| 摘要 |
PROBLEM TO BE SOLVED: To provide a hard cladding layer formed of a cemented carbide particle hardly deteriorating, in which the dispersability of the cemented carbide particle in the hard cladding layer is excellent and workability is improved by maintaining the original performance of the cemented carbide and reducing pores by facilitating intrusion of molten metal into micropores. SOLUTION: The hard clad welding rod is characterized in that the cemented carbide particle is coated with cooper in the clad welding material comprising a mild steel pipe and the cemented carbide particle in the mild steel pipe. COPYRIGHT: (C)2009,JPO&INPIT
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