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发明授权
CN103228402B 一种抗低应力磨损的管焊条 有权 转让

一种抗低应力磨损的管焊条
摘要：
本发明涉及一种抗低应力磨损的管焊条，它包括有焊管和装于焊管中的填料，填料组分包括宏晶碳化钨颗粒、表面渗碳处理的铸造碳化钨颗粒和/或球形铸造碳化钨颗粒、机械粉碎的铸造碳化钨颗粒、合金粉和有机粘结剂，各组分的重量百分比为：宏晶碳化钨颗粒10～50％，表面渗碳处理的铸造碳化钨颗粒和/或球形铸造碳化钨颗粒43～85％，机械粉碎的铸造碳化钨颗粒0～20％，合金粉2～6％，有机粘结剂0.2～1％。本发明由于混合使用了宏晶碳化钨颗粒、表面渗碳处理的铸造碳化钨颗粒和球形铸造碳化钨颗粒，特别提高了敷焊层在低应力工况下的耐磨损能力，使该焊条所形成的耐磨敷焊层的整体耐磨性得到很大的提高，特别适合牙轮钻头和金刚石钻头的表面强化。
摘要（英）：

A tube welding rod resistant to low stress abrasion comprises a welded tube and a filler filling the welded tube. Components of the filler comprise macrocrystalline tungsten carbide particles, cast tungsten carbide particles and/or spherical cast tungsten carbide particles undergone surface carburization treatment, mechanically ground cast tungsten carbide particles, alloy powder, and an organic binder. The weight percentages of the components are: the macrocrystalline tungsten carbide particles being 10-50%, the cast tungsten carbide particles and/or spherical cast tungsten carbide particles undergone surface carburization treatment being 43-85%, the mechanically ground cast tungsten carbide particles being 0-20%, the alloy powder being 2-6%, and the organic binder being 0.2-1%. The welding rod improves the abrasion resistance performance of the hard-faced layer in the low stress working condition, and is particularly suitable for surface hardening of cone rolling bits and diamond bits.

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