共查询到10条相似文献,搜索用时 93 毫秒
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介绍了大功率高压变频器的不同形式及其在太钢的应用。大功率高压变频器设计先进,可使电机软起软停,节约能源,延长设备公用寿命,降低噪声,县有广泛推广价值。 相似文献
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高碳高速钢轧辊制造工艺研究现状及展望 总被引:5,自引:0,他引:5
轧钢工业的发展对轧辊性能提出了更高的要求 ,为适应这一要求 ,开发了高碳高速钢轧辊。普通铸造方法制造高碳高速钢轧辊 ,组织粗大 ,共晶碳化物呈网状分布 ,韧性低 ,抗疲劳性能差 ,使用寿命短。变质处理和电磁搅拌是改善钢铁材料组织和性能的重要手段 ,对高碳高速钢进行变质处理和电磁搅拌研究 ,有望明显改善其组织和性能 ,为普通铸造方法制造高性能高碳高速钢轧辊奠定基础。 相似文献
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探讨了提高高强度高耐候钢冲击韧性和焊接性能的途径。试验表明,采用超纯净化(及Nb Ti微合金化) 控制N、O化物冶金处理 控轧控冷的综合控制工艺,可达到上述目的。 相似文献
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《钢铁研究学报(英文版)》2011,(Z1):817-821
A high strength structure steel plate --brand JG785E, which with more than 690MPa yield strength ,more than 47 joules toughness at minus 40℃ has been developed by Jigang of Shandong Steel Group P. R. China. The steel plates can be easily welded in engineering structure due to its lower carbon equivalent value. The maximum thickness of heavy plate is 50.88mm (2 inch), the yield strength is 710-860MPa, the toughness of steel plate is 139~336J at the temperature of - 40℃ . The microstructure of steel plate is lower carbon Bainite. The main solid dissolve elements are silicon and manganese. All parameters of reheating, rolling and accelerating cooling are controlled strictly. This TMCP procedure can ensure to get better mechanical properties of steel plates, and to keep the market competitive power and lower cost of manufacture. The cleanness of steel is high by refined in ladle furnace (LF), the contents of P and S is lower. It is the low carbon Bainite microstructure that possesses the high strength, excellent lower temperature toughness and better weld-ability without preheat process. The JG785E is typical brand of the Jigang’s high strength steel brands as the S690QL conforms to EN10025-6 and as the ASTM A514M conforms to USA quenching and tempering steel specification. 相似文献
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介绍了太钢烧结系统在风机类设备上成功应用高压大功率变频器的实例,在阐述环冷鼓风机和除尘风机变频改造的基础上,重点论述了对太钢大型烧结机主抽风机实施变频运行改造的技术过程。实施风机高压大功率变频器改造后,系统运行稳定,取得了显著的节能效果。 相似文献