风机技术文章 关键词：离心式通风机；超低碳贝氏体钢；焊接；叶轮 [gap=401]Key words: centrifugal compressor; ultra-low carbon bainite steel; welding; impeller
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现代超低碳贝氏体钢 ultra-low carbonbainitic steel ; ULCB
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文章研究了高强度超低碳贝氏体钢的精细结构。
The fine structure of high strength ULCB steel were investigated.
介绍了超低碳贝氏体wdb620钢的力学性能，用几种传统的焊接性试验方法对该钢焊接接头的力学性能及抗裂性进行了研究。
The mechanical properties of steel WDB620 are introduced. Some traditional tests about the mechanical properties and cracking resistance on its welded joint have been made.
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