Invention Grant
US08602131B2 Process for manufacturing a part comprising a block of dense material constituted of hard particles and of binder phase having a gradient of properties, and resulting part
有权
制造包括由硬质颗粒构成的致密材料块和具有特性梯度的粘结相的部件的制造方法以及所得部分
- Patent Title: Process for manufacturing a part comprising a block of dense material constituted of hard particles and of binder phase having a gradient of properties, and resulting part
- Patent Title (中): 制造包括由硬质颗粒构成的致密材料块和具有特性梯度的粘结相的部件的制造方法以及所得部分
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Application No.: US13121366Application Date: 2009-10-07
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Publication No.: US08602131B2Publication Date: 2013-12-10
- Inventor: Christophe Colin , Elodie Sorlier , Alfazazi Dourfaye
- Applicant: Christophe Colin , Elodie Sorlier , Alfazazi Dourfaye
- Applicant Address: US TX Carrollton
- Assignee: Varel International, Ind., L.P.
- Current Assignee: Varel International, Ind., L.P.
- Current Assignee Address: US TX Carrollton
- Agency: Gardere Wynne Sewell LLP
- Agent Andre M. Szuwalski
- Priority: FR0856771 20081007
- International Application: PCT/FR2009/051910 WO 20091007
- International Announcement: WO2010/040953 WO 20100415
- Main IPC: E21B10/46
- IPC: E21B10/46 ; B22D17/24 ; B22D19/00 ; B22F3/00 ; B22F5/00 ; B22F7/00 ; C22C29/02
Abstract:
A block of dense material is made up of hard particles, of the same or different nature, dispersed in a binder phase. The material has a solidus temperature Ts above which the binder phase is liquid. There is deposited on at least a portion of the surface of the block of dense material an active coating composed of a material capable of reacting chemically with the dense material when the assembly is heated to beyond a minimum reaction temperature Tr. The block coated with the active coating is subjected to a heat treatment comprising heating, then maintenance for a time tm at a maintenance temperature Tm greater than or equal to the minimum reaction temperature Tr, followed by cooling to ambient temperature.
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