| 摘要 |
The invention relates to welding, in particular to the powdery compositions for hard-facing, which can be used for wear-resistant hard-facing of the parts, working in abrasive wear conditions. The powdery composition for hard-facing contains carbon, silicon, magnesium, chrome, aluminum, copper, rare-earth metals and iron. Novelty consists in that the composition additionally contains manganese and nickel, having the following component ratio, mass %:carbon 12,0...20,0silicon 10,0...15,0magnesium 0,6...2,0chrome 13...20aluminum 4,0...8,0copper 2,0...5,0rare-earth metals 1,0...1,5manganese 4,0...6,0nickel 3,5...6,5iron the rest.The additional introduction into the composition of manganese and nickel allows to obtain a microstructure of the hard-faced metal without pores and cracks.Claims: 1
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