METHOD FOR PRODUCING CHANGEABLE POLYHEDRAL TIPS

FIELD: powder metallurgy, namely production of gradient hard-alloy tips for metal cutting tools. ^ SUBSTANCE: method for making hard-alloy polyhedral changeable tips comprises steps of pressing mixture of powders of refractory compounds and cobalt; then subjecting it to preliminary agglomeration at...

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Hauptverfasser:	KAZANTSEV NIKOLAJ IVANOVICH, PEL'TS ALEKSANDR DAVIDOVICH, ERMOLAEV ANDREJ VIKTOROVICH, ZOLOTAREVA NATAL'JA NIKOLAEVNA, BLINKOV IGOR' VIKTOROVICH, ANIKIN VJACHESLAV NIKOLAEVICH, TAMBOVTSEVA ALLA AGANESOVNA, FADEEV VALERIJ SERGEEVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	ALLOYS CASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	FIELD: powder metallurgy, namely production of gradient hard-alloy tips for metal cutting tools. ^ SUBSTANCE: method for making hard-alloy polyhedral changeable tips comprises steps of pressing mixture of powders of refractory compounds and cobalt; then subjecting it to preliminary agglomeration at 830 - 900°C; performing surface alloying due to impregnating with suspension of powder of low- cobalt hard alloy in mixture of alcohol and glycerin at relation 2 : 1 in ultrasound field for 4 - 8 min. After surface alloying final agglomeration is performed and wear-resistant coating is applied. Formed tip has viscous core part and hard surface layer providing its strength at working different materials. ^ EFFECT: improved structure, increased surface strength of tip. ^ 1 tbl, 1 ex