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在本文中,首先对“G3”鋼在不同热处理条件下的组织与性能进行了研究。结果表明:在910℃±10℃淬火,“G3”鋼得到低碳马氏体后,可使强度极限提高到140Kg/mm~2;硬度达Rc40;延伸率为6～7％;冲击韧性值达5Kg—m/cm~2;脆性将化温度为-60℃。随后进行了产品生产试验,发现成品锨经900～920℃水淬后,硬度在Rc38～40范围内,锨身的弹性弯曲度达35℃,且松压变形极微,耐磨性可提高二倍。
In this paper, we first studied the microstructure and properties of “G3” steel under different heat treatment conditions. The results show that after the quenching at 910 ℃ ± 10 ℃, the strength of the “G3” steel can be increased to 140Kg / mm ~ 2 after the low carbon martensite is obtained; the hardness reaches Rc40; the elongation is 6 ~ 7%; the impact toughness Up to 5Kg-m / cm ~ 2; brittle to the temperature of -60 ℃. Afterwards, the product production test was carried out. It was found that after the finished product was water-quenched at 900-920 ℃, the hardness was within the range of Rc38-40, the elastic bending of the body was 35 ℃, and the loose pressure deformation was minimal and the wear resistance could be increased by two Times