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Air-curable bainitic steel having improved material properties

机译:具有改善的材料性能的可空气固化的贝氏体钢

摘要

A method of producing a forged steel part is disclosed to include providing a steel billet having a composition including 0.25-0.40 wt. % C, 1.50-3.00 wt. % Mn, 0.30-2.00 wt. % Si, 0.00-0.150 wt. % V, 0.02-0.06 wt. % Ti, 0.010-0.04 wt. % S, 0.0050-0.0150 wt. % N, 0.00-1.00 wt. % Cr, 0.00-0.30 wt. % Mo, 0.00-0.003 wt. % B, and a balance of Fe and incidental impurities. The method may further include heating the steel billet to an austenization temperature of approximately 1150 degrees C. to 1350 degrees C., hot forging the steel billet to form the steel part, and controlled air cooling the forged steel part after the hot forging. The method may still further include induction heating select portions of the forged steel part after the controlled air cooling to increase the hardness of the select portions of the forged steel part, followed by quenching and tempering before the final machining.
机译:公开了一种制造锻钢零件的方法,该方法包括提供一种钢坯,该钢坯的组成包括0.25-0.40wt。%。 C,1.50-3.00重量%。 Mn%,0.30-2.00 wt。 Si,0.00-0.150重量%。 V,0.02-0.06重量%。 Ti,0.010-0.04重量%。 %S,0.0050-0.0150 wt。 N,0.00-1.00重量%。 %Cr,0.00-0.30 wt。 Mo%,0.00-0.003 wt。 %B,以及剩余的Fe和杂质。该方法可以进一步包括将钢坯加热到大约1150℃至1350℃的奥氏体化温度,对钢坯进行热锻以形成钢部件,并且在热锻之后对锻造的钢部件进行空气控制冷却。该方法还可以进一步包括:在受控的空气冷却之后,感应加热锻钢零件的选择部分,以增加锻钢零件的选择部分的硬度,然后在最终加工之前进行淬火和回火。

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