H13 high-speed precision forging die steel and production method of steel ingot
A production method and technology of mold steel, which is applied in the field of alloy steel, can solve the problems of easy damage of the mold and low surface hardness
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Embodiment 1-5
[0022] Embodiments 1-5 provide a kind of H13 high-speed precision forging die steel and steel ingot respectively, calculated by weight percentage, including the composition shown in Table 1:
[0023] The rest is Fe and inevitable impurities.
[0024] Table 1 Components of Examples 1-5 (wt.%)
[0025] Example 1 Example 2 Example 3 Example 4 Example 5 C 0.4 0.4 0.39 0.38 0.37 Si 1.05 1.05 1.0 0.9 0.95 Mn 0.42 0.4 0.39 0.38 0.35 Cr 5.3 5.3 5.2 5.2 5.1 Mo 1.5 1.5 1.45 1.4 1.4 V 1 1 1 0.9 0.9 Ti 0.008 0.007 0.006 0.007 0.007 N 0.008 0.007 0.008 0.007 0.008 O 0.002 0.0018 0.0015 0.0018 0.0019 H 0.0002 0.0002 0.0002 0.0002 0.0002 Ni 0.2 0.18 0.16 0.17 2 Al 0.028 0.026 0.025 0.026 0.028 Cu 0.08 0.07 0.06 0.07 0.08 As 0.02 0.015 0.016 0.018 0.019 Sn 0.015 0.014 0.012 0.013 0.014 Sb 0.0015 0.0014 0.0012 0.0013 0.0014 ...
Embodiment 6
[0027] A method for producing an H13 high-speed precision forging die steel ingot, comprising the following steps:
[0028] S1: molten steel pretreatment, using KR method to pre-desulfurize molten steel to reduce the sulfur content to 0.01%;
[0029] S2: electric arc furnace smelting, adding molten steel, scrap steel and pig iron into the electric arc furnace for smelting, smelting until the carbon content is less than 0.60%, the phosphorus content is less than 0.01%, and the tapping temperature is 1510 ℃;
[0030] S3: Tapping operation, adding Si and Mn alloy elements for deoxidation during the tapping process, and adding carbon powder and slag-forming agent;
[0031] S4: Refining outside the furnace, adding Cr element in the LF furnace and blowing oxygen to remove C, respectively controlling the content of Cr element to 65% of the end point content and the C element content to 100% of the end point content; then use VOD furnace to deoxidize Add Cr to control the content of ...
Embodiment 7
[0034] A method for producing an H13 high-speed precision forging die steel ingot, comprising the following steps:
[0035] S1: molten steel pretreatment, using KR method to pre-desulfurize molten steel to reduce the sulfur content to 0.01%;
[0036] S2: electric arc furnace smelting, adding molten steel, scrap steel and pig iron to the electric arc furnace for smelting, smelting until the carbon content is less than 0.60%, the phosphorus content is less than 0.01%, and the tapping temperature is 1510 ℃;
[0037] S3: Tapping operation, adding Si and Mn alloy elements for deoxidation during the tapping process, and adding carbon powder and slag-forming agent;
[0038] S4: Refining outside the furnace, adding Cr element in the LF furnace and deoxidizing C by oxygen blowing, respectively controlling the content of Cr element to 70% of the end point content and the C element content to 102% of the end point content; then use VOD furnace to deoxidize Add Cr to control the content ...
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