【摘要】 在感应淬火中，通过改变加热时间、加热功率和冷却速度可以改变淬硬层深度和硬度梯度。对２６ｍ ｍ Ｃ Ｋ４５ 钢轴杆，当表面硬度为５４ ～６２ Ｈ Ｒ Ｃ，硬化层深度为３８ ～５３ ｍ ｍ ，心部硬度＜ ３２ Ｈ Ｒ Ｃ 时，轴杆具有最佳的强韧性，获得了较高的静扭强度和扭转疲劳寿命更多还原

【Abstract】 The Hardening case depth and hardness curve can be changed by adjusting heating time,heating power and cooling speed during induction hardening.For diameter 26mm axle bar of CK45 steel,when surface hardness is 54～62HRC,core maximum hardness is 32HRC and case depth is 3 8～5 3mm,it has an optimum combination of strength and ductility.The axle bar will have high ultimate torsion and torsion fatigue life.更多还原