Tool steel material for blade and preparation method thereof
A tool steel and blade technology, applied in the field of tool steel materials for blades and its preparation, can solve problems such as unsatisfactory friction resistance, and achieve the effects of improving hydrogen corrosion resistance, high hardness, strong friction resistance and corrosion resistance
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Embodiment 1
[0040] Step1: According to parts by weight, weigh out 83.07 parts of iron, 1.5 parts of carbon, 0.25 parts of silicon, 1.5 parts of manganese, 7.4 parts of chromium, 0.35 parts of nickel, 0.2 parts of molybdenum, 0.1 parts of titanium, 0.02 parts Of vanadium, 4.4 parts of tungsten, 0.8 parts of aluminum, 0.06 parts of rare earth elements, 0.05 parts of niobium;
[0041] Step2: Add each component to a roller ball mill, and perform mixing ball milling for 70h at a ball-to-material weight ratio of 8:1 and a speed of 20rad / min to prepare a powder mixture;
[0042] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 150MPa, and the holding time is 1 min;
[0043] Step4: Use hot-press sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel body for blade after cooling. During sintering, the compact is heated to 1250°C and kept for 90 minutes, and the sintering pressure is 40MPa;
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Embodiment 2
[0050] Step1: According to parts by weight, weigh 82.878 parts of iron, 1.2 parts of carbon, 0.26 parts of silicon, 1.6 parts of manganese, 7.6 parts of chromium, 0.4 parts of nickel, 0.25 parts of molybdenum, 0.11 parts of titanium, and 0.03 parts Of vanadium, 4.3 parts of tungsten, 0.85 parts of aluminum, 0.062 parts of rare earth elements, 0.06 parts of niobium;
[0051] Step2: Add each component to a roller ball mill, and carry out a 75h mixing ball mill with a ball-to-material weight ratio of 9:1 and a speed of 25rad / min to prepare a powder mixture;
[0052] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 200MPa, and the holding time is 3min;
[0053] Step4: Adopt hot-press sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel blank for blade after cooling. During sintering, the compact is heated to 1200℃ and kept for 70min, and the sintering pressure is 10MPa;
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Embodiment 3
[0060] Step1: According to parts by weight, weigh 82.276 parts of iron, 1 part of carbon, 0.27 parts of silicon, 1.7 parts of manganese, 7.5 parts of chromium, 0.45 parts of nickel, 0.3 parts of molybdenum, 0.12 parts of titanium, and 0.05 parts Of vanadium, 4.7 parts of tungsten, 0.9 parts of aluminum, 0.064 parts of rare earth elements, 0.07 parts of niobium;
[0061] Step2: Add each component to a roller ball mill, and perform a mixing ball mill for 80 hours at a weight ratio of ball to material of 10:1 and a speed of 30rad / min to prepare a powder mixture;
[0062] Step3: The powder mixture is made into compacts by cold isostatic pressing, the cold isostatic pressing pressure is 250MPa, and the holding time is 5min;
[0063] Step4: Use hot pressing sintering technology to sinter the above-mentioned compact under argon gas, and obtain the tool steel blank for blade after cooling. During sintering, the compact is heated to 1150℃ and kept for 50min, and the sintering pressure is 20MP...
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