomization temperature of molten steel is 1590°C; the composition and mass percentage of molten steel: C0.85%, Si0.35%, Mn0.28%, W5.12%, Mo5.03 %, Cr3.85%, V1.99%, the balance Fe, containing unavoidable impurity elements;
[0042] Put the coated SiC powder in step 1 into a separate sending tank, use argon to transport it to the atomizer, and form a gas-powder mixed atomization medium with the atomization gas (argon), and then atomize molten steel. SiC / M2 high speed s...
Embodiment 2
[0052] A preparation method of SiC / M2 powder high-speed steel composite material, specifically comprising:
[0053] Step 1: SiC powder surface coating treatment
[0054] Select SiC powder with a particle size of ≤1 μm, wherein the volume fraction of SiC powder less than 200nm is 14%, and then chrome-plate the particle surface;
[0055] Step 2: Pre-alloyed SiC / M2 high-speed steel composite powder preparation
[0056] The end temperature of vacuum smelting M2 high speed steel is 1640°C, the atomization temperature of molten steel is 1590°C; the composition and mass percentage of molten steel: C0.85%, Si0.35%, Mn0.28%, W5.12%, Mo5.03 %, Cr3.85%, V1.99%, the balance Fe, containing unavoidable impurity elements;
[0057] Put the coated SiC powder in step 1 into a separate sending tank, use argon to transport it to the atomizer, and form a gas-powder mixed atomization medium with the atomization gas (argon) (the powder is evenly dispersed in it) , and then atomized molten steel t...
Embodiment 3
[0066] A preparation method of SiC / M2 powder high-speed steel composite material, specifically comprising:
[0067] Step 1: SiC powder surface coating treatment
[0068] Select SiC powder with a particle size of ≤1 μm, wherein the volume fraction of SiC powder less than 200nm is 20%, and then chrome-plate the particle surface;
[0069] Step 2: Pre-alloyed SiC / M2 high-speed steel composite powder preparation
[0070] The end temperature of vacuum smelting M2 high speed steel is 1640°C, the atomization temperature of molten steel is 1590°C; the composition and mass percentage of molten steel: C0.85%, Si0.35%, Mn0.28%, W5.12%, Mo5.03 %, Cr3.85%, V1.99%, the balance Fe, containing unavoidable impurity elements;
[0071] Put the coated SiC powder in step 1 into a separate sending tank, use argon to transport it to the atomizer, and form a gas-powder mixed atomization medium with the atomization gas (argon) (the powder is evenly dispersed in it) , and then atomized molten steel t...
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