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Steel spring with Malta and spring cleaning high cleaning excellent in fatigue property
Steel spring with Malta and spring cleaning high cleaning excellent in fatigue property
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机译：马耳他弹簧钢弹簧和高强度清洗的弹簧清洗剂，疲劳性能优异
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摘要
The spring steel with high cleanliness and high cleanliness spring excellent in fatigue properties. The spring steel with high cleanness useful in manufacturing a spring with inclusions based on SiO ~ 2 ~ is very controlled and excellent in fatigue properties is provided.The spring steel with high cleanliness steel containing; C: 1.2% (mean mass%, below the same with respect to the component) or below (not including 0%), Si: 1,2 - 4% Mn, 0.1 - 2.0%, al: 0.01% or below (not including 0%). And the balance consisting of iron with unavoidable impurities.Where; the total of the inclusions based on oxide of 4 or above L (the diameter of an inclusion) / D (the small diameter of an inclusion) and 25 109 m or above D and inclusions based on oxide of less than 4 L / D and 25 109 m or above L, in the inclusions based on oxide of 25% Mass or above of the oxygen concentration and 70% (mean mass%.Further, the same with the inclusions) or above the contents of SiO ~ 2 ~ when Al ~ 2 ~ ~ 3 ~ + MgO + CaO + SiO ~ 2 ~ + MnO = 100% is assumed, in addition to the inclusions in steel, is 20 in. / 500 g or below.
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