High-tenacity steel automobile hardware stamping part and preparation process thereof
A preparation process and technology of stamping parts, applied in the field of high toughness steel automobile metal stamping parts and their preparation process, can solve the problems of short service life, toughness, poor welding performance, poor mechanical performance, etc., and achieve long service life, The effect of good processing performance, improved quality and mechanical properties
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Embodiment 1
[0021] A high-toughness steel automotive hardware stamping, composed of the following elements by mass percentage: C 0.25%, Si 0.42%, Mn 1.2%, B 0.003%, V 0.035%, Ni 0.025%, Mo0.03%, Cu 0.075 %, Co 0.05%, Ta 0.035%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.
[0022] The preparation process of high-toughness steel automobile metal stamping parts comprises the following steps:
[0023] 1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the melting temperature is 1500°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;
[0024] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1380°C, after cooling to r...
Embodiment 2
[0031] A high-toughness steel automotive hardware stamping, composed of the following elements by mass percentage: C 0.26%, Si 0.44%, Mn 1.1%, B 0.003%, V 0.04%, Ni 0.025%, Mo0.025%, Cu 0.08 %, Co 0.045%, Ta 0.03%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.
[0032] The preparation process of high-toughness steel automobile metal stamping parts comprises the following steps:
[0033] 1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the melting temperature is 1490°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;
[0034] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1370°C, after cooling to ro...
Embodiment 3
[0041] A high-toughness steel automotive hardware stamping, composed of the following elements in mass percentage: C 0.23%, Si 0.45%, Mn 1.1%, B 0.004%, V 0.03%, Ni 0.03%, Mo 0.02%, Cu 0.09% , Co 0.03%, Ta 0.04%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.
[0042] The preparation process of high-toughness steel automobile metal stamping parts comprises the following steps:
[0043]1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the smelting temperature is 1460°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;
[0044] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1370°C, after cooling to room...
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