CN216477326U - High-wear-resistance cutting pick with surface containing superhard wear-resistant particles - Google Patents
High-wear-resistance cutting pick with surface containing superhard wear-resistant particles Download PDFInfo
- Publication number
- CN216477326U CN216477326U CN202121525158.2U CN202121525158U CN216477326U CN 216477326 U CN216477326 U CN 216477326U CN 202121525158 U CN202121525158 U CN 202121525158U CN 216477326 U CN216477326 U CN 216477326U
- Authority
- CN
- China
- Prior art keywords
- tooth
- head
- hard
- wear
- cutting pick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a high-wear-resistance cutting pick with superhard wear-resistant particles on the surface, which solves the problem of insufficient wear resistance of the existing cutting pick. The gear comprises a gear body and a hard alloy head, wherein the gear body comprises a gear handle, a gear root and a gear head which are integrally formed from bottom to top, the hard alloy head is welded and fixed at the center of the top end of the gear head, the hard alloy head, the gear root and the gear handle are positioned on the same axis, and a hard metallurgical layer is arranged on the outer wall of the gear head from top to bottom at the height of 1/3-2/3. According to the cutting pick, the hard metallurgical layer is arranged on the pick head to improve the wear resistance of the cutting pick, the hard metallurgical layer can effectively protect the pick body of the cutting pick, and meanwhile, the phenomenon that the hard metallurgical head falls off due to insufficient wear resistance of the pick body is improved; in addition, the superhard wear-resistant particles in the hard metallurgical layer are exposed outside, so that the sharpness of the cutting pick can be increased, and the working efficiency of the cutting pick is improved.
Description
Technical Field
The utility model relates to the technical field of excavating tools, in particular to a high-wear-resistance cutting pick with a surface containing superhard wear-resistance particles.
Background
The cutting pick is a mining tool, can be matched with a coal mining machine, a heading machine and the like for use, becomes a quick-wear part with the largest replacement amount in the actual operation of the coal mining machine and the heading machine due to the complex and severe working environment, and is widely applied at present and mainly comprises an alloy steel tooth body and a brazed hard alloy cutting pick head, wherein the cutting pick head is welded at one end of the tooth body. When cutting coal rocks and tunneling roadways, the cutting teeth are easy to have abrasion failure of the hard alloy cutting tooth head and the tooth body, falling off of the hard alloy cutting tooth head, tipping, tooth body fracture and the like under complicated working conditions, so that the number of the cutting teeth consumed by each ten thousand tons of coal is high, the production cost is increased, and the production efficiency of a coal mining machine and a tunneling machine is directly influenced. Wherein the pick body is not wear resistant and can also cause premature removal of a carbide pick head secured to the end of the pick shank. According to the statistical results of a plurality of coal mines, the abrasion failure is the most main failure mode of the cutting tooth and accounts for 75% -90% of the failure modes. At present, the wear resistance of a tooth body is mainly improved through a surfacing technology, a surfacing welding wire is generally a Cr-Mo-W-Ti alloy or a Cr-Mo-W-V alloy, a formed surfacing welding layer is generally martensite plus carbide, or a surfacing wear-resistant layer is prepared by cladding WC particles through a Ni60 alloy, but the hardness of the whole wear-resistant protective layer is still low and is basically between 52 and 64HRC, and the improvement on the wear resistance of a cutting tooth is not obvious. Therefore, the wear-resisting property of the cutting tooth is further improved by adopting a simple processing mode, and the cutting tooth cutting device has very important significance for saving cost, improving production efficiency (the cutting tooth replacement can cause the reduction of the production efficiency) and even improving economic benefit.
Disclosure of Invention
The utility model aims to solve the problems in the prior art and provides a high-wear-resistance cutting pick with superhard wear-resistant particles on the surface.
The utility model is realized by the following technical scheme:
a high-abrasion-resistance cutting pick with the surface containing superhard abrasion-resistant particles comprises a pick body and a hard alloy head; the tooth body comprises a tooth handle, a tooth root and a tooth head which are integrally formed from bottom to top, the hard alloy head is welded and fixed at the center of the top end of the tooth head, and the hard alloy head, the tooth root and the tooth handle are positioned on the same axis; the outer wall of the tooth head is provided with a hard metallurgical layer from top to bottom at the height of 1/3-2/3.
Furthermore, the tooth handle and the tooth root are cylindrical, the tooth head is in a circular truncated cone shape, the diameter of the tooth root is larger than that of the tooth handle and that of the big circular surface of the tooth head, and the tooth head and the tooth root are in arc transition.
The hard metallurgical layer on the cutting pick has two schemes:
the first scheme is as follows: the hard metallurgical layer is prepared by mixing diamond wear-resistant particles and metal alloy powder.
The second scheme is as follows: the hard metallurgical layer is prepared by mixing diamond wear-resistant particles, ceramic particles and metal alloy powder.
Further, for the hard metallurgical layers of the two schemes, the diamond wear-resistant particles and the ceramic particles are exposed out of the surface of the hard metallurgical layer, and the exposed height is 1/2-1/5 of the length of each hard metallurgical layer.
Furthermore, for the hard metallurgical layers of the two schemes, the granularity of the diamond wear-resistant particles and the ceramic particles is 30-120 meshes, and the ceramic particles are c-BN and Al2O3、SiC、SI3N4One or more than one of the metal alloy powder or the metal alloy powder in any proportion is NiCr alloy powder.
According to the cutting pick, the hard metallurgical layer which is formed by cladding the diamond wear-resistant particles or the mixed particles of the diamond wear-resistant particles and the ceramic particles and the metal alloy powder is partially arranged near the top 1/3-2/3 of the cutting pick, so that the wear resistance of the cutting pick is improved, the diamond, c-BN and other super-hard particles are discretely distributed in the Ni-Cr hard metallurgical layer after being melted at high temperature, the hard metallurgical layer can effectively resist the impact force in the coal mining or tunneling process, the effect better than that of polycrystalline diamond is achieved, the hard metallurgical layer can effectively provide effective protection for the tooth body of the cutting pick, and the phenomenon that the hard alloy head falls off due to insufficient wear resistance of the tooth body is improved; in addition, the diamond wear-resistant particles and the ceramic particles are exposed out of the surface layer of the hard metallurgical layer, so that the sharpness of the cutting pick can be increased, and the working efficiency of the cutting pick is improved.
The utility model has scientific design, reasonable structure, simple and easy technical scheme, less increase of the cutting pick cost and more than 3 times of service life.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate exemplary embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
Fig. 1 is a schematic three-dimensional structure of a cutting pick of embodiment 1 of the utility model.
Fig. 2 is a longitudinal cross-sectional view of a cutting pick of embodiment 1 of the utility model.
Fig. 3 is a schematic three-dimensional structure of cutting picks of embodiments 2 and 3 of the utility model.
Fig. 4 is a longitudinal cross-sectional view of a cutting pick of embodiments 2 and 3 of the present invention.
In the figure: 1-hard alloy head, 2-tooth handle, 3-tooth root, 4-tooth head, 5-hard metallurgical layer, 6-diamond wear-resistant particle and 7-ceramic particle.
Detailed Description
In order that those skilled in the art will better understand the present invention, a more complete and complete description of the present invention is provided below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
Example 1
A high wear resistance cutting pick with diamond wear resistant particles on the surface, as shown in figures 1 and 2, comprises a pick body and a hard alloy head 1; the tooth body includes from bottom to top integrated into one piece's tooth handle 2, tooth root 3 and tooth head 4, and tooth handle 2 and tooth root 3 are the cylinder type, and tooth head 4 is the round platform type, and the diameter of tooth root 3 is greater than the diameter of tooth handle 2 and the diameter of the big disc of tooth head 4, and the big disc end of tooth head 4 is connected with tooth root 3 and adopts the circular arc between the two excessive.
The outer wall of the tooth head 4 is partially coated with a hard metallurgical layer 5 from top to bottom at 1/3, the hard metallurgical layer 5 is formed by mixing and melting diamond wear-resistant particles 6 and metal alloy powder, the particle size of the diamond wear-resistant particles 6 is 80 meshes, the metal alloy powder is NiCr alloy powder, and the height of the diamond wear-resistant particles 6 exposed out of the hard metallurgical layer 5 is 1/5 of the height of the diamond wear-resistant particles 6.
The center department on 4 tops of tooth head has seted up the welding blind hole, and the welding of carbide head 1 is fixed in the welding blind hole, and carbide head 1 all is located the same axis with tooth head 4, tooth root 3 and tooth handle 1.
Example 2
A high wear resistance cutting pick with diamond and ceramic wear resistant particles on the surface, as shown in figures 3 and 4, comprises a pick body and a hard alloy head 1; the tooth body includes from bottom to top integrated into one piece's tooth handle 2, tooth root 3 and tooth head 4, and tooth handle 2 and tooth root 3 are the cylinder type, and tooth head 4 is the round platform type, and the diameter of tooth root 3 is greater than the diameter of tooth handle 2 and the diameter of the big disc of tooth head 4, and the big disc end of tooth head 4 is connected with tooth root 3 and adopts the circular arc between the two excessive.
The outer wall of the tooth head 4 is partially coated with a hard metallurgical layer 5 from top to bottom at 2/3 heights, the hard metallurgical layer 5 is formed by mixing and melting diamond wear-resistant particles 6, ceramic particles 7 and metal alloy powder, the particle sizes of the diamond wear-resistant particles 6 and the ceramic particles 7 are 30 meshes, the ceramic particles 7 are c-BN, the metal alloy powder is NiCr alloy powder, and the heights of the diamond wear-resistant particles 6 and the ceramic particles 7 exposed out of the hard metallurgical layer 5 are 1/2 of the respective heights.
The center department on 4 tops of tooth head has seted up the welding blind hole, and the first welded fastening of carbide is in the welding inslot, and carbide 1 all is located the same axis with tooth head 4, tooth root 3 and tooth handle 2.
Example 3
A high wear resistance cutting pick with diamond and ceramic wear resistant particles on the surface, as shown in figures 3 and 4, comprises a pick body and a hard alloy head 1; the tooth body includes from bottom to top integrated into one piece's tooth handle 2, tooth root 3 and tooth head 4, and tooth handle 2 and tooth root 3 are the cylinder type, and tooth head 4 is the round platform type, and the diameter of tooth root 3 is greater than the diameter of tooth handle 2 and the diameter of the big disc of tooth head 4, and the big disc end of tooth head 4 is connected with tooth root 3 and adopts the circular arc between the two excessive.
The outer wall of the tooth head 4 is clad with a hard metallurgical layer 5 from top to bottom at 1/2 heights, the hard metallurgical layer 5 is formed by mixing and fusing diamond wear-resistant particles 6, ceramic particles 7 and metal alloy powder, the particle size of the diamond wear-resistant particles 6 is 120 meshes, the ceramic particles 7 are SiC, the metal alloy powder is NiCr alloy powder, and the heights of the diamond wear-resistant particles 6 and the ceramic particles 7 exposed out of the hard metallurgical layer 5 are 2/5 of the heights of the diamond wear-resistant particles and the ceramic particles.
The center department on 4 tops of tooth head has seted up the welding blind hole, and the first welded fastening of carbide is in the welding inslot, and carbide 1 all is located the same axis with tooth head 4, tooth root 3 and tooth handle 2.
The preparation method of the cutting pick in each embodiment is the same, and specifically comprises the following steps:
a: primary processing: and (3) blanking and forging the tooth body, machining to obtain an outline, and carrying out oil removal and sand blasting treatment on the surface of the tooth body blank.
B: powder fixation: and (3) coating a machine binder on the surface of the tooth head 4, uniformly spraying diamond wear-resistant particles 6 or mixed particles of the diamond wear-resistant particles 6 and ceramic particles 7 and metal alloy powder on the surface in sequence, and standing for 5-30 min until the binder is cured.
C: high-temperature fusion: and (3) putting the tooth body fixed with the mixed powder into a vacuum heating device, heating to fuse the diamond wear-resistant particles 6 or the mixed particles of the diamond wear-resistant particles 6 and the ceramic particles 7 and the metal alloy powder with the tooth head 4, and cooling along with a furnace to form the tooth body containing the wear-resistant particle hard metallurgical layer 5 and the tooth head 4.
D: welding and post-processing the hard alloy head 1: and (3) forming a welding blind hole in the top of the pick head 4, sequentially filling a welding flux, placing the hard alloy head 1, brazing the hard alloy head 1 and the pick head 4 together by rapid heating, then placing the pick in quenching liquid, quenching by using welding waste heat, and finally tempering the pick to remove stress.
The technical solutions in the embodiments of the present invention are clearly and completely described above, and the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (5)
1. A high wear-resistant cutting pick with the surface containing superhard wear-resistant particles is characterized in that: comprises a tooth body and a hard alloy head; the tooth body comprises a tooth handle, a tooth root and a tooth head which are integrally formed from bottom to top, the hard alloy head is welded and fixed at the center of the top end of the tooth head, and the hard alloy head, the tooth root and the tooth handle are positioned on the same axis; the outer wall of the tooth head is provided with a hard metallurgical layer from top to bottom at the height of 1/3-2/3.
2. A high wear resistance cutting pick having a surface containing ultra-hard abrasive particles according to claim 1, wherein: the tooth handle and the tooth root are cylindrical, the tooth head is in a circular truncated cone shape, the diameter of the tooth root is larger than that of the tooth handle and that of the big circular surface of the tooth head, and the tooth head and the tooth root are in arc transition.
3. A high wear resistance cutting pick having a surface containing ultra-hard abrasive particles according to claim 2, wherein: the diamond abrasive particles are exposed to the surface of the hard metallurgical layer to a height 1/2-1/5 of the length.
4. A high wear resistance cutting pick having a surface containing ultra-hard abrasive particles according to claim 2, wherein: the diamond wear-resistant particles and the ceramic particles are exposed on the surface of the hard metallurgical layer, and the exposed height is 1/2-1/5 of the respective length.
5. A high wear resistance cutting pick having a surface containing ultra-hard abrasive particles according to claim 3, wherein: the granularity of the diamond wear-resistant particles is 30-120 meshes, and the metal alloy powder is NiCr alloy powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121525158.2U CN216477326U (en) | 2021-07-06 | 2021-07-06 | High-wear-resistance cutting pick with surface containing superhard wear-resistant particles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121525158.2U CN216477326U (en) | 2021-07-06 | 2021-07-06 | High-wear-resistance cutting pick with surface containing superhard wear-resistant particles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216477326U true CN216477326U (en) | 2022-05-10 |
Family
ID=81394729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121525158.2U Active CN216477326U (en) | 2021-07-06 | 2021-07-06 | High-wear-resistance cutting pick with surface containing superhard wear-resistant particles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216477326U (en) |
-
2021
- 2021-07-06 CN CN202121525158.2U patent/CN216477326U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4682987A (en) | Method and composition for producing hard surface carbide insert tools | |
| US9739097B2 (en) | Polycrystalline diamond compact cutters with conic shaped end | |
| CA2674505C (en) | Drill bits and other downhole tools with hardfacing having tungsten carbide pellets and other hard materials | |
| US6124564A (en) | Hardfacing compositions and hardfacing coatings formed by pulsed plasma-transferred arc | |
| CN101163849A (en) | Bit leg and cone hardfacing for earth-boring bit | |
| CN101380698B (en) | Novel tubular hard surfacing material | |
| CN104646849A (en) | Tungsten carbide tubular welding rod for hard-surface overlay welding | |
| CN113482613B (en) | Preparation method of high-wear-resistance cutting pick with super-hard wear-resistant particles on surface | |
| CN101737044A (en) | High-abrasion resistance cutting teeth of coal-winning machine and production process thereof | |
| CN114226899A (en) | Composite brazing method for cutting tooth | |
| CN216477326U (en) | High-wear-resistance cutting pick with surface containing superhard wear-resistant particles | |
| CA3075600A1 (en) | Wear resistant layer | |
| US20170218495A1 (en) | Wear resistant coating | |
| CN105089508A (en) | Rotational drilling well drill bit and manufacturing method for same | |
| CN106522940A (en) | Abrasion-resistant tool bit | |
| CN201521248U (en) | Impregnated diamond bit with protective steel body | |
| CN203821218U (en) | Milling machine tool bit and milling machine applying same | |
| US20160121429A1 (en) | Repairing substrates of polycrystalline diamond cutters | |
| CN214403573U (en) | High-impact-resistance high-wear-resistance polycrystalline diamond composite cutting pick | |
| CN214424502U (en) | Cutting pick for rock stratum | |
| US20170198577A1 (en) | Rotatable Cutting Tool | |
| CN111058774B (en) | Cutting pick for drilling sandstone soil layer and preparation method thereof | |
| CN113586050B (en) | High-wear-resistance cutting pick containing diamond and preparation method thereof | |
| WO2014205514A1 (en) | Wear resistant stud | |
| CN110560866A (en) | diamond cutting tooth and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230724 Address after: 030024 No. 1713, 1714, Block B, AD Times City, No. 119 Yingze West Street, Wanbailin District, Taiyuan, Shanxi Province -0036 Patentee after: Shanxi Bofagete Technology Co.,Ltd. Address before: 030024 No. 79 West Main Street, Taiyuan, Shanxi, Yingze Patentee before: Taiyuan University of Technology |