CN220036660U - Cutting pick with metal ceramic composite wear-resistant layer on tooth head - Google Patents
Cutting pick with metal ceramic composite wear-resistant layer on tooth head Download PDFInfo
- Publication number
- CN220036660U CN220036660U CN202320170600.7U CN202320170600U CN220036660U CN 220036660 U CN220036660 U CN 220036660U CN 202320170600 U CN202320170600 U CN 202320170600U CN 220036660 U CN220036660 U CN 220036660U
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- Prior art keywords
- pick
- cutting
- cutting pick
- composite wear
- wear layer
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- 238000005520 cutting process Methods 0.000 title claims abstract description 89
- 239000002131 composite material Substances 0.000 title claims abstract description 46
- 239000000919 ceramic Substances 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 239000011195 cermet Substances 0.000 claims abstract description 21
- 210000001624 hip Anatomy 0.000 claims description 30
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 150000001875 compounds Chemical class 0.000 abstract 3
- 238000000034 method Methods 0.000 description 8
- 238000005245 sintering Methods 0.000 description 6
- 229910000746 Structural steel Inorganic materials 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004372 laser cladding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000779819 Syncarpia glomulifera Species 0.000 description 1
- GTXJWVZUCBQACF-UHFFFAOYSA-N [Mn].[Si].[Pt] Chemical compound [Mn].[Si].[Pt] GTXJWVZUCBQACF-UHFFFAOYSA-N 0.000 description 1
- GYIFSXKTFMKQNG-UHFFFAOYSA-N [Si][Mn][Cr] Chemical compound [Si][Mn][Cr] GYIFSXKTFMKQNG-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 description 1
- HBXWYZMULLEJSG-UHFFFAOYSA-N chromium vanadium Chemical compound [V][Cr][V][Cr] HBXWYZMULLEJSG-UHFFFAOYSA-N 0.000 description 1
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
Abstract
The utility model provides a cutting pick with a metal ceramic composite wear-resistant layer on a pick head, which comprises: the bottom end of the tooth handle is used for being inserted into the pick box and fixedly connected with the pick box; the cutting pick body is fixed at the top end of the tooth handle and comprises a cutting pick blind hole formed in the top end of the cutting pick body, a cutting pick waist arranged on the side wall of the cutting pick body and a cutting pick bottom arranged at the bottom of the cutting pick body, wherein the cutting pick waist is coated with a metal ceramic composite wear-resistant layer; the carbide cutting edge portion, the bottom of carbide cutting edge portion with pick blind hole interference fit, the top of carbide cutting edge portion is equipped with the prong, the pick that the prong has the compound wearing layer of cermet adopts the compound wearing layer of cermet, can improve the wearability of pick to the compound wearing layer of cermet is difficult for droing.
Description
Technical Field
The utility model relates to the technical field of tunneling tools, in particular to a cutting pick with a tooth head provided with a metal ceramic composite wear-resistant layer.
Background
In mining and excavating of mines, large-scale construction machines such as a heading machine and a mining machine are generally used for mechanized mining, a cutting pick is a main tool used in mining and excavating engineering, the cutting pick is mostly composed of a steel tooth body and a hard alloy blade embedded at the head of the tooth body and is arranged on a roller tooth seat of the heading machine for crushing and cutting coal beds, coal gangue or concrete and asphalt pavement, and the head of the tooth body is rapidly reduced due to severe friction generated during tunneling work, so that the hard alloy blade loses protection and clamping of the tooth body and falls off, and the cutting pick is scrapped in advance, so that the service life of the cutting pick is prolonged, and a common treatment means at present is to prepare a wear-resistant coating at the head of the tooth body.
The prior art generally adopts the processes of manual arc welding, plasma spraying, supersonic spraying, laser cladding and the like to prepare the wear-resistant layer, and the manual arc welding process has extremely low production efficiency and general wear resistance; the plasma spraying and supersonic spraying processes are complex, and the coating density is low, so that the wear resistance is poor, and the bonding strength of the spraying layer and the matrix is low, so that the spraying layer is easy to fall off; the laser cladding process has high equipment value and extremely low production efficiency, is not suitable for batch production, and in addition, the forming processes have higher heating temperature, so that the thick metallographic structure of the tooth body is inevitably caused, and the comprehensive mechanical property of the cutting pick is greatly reduced.
For example, chinese patent application No. CN202221020496.5 discloses a novel coal cutter pick comprising a shank, a head and a shank; the tooth body is arranged in a conical shape, a tooth head mounting hole is formed in the conical head of the tooth body, and the tooth head is mounted in the tooth head mounting hole; the cone tail of the tooth body is connected with the tooth handle; and a wear-resistant layer is arranged on the outer side wall of the tooth body, which is close to the cone head.
Above-mentioned prior art is through having the wearing layer on the lateral wall of tooth body awl end welding to the pick is protected to improve the wearability of pick.
In the actual construction process, the prior art exists:
the abrasion resistance of the welded abrasion-resistant layer is insufficient, the bonding strength of the abrasion-resistant layer and the matrix is low, the abrasion-resistant layer is easy to fall off, and the purpose of protecting the cutting pick cannot be achieved.
Based on the technical problems in the prior art, the utility model provides a cutting pick with a metal ceramic composite wear-resistant layer.
Disclosure of Invention
The utility model provides a cutting pick with a metal ceramic composite wear-resistant layer on a pick head.
The utility model adopts the following technical scheme:
a cutting pick having a tip with a cermet composite wear layer, comprising:
the bottom end of the tooth handle is used for being inserted into the pick box and fixedly connected with the pick box;
the cutting pick body is fixed at the top end of the tooth handle and comprises a cutting pick blind hole formed in the top end of the cutting pick body, a cutting pick waist arranged on the side wall of the cutting pick body and a cutting pick bottom arranged at the bottom of the cutting pick body, wherein the cutting pick waist is coated with a metal ceramic composite wear-resistant layer;
the cutting pick comprises a hard alloy blade part, wherein the bottom end of the hard alloy blade part is in interference fit with the cutting pick blind hole, and the top of the hard alloy blade part is provided with a tooth tip.
Further, the tooth handle comprises a first shaft handle fixedly connected with the cutting pick body and a second shaft handle fixedly connected with the first shaft handle, an annular groove is formed in the second shaft handle, and the outer diameter of the first shaft handle is larger than that of the second shaft handle.
Further, the tooth tip is cone-shaped.
Further, the tooth tip is triangular pyramid.
Further, the tooth tip is a quadrangular pyramid.
Further, the pick waists comprise a pick first waisted portion and a pick second waisted portion disposed at a lower end of the pick first waisted portion.
Further, a plurality of embedded grooves which are communicated transversely and longitudinally are formed in the first waist of the cutting pick.
Further, a plurality of embedded grooves which are communicated transversely and longitudinally are arranged on the second waist of the cutting pick.
Further, the cermet composite wear layer is coated on the first waist of the cutting pick.
Further, the cermet composite wear layer is coated on the second waist of the cutting pick.
Further, the cermet composite wear layer is coated on the first waist of the cutting pick and the second waist of the cutting pick.
Further, a plurality of elliptic grooves are formed in the side face of the tooth tip, and the grooves are uniformly distributed at the same height of the tooth tip.
Further, a plurality of elliptic bulges are arranged on the side surface of the tooth tip.
Further, a plurality of protrusions are arranged on the waist of the cutting pick.
Further, a plurality of grooves are formed in the waist of the cutting pick, and the grooves are formed between every two adjacent protrusions.
Compared with the prior art, the utility model has the advantages that:
according to the cutting pick with the metal ceramic composite wear-resistant layer, the waist part, the bottom part and the metal ceramic composite wear-resistant layer are arranged in a matching manner, so that the wear resistance of the cutting pick body can be improved, and the metal ceramic composite wear-resistant layer can be prevented from falling off.
Drawings
FIG. 1 is a schematic view of a cutting pick having a bit with a cermet composite wear layer in accordance with an embodiment of the present utility model;
FIG. 2 is a schematic view of a tip and pick waist in an embodiment of the utility model;
fig. 3 is a schematic structural view of a stopper according to an embodiment of the present utility model.
In the figure, 1-tooth handle, 11-first shaft handle, 12-second shaft handle, 13-annular groove, 2-pick body, 21-pick blind hole, 22-pick waist, 221-pick first waist, 222-pick second waist, 2221-dog, 23-pick bottom, 3-carbide blade, 31-tooth tip, 311-ellipse-shaped groove, 312-ellipse-shaped protrusion.
Detailed Description
In order that the above-recited objects, features and advantages of the present utility model can be more clearly understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, it being understood that embodiments of the utility model and features of the embodiments may be combined with each other without departing from the scope of the appended claims.
Examples
As shown in fig. 1, the cutting pick with the metal ceramic composite wear layer comprises:
the cutting pick comprises a tooth handle 1, wherein the bottom end of the tooth handle 1 is used for being inserted into a cutting pick box and fixedly connected with the cutting pick box;
the cutting pick body 2 is fixed at the top end of the tooth handle 1, the cutting pick body 2 comprises a cutting pick blind hole 21 formed at the top end of the cutting pick body 2, a cutting pick waist 22 formed on the side wall of the cutting pick body 2 and a cutting pick bottom 23 formed at the bottom of the cutting pick body 2, and the cutting pick waist 22 is coated with a metal ceramic composite wear-resistant layer (not shown in the figure);
the cutting pick comprises a hard alloy blade part 3, wherein the bottom end of the hard alloy blade part 3 is in interference fit with the cutting pick blind hole 21, and the top of the hard alloy blade part 3 is provided with a tooth tip 31;
in the above embodiment, the metal ceramic composite wear-resistant layer is coated on the pick waist 22 by adopting an electroplating mode;
the pick body 2 is made of chromium-nickel-molybdenum structural steel, chromium-vanadium structural steel, chromium-manganese-silicon structural steel or silicon-manganese-platinum structural steel;
the hard alloy blade part 3 is made of tungsten-cobalt alloy;
the cemented carbide blade 3 is brazed in the pick blind bore 21.
The metal ceramic composite wear-resistant layer comprises a base layer and a bonding layer, wherein the base layer is composed of powdery tungsten carbide, titanium carbide and trace niobium, turpentine is added into powdery base layer materials, and the powder base layer materials are bonded on the cutting pick body 2 after being mixed by a ball mill; the bonding layer is formed by sintering three hard materials, namely tungsten carbide-titanium carbide-niobium carbide, and the cutting pick body 2 coated with the base layer by adopting a super solid phase liquid state rapid sintering process, the density of a hard phase of the wear-resistant layer is improved by adopting a super solid phase liquid state rapid sintering technology, the metal ceramic composite wear-resistant layer and the cutting pick body 2 are metallurgically bonded, the wear-resistant layer is prevented from falling off due to strong impact, the sintering temperature of the metal ceramic composite wear-resistant layer is low, and no metal metallographic crystal grain growth phenomenon occurs in the sintering process;
the bonding layer adopts Fe 3 W 3 C；
The composite sintering temperature of the metal ceramic is 1150-1180 ℃.
The tooth handle 1 comprises a first shaft handle 11 fixedly connected to the cutting pick body 2 and a second shaft handle 12 fixedly connected to the first shaft handle 11, an annular groove 13 is formed in the second shaft handle 12, and the outer diameter of the first shaft handle 11 is larger than that of the second shaft handle 12;
in the above embodiment, the cross sections of the first mandrel 11 and the second mandrel 12 are both circular.
The tooth tip 31 is conical;
the tooth tip 31 is triangular pyramid;
the tooth tip 31 is a quadrangular pyramid;
the pick waisted portion 22 comprises a pick first waisted portion 221 and a pick second waisted portion 222 arranged at the lower end of the pick first waisted portion 221;
the cermet composite wear layer can be coated on the pick first waist 221;
the cermet composite wear layer can be coated on the pick second waist 222;
the cermet composite wear layer can be coated on the pick first waisted 221 and the pick second waisted 222;
in the above embodiment, the coating position of the metal ceramic composite wear layer is determined according to the specific wear position of the pick body 2;
as an alternative, the pick body 2 is also entirely coated with the cermet composite wear layer;
as an improvement, a plurality of grooves are etched on specific positions coated with the metal ceramic composite wear-resistant layer, so that the metal ceramic composite wear-resistant layer and the cutting pick body 2 are combined more tightly.
As shown in fig. 2, a plurality of elliptical grooves 311 are formed on the side surface of the tooth tip 31, and the grooves 311 are uniformly distributed at the same height of the tooth tip 31;
a plurality of elliptic bulges 312 are arranged on the side surface of the tooth tip 31;
a plurality of bulges are arranged on the pick waist 22;
the pick waists 22 are provided with a plurality of grooves which are arranged between each adjacent projections.
As shown in fig. 3, a plurality of stop blocks 2221 are fixed on the second waist 222 of the cutting pick in a welding manner, and the stop blocks 2221 are arranged on the same height of the second waist 222 of the cutting pick;
in this embodiment, the stop 2221 has 6 blocks disposed in an annular array on the pick second waist 222;
in the actual tunneling operation, the stop 2221 protrudes from the metal ceramic composite wear-resistant layer, which can enhance the self-rotation performance of the pick body 2, prevent eccentric wear, and protect the metal ceramic composite wear-resistant layer.
The present utility model is not limited to the above-described embodiments, and the above-described embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims.
Claims (10)
1. A cutting pick having a tip with a cermet composite wear layer, comprising:
the bottom end of the tooth handle is used for being inserted into the pick box and fixedly connected with the pick box;
the cutting pick body is fixed at the top end of the tooth handle and comprises a cutting pick blind hole formed in the top end of the cutting pick body, a cutting pick waist arranged on the side wall of the cutting pick body and a cutting pick bottom arranged at the bottom of the cutting pick body, wherein the cutting pick waist is coated with a metal ceramic composite wear-resistant layer;
the cutting pick comprises a hard alloy blade part, wherein the bottom end of the hard alloy blade part is in interference fit with the cutting pick blind hole, and the top of the hard alloy blade part is provided with a tooth tip.
2. The cutting pick with a metal ceramic composite wear layer for a pick head according to claim 1, wherein the pick shank comprises a first shank fixedly connected to the pick body, a second shank fixedly connected to the first shank, an annular groove is provided on the second shank, and an outer diameter of the first shank is larger than an outer diameter of the second shank.
3. The cutting pick having a cermet composite wear layer on the tip of claim 1, wherein the tip is cone-shaped.
4. The pick having a cermet composite wear layer of claim 1 wherein the pick waisted portion comprises a pick first waisted portion and a pick second waisted portion disposed at a lower end of the pick first waisted portion.
5. The cutting pick having a cermet composite wear layer on the pick head of claim 4, wherein the cermet composite wear layer is coated on the first shank portion of the cutting pick.
6. The cutting pick having a cermet composite wear layer on the pick head of claim 4, wherein the cermet composite wear layer is coated on the pick second shank.
7. The cutting pick having a cermet composite wear layer of claim 4 wherein the cermet composite wear layer is coated on the pick first and second waists.
8. A cutting pick with a metal-ceramic composite wear layer on a pick head according to claim 3, wherein a plurality of oval grooves are provided on the side of the tip, the grooves being evenly arranged at the same height of the tip.
9. The cutting pick with a metal-ceramic composite wear layer on the tip of claim 8, wherein the side of the tip is provided with a plurality of oval projections.
10. The cutting pick with a metal ceramic composite wear layer on the pick head according to claim 9, wherein a plurality of protrusions are arranged on the pick waist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170600.7U CN220036660U (en) | 2023-02-09 | 2023-02-09 | Cutting pick with metal ceramic composite wear-resistant layer on tooth head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170600.7U CN220036660U (en) | 2023-02-09 | 2023-02-09 | Cutting pick with metal ceramic composite wear-resistant layer on tooth head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220036660U true CN220036660U (en) | 2023-11-17 |
Family
ID=88728127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320170600.7U Active CN220036660U (en) | 2023-02-09 | 2023-02-09 | Cutting pick with metal ceramic composite wear-resistant layer on tooth head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220036660U (en) |
-
2023
- 2023-02-09 CN CN202320170600.7U patent/CN220036660U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |