High wear resistant ultra-high carbon steel and preparation method for same
A technology of ultra-high carbon steel and high wear resistance. It is applied in the field of steel for wear-resistant parts. It can solve the problems of reduced impact toughness, low cost, and insignificant impact load. It achieves good cutting performance, less precious alloy elements, and The effect of significant economic benefits
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[0005] 1 The ultra-high carbon steel with high wear resistance according to the present invention, its chemical composition (by mass percentage) is: C 1.25-1.35%; Cr 3.2-4.2%; Si 0.5-1.2%; Mn: 0.85-1.25 %, V: 0.08-0.15%; Mo≤0.3%, S≤0.025%, P≤0.025%; the rest is Fe and inevitable impurities. It is smelted in an intermediate frequency induction furnace. The scrap of finished steel and steel-making pig iron are used as raw materials. After adding ferromolybdenum and ferrochromium, it is energized and melted. The temperature of the molten steel is controlled to 1580℃, and ferrosilicon, ferromanganese and ferrovanadium are added in sequence to melt uniformly After that, it is deoxidized with aluminum, tapped and poured; and prepared by the following heat treatment: heating at 900 to 920°C, isothermal at 300°C in a salt bath for 30 minutes, and then placed in a box-type resistance furnace at 320°C for 180 minutes and air cooling.
[0006] 2 A kind of ultra-high carbon steel with high w...
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