(19)
(11) EP 4 166 258 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.08.2024 Bulletin 2024/34

(43) Date of publication A2:
19.04.2023 Bulletin 2023/16

(21) Application number: 22204377.0

(22) Date of filing: 11.11.2016
(51) International Patent Classification (IPC): 
B22D 19/02(2006.01)
B22F 3/23(2006.01)
B22F 1/12(2022.01)
C22C 1/05(2023.01)
(52) Cooperative Patent Classification (CPC):
B22D 19/02; B22F 1/12; C22C 29/02; C22C 1/053; B22F 3/23; C22C 29/08; C22C 29/10; C22C 29/067
 
C-Sets:
B22F 2998/10, B22F 3/02, C22C 1/053;
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 12.11.2015 PL 41475515

(62) Application number of the earlier application in accordance with Art. 76 EPC:
16820332.1 / 3374107

(71) Applicant: Innerco SP. Z O.O.
30-298 Krakow (PL)

(72) Inventors:
  • Olejnik, Ewa
    32-043 Skala (PL)
  • Jesiolowska, Anna
    30-047 Krakow (PL)

(74) Representative: Grünecker Patent- und Rechtsanwälte PartG mbB 
Leopoldstraße 4
80802 München
80802 München (DE)

   


(54) A CASTING INSERT FABRICATION METHOD USING A COMPOSITION OF POWDERS, A CASTING INSERT AND METHOD OF OBTAINING LOCAL COMPOSITE ZONES IN CASTINGS


(57) The invention relates to a casting insert fabrication method using a composition of powders designed to produce local composite zones resistant to abrasive wear, wherein said composite zones are reinforced with carbides and borides or with mixtures thereof formed in situ in castings, and wherein said powder composition is characterized in that it comprises powder reactants of the formation of carbides and/or borides selected from the group of TiC, WC, , or mixtures thereof, said carbides and/or borides forming after crystallization particles reinforcing the composite zones in castings, and wherein said powder composition further comprises moderator powders in the form of a mixture of metal powders, which after crystallization form matrix of the composite zone in casting. Furthermore, the amount of powder reactants for the formation of TiC carbide is from 3 to 40wt% and the amount of moderator powders is from 60 to 97wt%, the amount of powder reactants for the formation of WC carbide is from 40 to 99wt% and the amount of moderator powders is from 1 to 60wt%, or the amount of the mixture of powders of the reactants of the coupled reaction of the synthesis of TiC and WC carbides is from 10 to 70wt% and the amount of moderator powders is from 30 to 90wt%.
The invention also relates to a casting insert for the fabrication in casting of local composite zones resistant to abrasive wear, and to a method for the fabrication of local composite zones in castings, using for this purpose the reaction of the self-propagating high temperature synthesis (SHS).







Search report









Search report