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首頁 >> 新聞動態 >>行業新聞 >> 精密軸承鋼的冶煉品質成分規定
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精密軸承鋼的冶煉品質成分規定

精密軸承鋼的冶煉品質有嚴苛的成分規定一般精密軸承用鋼主要是高碳鋼鉻精密軸承鋼,即碳含量1%上下,添加1.5%上下的鉻,并帶有小量的錳、硅元素的過共析鋼。鉻能夠改進熱處理工藝特性、提升切削性能、機構勻稱性、淬火可靠性,又可以提升鋼的防銹處理特性和切削特性。當鉻含量超過1.65%時,熱處理后鋼中殘余馬氏體含量增加,規格強度和可靠性降低,滲碳體的不均勻性提高,鋼的斷裂韌性和疲勞極限降低。


因此,高碳鋼鉻精密軸承鋼中的含鎂量一般操縱在1,65%下列。僅有嚴控精密軸承鋼中的成分,才可以根據熱處理工藝工藝流程得到 考慮精密軸承特性的機構和強度。


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