CN114294002A - Hob cutter ring with transition wear-resistant layer and production process thereof - Google Patents
Hob cutter ring with transition wear-resistant layer and production process thereof Download PDFInfo
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- CN114294002A CN114294002A CN202111626774.1A CN202111626774A CN114294002A CN 114294002 A CN114294002 A CN 114294002A CN 202111626774 A CN202111626774 A CN 202111626774A CN 114294002 A CN114294002 A CN 114294002A
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Abstract
The invention discloses a hobbing cutter ring with a transition wear-resistant layer and a production process thereof, and belongs to the technical field of hobbing cutter rings. Cobalt-based WC powder is cladded in the annular grooves on the two sides of the cutter ring body and the edge of the cutter ring body in the circumferential direction to form a transition layer, nickel-based WC powder is cladded on the outer surface of the transition layer to form a wear-resistant layer, and WC large-particle alloy and WC powder are sprayed on the two sides of the cutter ring body to form a net-shaped wear-resistant layer. According to the invention, cladding layers with different hardness are cladded on the cutting edge of the cutter ring, the transition layer has better toughness and wear resistance, the outer layer has better wear resistance, the toughness can be effectively improved while the wear resistance of the cutter ring of the hob is improved, the failure problems of eccentric wear, blade rolling, cutter breaking and the like of the cutter ring in the tunneling process of a TBM tunneling machine are prevented, and the service life of the hob is prolonged.
Description
Technical Field
The invention belongs to the technical field of hob cutter rings, and particularly relates to a hob cutter ring with a transition wear-resistant layer and a production process thereof.
Background
The conventional TBM hob ring has insufficient wear resistance, is very easy to generate eccentric wear, edge rolling and edge tipping under extreme geological conditions, has frequent tool changing, causes low tunneling efficiency, has poor economic benefit and affects the construction period.
In recent years, as laser melting and plasma melting technologies are developed and mature, the application of the technology to a hob ring is increased, but the effect is still not ideal, and stress concentration exists in a cladding layer, so that the cladding layer is easy to peel off from an alloy body in a situation with large impact, and the using effect is influenced.
Compared with other surface treatment technologies, the laser cladding technology has the advantages that: the energy density is high, the heat is concentrated, the heating area can be melted rapidly and accurately, the deformation is small, the casting area is small, and the single melting thickness is thin. The disadvantages are that: because the laser cladding layer is cooled at a high speed, stress concentration at the joint part is caused, and the influence of the material of the cladding material on the performance of the final cladding layer is large. Plasma cladding has the advantages that: the cladding layer with large area and large depth can be realized, compared with the input heat of laser cladding, the cladding is more sufficient, the hardness distribution is uniform, the exhaust scum is thorough, the materials are easy to select and use, and the cost is low. The disadvantages are as follows: the input heat is large, and annealing deformation is easily caused.
Disclosure of Invention
The invention aims to provide a hob ring with a transition wear-resistant layer and a production process thereof, which prolong the service life of the hob ring, shorten the construction period and create benefits so as to solve at least one aspect of the problems and the defects in the background technology.
According to one aspect of the invention, the hobbing cutter ring with the transition wear-resistant layer is provided, two sides of the cutter ring body are both provided with annular grooves, and the circumferential edge of the cutter ring body is in an annular convex shape; the cutter ring cutting edge comprises a transition layer, a wear-resistant layer and a netted wear-resistant layer which are sequentially arranged from inside to outside of the cutter ring body, the transition layer is arranged in the annular groove, the transition layer covers the edge of the cutter ring body in the circumferential direction, the wear-resistant layer covers the transition layer, and the netted wear-resistant layer is fixedly connected to the two sides of the cutter ring body.
Further, the outer side edge of the wear-resistant layer is in smooth transition with the surface of the cutter ring body.
Further, the cutter ring body is made of high-thermal-stability die steel, the transition layer is made of cobalt-based WC, and the wear-resistant layer and the reticular wear-resistant layer are both made of nickel-based WC.
Further, the hardness of the cutter ring body is 58-60HRC, the hardness of the transition layer is 60-62HRC, and the hardness of the wear-resistant layer and the hardness of the reticular wear-resistant layer are both 62-64 HRC.
Compared with the prior art, the invention has the advantages that the cladding layers with different hardness are cladded on the cutting edge of the cutter ring, the transition layer has better toughness and wear resistance, the outer layer has better wear resistance, the toughness can be improved while the wear resistance of the cutter ring of the hob is improved, the failure problems of eccentric wear, blade rolling, cutter breaking and the like of the cutter ring in the tunneling process of the TBM tunneling machine are prevented, and the service life of the hob is prolonged.
A production process of a hob ring with a transition wear-resistant layer comprises the following steps:
the method comprises the following steps: preparing the cutter ring body of claim 1, cladding cobalt-based WC powder in annular grooves on two sides of the cutter ring body and the edge of the cutter ring body in the circumferential direction by using a laser cladding process to form a transition layer;
step two: cladding nickel-based WC powder on the outer surface of the transition layer by using a plasma surfacing process to form a wear-resistant layer;
step three: and (3) spraying WC large-grain alloy and WC powder on the surfaces of the wear-resistant layers on the two sides of the cutter ring body by using a plasma surfacing machine to form a meshed wear-resistant layer, and finally obtaining the hobbing cutter ring with the transitional wear-resistant layer.
Further, the cobalt-based WC powder is prepared as follows:
the components by mass percent are as follows: 1.2 to 1.6 percent of C, 1.0 to 1.3 percent of Si, 0.4 to 0.6 percent of Mn2.3 to 2.7 percent of Mo2.3 to 3.8 percent of Ni3.3, 1.0 to 1.4 percent of Ti1, 0.4 to 0.6 percent of Fe0, 72 to 75 percent of Co, 13 to 18 percent of WC powder and 0.3 to 0.6 percent of Y2O3 rare earth element, wherein the grain size of the WC powder is 4 to 6 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours.
Further, the preparation method of the nickel-based WC powder is as follows:
the components by mass percent are as follows: 0.4 to 0.6 percent of C, 24 to 18 percent of Cr 86, 32 to 5 percent of Si3, 2.0 to 3.0 percent of W, 2.5 to 3.5 percent of Fe2, 4.5 percent of B3, 1.3 to 1.7 percent of V, 25.0 to 30.0 percent of Ni0, 30 to 38 percent of WC powder and 21.2 to 1.7 percent of CeO21, wherein the grain size of the WC powder is 2 to 4 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours.
Further, the cutter ring body is prepared by quenching at 1020 ℃ under the protection of inert gas, and tempering at 520 ℃, 550 ℃ and 580 ℃ for three times.
Further, the step one is formation of a transition layer: the high-power optical fiber laser is used, and the technological parameters are as follows: laser power 5500-6500W, the diameter of a light spot is 3-5mm, the scanning speed is 4.6-5.5mm/s, the relative powder feeding rate is 11-15g/min, 30% of lap joint rate is selected, and a plurality of cladding layers are prepared, wherein the thickness of the transition layer is 1.2-1.6 mm.
Further, the step two is the formation of the wear-resistant layer: using a plasma surfacing machine, the welding speed is 2.5-3.5mm/s, the welding current is 100-2H, using argon gas for protection, wherein the distance between a nozzle of the plasma surfacing machine and the workpiece is 6-10 mm, the spraying position is on the transition layer, and the thickness of the formed wear-resistant layer is 3-5 mm.
Further, forming a three-step reticular wear-resistant layer: spraying WC large-grain alloy with the grain size of 2-4 μm and the cladding thickness of 2-3mm on two side surfaces of the cutter ring body, uniformly mixing WC on the side surfaces of the cutting edges with nickel-based alloy powder after pounding and grinding, and spraying into a reticular wear-resistant layer with the interval of 4-5mm by using a plasma surfacing machine.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines the advantages of two cladding methods to clad three layers of alloys, namely a transition layer, a wear-resistant layer and a net wear-resistant layer at the side part of the cutting edge, wherein the alloys are cobalt-based WC and nickel-based WC, cobalt in the cobalt-based WC has better wettability than nickel, and Mo and V have the functions of refining structure grains, reducing residual stress and enabling the cladding layer and a substrate to be in closer metallurgical bonding.
Adding a proper amount of WC powder with the grain size of 4-6 microns, and adding the WC powder with the mass fraction of 15% and the grain size of 2-4 microns into the nickel-based WC, so that the hardness is gradually improved from the cutter ring body to the transition layer to the wear-resistant layer and the reticular wear-resistant layer on the side part of the cutting edge; in the direction from the cutting edge of the cutter ring to the axis, the cladding layer is designed discontinuously, and the purpose is to reduce the influence of cladding thermal stress on the structural performance of the cladding layer.
Drawings
FIG. 1 is a schematic axial partial cross-sectional view of a hob ring provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of the overall structure of the hob ring in the direction A in FIG. 1;
fig. 3 is a schematic cross-sectional view of a portion of a cutter ring body provided in an embodiment of the invention.
In the figure: 1. a cutter ring body; 101. an annular groove; 102. an annular bulge shape; 2. a transition layer; 3. a wear layer; 4. a reticular wear-resistant layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are further specifically described below by examples. A hob ring with a transition wear-resistant layer and a production process limitation thereof.
Furthermore, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details.
According to a general technical concept of the present invention, as shown in fig. 1-3, a hob ring with a transition wear-resistant layer is provided, which comprises a hob ring body 1 and a hob ring cutting edge, wherein two sides of the hob ring body 1 are both provided with annular grooves 101, and the circumferential edge of the hob ring body 1 is in an annular convex shape 102; the cutter ring cutting edge comprises a transition layer 2, a wear-resistant layer 3 and a netted wear-resistant layer 4 which are sequentially arranged from inside to outside of a cutter ring body 1, wherein the transition layer 2 is arranged in the annular groove 101, the transition layer 2 covers the edge of the cutter ring body 1 in the circumferential direction, the wear-resistant layer 3 covers the transition layer 2, and the netted wear-resistant layer 4 is fixedly connected to the two sides of the cutter ring body 1. Hobbing cutter sword circle presents the effect that hardness promoted step by step from sword circle body 1 to transition layer 2 to wearing layer 3, the netted wearing layer 4 of blade lateral part, has effectively solved the tipping phenomenon, and at sword circle blade to axle center direction, the cladding layer has discontinuous design, and aim at alleviates the influence of cladding thermal stress to cladding layer organizational performance.
Specifically, the cutter ring body 1 is machined by turning a 3-5mm deep sinking area on the cutting edge and the side edge of the cutter ring by a machine tool. The height of the main cladding area H is 21-30mm, the height from the bottom of the side cladding layer to the cutting edge H is 30mm along the radial direction from the cutting edge to the circle center of the cutter ring, the bad abrasion of the side of the cutter ring is protected, and the main cladding area H is used for cladding a transition layer, an abrasion-resistant layer and a net-shaped abrasion-resistant layer at the side part of the cutting edge.
The outer side edge of the wear-resistant layer 3 is smoothly transited to the surface of the cutter ring body 1 through grinding.
The cutter ring body 1 is made of high-thermal-stability die steel, the transition layer 2 is made of cobalt-based WC, and the wear-resistant layer 3 and the reticular wear-resistant layer 4 are both made of nickel-based WC.
The hardness of the cutter ring body 1 is 58-60HRC, the hardness of the transition layer 2 is 60-62HRC, and the hardness of the wear-resistant layer 3 and the hardness of the reticular wear-resistant layer 4 are both 62-64 HRC.
A production process of a hob ring with a transition wear-resistant layer 3 comprises the following steps:
the method comprises the following steps: preparing the cutter ring body 1, cladding cobalt-based WC powder in the annular grooves 101 on the two sides of the cutter ring body 1 and the circumferential edge of the cutter ring body 1 by using a laser cladding process to form a transition layer 2;
step two: cladding nickel-based WC powder on the outer surface of the transition layer 2 by using a plasma surfacing process to form a wear-resistant layer 3;
step three: and (3) spraying WC large-particle alloy and WC powder on the surfaces of the wear-resistant layers 3 on the two sides of the cutter ring body 1 by using a plasma surfacing machine to form a reticular wear-resistant layer 4, and finally obtaining the hob cutter ring with the transitional wear-resistant layer.
The wear-resistant layer and the net-shaped wear-resistant layer at the side part of the cutting edge are coated by using a plasma spraying process, and the plasma spraying process has the advantages of large-area and large-depth cladding and good cladding quality.
The preparation method of the cobalt-based WC powder comprises the following steps:
the components by mass percent are as follows: 1.2 to 1.6 percent of C, 1.0 to 1.3 percent of Si, 0.4 to 0.6 percent of Mn2.3 to 2.7 percent of Mo2.3 to 3.8 percent of Ni3.3, 1.0 to 1.4 percent of Ti1, 0.4 to 0.6 percent of Fe0, 72 to 75 percent of Co, 13 to 18 percent of WC powder and 0.3 to 0.6 percent of Y2O3 rare earth element, wherein the grain size of the WC powder is 4 to 6 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours.
The preparation method of the nickel-based WC powder comprises the following steps:
the components by mass percent are as follows: 0.4 to 0.6 percent of C, 24 to 18 percent of Cr 86, 32 to 5 percent of Si3, 2.0 to 3.0 percent of W, 2.5 to 3.5 percent of Fe2, 4.5 percent of B3, 1.3 to 1.7 percent of V, 25.0 to 30.0 percent of Ni0, 30 to 38 percent of WC powder and 21.2 to 1.7 percent of CeO21, wherein the grain size of the WC powder is 2 to 4 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours. CeO2 is added to improve the structure performance and reduce the structure stress of the joint, B can accelerate the fluidity of the molten pool, V can refine the structure grains, so that the structure is more compact and the wear resistance is enhanced.
The cutter ring body 1 is prepared by quenching at 1020 ℃ under the protection of inert gas, and tempering for three times at 520 ℃, 550 ℃ and 580 ℃.
Step one formation of the transition layer 2: the high-power optical fiber laser is used, and the technological parameters are as follows: laser power 5500-6500W, the diameter of a light spot is 3-5mm, the scanning speed is 4.6-5.5mm/s, the relative powder feeding rate is 11-15g/min, 30% of lap joint rate is selected, a plurality of cladding layers are prepared, the thickness of the transition layer 2 is 1.2-1.6mm, the hardness of the transition layer 2 is within the range of 60HRC-62HRC, and the wear-resistant layer has better toughness than the wear-resistant layer.
Step two formation of the wear-resistant layer 3: the welding speed is 2.5-3.5mm/s, the welding current is 100-150A, the ion gas amount is 10-16L/mm 2h, argon protection is used, the distance between a nozzle of the plasma surfacing machine and a workpiece is 6-10 mm, the spraying position is on the transition layer 2, and the thickness of the formed wear-resistant layer 3 is 3-5 mm.
Step three, forming a reticular wear-resistant layer 4: the two side surfaces of the cutter ring body 1 are sprayed with WC large-grain alloy, the grain size is 2-4 mu m, the cladding thickness is 2-3mm, WC on the side surfaces of the cutting edges is made of high-performance waste alloy, the waste alloy is smashed and ground and then is uniformly mixed with nickel-based alloy powder, and the mixture is sprayed into a reticular wear-resistant layer 4 by a plasma surfacing welding machine, wherein the interval between grids is 4-5 mm.
In this embodiment, a production process of a hob ring with a transition wear-resistant layer 3 includes the following steps:
the method comprises the following steps: preparing the cutter ring body 1 of claim 1, wherein high-power fiber lasers are used in the annular grooves 101 at two sides of the cutter ring body 1 and at the circumferential edge of the cutter ring body 1, and the technological parameters are as follows: the laser power is 6000W, the diameter of a light spot is 4mm, the scanning speed is 5.0mm/s, the relative powder feeding rate is 13g/min, a 30% lap joint rate is selected, a plurality of cladding layers are prepared, and the thickness of the transition layer 2 is 1.5 mm;
step two: on the outer surface of the transition layer 2, a plasma surfacing machine is used, the welding speed is 3mm/s, the welding current is 120A, the ion gas amount is 13L/mm2 & h, argon protection is used, the distance between a nozzle of the plasma surfacing machine and a workpiece is 8mm, the spraying position is on the transition layer 2, and the thickness of the formed wear-resistant layer 3 is 3 mm;
step three: spraying WC large-grain alloy with the grain size of 2-4 microns and the cladding thickness of 2-3mm on two side surfaces of the cutter ring body 1, uniformly mixing the WC on the side surfaces of the cutting edges with high-performance alloy after pounding and grinding, spraying the mixture into a net-shaped wear-resistant layer 4 by using a plasma surfacing machine, and finally obtaining the hobbing cutter ring with the transition wear-resistant layer, wherein the grid interval is 4-5 mm;
the cutter ring body 1 is prepared by quenching at 1020 ℃ under the protection of inert gas, and tempering for three times at 520 ℃, 550 ℃ and 580 ℃;
the transition layer 2 comprises the following components in percentage by mass: 1.5% of C, 1.2% of Si, 0.5% of Mn0.5%, 2.5% of Mo2, 3.5% of Ni3, 1.2% of Ti1.5%, 0.5% of Fe0.5%, 15% of WC powder, 0.5% of Y2O3 rare earth element and the balance of Co; stirring and grinding the alloy powder in a stirrer for 3-4 h, uniformly mixing, drying in a vacuum environment of 70 ℃ for 2h, preheating the cutter ring body to 120 ℃, uniformly placing the uniformly mixed alloy powder in a synchronous powder feeder of a laser, and setting various parameters.
The wear-resistant layer 3 and the reticular wear-resistant layer 4 both comprise the following components in percentage by mass: 0.5% of C, 16% of Cr, 4% of Si, 2.5% of W, 3% of Fe, 4% of B, 1.5% of V, 35% of WC powder and CeO21.5% and the balance of Ni.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The hob ring with the transition wear-resistant layer is characterized by comprising a hob ring body (1) and a hob ring cutting edge, wherein two sides of the hob ring body (1) are provided with annular grooves (101), and the circumferential edge of the hob ring body (1) is in an annular convex shape (102); the cutter ring cutting edge comprises a transition layer (2), a wear-resistant layer (3) and a netted wear-resistant layer (4) which are sequentially arranged from inside to outside from the cutter ring body (1), the transition layer (2) is arranged in the annular groove (101), the transition layer (2) covers the edge of the cutter ring body (1) in the circumferential direction, the wear-resistant layer (3) covers the transition layer (2), and the netted wear-resistant layer (4) is fixedly connected to the two sides of the cutter ring body (1).
2. The hob ring with a transitional wear layer according to claim 1, characterized in, that the outer side edge of the wear layer (3) is smoothly transited to the surface of the ring body (1).
3. The hob ring with the transition wear-resistant layer according to claim 1, characterized in that the hob ring body (1) is made of die steel, the material of the transition layer (2) is cobalt-based WC, and the materials of the wear-resistant layer (3) and the net-shaped wear-resistant layer (4) are nickel-based WC.
4. The hob ring with a transition wear layer according to any one of claims 1 to 3, characterized in, that the hardness of the ring body (1) is 58-60HRC, the hardness of the transition layer (2) is 60-62HRC, and the hardness of the wear layer (3) and the net wear layer (4) are both 62-64 HRC.
5. A production process of a hob ring with a transition wear-resistant layer is characterized by comprising the following steps:
the method comprises the following steps: preparing the cutter ring body (1), cladding cobalt-based WC powder in annular grooves (101) on two sides of the cutter ring body (1) and the edge of the cutter ring body (1) in the circumferential direction by using a laser cladding process to form a transition layer (2);
step two: cladding nickel-based WC powder on the outer surface of the transition layer (2) by using a plasma surfacing process to form a wear-resistant layer (3);
step three: and (3) spraying high-purity WC alloy powder and nickel-based WC powder on the surfaces of the wear-resistant layers (3) on the two sides of the cutter ring body (1) by using a plasma surfacing welding machine to form a net-shaped wear-resistant layer (4), and finally obtaining the hob cutter ring with the transition wear-resistant layer.
6. The production process of the hob ring with the transition wear-resistant layer according to claim 5, wherein the cobalt-based WC powder is prepared by the following steps:
the components by mass percent are as follows: 1.2 to 1.6 percent of C, 1.0 to 1.3 percent of Si, 0.4 to 0.6 percent of Mn2.3 to 2.7 percent of Mo2.3 to 3.8 percent of Ni3.3, 1.0 to 1.4 percent of Ti1, 0.4 to 0.6 percent of Fe0, 72 to 75 percent of Co, 13 to 18 percent of WC powder and 0.3 to 0.6 percent of Y2O3 rare earth element, wherein the grain size of the WC powder is 4 to 6 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours.
7. The production process of the hob ring with the transition wear-resistant layer according to claim 5, wherein the nickel-based WC powder is prepared by the following steps:
the components by mass percent are as follows: 0.4 to 0.6 percent of C, 24 to 18 percent of Cr 86, 32 to 5 percent of Si3, 2.0 to 3.0 percent of W, 2.5 to 3.5 percent of Fe2, 4.5 percent of B3, 1.3 to 1.7 percent of V, 25.0 to 30.0 percent of Ni0, 30 to 38 percent of WC powder and 21.2 to 1.7 percent of CeO21, wherein the grain size of the WC powder is 2 to 4 mu m, the mixture is stirred and ground in a stirrer for 3 to 4 hours, the mixture is uniformly mixed, and then the mixture is dried in a vacuum environment with the temperature of 68 to 80 ℃ for 2 to 3 hours.
8. The production process of the hob ring with the transition wear-resistant layer according to the claim 5, characterized in that the hob ring body (1) is made by quenching at 1020 ℃ under the protection of inert gas, and tempering at 520 ℃, 550 ℃ and 580 ℃ for three times.
9. A production process of a hob ring with a transition wear-resistant layer according to claim 5, characterized in, that step one the formation of the transition layer (2): the high-power optical fiber laser is used, and the technological parameters are as follows: laser power 5500-6500W, the diameter of a light spot is 3-5mm, the scanning speed is 4.6-5.5mm/s, the relative powder feeding rate is 11-15g/min, 30% of lap joint rate is selected, a plurality of cladding layers are prepared, and the thickness of the transition layer (2) is 1.2-1.6 mm.
10. The production process of the hob ring with the transition wear layer according to claim 5, characterized in that, in step two, the formation of the wear layer (3): a plasma surfacing machine is used, the welding speed is 2.5-3.5mm/s, the welding current is 100-150A, the ion gas amount is 10-16L/mm 2h, argon protection is used, the distance between a nozzle of the plasma surfacing machine and a workpiece is 6-10 mm, the spraying position is on the transition layer (2), and the thickness of the formed wear-resistant layer (3) is 3-5 mm;
step three, forming the reticular wear-resistant layer (4): the two side surfaces of the cutter ring body (1) are sprayed with WC large-grain alloy, the grain size is 2-4 mu m, the cladding thickness is 2-3mm, WC on the side surfaces of the cutting edges is made of high-performance alloy, the WC is smashed and ground and then is uniformly mixed with nickel-based alloy powder, and the mixture is sprayed into a reticular wear-resistant layer (4) by a plasma surfacing welding machine, wherein the interval between grids is 4-5 mm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116944682A (en) * | 2023-09-20 | 2023-10-27 | 中铁工程服务有限公司 | Laser surfacing process of wear-resistant cutter ring of shield machine and wear-resistant cutter ring |
| CN117066501A (en) * | 2023-08-14 | 2023-11-17 | 中铁工程服务有限公司 | Wear-resistant alloy material, shield wear-resistant ring and shield machine |
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| CN210422625U (en) * | 2019-09-23 | 2020-04-28 | 中德云岭(成都)科技有限公司 | Wear-resistant cutter ring of shield machine |
| CN110529133A (en) * | 2019-10-08 | 2019-12-03 | 西南交通大学 | A kind of TBM disk cutter of cutter ring excircle fluting |
| CN214303841U (en) * | 2021-01-13 | 2021-09-28 | 东莞市惠峰隧道机械设备有限公司 | Shield constructs quick-witted arbor end cover formula hobbing cutter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117066501A (en) * | 2023-08-14 | 2023-11-17 | 中铁工程服务有限公司 | Wear-resistant alloy material, shield wear-resistant ring and shield machine |
| CN117066501B (en) * | 2023-08-14 | 2024-03-12 | 中铁工程服务有限公司 | Wear-resistant alloy material, shield wear-resistant ring and shield machine |
| CN116944682A (en) * | 2023-09-20 | 2023-10-27 | 中铁工程服务有限公司 | Laser surfacing process of wear-resistant cutter ring of shield machine and wear-resistant cutter ring |
| CN116944682B (en) * | 2023-09-20 | 2024-01-09 | 中铁工程服务有限公司 | Laser surfacing process of wear-resistant cutter ring of shield machine and wear-resistant cutter ring |
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