The invention belongs to the technical field of automobile metal material processing and application, and particularly relates to a boron-titanium microalloyed fine-grain steel sheet torsion spring composite stabilizer bar and a manufacturing method thereof.The sheet bar and a shaft tube are made of boron-titanium microalloyed fine-grain steel, and the boron-titanium microalloyed fine-grain steel comprises, by mass, 0.32-0.36% of C, 0.35-0.35% of B, 0.35-0.35% of C, 0.35-0.35% of S, 0.35-0.35% of B, 0.35-0.35% of B, 0.35-0.35% of B, 0.35- 0.15 to 0.35 part of Si; mn: 1.20 to 1.50%; p < = 0.020; s is less than or equal to 0.020; 0.30 to 0.60% of Cr; 0.02 to 0.05 part of Al; b: 0.0015 to 0.0030% of the total weight of the raw materials 0.015 to 0.035% of Ti; 0.30% or less of Ni; 0.10% or less of Mo; sn < = 0.03; 0.20% or less of Cu; 0.008 to 0.020% of N (nitrogen); o: < = 0.0015; h < = 0.0002; the fatigue life is prolonged, and various mechanical properties are improved.
本发明属于汽车金属材料加工应用技术领域,具体涉及一种硼钛微合金化细晶粒钢片扭簧复合稳定杆及其制造方法,所述片杆和轴管由硼钛微合金化细晶粒钢制成,所述硼钛微合金化细晶粒钢的组分质量百分比范围如下,C:0.32~0.36;Si:0.15~0.35;Mn:1.20~1.50;P≤0.020;S≤0.020;Cr:0.30~0.60;Al:0.02~0.05;B:0.0015~0.0030;Ti:0.015~0.035;Ni≤0.30;Mo≤0.10;Sn≤0.03;Cu≤0.20;N:0.008~0.020;O:≤0.0015;H≤0.0002;其余为Fe及杂质,提高了疲劳寿命和各项力学性能。
Boron-titanium microalloying fine-grain steel sheet torsion spring composite stabilizer bar and manufacturing method thereof
一种硼钛微合金化细晶粒钢片扭簧复合稳定杆及其制造方法
2023-11-24
Patent
Electronic Resource
Chinese
European Patent Office | 2015
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