| 热处理工艺对SM570钢叉车横梁力学性能的影响 |
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| 引用本文： | 肖结良,黄诚,麻先银.热处理工艺对SM570钢叉车横梁力学性能的影响[J].金属热处理,2020,45(11):210-213. |
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| 作者姓名： | 肖结良 黄诚 麻先银 |
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| 作者单位： | 安徽合力股份有限公司 合肥铸锻厂, 安徽 合肥 230601 |
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| 摘 要： | 通过试验对比了正火和调质热处理工艺对SM570钢叉车横梁力学性能的影响。结果表明,有效厚度为40 mm的横梁在900 ℃×3 h水淬+550 ℃×4 h回火的调质处理后才能完全满足力学性能的要求。而正火后试样的抗拉强度和屈服强度都较低,尤其屈服强度比技术要求低很多。SM570钢叉车横梁若要在正火态下交货,除了Si、Mn的固溶强化,还必须通过微合金化进行细晶强化,从而提高正火态下的屈服强度,提升屈强比。
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| 关 键 词： | SM570钢 叉车横梁 热处理 力学性能 微合金化 |
| 收稿时间： | 2020-04-18 |
Effect of heat treatment on mechanical properties of SM570 steel for forklift beam |
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| Xiao Jieliang,Huang Cheng,Ma Xianyin.Effect of heat treatment on mechanical properties of SM570 steel for forklift beam[J].Heat Treatment of Metals,2020,45(11):210-213. |
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| Authors: | Xiao Jieliang Huang Cheng Ma Xianyin |
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| Affiliation: | Hefei Casting and Forging Factory, Anhui Heli Co., Ltd., Hefei Anhui 230601, China |
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| Abstract: | Effect of heat treatments (normalizing, quenching and tempering) on the mechanical properties of SM570 steel for forklift beam was experimental studied contrastively. The results show that the beam with effective thickness of 40 mm can fully meet the requirements of mechanical properties only after 900 ℃×3 h water quenching and 550 ℃×4 h tempering. The tensile strength and yield strength of the specimens after normalizing are both low, especially the yield strength is much lower than the requirement. If the SM570 steel for forklift beam is to be delivered at the normalized state and both yield strength and yield ratio are to be improved, fine grain strengthening must be carried out by microalloying in addition to the solid solution strengthening by Si and Mn. |
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| Keywords: | SM570 steel forklift beam heat treatment mechanical properties microalloying |
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