| Original document(10 pages) Authorized document(10 pages) 中文版 |
The method for preparing interediate transition layer with component gradient change in the molybdenum sleeve of wedge of complex form hand alloy drill bit PCD job by adopting two-step operation process is characterized by that its method includes the following two steps: (1). in the sleeve, pre-adopting wear-resistant coating layer dried powder conglobation granules to press out gravured female die; and (2). in the dried powder gravured female die injecting suspension slurry for several times by leyers, drying so as to form the invented intermediate transion layer with component gradient changed structure. The combination of the above-mentioned two-step processes can prepare the polycrystal diamond strengthened wedge composite tooth with intermediate transion layer, its impact resistance is greater than 400 joules. |
Application Number
申请号 |
03118704 |
Application Date
申请日 |
2003.02.27 |
| Title 名称 |
Method for preparing composition gradient intermediate transition layer on wedge shape or complex shape drill working-surface |
Publication Number
公开号 |
1433862 |
Publication Date
公开日 |
2003.08.06 |
| Approval Pub. Date |
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Granted Pub. Date |
2005.07.13 |
| International Classification 分类号 |
E21B10/46,B22F7/02,B23P5/00 |
Applicant(s) Name
申请人 |
Wuhan Univ. of Technology |
| Address 地址 |
430070 |
| Inventor(s) Name 发明人 |
Li Li, Dong Xuebin |
| Attorney & Agent 代理人 |
zhang anguo |
| More information 更 多 信 息 |
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