CN202467669U - Basal body for forming polycrystalline diamond composite sheet - Google Patents
Basal body for forming polycrystalline diamond composite sheet Download PDFInfo
- Publication number
- CN202467669U CN202467669U CN2012201241779U CN201220124177U CN202467669U CN 202467669 U CN202467669 U CN 202467669U CN 2012201241779 U CN2012201241779 U CN 2012201241779U CN 201220124177 U CN201220124177 U CN 201220124177U CN 202467669 U CN202467669 U CN 202467669U
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- ring gear
- hard alloy
- outer tooth
- alloy layer
- gear
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Abstract
The utility model discloses a basal body for forming a polycrystalline diamond composite sheet. The basal body comprises a cylindrical hard alloy layer; the upper end face of the hard alloy layer is raised to form a central protrusion and toothed rings; the central protrusion is arranged in the center of the upper end face of the hard alloy layer; and the toothed rings are arranged around the central protrusion. By adopting the structure, the basal body is simple in overall structure and convenient to implement; and when the basal body is combined with a polycrystalline diamond layer to form the polycrystalline diamond composite sheet, the stress at the interface combination position of the basal body and the hard alloy layer is reduced, and the bonding strength is high.
Description
Technical field
The utility model relates to the super-hard compound material field, specifically is the matrix that is used to constitute composite polycrystal-diamond.
Background technology
Along with the manufacturing science technology rapid development, various new materials, functional material and composite material continue to bring out, and its application constantly enlarges, and the economic and social benefit that is produced also significantly increases.Composite polycrystal-diamond is by polycrystalline diamond layer and the hard alloy layer super-hard compound material that sintering forms under HTHP; As a kind of important tool materials; Composite polycrystal-diamond not only has high hardness and abrasion resistance; And have high impact resistance and heat stability, therefore, composite polycrystal-diamond becomes the critical material of oil, natural gas and geological drilling.
When composite polycrystal-diamond is applied on the drill bit; It is the main working parts on the drill bit; Therefore; The quality of its performance has directly determined the oil-gas geology drilling efficiency, just becomes the direction that people mainly research and develop so how to improve the combination property of composite polycrystal-diamond, and design rational interface shape the combination property that improves composite polycrystal-diamond is had very large effect.As everyone knows, diamond and carbide alloy are two kinds of distinct materials, and both physics, chemical property all differ greatly; The former coefficient of thermal expansion is very little; Latter's coefficient of thermal expansion is very big, when HTHP synthesizes composite polycrystal-diamond, because be rapidly heated and temperature-fall period; So having bigger stress in the junction, interface of two kinds of materials exists; This stress is harmful stress, and its combination property infringement to composite polycrystal-diamond is very big, so the residual stress that how to reduce at the interface becomes present people's question of common concern.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, provides when the polycrystalline diamond composite sheet to reduce interface junction stress, thus the matrix that is used to constitute composite polycrystal-diamond of bond strength between enhancing and the polycrystalline diamond layer.
The purpose of the utility model mainly realizes through following technical scheme: the matrix that is used to constitute composite polycrystal-diamond; Comprise columned hard alloy layer; Said hard alloy layer upper surface epirelief constitutes center projections and ring gear; Said center projections is arranged on the central part of hard alloy layer upper surface, and said ring gear is around the center projections setting.
Said ring gear comprises internal gear, middle ring gear and outer tooth ring, and said internal gear is near center projections, and said outer tooth ring is near the edge of hard alloy layer upper surface, and said middle ring gear is arranged between internal gear and the outer tooth ring.
. said internal gear, middle ring gear and outer tooth ring are provided with the polylith projection, constitute groove between adjacent two projections in each ring gear, and the projection of middle ring gear are over against the groove of internal gear and outer tooth ring.The utility model is when specifically being provided with; The projection of ring gear is over against the groove of internal gear and outer tooth ring in the cause; Then the groove of middle ring gear is over against the projection of internal gear and outer tooth ring, so, and behind the utility model and polycrystalline diamond layer sintering; Internal gear, middle ring gear and outer tooth ring three's projection misplaces clamped to polycrystalline diamond layer, this has just strengthened the syndeton of polycrystalline diamond layer and the utility model.
Said internal gear, middle ring gear and outer tooth ring are provided with 12 projections.Varying in size of internal gear, middle ring gear and outer tooth ring three ring; Under the identical situation of three's number of slugs; The bump size that then constitutes internal gear, middle ring gear and outer tooth ring is different, and promptly to big, the bump size of same ring gear is identical by little for internal gear, middle ring gear and outer tooth ring three's projection.
It is the round table-like of smooth surface that said center projections constitutes the top.The utility model center projections is set to round table-like, and its upper end end face constitutes level and smooth curved surface, so, when sintering, is convenient to the flowing of diadust of polycrystalline diamond layer.
Compared with prior art; The utlity model has following beneficial effect: the hard alloy layer upper surface epirelief of the utility model constitutes center projections and ring gear; When the utility model and polycrystalline diamond layer carried out sintering, center projections and ring gear had increased the bonded area of the utility model and polycrystalline diamond layer, had reduced the stress of interface junction; And center projections and ring gear help the polycrystalline diamond layer diamond dust and flow; So, the utility model is connected more firm with the polycrystalline diamond layer sintering time, thereby has strengthened the bond strength between the utility model and the polycrystalline diamond layer.
Description of drawings
Fig. 1 is the sectional structure sketch map of the utility model embodiment;
Fig. 2 is the structural representation of the composite polycrystal-diamond of employing the utility model embodiment formation.
The pairing name of Reference numeral is called in the accompanying drawing: 1, hard alloy layer, 2, polycrystalline diamond layer, 3, center projections, 4, internal gear, 5, middle ring gear, 6, outer tooth ring.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is done further to specify, but the embodiment of the utility model is not limited thereto.
Embodiment:
As shown in Figure 1, be used to constitute the matrix of composite polycrystal-diamond, comprise hard alloy layer 1; Wherein, Hard alloy layer 1 constitutes cylindric, and hard alloy layer 1 is to be main component with high rigidity refractory metal tungsten carbide (WC) micron powder, and is that the cementing agent sintering forms with cobalt (Co).Hard alloy layer 1 upper surface epirelief constitutes center projections 3 and ring gear, and center projections 3 is arranged on the central part of hard alloy layer 1 upper surface, and center projections 3 formation tops are the round table-like of smooth surface; Ring gear comprises internal gear 4, middle ring gear 5 and outer tooth ring 6; Internal gear 4, middle ring gear 5 and outer tooth ring 6 all are provided with around center projections 3; Internal gear 4 is near center projections 3, and outer tooth ring 6 is near the edge of hard alloy layer 1 upper surface, and middle ring gear 5 is arranged between internal gear 4 and the outer tooth ring 6.Internal gear 4, middle ring gear 5 and outer tooth ring 6 are provided with the polylith projection; Projection constitutes the tooth of internal gear 4, middle ring gear 5 and outer tooth ring 6; Constitute groove between adjacent two projections in each ring gear, and the projection of middle ring gear 5 is over against the groove of internal gear 4 and outer tooth ring 6.The number of slugs that is provided with because of internal gear 4, middle ring gear 5 and outer tooth ring 6 threes is 12; And the ring that internal gear 4, middle ring gear 5 and outer tooth ring 6 threes constitute is big or small ascending; Therefore; Internal gear 4, middle ring gear 5 and outer tooth ring 6 threes' projection is also by little extremely big, and the size shape of the projection of identical ring gear is identical.
As shown in Figure 2; When matrix and the polycrystalline diamond layer 2 that is used to constitute composite polycrystal-diamond becomes one, wholely constitute columned composite polycrystal-diamond, so; When being applied in composite polycrystal-diamond on the drill bit; When composite polycrystal-diamond received external impacts, each position of composite polycrystal-diamond was stressed evenly, thereby can avoid composite polycrystal-diamond to separate with polycrystalline diamond layer 2 because of discontinuity between each position causes hard alloy layer 1.
As stated, then can well realize the utility model.
Claims (5)
1. be used to constitute the matrix of composite polycrystal-diamond; It is characterized in that: comprise columned hard alloy layer (1); Said hard alloy layer (1) upper surface epirelief constitutes center projections (3) and ring gear; Said center projections (3) is arranged on the central part of hard alloy layer (1) upper surface, and said ring gear is provided with around center projections (3).
2. the matrix that is used to constitute composite polycrystal-diamond according to claim 1; It is characterized in that: said ring gear comprises internal gear (4), middle ring gear (5) and outer tooth ring (6); Said internal gear (4) is near center projections (3); Said outer tooth ring (6) is near the edge of hard alloy layer (1) upper surface, and said middle ring gear (5) is arranged between internal gear (4) and the outer tooth ring (6).
3. the matrix that is used to constitute composite polycrystal-diamond according to claim 2; It is characterized in that: said internal gear (4), middle ring gear (5) and outer tooth ring (6) are provided with the polylith projection; Constitute groove between adjacent two projections in each ring gear, and the projection of middle ring gear (5) is over against the groove of internal gear (4) and outer tooth ring (6).
4. the matrix that is used to constitute composite polycrystal-diamond according to claim 3 is characterized in that: said internal gear (4), middle ring gear (5) and outer tooth ring (6) are provided with 12 projections.
5. be used to constitute the matrix of composite polycrystal-diamond according to described any of claim 1～4, it is characterized in that: it is the round table-like of smooth surface that said center projections (3) constitutes the top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201241779U CN202467669U (en) | 2012-03-29 | 2012-03-29 | Basal body for forming polycrystalline diamond composite sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201241779U CN202467669U (en) | 2012-03-29 | 2012-03-29 | Basal body for forming polycrystalline diamond composite sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202467669U true CN202467669U (en) | 2012-10-03 |
Family
ID=46915835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201241779U Expired - Lifetime CN202467669U (en) | 2012-03-29 | 2012-03-29 | Basal body for forming polycrystalline diamond composite sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202467669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108145384A (en) * | 2017-12-27 | 2018-06-12 | 武汉锐特金刚石有限公司 | A kind of adamas composite sheet of tooth face and its manufacturing method |
| CN109396448A (en) * | 2017-08-18 | 2019-03-01 | 深圳先进技术研究院 | Composite polycrystal-diamond and preparation method thereof |
-
2012
- 2012-03-29 CN CN2012201241779U patent/CN202467669U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396448A (en) * | 2017-08-18 | 2019-03-01 | 深圳先进技术研究院 | Composite polycrystal-diamond and preparation method thereof |
| CN108145384A (en) * | 2017-12-27 | 2018-06-12 | 武汉锐特金刚石有限公司 | A kind of adamas composite sheet of tooth face and its manufacturing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |