CN202544847U - Cutting pick - Google Patents
Cutting pick Download PDFInfo
- Publication number
- CN202544847U CN202544847U CN201220181824XU CN201220181824U CN202544847U CN 202544847 U CN202544847 U CN 202544847U CN 201220181824X U CN201220181824X U CN 201220181824XU CN 201220181824 U CN201220181824 U CN 201220181824U CN 202544847 U CN202544847 U CN 202544847U
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- pick
- denticle
- hard alloy
- tungsten carbide
- working blade
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Abstract
The utility model discloses a cutting pick, comprising a pick body and a hard alloy working blade, wherein the top of the pick body is a plane and the hard alloy working blade is a cone-shaped body; a conical bottom of the hard alloy working blade is combined with a plane of the top of the pick body is fixed by welding; and the head of the pick body and the hard alloy working blade are provided with one layer of a tungsten carbide coating. According to the cutting pick disclosed by the utility model, the tungsten carbide coating has an excellent wear resistance to better protect the pick body, so that the pick body made of hard alloy is not abraded in the operating process, and the service life of the cutting pick is greatly prolonged; the huge waste of a hard alloy, which is caused by that the pick body is directly contacted with a work medium and is rapidly abraded so that the hard alloy working blade is easy to drop in the work process of the cutting pick produced by a traditional production manner, is changed; and therefore, the utilization rate of tungsten carbide and the hard alloy is improved.
Description
Technical field
The utility model relates to cutting element, relates in particular to a kind of pick.
Background technology
Pick is a kind of cutting element that is widely used in equipment such as coal-winning machine, road breaking machine.Pick comprises denticle and the carbide alloy work edge that is welded on the denticle top; In the traditional diamond-making technique; For preventing the improper inefficacy of carbide alloy, need on denticle top and the corresponding position of carbide alloy with melting mode built-up welding one deck high-abrasive material, to reduce the denticle rate of wear.Welding manner comprises arc welding, gas shielded arc welding, plasma welding, Laser Welding and gas flame welding etc.These processing method working conditions are abominable, production efficiency is low; And, because melting is under the condition that surface of the work and resurfacing welding material melt simultaneously, to carry out, workpiece heating temperature height; Its metallographic structure is uncontrollable; Be easy to generate that metal grain is grown up and intergranular oxidation, reduced the comprehensive mechanical performance of workpiece, cause improper inefficacies such as brittle fracture easily.In addition, above-mentioned technology only is applicable to ferrio wear-resistant material such as rich chromium cast iron etc., and its anti-wear performance can't satisfy the requirement of denticle and carbide alloy sync fail.
Traditional wear-resistant coating generally is made up of Ni-based, iron-based, Co-based alloy powder, can only satisfy simple technical requirements (as wear-resisting, high temperature resistant etc.).The Co-based alloy powder fusing point is low and differ greatly with the steel body heat coefficient of expansion, is difficult for being prepared in surface of the work, very easily cracks after the heat treatment, and cost is also high.The coating that the conventional iron-based alloys powder forms can produce phenomenon such as come off under the hot operation condition, the characteristic of easy oxidation deactivation is arranged.Though it is Ni-based that Co-based alloy powder is superior on performance.Iron(-)base powder, but cobalt belongs to precious metal, and fusing point is too high, should not be used for actual production.Common is Ni-based.The angle of wetting of iron(-)base powder and metal carbides is bigger, does not reach between liquid phase and the solid phase fully to soak into, and makes coating non-densifying, causes coating loose.
The utility model content
The technical problem that the utility model mainly solves provides a kind of wear-resisting, pick with good comprehensive mechanical performance.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of pick is provided; Comprise denticle and carbide alloy work edge, said denticle top is the plane, and said carbide alloy work edge is a bullet; Combine with said denticle top plan at the bottom of the awl of said carbide alloy work edge and fixing through welding, said denticle head and said carbide alloy work edge are provided with one deck tungsten carbide coating.
Wherein, said tungsten carbide coating is prepared on said denticle and the carbide alloy work edge through sintering processing.
Wherein, the adhesion strength of said tungsten carbide coating and said denticle is 320～460MPa.
Wherein, the said denticle head that is provided with tungsten carbide coating accounts for 12%～16% of denticle total length.
The beneficial effect of the utility model is: in the pick of the utility model; Tungsten carbide coating has more excellent anti-wear performance; The denticle head is directly to contact working media with the carbide alloy work edge at work; Protected denticle well through tungsten carbide coating being set, denticle and the work edge processed by carbide alloy can not worn and not torn in the course of the work, increased substantially the application life of pick in this part; Change pick that the traditional mode of production mode produces directly contacts the carbide alloy that the working media rapid wearing causes the carbide alloy work edge to come off causing in the course of the work owing to denticle huge waste, improved the utilization rate of tungsten carbide, carbide alloy; Show that through the actual result that uses adopt the pick structure of the utility model to compare pick in the past, the life-span has been improved 2～5 times.
Description of drawings
Fig. 1 is the structural representation of pick one embodiment of the utility model.
Among the figure:
1, denticle; 2, carbide alloy work edge; 3, tungsten carbide coating.
The specific embodiment
By the technology contents, the structural feature that specify the utility model, realized purpose and effect, know clearly below in conjunction with embodiment and conjunction with figs. and give explanation.
See also Fig. 1, the utility model proposes a kind of pick, comprises denticle 1 and carbide alloy work edge 2; Denticle 1 is a column structure, and its underpart is roughly cylindrical shape, and top is roughly wedge structure; The top is the plane, and carbide alloy work edge 2 is a bullet, combines with denticle 1 top plan at the bottom of the awl of carbide alloy work edge 2 and fixing through welding; Denticle 1 head and carbide alloy work edge 2 are provided with one deck tungsten carbide coating 3, and denticle 1 head is directly to contact working media with carbide alloy work edge 2 when working, in general; The denticle head accounts for 12%～16% of denticle length overall, in this part tungsten carbide coating 3 is set, and has increased the anti-wear performance of denticle.More excellent ground, this tungsten carbide coating is prepared on denticle and the carbide alloy work edge through sintering processing, and sintering process is with vacuum or inert gas shielding.Sintering processing is existing technology mode; Particularly; When sintering, can adopt the coefficient of expansion and the approaching cementing agent of steel; And the interpolation metal ceramic powder prepares tungsten carbide coating 3 with prefabrication system at the denticle top, carry out then Fast Sintering (moment superhigh temperature Fast Sintering mode) with powder smelting and sintering on the denticle surface.The fusing point of cementing agent should be lower than the fusing point of denticle; And good bonding force is arranged with tungsten carbide, denticle; The heating-up temperature between; Cementing agent fusing, denticle do not melt during heating, are similar to the molten mutually and diffusion process of soldering between tungsten carbide coating and the denticle, and the cooling back forms firm metallurgical binding.
In the present embodiment, the adhesion strength of tungsten carbide coating and denticle is 320～460Mpa, compares and existing wear-resistant coating and denticle, has increased adhesion strength in the present embodiment greatly, prevents that tungsten carbide coating from coming off, and increases the application life of pick.
In an application example, adopt the pick structure of the utility model, the denticle material adopts 42CrMo, and the tooth head of denticle (denticle top) hardness is greater than 44HRC, and tooth handle (tooth head bottom) hardness is greater than 38HRC, and coating hardness is 55～60HRC.Technical indicator all is superior to traditional pick.
In the pick of the utility model; Tungsten carbide coating has more excellent anti-wear performance; The denticle head is directly to contact working media with the carbide alloy work edge at work; Protected denticle well through tungsten carbide coating being set, denticle and the work edge processed by carbide alloy can not worn and not torn in the course of the work, increased substantially the application life of pick in this part; Change pick that the traditional mode of production mode produces directly contacts the carbide alloy that the working media rapid wearing causes the carbide alloy work edge to come off causing in the course of the work owing to denticle huge waste, improved the utilization rate of tungsten carbide, carbide alloy; Show that through the actual result that uses adopt the pick structure of the utility model to compare pick in the past, the life-span has been improved 2～5 times.
The above is merely the embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model manual and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the utility model.
Claims (4)
1. pick; It is characterized in that; Comprise denticle and carbide alloy work edge, said denticle top is the plane, and said carbide alloy work edge is a bullet; Combine with said denticle top plan at the bottom of the awl of said carbide alloy work edge and fixing through welding, said denticle head and said carbide alloy work edge are provided with one deck tungsten carbide coating.
2. pick according to claim 1 is characterized in that: said tungsten carbide coating is prepared on said denticle and the carbide alloy work edge through sintering processing.
3. pick according to claim 2 is characterized in that: the adhesion strength of said tungsten carbide coating and said denticle is 320～460MPa.
4. according to each described pick of claim 1-3, it is characterized in that: the said denticle head that is provided with tungsten carbide coating accounts for 12%～16% of denticle total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220181824XU CN202544847U (en) | 2012-04-25 | 2012-04-25 | Cutting pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220181824XU CN202544847U (en) | 2012-04-25 | 2012-04-25 | Cutting pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202544847U true CN202544847U (en) | 2012-11-21 |
Family
ID=47165499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220181824XU Expired - Fee Related CN202544847U (en) | 2012-04-25 | 2012-04-25 | Cutting pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202544847U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420873A (en) * | 2013-09-03 | 2015-03-18 | 山东天工岩土工程设备有限公司 | Novel pick-shaped cutter |
| CN106457400A (en) * | 2014-04-30 | 2017-02-22 | 山特维克知识产权股份有限公司 | A wear resistant component and a device for mechanical decomposition of material provided with such a component |
| CN106593439A (en) * | 2016-11-30 | 2017-04-26 | 安徽省皖江机电设备制造有限公司 | High-abrasion-resistance and high-impact-resistance mining cutting teeth and machining method thereof |
-
2012
- 2012-04-25 CN CN201220181824XU patent/CN202544847U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104420873A (en) * | 2013-09-03 | 2015-03-18 | 山东天工岩土工程设备有限公司 | Novel pick-shaped cutter |
| CN106457400A (en) * | 2014-04-30 | 2017-02-22 | 山特维克知识产权股份有限公司 | A wear resistant component and a device for mechanical decomposition of material provided with such a component |
| CN106593439A (en) * | 2016-11-30 | 2017-04-26 | 安徽省皖江机电设备制造有限公司 | High-abrasion-resistance and high-impact-resistance mining cutting teeth and machining method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121121 Termination date: 20140425 |