Tube welding rod resistant to high stress abrasion

A tube welding rod resistant to high stress abrasion is used for hard facing of an abrasion-resistant layer, and comprises a welded tube and a filler filling the welded tube. The filler comprises, in weight percentages, 65-90% of spherical sintered tungsten carbide particles, 5-30% of spherical cast...

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Bibliographische Detailangaben
Hauptverfasser:	SONG QUANSHENG, ZHANG LIEHUA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A tube welding rod resistant to high stress abrasion is used for hard facing of an abrasion-resistant layer, and comprises a welded tube and a filler filling the welded tube. The filler comprises, in weight percentages, 65-90% of spherical sintered tungsten carbide particles, 5-30% of spherical cast tungsten carbide particles, 0-15% of mechanically ground cast tungsten carbide particles, 2-6% of alloy power, and 0.2-1% of an organic binder. The used of the mixed spherical sintered tungsten carbide particles and the spherical cast tungsten carbide particles improves the abrasion resistance performance of the hard-faced layer in the high stress working condition, improves the overall abrasion resistance of the abrasion-resistant hard-faced layer formed by the welding rod, and is suitable for surface hardening of bits.