Thermal fatigue resisting and high performance hot working die steel and manufacturing process thereof
A technology for hot work die steel and thermal fatigue resistance, which is applied in the field of thermal fatigue resistance and high performance hot work die steel and its manufacturing process. problem, to achieve the effect of excellent hardenability
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[0049] Example 1
[0050] The matrix of thermal fatigue resistant high performance hot work die steel is composed of the following mass percentage components: C0.30%, Si0.30%, Mn0.60%, Cr4.00%, Mo1.80%, W0.70%, V0.50%, P0.003%, S0.01%, Nb0.12%; the rest is Fe.
[0051] A manufacturing process of thermal fatigue resistant high performance hot work die steel has the following steps:
[0052] Step A. Smelting: smelt in an electric arc furnace according to the above-mentioned composition. The smelting temperature is greater than 1500℃, and cast into Ф400mm~Ф450mm steel ingots and air-cooled; the cast steel ingots are placed as consumable electrodes in the electroslag remelting device During electroslag remelting, the slagging voltage is 56~62V, the current is 3000~5000A, the electrical system voltage is 57~59V, the current is 11000~12000A, the capping voltage is 57~59V, and the electroslag is remelted to 1000Kg for 35~50 minutes. ~15000Kg steel ingot;
[0053] Step B. High temperature d...
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[0059] Example 2
[0060] Thermal fatigue resistant high performance hot work die steel matrix is composed of the following components by mass percentage: C0.25%, Si0.35%, Mn0.70%, Cr4.00%, Mo1.80%, W0.60%, V0.40%, P0.01%, S0.003%, Nb0.10%; the rest is Fe.
[0061] A manufacturing process of thermal fatigue resistant high performance hot work die steel has the following steps:
[0062] Step A. Smelting: smelt in an electric arc furnace according to the above-mentioned composition. The smelting temperature is greater than 1500°C, cast into a Ф400mm~Ф450mm steel ingot and air-cooled; the cast steel ingot is placed as a consumable electrode in the electroslag remelting device During electroslag remelting, the slagging voltage is 56~62V, the current is 3000~5000A, the electrical system voltage is 57~59V, the current is 11000~12000A, the capping voltage is 57~59V, and the electroslag is remelted to 1000Kg. ~15000Kg steel ingot;
[0063] Step B. High temperature diffusion heat treatment...
Example Embodiment
[0069] Example 3
[0070] Thermal fatigue resistant high performance hot work die steel matrix is composed of the following components by mass percentage: C0.15%, Si0.32%, Mn0.50%, Cr4.00%, Mo1.50%, W0.50%, V0.60%, P0.01%, S0.01%, Nb0.10%; the rest is Fe.
[0071] A manufacturing process of thermal fatigue resistant high performance hot work die steel has the following steps:
[0072] Step A. Smelting: smelt in an electric arc furnace according to the above-mentioned composition. The smelting temperature is greater than 1500°C, and cast into a Ф400mm~Ф450mm steel ingot and air-cooled; the cast steel ingot is placed as a consumable electrode in the electroslag remelting device During electroslag remelting, the slagging voltage is 56~62V, the current is 3000~5000A, the electrical system voltage is 57~59V, the current is 11000~12000A, the capping voltage is 57~59V, and the electroslag is remelted to 1000Kg. ~15000Kg steel ingot;
[0073] Step B. High temperature diffusion heat treatm...
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