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1. WO2022008038 - A CRUSHING OR WEAR PART HAVING A LOCALIZED COMPOSITE WEAR ZONE

Publication Number WO/2022/008038
Publication Date 13.01.2022
International Application No. PCT/EP2020/069094
International Filing Date 07.07.2020
IPC
B22F 7/06 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
7Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting
06of composite workpieces or articles from parts, e.g. to form tipped tools
B22D 19/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
19Casting in, on, or around, objects which form part of the product
02for making reinforced articles
C22C 1/05 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
04by powder metallurgy
05Mixtures of metal powder with non-metallic powder
Applicants
  • SANDVIK SRP AB [SE]/[SE]
Inventors
  • MELK, Latifa
Agents
  • SANDVIK ASSOCIATION
Priority Data
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A CRUSHING OR WEAR PART HAVING A LOCALIZED COMPOSITE WEAR ZONE
(FR) PIÈCE DE BROYAGE OU D'USURE AYANT UNE ZONE D'USURE COMPOSITE LOCALISÉE
Abstract
(EN) A crushing or wear part comprising (a) an un-reinforced steel alloy body and (b) at least one in-situ cast localized composite wear zone disposed in the steel alloy body comprising metal carbide or metal boride particles selected from TiC, ZrC, WC, NbC, TaC, TiB2, and ZrB2 distributed in a steel alloy matrix. The at least one in-situ cast localized composite wear zone has a Vickers Hardness that is at least 700 and at least 50% greater than a Vickers Hardness of the un-reinforced steel alloy body. A bonding region between the in-situ cast localized composite wear zone and the steel alloy body is continuous and free of cracks, and the in-situ cast localized composite wear zone is unfragmented.
(FR) Pièce de broyage ou d'usure comprenant (a) un corps en alliage d'acier non renforcé et (b) au moins une zone d'usure composite localisée coulée in situ, disposée dans le corps en alliage d'acier, comprenant des particules de carbure métallique ou de borure métallique choisies parmi TiC, ZrC, WC, NbC, TaC, TiB2 et ZrB2 réparties dans une matrice en alliage d'acier. Ladite zone d'usure composite localisée coulée in situ présente une dureté Vickers au moins égale à 700 et au moins 50 % supérieure à une dureté Vickers du corps en alliage d'acier non renforcé. Une région de liaison entre la zone d'usure composite localisée coulée in situ et le corps en alliage d'acier est continue et exempte de fissures, et la zone d'usure composite localisée coulée in situ est non fragmentée.
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