Copper alloy die-casting die steel and manufacturing method thereof
A die-casting mold and copper alloy technology, which is applied in the field of copper alloy die-casting mold steel and its preparation, can solve the problems of high cost and little improvement in service life, and achieve the effects of improving strength and toughness, avoiding internal stress, and decreasing thermal strength
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[0041] Example 1
[0042] A copper alloy die-casting die steel with a chemical composition and weight percentage of 0.45wt% C, 0.11wt% Si, 13.7% Mn, 10.8wt% Cr, 3.36wt% Ni, 1.09wt% Cu, 0.12wt% B, 0.009wt% P, 0.013wt% S, the rest is Fe. The specific preparation steps are: weighing and measuring the low-carbon steel, ferrosilicon, ferrochrome, pure nickel, and pure copper that have been derusted and oily on the surface, and then placed in a vacuum induction electric furnace for molten steel smelting. After the charge is melted, graphite particles with a carbon content of 0.15wt% are immediately added for refining. The smelting temperature during the refining period is controlled at 1650℃, the vacuum degree is controlled at 5Pa, and the holding time is 60min; after the refining period, graphite particles recarburizer is used Adjust the carbon content; add ferroboron, and then increase the power to stir the molten steel for 1 min; add ferromanganese for 5 minutes and then take out t...
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[0044] Example 2
[0045] A copper alloy die-casting die steel, its chemical composition and weight percentage are 0.60wt% C, 1.15wt% Si, 9.71wt% Mn, 12.4wt% Cr, 5.56wt% Ni, 0.51wt% Cu, 0.22wt% B, 0.012wt% P, 0.013wt% S, the rest is Fe. The specific preparation steps are: weighing and measuring the low-carbon steel, ferrosilicon, ferrochrome, pure nickel, and pure copper that have been derusted and oily on the surface, and then placed in a vacuum induction electric furnace for molten steel smelting. After the charge is melted, add 0.05wt% graphite particles for refining immediately. The smelting temperature during the refining period is controlled at 1600℃, the vacuum degree is controlled at 10Pa, and the holding time is 30min; after the refining period, the carbon content is adjusted with graphite particles recarburizer ; Add ferroboron, then increase the power to stir the molten steel for 2 minutes; add ferromanganese for 3 minutes and then take it out; pour in argon before ta...
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[0047] Example 3
[0048] A copper alloy die-casting die steel whose chemical composition and weight percentage are 0.29wt% C, 0.11wt% Si, 6.71wt% Mn, 8.86wt% Cr, 8.06wt% Ni, 0.49wt% Cu, 0.75wt% B, 0.012wt% P, 0.010wt% S, and the rest is Fe. The specific preparation steps are: weighing and measuring the low-carbon steel, ferrosilicon, ferrochrome, pure nickel, and pure copper that have been derusted and oily on the surface, and then placed in a vacuum induction electric furnace for molten steel smelting. After the charge is melted, immediately add 0.1wt% graphite particles for refining. The smelting temperature during the refining period is controlled at 1700°C, the vacuum degree is controlled at 0.5Pa, and the holding time is 40min; after the refining period, the graphite particle recarburizer is used to adjust the carbon Content: Add ferroboron, then increase the power to stir the molten steel for 2min; add ferromanganese for 3min and then take it out; pour in argon before tak...
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