CN204023383U - Pavement milling machine diamond segment - Google Patents
Pavement milling machine diamond segment Download PDFInfo
- Publication number
- CN204023383U CN204023383U CN201420295307.4U CN201420295307U CN204023383U CN 204023383 U CN204023383 U CN 204023383U CN 201420295307 U CN201420295307 U CN 201420295307U CN 204023383 U CN204023383 U CN 204023383U
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- CN
- China
- Prior art keywords
- milling machine
- antifriction alloy
- diamond
- alloy seat
- steel body
- Prior art date
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- Expired - Fee Related
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Abstract
Pavement milling machine diamond segment, comprise head steel body, head steel body rear end is provided with connecting portion, described head steel body front end face adopts the mode of soldering to be connected with antifriction alloy seat, antifriction alloy seat front end face offers groove, in groove, be inlaid with composite polycrystal-diamond, it is synthetic that composite polycrystal-diamond mixes by diamond particles and cementing agent the polycrystalline diamond layer and the cemented carbide substrate layer sintering under HTHP that form, polycrystalline diamond layer protrudes from antifriction alloy seat front end face, antifriction alloy seat and polycrystalline diamond layer are all pre-small post-large conical structure.The utility model is that the high-wearing feature of composite polycrystal-diamond, stronger impact resistance are applied on milling machine cutter head, improve digging efficiency, extended the application life of milling machine cutter head, reduced milling machine bit replacing number of times, and then reduction construction cost, increase work efficiency.
Description
Technical field
The utility model relates to a kind of pavement milling machine, relates in particular to a kind of pavement milling machine diamond segment.
Background technology
In the prior art, traditional carbide alloy milling machine cutter head structure is made up of two parts.Wherein a part is milling machine cutter head steel body, and milling machine cutter head steel body is made up of alloy steel products; Another part is hard-metal insert head, and hard-metal insert head is welded on milling machine cutter head steel body head.Tradition is revolved milling machine cutter head structure and is widely used in the high-grade road-surface milling operation such as pitch, cement.In practical work process, in the time running into the higher cement concrete pavement of hardness, milling machine cutter head is subject to larger shock loading and friction, and traditional carbide alloy milling machine tool bit abrasion is very fast, has seriously reduced working life and the efficiency of milling machine cutter head.
The failure mode of tradition carbide alloy milling machine cutter head mainly contains two kinds: the one, and along with the wearing and tearing of hard-metal insert head, milling machine tool bit abrasion, digging efficiency will significantly decline.The 2nd, because milling machine cutter head steel body front end position abrasion resistance is low; in work, wear and tear prior to hard-metal insert head in milling machine cutter head steel body front end position; milling machine cutter head steel body has lost the support protective effect to hard-metal insert head, thereby makes hard-metal insert head also completely not wear and tear and come off with regard to entirety.
Utility model content
The utility model is in order to solve weak point of the prior art, provide that a kind of abrasion resistance is strong, reliability is high, long service life, can the higher road surface of cutting hardness pavement milling machine diamond segment.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: pavement milling machine diamond segment, comprise head steel body, head steel body rear end is provided with connecting portion, described head steel body front end face adopts the mode of soldering to be connected with antifriction alloy seat, brazing layer between head steel body and antifriction alloy seat is coated on antifriction alloy seat rear portion to anterior extension of periphery, by tungsten-carbide powder and cobalt dust, sintering under HTHP forms antifriction alloy seat, antifriction alloy seat front end face offers groove, in groove, be inlaid with composite polycrystal-diamond, it is synthetic that composite polycrystal-diamond mixes by diamond particles and cementing agent the polycrystalline diamond layer and the cemented carbide substrate layer sintering under HTHP that form, polycrystalline diamond layer protrudes from antifriction alloy seat front end face, antifriction alloy seat and polycrystalline diamond layer are all pre-small post-large conical structure.
The thickness of described polycrystalline diamond layer is 0.1～3.0mm; The internal diameter of described groove is 4mm～12mm, and the degree of depth of groove is 6mm～20mm.
Adopt technique scheme, the utlity model has following beneficial effect:
1, the utility model is that the high-wearing feature of composite polycrystal-diamond, stronger impact resistance are applied on milling machine cutter head, improve digging efficiency, extended the application life of milling machine cutter head, reduced milling machine bit replacing number of times, and then reduction construction cost, increase work efficiency.
2, adopt composite polycrystal-diamond to be embedded in the central structure of antifriction alloy seat; avoid because the anterior too early wearing and tearing of head steel body have lost the support protective effect to composite polycrystal-diamond, avoided the composite polycrystal-diamond just overall situation about losing efficacy that comes off of also not wearing and tearing completely to occur.
3, brazing layer is coated by antifriction alloy seat rear portion, the intensity between so further raising head steel body and Connection Block; The thickness of polycrystalline diamond layer, the internal diameter of groove, degree of depth equidimension are the optimization technique parameters for economy and overall balance in application life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, pavement milling machine diamond segment of the present utility model, comprise head steel body 1, head steel body 1 rear end is provided with connecting portion 2, connecting portion 2 is for being connected to the power drive end of head steel body 1, head steel body 1 front end face adopts the mode of soldering to be connected with antifriction alloy seat 4, cored solder can adopt copper or silver soldering sheet, brazing layer 3 between head steel body 1 and antifriction alloy seat 4 is coated on antifriction alloy seat 4 rear portions to anterior extension of periphery, by tungsten-carbide powder and cobalt dust, sintering under HTHP forms antifriction alloy seat 4, there is higher impact resistance and abrasion resistance.Antifriction alloy seat 4 front end faces offer groove 5, in groove 5, be inlaid with composite polycrystal-diamond, composite polycrystal-diamond is mixed the polycrystalline diamond layer 6 forming by diamond particles and cementing agent synthetic with cemented carbide substrate layer 7 sintering under HTHP, polycrystalline diamond layer 6 protrudes from antifriction alloy seat 4 front end faces, and antifriction alloy seat 4 and polycrystalline diamond layer 6 are all pre-small post-large conical structure.
Antifriction alloy seat 4 Main Functions are: the one, head steel body 1 front portion is shielded; The 2nd, composite polycrystal-diamond is play fixed supporting role.
The thickness of polycrystalline diamond layer 6 is 0.1～3.0mm; The internal diameter of groove 5 is 4mm～12mm, and the degree of depth of groove 5 is 6mm～20mm.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.
Claims (2)
1. pavement milling machine diamond segment, comprise head steel body, head steel body rear end is provided with connecting portion, it is characterized in that: described head steel body front end face adopts the mode of soldering to be connected with antifriction alloy seat, brazing layer between head steel body and antifriction alloy seat is coated on antifriction alloy seat rear portion to anterior extension of periphery, antifriction alloy seat front end face offers groove, in groove, be inlaid with composite polycrystal-diamond, polycrystalline diamond layer protrudes from antifriction alloy seat front end face, and antifriction alloy seat and polycrystalline diamond layer are all pre-small post-large conical structure.
2. pavement milling machine diamond segment according to claim 1, is characterized in that: the thickness of described polycrystalline diamond layer is 0.1～3.0mm; The internal diameter of described groove is 4mm～12mm, and the degree of depth of groove is 6mm～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295307.4U CN204023383U (en) | 2014-06-05 | 2014-06-05 | Pavement milling machine diamond segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420295307.4U CN204023383U (en) | 2014-06-05 | 2014-06-05 | Pavement milling machine diamond segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204023383U true CN204023383U (en) | 2014-12-17 |
Family
ID=52063271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420295307.4U Expired - Fee Related CN204023383U (en) | 2014-06-05 | 2014-06-05 | Pavement milling machine diamond segment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204023383U (en) |
-
2014
- 2014-06-05 CN CN201420295307.4U patent/CN204023383U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |