CN2412684Y - Diamond/hard metal composite piece - Google Patents
Diamond/hard metal composite piece Download PDFInfo
- Publication number
- CN2412684Y CN2412684Y CN 00203712 CN00203712U CN2412684Y CN 2412684 Y CN2412684 Y CN 2412684Y CN 00203712 CN00203712 CN 00203712 CN 00203712 U CN00203712 U CN 00203712U CN 2412684 Y CN2412684 Y CN 2412684Y
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- diamond
- diamond layer
- hard alloy
- hard metal
- utility
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Abstract
The utility model relates to a diamond/hard metal composite piece, which is formed by that a diamond layer (1) and a hard metal liner bottom (2) are burned to be combined under a superhigh pressure and a high temperature. The utility model is suitable for the use as a drill tooth on a petroleum drill head. The utility model is characterized in that a crescent groove (3) is arranged on a periphery of the combination surface of the hard metal liner bottom (2) and the diamond layer (1), and the antiwear capability of the drill tooth of the composite piece is enhanced by enhancing the thinckness of the diamond layer and the content of a diamond to make the drilling speed and the drilling depth of the drill head enhanced, which satisfies use requirements of the drill head of a deep weell or an ultra-deep well.
Description
The utility model relates to a kind of diamond/hard alloy complex sheet, belongs to superhard material and makes the field.
Diamond/hard alloy complex sheet is by diamond layer and the cemented carbide substrate composite superhard material that sintering forms under the high pressure high temperature condition, it has the excellent properties of diamond and carbide alloy concurrently, is widely used as the drilling element-brill tooth on the oil bit.Composite sheet during drilling well on the drill bit is bored tooth and is born powerful cutting resistance in stratum and impact force, the diamond layer part of composite sheet, is that the cutting edge position on drilling stratum produces strong wear and tipping, has a strong impact on the bit speed and the drilling depth of drill bit.The antiwear property of composite sheet depends on the thickness of diamond layer, and promptly thickness is thick more, and diamond content is many more, and antiwear property is strong more; And the ability of composite sheet anti-tipping blade depends on the bond strength of diamond layer and cemented carbide substrate, and bond strength is good more, and composite sheet anti-tipping blade ability is high more.For improving the bond strength that diamond layer and hard close substrate layer, utility model patent ZL942015363.3, ZL95209001.5 and ZL96245178.9 have proposed respectively to open straight trough on the cemented carbide substrate bonding surface, cannelure, some kinds of schemes such as ring straight trough, the diamond layer and the cemented carbide substrate of composite sheet are meshing with each other, its bond strength and anti-tipping blade ability increase to some extent, the drilling well effect makes moderate progress, but the thinner thickness of its diamond layer, maximum ga(u)ge (groove) is all less than 2mm, therefore the antiwear property of composite sheet is lower, and the bit speed of drill bit and drilling depth can't satisfy the instructions for use of deep-well or ultradeep well drill bit.
The purpose of the utility model is the diamond layer thickness that increases diamond/hard alloy complex sheet, improves its antiwear property, and a kind of deep-well or ultradeep well drill bit diamond/hard alloy complex sheet is provided.
Above-mentioned purpose realizes by following scheme: diamond/hard alloy complex sheet (Fig. 1) is to be formed by diamond layer (1) and cemented carbide substrate (2) sintering under the high pressure high temperature condition, garden at the bonding surface of cemented carbide substrate (2) and diamond layer (1) has two crescent shaped groove (3) on week, diamond layer (1) gos deep in the groove (3), and its thickness is 2～8mm.
The degree of depth L of described crescent shaped groove (3) is that 1～7mm, action H are 2～5mm, and the quantity of crescent shaped groove (3) is 1～4.
Described cemented carbide substrate (2) has A planar shaped, B straight trough shape, C ring groove shape, D ring straight trough shape or their combination shape with the original-shape (Fig. 2) of diamond layer bonding surface, promptly all can open crescent shaped groove (3) on the bonding surface with the cemented carbide substrate of above-mentioned shape (2).
Therefore, compared with the prior art this diamond/hard alloy complex sheet has the following advantages: the thickness that diamond layer (1) is located in crescent shaped groove (3) can reach 2～8mm, be generally 4mm, when composite sheet is welded on the matrix as the brill tooth, with the cutting edge of this place as the drilling stratum, can improve antiwear property greatly, thereby the bit speed of drill bit and drilling depth are significantly increased.Facts have proved and adopt this diamond/hard alloy complex sheet as the drill bit that bores tooth, bit speed can improve more than 20%, and drilling depth can improve more than 40%, can satisfy the instructions for use of deep-well or ultradeep well drill bit.
Fig. 1 is the schematic diagram of the utility model diamond/hard alloy complex sheet.
Fig. 2 is cemented carbide substrate (2) schematic diagram of the utility model diamond/hard alloy complex sheet.
Embodiment 1: a kind of diamond/hard alloy complex sheet (Fig. 1), sintering under the high pressure high temperature condition forms by diamond layer (1) and cemented carbide substrate (2), it is that (Fig. 2-A), the degree of depth of its crescent shaped groove (3) is that 2.5mm, action are 2mm, 2 symmetrical distributions of groove for the structure of planar shaped that its substrate (2) adopts bonding surface.The thickness that diamond layer (1) is located in crescent shaped groove (3) is 3.5mm.
Embodiment 2: as the diamond/hard alloy complex sheet (Fig. 1) as described in the embodiment 1, different is, and its substrate (2) adopts bonding surface is straight trough shape structure, and the degree of depth of its crescent shaped groove (3) is that 3mm, action are 3mm, 2 symmetrical distributions of groove.The thickness that diamond layer (1) is located in crescent shaped groove (3) is 4mm.
Claims (3)
1, a kind of diamond/hard alloy complex sheet is by diamond layer (1) and hard
Alloy substrate (2) sintering under high pressure high temperature forms, and it is characterized in that in substrate (2)
Have crescent shaped groove (3) on week with the garden of the bonding surface of diamond layer (1).
2, as the diamond/hard alloy complex sheet as described in the claim (1), its feature
The degree of depth that is crescent shaped groove (3) is that 1～7mm, action are 2～5mm, groove number
1～4.
3, as the diamond/hard alloy complex sheet as described in claim (1) or (2),
The bonding surface that it is characterized in that cemented carbide substrate (2) is shaped as planar shaped or straight trough shape
Or annular groove ring straight trough shape or their combination shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00203712 CN2412684Y (en) | 2000-02-22 | 2000-02-22 | Diamond/hard metal composite piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00203712 CN2412684Y (en) | 2000-02-22 | 2000-02-22 | Diamond/hard metal composite piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2412684Y true CN2412684Y (en) | 2001-01-03 |
Family
ID=33572319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00203712 Expired - Lifetime CN2412684Y (en) | 2000-02-22 | 2000-02-22 | Diamond/hard metal composite piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2412684Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101324175B (en) * | 2008-07-29 | 2011-08-31 | 贺端威 | Diamond-silicon carbide combination drill teeth for petroleum probe boring and manufacture method thereof |
| CN101611210B (en) * | 2007-01-08 | 2013-05-15 | 霍利贝顿能源服务公司 | Intermetallic aluminide polycrystalline diamond compact (pdc) cutting elements |
| CN104493182A (en) * | 2014-10-23 | 2015-04-08 | 金华中烨超硬材料有限公司 | Diamond-high vanadium-titanium hard alloy polycrystalline composite chip and preparation method thereof |
| CN107538011A (en) * | 2017-09-04 | 2018-01-05 | 中科钢研节能科技有限公司 | Crystal grain refinement diamond composite teeth and preparation method thereof |
| CN109954883A (en) * | 2019-03-12 | 2019-07-02 | 广东工业大学 | Composite polycrystal-diamond preparation method with three-dimensional framework hard alloy substrate |
-
2000
- 2000-02-22 CN CN 00203712 patent/CN2412684Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101611210B (en) * | 2007-01-08 | 2013-05-15 | 霍利贝顿能源服务公司 | Intermetallic aluminide polycrystalline diamond compact (pdc) cutting elements |
| CN101324175B (en) * | 2008-07-29 | 2011-08-31 | 贺端威 | Diamond-silicon carbide combination drill teeth for petroleum probe boring and manufacture method thereof |
| CN104493182A (en) * | 2014-10-23 | 2015-04-08 | 金华中烨超硬材料有限公司 | Diamond-high vanadium-titanium hard alloy polycrystalline composite chip and preparation method thereof |
| CN104493182B (en) * | 2014-10-23 | 2016-06-29 | 金华中烨超硬材料有限公司 | A kind of diamond-Gao vanadium titanium hard alloy glomerocryst composite sheet and preparation method thereof |
| CN107538011A (en) * | 2017-09-04 | 2018-01-05 | 中科钢研节能科技有限公司 | Crystal grain refinement diamond composite teeth and preparation method thereof |
| CN109954883A (en) * | 2019-03-12 | 2019-07-02 | 广东工业大学 | Composite polycrystal-diamond preparation method with three-dimensional framework hard alloy substrate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010103 |