Invention Grant
- Patent Title: Thermally conductive sand mould shell for manufacturing a matrix bit
- Patent Title (中): 导热砂模壳用于制造矩阵钻头
-
Application No.: US13005869Application Date: 2011-01-13
-
Publication No.: US08814968B2Publication Date: 2014-08-26
- Inventor: Alan Honggen Jiang , Harold Sreshta
- Applicant: Alan Honggen Jiang , Harold Sreshta
- Applicant Address: US TX Houston
- Assignee: National Oilwell Varco, L.P.
- Current Assignee: National Oilwell Varco, L.P.
- Current Assignee Address: US TX Houston
- Agency: JL Salazar Law Firm
- Main IPC: B24D3/00
- IPC: B24D3/00 ; B24D11/00 ; B24D18/00 ; C09K3/14 ; B24D3/02 ; C09C1/68 ; B22C9/02 ; C22C26/00 ; E21B10/00 ; C22C1/10
Abstract:
A thermally conductive sand shell molding system allows for controlling heat flow in a molten metal infiltrate powdered metal drill bit molding system to differentially cool the mold system to control differential shrinking and accompanying stress concentrations.
Public/Granted literature
- US20110167734A1 Thermally Conductive Sand Mould Shell for Manufacturing a Matrix Bit Public/Granted day:2011-07-14
Information query
