本文针对焊缝熔敷金属在高强时，容易开裂问题展开研究，研制了中、高碳合金钢工件表面修复的高强、高韧新型堆焊焊条。
The high strength and high toughness hardfacing covered electrode to the medium-high carbon alloy steel surface' repair was put forward in this paper.
设计了一种含硅量较高的新型铸造合金钢，并研究了该合金钢的显微组织及其腐蚀行为。
The chemical compositions of new cast alloy steel with high si content was designed, its microstructure and corrosion behavior were studied.
从磁场利用的角度考虑，在电磁场快速铸轧技术中使用合金钢辊套比使用新型材料辊套更好。
So it is better to use the alloy steel roller shell in the technology of high-speed electromagnetic roll casting in terms of utilizing magnetic field.
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