Often, surface mechanical treatment (SMT) or heat (quenching, tempering) is used to improve the surface condition and mechanical characteristics such as impact resistance and tensile strength. Hence the objective of this experimental work, where ball burnishing (BB) as well as quenching and tempering were applied on S355 JR steel specimens, is to evaluate the surface hardness Hv, the rupture strength Rm, the energy absorbed W during the impact test, and the work-hardened thickness e after the burnishing operation. Factorial designs were used for the test organization and mathematical models were established for the prediction of Hv, Rm, W, and “e” in function on treatment parameters considered: number of tool passes (i) and the pressure force (Py). The results show that the surface hardness increases by 30.46%. The high levels of Py and i were allowed to improve Rm by 30.8% as well as an increase in tenacity of only 3.6%. Increasing the force to 20kgf promotes mixed rupture under the effect of impact to shock. The quenching and tempering improve the Rupture strength Rm by 183% and 119%, respectively, while the effect of burnishing was limited to a rate of increase of this property of 28% compared to machining.

通常，表面机械处理 (SMT) 或热处理（淬火、回火）用于改善表面状况和机械特性，例如抗冲击性和拉伸强度。因此，本实验工作的目的是对 S355 JR 钢试样进行球磨光 (BB) 以及淬火和回火，以评估表面硬度Hv、断裂强度Rm、冲击试验过程中吸收的能量W，和抛光操作后的加工硬化厚度e。试验组织采用因子设计，建立数学模型预测Hv , Rm , W和“e”在处理参数的函数中考虑：工具通过次数 (i) 和压力 (Py)。结果表明，表面硬度提高了30.46%。允许高水平的Py和i将Rm提高 30.8%，并且韧性仅增加 3.6%。将力增加到 20kgf 会在冲击对冲击的影响下促进混合破裂。淬火和回火分别将断裂强度Rm提高了183% 和 119%，而与机械加工相比，抛光的效果仅限于使该性能提高 28%。