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在传统SHarP-c曲轴感应淬火技术的基础上,以某汽车四缸机B15T曲轴淬火工艺为例,提出了优化的曲轴感应淬火+回火工艺。测量了曲轴感应淬火/回火后的表面硬度、淬硬层深度以及宽度。结果表明,淬火后表面硬度最大偏差1.7 HRC,上、下止点硬化层深度最大偏差0.07 mm,上、下止点淬火宽度最大相差0.3 mm;淬火前后的变形量不到0.1 mm;淬火和回火共用时29 s,显著提高了曲轴淬火生产效率。
Based on the traditional induction hardening technology of SHarP-c crankshaft, taking the quenching process of B15T crankshaft of a four-cylinder engine as an example, an optimized crankshaft induction quenching and tempering process is proposed. The surface hardness, hardened depth and width of the induction hardened / tempered crankshaft were measured. The results show that the maximum deviation of surface hardness after quenching is 1.7 HRC, the maximum depth deviation of top and bottom dead center is 0.07 mm, the maximum width of quenching width at top and bottom dead centers is 0.3 mm, the deformation before and after quenching is less than 0.1 mm, When the fire is shared for 29 s, the crankshaft quenching production efficiency is significantly improved.