CN105201501A - Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine - Google Patents
Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine Download PDFInfo
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- CN105201501A CN105201501A CN201510585650.1A CN201510585650A CN105201501A CN 105201501 A CN105201501 A CN 105201501A CN 201510585650 A CN201510585650 A CN 201510585650A CN 105201501 A CN105201501 A CN 105201501A
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- tooth base
- tooth
- connecting portion
- pick
- resistant
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Abstract
The invention discloses a jacketed type abrasion-resistant tooth base used for a cutting tooth of a heading machine. The tooth base comprises a tooth base body, the lower portion of the tooth base body is provided with a connection portion, the connection portion is in arc connection with the tooth base body, and the included angle between the horizontal line where the bottom face of the connection portion is located and the middle line of the tooth base body is 42 degrees, so that the bending resistance of the tooth base is substantially improved, and the normal usage of the cutting tooth is guaranteed.
Description
Technical field
The present invention relates to pick technical field, be specifically related to the bushing type Wear-resistant tooth base of a kind of development machine pick.
Background technology
In prior art, mine, driving pick is key element on large-scale coal-winning machine and development machine, carbide alloy cutting pick head is welded with alloy steel together with (brazing) by general employing, it is mainly used in the digging field such as coal mining, tunnelling in coalfield, along with the growth increasingly of resource requirement, the use of large-scale mining machinery is more and more extensive, thus has higher requirement to the performance of digging pick.
At present, although the carbide alloy cutting pick head adopted has good anti-wear performance compared with steel, but the requirement in application life can not be met, and due to this kind of cutting-gear life not good, cause changing pick frequently, the efficiency of mining machinery can not be not fully exerted.Simultaneously, because cutting pick handle is prepared from by materials such as alloy steels, thus make cutting pick handle pole not wear-resisting, make too early the coming off of carbide alloy cutting pick head, whole pick is caused to damage inefficacy in advance, adopt traditionally cutting pick handle heat-treated or at cutting pick handle surface overlaying one deck wear resistance electrode to increase abrasion resistance, to reach gauge object, DeGrain.
Summary of the invention
It is good that technical problem to be solved by this invention is to provide a kind of intensity, the bushing type Wear-resistant tooth base of development machine pick that the life-span is long.
Technical problem to be solved by this invention realizes by the following technical solutions:
The bushing type Wear-resistant tooth base of a kind of development machine pick, comprise toothholder body, described toothholder body lower part is provided with connecting portion, between described connecting portion with toothholder body, arc is connected, the angle that the horizon at place, described connecting portion bottom surface and the center line of toothholder body are is 42 degree, toothholder anti-bending strength is increased substantially, ensure that the normal use of pick;
Described connecting portion is roughly in sector structure.
There is cermet material on described toothholder body and connecting portion surface all cladding, and form cermet coating, described cermet material is made up of the component of following mass percent:
Adopt the method for above-mentioned cermet material cladding pick box, step is as follows:
1) above-mentioned ceramic materials mixing is all obtained cermet composition;
2) above-mentioned cermet composition pressing mold is obtained green compact, at the temperature of 200-350 DEG C, toast 40-60 minute;
3) green compact after baking are carried out isostatic sintering under oxygen free condition, sintering pressure is 100-400MPa, and sintering temperature is 1600-2000 DEG C;
4) by sintering after green compact grind, granularity is 15 ~ 45 μm, and then by metal ceramic powder in drying box about 150 DEG C dry;
5) ratio that is mixed into that the metal ceramic powder after baking and cementing agent stirred is the paste mixture of 3:1 (mass ratio), evenly be coated in pick box, precoating powder thickness is 5mm, then inserts less than 80 DEG C oven dry or natural air drying in drying box;
6) pick preset is placed on the lathe of laser instrument, carry out Laser Cladding Treatment, laser cladding technological parameter is: power is 1.7 ~ 1.8kw, laser scanning speed 200 ~ 500mm/s, overlapping rate 30% ~ 40%, spot diameter 5mm, contextual analysis of organization finds, laser macro morphology cladding layer is smooth, fine and close, zero defect; The defects such as microstructure of surface cladding layer interior solid, pore-free and crackle.
The invention has the beneficial effects as follows: structure of the present invention is simple, reasonable in design, use force analysis according to pick, the overall bending resistance of pick box is significantly promoted, guarantees the normal work of pick; Simultaneously by deposited metals ceramic materials, make that pick box hardness is high, abrasion resistance good, its heat stability, thermal conductivity, elevated temperature strength etc. all have a clear superiority in; It can at high temperature continuous rapid operation, enhances productivity.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete accompanying drawing, setting forth the present invention further.
Embodiment 1
See Fig. 1: the bushing type Wear-resistant tooth base of a kind of development machine pick, comprise toothholder body 1, described toothholder body 1 bottom is provided with connecting portion 2, described connecting portion 2 is connected with arc between toothholder body 1, the angle that the horizon at place, described connecting portion 2 bottom surface and the center line of toothholder body 1 are is 42 degree, toothholder anti-bending strength is increased substantially, ensure that the normal use of pick; Described connecting portion 2 is roughly in sector structure.
Embodiment 2
See Fig. 1: the bushing type Wear-resistant tooth base of a kind of development machine pick, comprise toothholder body 1, described toothholder body 1 bottom is provided with connecting portion 2, described connecting portion 2 is connected with arc between toothholder body 1, the angle that the horizon at place, described connecting portion 2 bottom surface and the center line of toothholder body 1 are is 42 degree, toothholder anti-bending strength is increased substantially, ensure that the normal use of pick; Described connecting portion 2 is roughly in sector structure.
There is cermet material on described toothholder body and connecting portion surface all cladding, and form cermet coating, described cermet material is made up of the component of following mass percent:
Adopt the method for above-mentioned cermet material cladding pick box, step is as follows:
1) above-mentioned ceramic materials mixing is all obtained cermet composition;
2) above-mentioned cermet composition pressing mold is obtained green compact, at the temperature of 200-350 DEG C, toast 40-60 minute;
3) green compact after baking are carried out isostatic sintering under oxygen free condition, sintering pressure is 100-400MPa, and sintering temperature is 1600-2000 DEG C;
4) by sintering after green compact grind, granularity is 15 ~ 45 μm, and then by metal ceramic powder in drying box about 150 DEG C dry;
5) ratio that is mixed into that the metal ceramic powder after baking and cementing agent stirred is the paste mixture of 3:1 (mass ratio), evenly be coated in pick box, precoating powder thickness is 5mm, then inserts less than 80 DEG C oven dry or natural air drying in drying box;
6) pick preset is placed on the lathe of laser instrument, carry out Laser Cladding Treatment, laser cladding technological parameter is: power is 1.7 ~ 1.8kw, laser scanning speed 200 ~ 500mm/s, overlapping rate 30% ~ 40%, spot diameter 5mm, contextual analysis of organization finds, laser macro morphology cladding layer is smooth, fine and close, zero defect; The defects such as microstructure of surface cladding layer interior solid, pore-free and crackle.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and manual just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the bushing type Wear-resistant tooth base of development machine pick, comprise toothholder body, described toothholder body lower part is provided with connecting portion, it is characterized in that, between described connecting portion with toothholder body, arc is connected, and the angle that the horizon at place, described connecting portion bottom surface and the center line of toothholder body are is 42 degree.
2. the bushing type Wear-resistant tooth base of development machine pick according to claim 1, is characterized in that, described connecting portion is roughly in sector structure.
3. the bushing type Wear-resistant tooth base of development machine pick according to claim 1, is characterized in that, there is cermet material on described toothholder body and connecting portion surface all cladding, form cermet coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585650.1A CN105201501A (en) | 2015-09-15 | 2015-09-15 | Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585650.1A CN105201501A (en) | 2015-09-15 | 2015-09-15 | Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105201501A true CN105201501A (en) | 2015-12-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510585650.1A Pending CN105201501A (en) | 2015-09-15 | 2015-09-15 | Jacketed type abrasion-resistant tooth base used for cutting tooth of heading machine |
Country Status (1)
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| CN (1) | CN105201501A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171069A (en) * | 1994-12-23 | 1998-01-21 | 钴碳化钨硬质合金公司 | Composite cermet articles and method of making |
| CN101338428A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Strengthen process for pick head by laser fusing and coating wear-resistant coating |
| EP2021581A2 (en) * | 2006-05-08 | 2009-02-11 | Sandvik Intellectual Property AB | Cutting tool and method of assembling the cutting tool |
| CN201416446Y (en) * | 2008-11-14 | 2010-03-03 | 段波 | self-rotating pick-shaped cutter |
| EP2318656A1 (en) * | 2008-09-05 | 2011-05-11 | Wirtgen GmbH | Chisel holder having a weld as a wear protection element |
| CN201857968U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Pickax-shaped cutting pick |
| CN201857966U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Cutter |
| US20110148179A1 (en) * | 2009-12-17 | 2011-06-23 | Wirtgen Gmbh | Bit Holder And Base Part For Receiving A Bit Holder |
| CN202194661U (en) * | 2011-08-26 | 2012-04-18 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond enhanced cutting tooth |
| CN103038446A (en) * | 2010-07-30 | 2013-04-10 | 山特维克知识产权股份有限公司 | Metal matrix composite mining pick and method of making |
-
2015
- 2015-09-15 CN CN201510585650.1A patent/CN105201501A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171069A (en) * | 1994-12-23 | 1998-01-21 | 钴碳化钨硬质合金公司 | Composite cermet articles and method of making |
| EP2021581A2 (en) * | 2006-05-08 | 2009-02-11 | Sandvik Intellectual Property AB | Cutting tool and method of assembling the cutting tool |
| CN101338428A (en) * | 2008-08-07 | 2009-01-07 | 沈阳大陆激光成套设备有限公司 | Strengthen process for pick head by laser fusing and coating wear-resistant coating |
| EP2318656A1 (en) * | 2008-09-05 | 2011-05-11 | Wirtgen GmbH | Chisel holder having a weld as a wear protection element |
| CN201416446Y (en) * | 2008-11-14 | 2010-03-03 | 段波 | self-rotating pick-shaped cutter |
| US20110148179A1 (en) * | 2009-12-17 | 2011-06-23 | Wirtgen Gmbh | Bit Holder And Base Part For Receiving A Bit Holder |
| CN103038446A (en) * | 2010-07-30 | 2013-04-10 | 山特维克知识产权股份有限公司 | Metal matrix composite mining pick and method of making |
| CN201857968U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Pickax-shaped cutting pick |
| CN201857966U (en) * | 2010-10-15 | 2011-06-08 | 吕增和 | Cutter |
| CN202194661U (en) * | 2011-08-26 | 2012-04-18 | 河南四方达超硬材料股份有限公司 | Polycrystalline diamond enhanced cutting tooth |
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Application publication date: 20151230 |