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Development of high-strength suspension coil springs with improved corrosion fatigue strength

机译：研发出具有更高抗疲劳强度的高强度悬架螺旋弹簧

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摘要

For the weight reduction of suspension coil springs for automobiles, high-strength steel has been developed. Generally, strength and corrosion fatigue shows contradictory behavior, so the technological basis is to improve corrosion fatigue strength in addition to durability and sag resistance. As a solution for the problem, element design which improved the performance against corrosion and optimum condition of shot peening process were studied. Thus the high-strength suspension coil springs in this paper obtained superior corrosion fatigue strength, compared with the spring made of SUP7. Moreover, as a new basic evaluation method, corrosion fatigue test of springs with an artificial pit was proposed.
机译：为了减轻汽车用悬架螺旋弹簧的重量，开发了高强度钢。通常，强度和腐蚀疲劳表现出相互矛盾的行为，因此技术基础是在提高耐久性和抗流挂性的同时提高腐蚀疲劳强度。为了解决该问题，研究了改善耐腐蚀性能和喷丸强化工艺最佳条件的元件设计。因此，与由SUP7制成的弹簧相比，本文中的高强度悬架螺旋弹簧具有出色的腐蚀疲劳强度。此外，作为一种新的基本评估方法，提出了带有人工点蚀的弹簧腐蚀疲劳试验。

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