CN201221359Y - High abrasion-proof composite cutter bit - Google Patents
High abrasion-proof composite cutter bit Download PDFInfo
- Publication number
- CN201221359Y CN201221359Y CNU200820052684XU CN200820052684U CN201221359Y CN 201221359 Y CN201221359 Y CN 201221359Y CN U200820052684X U CNU200820052684X U CN U200820052684XU CN 200820052684 U CN200820052684 U CN 200820052684U CN 201221359 Y CN201221359 Y CN 201221359Y
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- Prior art keywords
- pick
- handle
- cutting bit
- head
- high abrasion
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Abstract
The utility model discloses a high wear-resistant composite cutting bit, which comprises a cutting bit handle and a cutting bit head which is connected with the end of the cutting bit handle. The external surface of the connecting end between the cutting bit handle and the cutting bit head is coated by a plating diamond layer. The utility model has a simple structure, and can effectively protect the welding position of the hard alloy cutting bit head and the cutting bit handle, further improve the overall performance of the cutting bit, enhance the efficiency of the mining equipment and prolong the service of the mining equipment.
Description
Technical field
The utility model is mainly concerned with colliery and mining apparatus field, refers in particular to a kind of high abrasion-proof composite cutter bit that is used on the equipment such as coal-winning machine, development machine.
Background technology
In the prior art, the digging pick is the key element on the large-scale digger, is mainly used in the digging field such as coal mining, tunnelling in coalfield, along with the growth day by day of resource requirement, the use of large-scale mining machinery more and more widely, thereby to the demands for higher performance of digging pick.
General digging pick is made up of pick handle and cutting pick head two parts, and cutting pick head is welded in an end of pick handle.The pick ubiquity is not wear-resisting because of the pick handle at present, and the carbide alloy cutting pick head that is fixed in pick pommel portion is come off prematurely, causes whole pick to damage inefficacy in advance.Like this,, directly cause whole mining equipment cost to improve, on the other hand because frequent replacing pick makes the efficient of mining equipment not give full play on the one hand because the pick bulk life time is too short.In order to address this problem, main traditionally employing is heat-treated the pick handle or is increased its abrasion resistance at pick handle surface overlaying one deck wear resistance electrode, protects the footpath purpose to reach, but effect and not obvious; And because the influence of high temperature, in the process of heat treatment or build-up wear-resistant welding rod, the carbide alloy cutting pick head is inevitably had to a certain degree damage, cause that the overall performance of pick descends.
The utility model content
The technical problems to be solved in the utility model just is: the technical problem that exists at prior art, thereby the utility model provide a kind of simple in structure, can effectively protect overall performance and then the raising mining equipment efficient and the high abrasion-proof composite cutter bit in life-span to the welding position of carbide alloy cutting pick head and pick handle to improve pick.
For solving the problems of the technologies described above, the solution that the utility model proposes is: a kind of high abrasion-proof composite cutter bit, it comprises pick handle and the cutting pick head that is connected in pick pommel portion, it is characterized in that: plating has the electroplated diamond layer on the external surface of described pick handle and cutting pick head link.
Described cutting pick head comprises hard alloy substrate and the dimond synneusis layer that is compound on the carbide matrix end of body.
The joint face of described carbide matrix end of body and dimond synneusis layer is provided with one or more lug boss.
The composition of described dimond synneusis layer is by weight percentage: diamond 80%～82%, silicon 6%～7%, cobalt 12%～13%.
Described electroplated diamond layer is wrapped on the whole excircle of pick handle or the rib-like that is more than two or two is wrapped on the pick handle excircle.
Compared with prior art, advantage of the present utility model just is: because diamond has high abrasion resistance, the utility model has been electroplated one deck diamond at the pick handle of pick and surface (front portion) normal temperature of carbide alloy cutting pick head connecting portion, strengthened the abrasion resistance at this position so greatly, guaranteed the radial stability at this position in the use, the carbide alloy cutting pick head can be run out of normally; Because diamond electroplating is to carry out at normal temperatures, can not cause fire damage simultaneously, therefore keep the original performance of cutting pick head carbide alloy cutting pick head and pick handle.Like this, being greatly improved of single cutting-gear life, can improve 50%～100% the application life of whole pick, and then the frequency that makes mining machinery in use change pick reduces greatly, thereby significantly improved digging efficient, simultaneously, cost of mining is reduced significantly based on the raising in pick application life and the lifting of digging efficient.
Description of drawings
Fig. 1 makes schematic flow sheet of the present utility model;
Fig. 2 is the main TV structure schematic diagram of the utility model embodiment 1;
Fig. 3 is the side-looking structural representation of the utility model embodiment 1;
Fig. 4 is the main TV structure schematic diagram of the utility model embodiment 2;
Fig. 5 is the side-looking structural representation of the utility model embodiment 2;
Fig. 6 is the structural representation of hard alloy substrate in the cutting pick head in the utility model.
Marginal data
1, pick handle 2, cutting pick head
3, electroplated diamond layer 4, hard alloy substrate
5, dimond synneusis layer 6, lug boss
The specific embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
Embodiment 1: as Fig. 2, shown in Figure 3, carry out the electroplated diamond processing by aforementioned electroplated diamond technology to welding intact carbide alloy pick, the alloy designations that the carbide alloy cutting pick head 2 of this pick adopts is YG11C, the material that pick handle 1 adopts is 35CrMo, and after heat treatment hardness reaches about HRC50.The grade that electroplated diamond adopts is that MBD4, granularity are in 1: 1: 1 ratio to feed intake at 60/70: 70/80: 80/100.Pick after the plating the external surface of pick handle 1 and carbide alloy cutting pick head 2 points of attachment (anterior) Full cloth one circle electroplated diamond layer 3, the thickness of electroplated diamond layer 3 is 0.5mm, the axial length of electroplated diamond layer 3 is than the long 10mm of welding hole.High abrasion-proof composite cutter bit of the present utility model, the PDC cutting pick head 2 that it comprises pick handle 1 and is connected in pick handle 1 end, this PDC cutting pick head 2 comprise hard alloy substrate 4 and the dimond synneusis layer 5 that is fixed on hard alloy substrate 4 ends.In the present embodiment, further the external surface in pick handle 1 and PDC cutting pick head 2 links is provided with electroplated diamond layer 3, and electroplated diamond layer 3 is wrapped on pick handle 1 excircle.PDC cutting pick head 2 adopts silver brazing or copper brazing or the interference of colding pressing is pressed into or hot pressing interference plunging is connected on the pick handle 1, and the electroplated diamond layer 3 of pick handle 1 is handled by conventional electroplated diamond, and the grade that electroplated diamond adopts is MBD
6, granularity is in 2: 1 ratio to feed intake at 70/80: 80/100, the thickness of electroplated diamond layer 3 is 0.6mm, the axial length of electroplated diamond layer 3 is than the long 10mm of welding hole.In real process, select suitable diamond proportioning according to the anti-wear performance of PDC cutting pick head 2, generally be to select the strong diamond proportioning of abrasion resistance with the increase of the wear resistance ratio of PDC cutting pick head 2.Wherein, the composition of dimond synneusis layer 5 is by weight percentage on the PDC cutting pick head 2: diamond 80%～82%, silicon 6%～7%, cobalt 12%～13%.Referring to shown in Figure 6, in preferred embodiment, the joint face of hard alloy substrate 4 ends and dimond synneusis layer 5 is provided with one or more lug boss 6, these equally distributed lug bosses 6, it highly is 0.3～0.8mm, diameter is 0.8～1.5mm, and lug boss 6 and proximal surface are by arc transition.The even distribution of lug boss 6 on the interface, improved the contact area of hard alloy substrate 4 with dimond synneusis layer 5, thereby effectively strengthened the bond strength of dimond synneusis layer 5, improved the impact resistance of product, prolonged its application life with hard alloy substrate 4.Add man-hour in PDC cutting pick head 2, earlier diamond and metal powder material are mixed, stir formation diamond batch mixing by a certain percentage, preliminary treatment is carried out on surface to carbide alloy, form hard alloy substrate 4 after deoiling, remove surface oxide layer, then the diamond batch mixing is packed in the carbon pipe, pre-molding, the hard alloy substrate 4 of packing into carries out vacuum purification and handles; Next the carbon pipe after vacuum purification being handled is put into pyrophillite, and between the two ends of carbon pipe and pyrophillite conducting steel ring, titanium circle and carbon plate is set, and forms synthetic piece; The conducting steel ring two ends feed electric current in synthetic piece at last, with the carbon pipe as heater, thereby in building-up process, feed the electric current heating, be 50～200 seconds heat time heating time, synthesis pressure is 80～105Map, synthesis temperature is 1500～1600 ℃, in building-up process, to guarantee six alloys top hammer simultaneously from front, rear, left and right, upper and lower six direction pressurizes to synthetic piece, utilizes homemade cubic hinge press to accomplish.
Embodiment 2: as Fig. 4, shown in Figure 5, carry out the electroplated diamond processing by aforementioned electroplated diamond technology to welding intact carbide alloy pick, the alloy designations that the carbide alloy cutting pick head 2 of this pick adopts is YG13C, the material that pick handle 1 adopts is 42CrMo, and after heat treatment hardness reaches about HRC50.The grade that electroplated diamond adopts is that MBD6, granularity are 60/70: 70/80, feed intake in 2: 1 ratios.Pick after the plating the external surface (front portion) of pick handle 1 and carbide alloy cutting pick head 2 connecting portions with the form of bar uniform 6 electroplated diamond layers 3, the thickness of electroplated diamond layer 3 is 0.8mm, and the axial length of electroplated diamond layer 3 is than the long 10mm of welding hole.High abrasion-proof composite cutter bit of the present utility model, the PDC cutting pick head 2 that it comprises pick handle 1 and is connected in pick handle 1 end, this cutting pick head 2 comprise hard alloy substrate 4 and the dimond synneusis layer 5 that is fixed on hard alloy substrate 4 ends.In the present embodiment, further the external surface in pick handle 1 and PDC cutting pick head 2 links is provided with electroplated diamond layer 3, and the rib-like that electroplated diamond layer 3 is more than two or two is wrapped on the pick handle 1 whole excircle.PDC cutting pick head 2 adopts silver brazing or copper brazing or the interference of colding pressing is pressed into or hot pressing interference plunging is connected on the pick handle 1, and the electroplated diamond layer 3 of pick handle 1 is handled by conventional electroplated diamond, and the grade that electroplated diamond adopts is MBD
6, granularity is in 2: 1 ratio to feed intake at 70/80: 80/100, the thickness of electroplated diamond layer 3 is 0.6mm, the axial length of electroplated diamond layer 3 is than the long 10mm of welding hole.Wherein, the composition of dimond synneusis layer 5 is by weight percentage on the PDC cutting pick head 2: diamond 80%～82%, silicon 6%～7%, cobalt 12%～13%.Referring to shown in Figure 6, in preferred embodiment, the joint face of hard alloy substrate 4 ends and dimond synneusis layer 5 is provided with one or more lug boss 6, these equally distributed lug bosses 6, it highly is 0.3～0.8mm, diameter is 0.8～1.5mm, and lug boss 6 and proximal surface are by arc transition.The even distribution of lug boss 6 on the interface, improved the contact area of hard alloy substrate 4 with dimond synneusis layer 5, thereby effectively strengthened the bond strength of dimond synneusis layer 5, improved the impact resistance of product, prolonged its application life with hard alloy substrate 4.Add man-hour in PDC cutting pick head 2, earlier diamond and metal powder material are mixed, stir formation diamond batch mixing by a certain percentage, preliminary treatment is carried out on surface to carbide alloy, form hard alloy substrate 4 after deoiling, remove surface oxide layer, then the diamond batch mixing is packed in the carbon pipe, pre-molding, the hard alloy substrate 4 of packing into carries out vacuum purification and handles; Next the carbon pipe after vacuum purification being handled is put into pyrophillite, and between the two ends of carbon pipe and pyrophillite conducting steel ring, titanium circle and carbon plate is set, and forms synthetic piece; The conducting steel ring two ends feed electric current in synthetic piece at last, with the carbon pipe as heater, thereby in building-up process, feed the electric current heating, be 50～200 seconds heat time heating time, synthesis pressure is 80～105Map, synthesis temperature is 1500～1600 ℃, in building-up process, to guarantee six alloys top hammer simultaneously from front, rear, left and right, upper and lower six direction pressurizes to synthetic piece, utilizes homemade cubic hinge press to accomplish.
Referring to as shown in Figure 1, make method step of the present utility model and be:
(1), cutting pick head is welded in an end of pick handle, and carry out preliminary treatment;
(2), with the external surface of pick handle and cutting pick head link as surfacing, adopt 30～50% H earlier
2SO
4It is carried out anodic attack, through after the etch a little less than 10～20% the HCl, wash then with clear water;
(3), go into groove, with sand formation dlc protective layer on the knockout method;
(4), fill after seven hours last sand for the second time; Continue to fill then after seven hours, on sand for the third time; Continue to fill after eight hours last the 4th sand; Fill after eight hours last the 5th sand; After filling 12 hours, go out groove;
(5), under 200～400 ℃, be incubated 2～3 hours, finish dehydrogenation;
(6), remove nickel gold-plating, finishing surfacing.
Pretreated process is in step (1):
1., will weld good pick cleans up, dries with gasoline;
2., with cutting pick head with insulating paint brushing three times, with an end opposite on the pick handle with the cutting pick head link with insulating tape bag jail;
3., with the external surface that is connected an end on the alcohol wash pick handle with cutting pick head, and liquid honing washes with clear water then.
Wherein, in whole electroplating technology, its technological parameter is current density: 0.8～1.5A/dm
2, temperature: 28～35 ℃, pH value: 5.0～5.8, its electroplate liquid formulation is as shown in table 1 below:
Table 1:
Claims (4)
1, a kind of high abrasion-proof composite cutter bit, the cutting pick head (2) that it comprises pick handle (1) and is connected in pick handle (1) end is characterized in that: plating has electroplated diamond layer (3) on the external surface of described pick handle (1) and cutting pick head (2) link.
2, high abrasion-proof composite cutter bit according to claim 1 is characterized in that: described cutting pick head (2) comprises hard alloy substrate (4) and is compound in dimond synneusis layer (5) on hard alloy substrate (4) end.
3, high abrasion-proof composite cutter bit according to claim 2 is characterized in that: the joint face of described hard alloy substrate (4) end and dimond synneusis layer (5) is provided with one or more lug boss (6).
4, according to claim 1 or 2 or 3 described high abrasion-proof composite cutter bits, it is characterized in that: described electroplated diamond layer (3) is wrapped on the whole excircle of pick handle (1) or the rib-like that is more than two or two is wrapped on pick handle (1) excircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820052684XU CN201221359Y (en) | 2008-03-28 | 2008-03-28 | High abrasion-proof composite cutter bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820052684XU CN201221359Y (en) | 2008-03-28 | 2008-03-28 | High abrasion-proof composite cutter bit |
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| Publication Number | Publication Date |
|---|---|
| CN201221359Y true CN201221359Y (en) | 2009-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820052684XU Expired - Fee Related CN201221359Y (en) | 2008-03-28 | 2008-03-28 | High abrasion-proof composite cutter bit |
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| Country | Link |
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| CN (1) | CN201221359Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421990A (en) * | 2009-05-14 | 2012-04-18 | 桑德威克采矿和建筑有限责任公司 | Cutting tool for a mining machine |
-
2008
- 2008-03-28 CN CNU200820052684XU patent/CN201221359Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421990A (en) * | 2009-05-14 | 2012-04-18 | 桑德威克采矿和建筑有限责任公司 | Cutting tool for a mining machine |
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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: 20090415 Termination date: 20150328 |
|
| EXPY | Termination of patent right or utility model |