CN111922638A - Cutter ring embedded with wedge-shaped alloy teeth and production process thereof - Google Patents
Cutter ring embedded with wedge-shaped alloy teeth and production process thereof Download PDFInfo
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- CN111922638A CN111922638A CN202010717474.3A CN202010717474A CN111922638A CN 111922638 A CN111922638 A CN 111922638A CN 202010717474 A CN202010717474 A CN 202010717474A CN 111922638 A CN111922638 A CN 111922638A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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Abstract
The invention discloses a cutter ring embedded with wedge-shaped alloy teeth, which comprises a cutter ring main body, wherein a connecting shaft is arranged on the cutter ring main body, an inner hole is formed in the connecting shaft, the cutter ring main body is provided with alloy teeth distributed in an array manner, and two sides of the cutter ring main body are provided with wear-resistant layers. A production process of a cutter ring embedded with wedge-shaped alloy teeth comprises the following steps: s1: molding, S2: heat treatment, S3: primary processing, S4: alloy tooth 3 processing, S5: silver brazing process, S6: welding the wear-resistant layer, S7: and (5) secondary processing. According to the alloy tooth cutter ring, the alloy teeth are welded on the cutter ring through the silver brazing process, so that the connection strength of the alloy teeth and the cutter ring is increased; wear-resistant welding is applied to the two sides and the top of the cutter ring to form a wear-resistant layer, so that the wear resistance of the cutter ring in the feeding process is increased, the hardness, toughness and wear resistance of the cutter are improved, the cutter is suitable for various rock strata, is not easy to damage in the complex low environment during working, and is favorable for reducing the construction cost and the construction difficulty.
Description
Technical Field
The invention relates to an alloy tooth cutter ring and a production process thereof, in particular to a wedge-shaped alloy tooth inlaid cutter ring and a production process thereof.
Background
At present, with the high-speed development of modern economic construction in our country, the tunnel engineering construction industry is briskly developing the application of the shield tunneling construction method, while the disc cutter ring is a special tool for the shield tunneling machine, and the service life and the adaptability to geological conditions of the cutter ring become one of the important factors influencing the construction efficiency of the shield tunneling machine. The disc-shaped hobbing cutter ring of the shield tunneling machine in China is mostly made of alloy steel, the hobbing cutter rings have the defects of narrow application range, poor strength and wear resistance, easy fracture and poor wear resistance when meeting a complex stratum, the alloy gear cutter ring is extremely easy to damage, and the construction cost and the construction difficulty are increased.
Disclosure of Invention
The invention aims to provide a wedge-shaped alloy tooth inlaid cutter ring and a production process thereof, wherein alloy teeth are welded on the cutter ring through a silver brazing process, so that the connection strength of the alloy teeth and the cutter ring is increased; wear-resistant welding is applied to the two sides and the top of the cutter ring to form a wear-resistant layer, so that the wear resistance of the cutter ring in the feeding process is increased, the hardness, toughness and wear resistance of the cutter are improved, the cutter is suitable for various rock strata, is not easy to damage in the complex low environment during working, and is favorable for reducing the construction cost and the construction difficulty.
The two sides and the top of the cutter ring body 2 are welded by adopting the coating and wear-resistant welding to form a wear-resistant layer 4, so that the wear resistance of the cutter ring is improved
The purpose of the invention can be realized by the following technical scheme:
the utility model provides an inlay wedge alloy tooth cutter ring, cutter ring includes the cutter ring main part, be equipped with the connecting axle in the cutter ring main part, be equipped with the hole on the connecting axle, be equipped with the alloy tooth that the array distributes in the cutter ring main part, the both sides of cutter ring main part all are equipped with the wearing layer.
A production process of a cutter ring embedded with wedge-shaped alloy teeth comprises the following steps:
s1: shaping of
And forging and forming 42CrMo steel to form a cutter ring blank.
S2: thermal treatment
Placing the cutter ring blank in a heat treatment furnace, heating to 1030-1240 ℃, preserving heat in the furnace for 2-3 hours, adopting natural intermittent cooling to reduce the temperature to 50-80 ℃, keeping the constant temperature for 20-30 minutes until the temperature is reduced to 505-1240 ℃, placing the cutter ring blank in a natural condition, and cooling and annealing, wherein the hardness of the cutter ring blank is HRC 38-42.
S3: one-time processing
And machining the blank by adopting a machining reference of rough turning machining to machine the blank, and adopting a machining center to perform hole opening operation on the circumference of the machined cutter ring main body to form an assembly hole embedded with the hard alloy teeth.
S4: alloy tooth treatment
And (4) processing the alloy teeth according to the size of the assembly hole, performing heat treatment after processing, and performing rust and oil removal treatment on the alloy teeth and the assembly hole.
S5: silver brazing process
And welding the alloy teeth on the cutter ring main body by a silver brazing process.
S6: wear-resistant layer for coating and welding
And (3) adopting welding and wear-resistant welding on the two sides and the top of the cutter ring main body to form a wear-resistant layer.
S7: secondary working
And carrying out secondary processing on the welded cutter ring, and collecting a finish machining mode to the end face and the inner hole of the cutter ring to eliminate thermal deformation caused by heating welding.
Further, in the step S3, in the primary processing, rough turning is performed at a rotation speed of 600-.
Further, the diameter of the assembly hole in the one-time processing of S3 is 60-80 mm.
Further, in the processing of the alloy teeth in S4, the alloy teeth are heated to 600-700 ℃, heat preserved for 40-60 minutes, then heated to 1000-1100 ℃, cooled to room temperature at a cooling speed of 50-70 ℃, tempered at 500-600 ℃, kept for 60-80 minutes, and then cooled to room temperature.
Further, in the S5 silver brazing process, the silver soldering piece adopts 40-45% of silver content, a silver soldering piece is placed in the assembling hole, the thickness of the silver soldering piece is 1-1.2mm, the diameter of the silver soldering piece is 0.4-0.6mm smaller than that of the assembling hole, the surface of the alloy tooth is uniformly coated with the soldering flux, the alloy tooth is placed in the assembling hole and is welded in a uniform heating mode, the welding temperature is 720-760 ℃, the heat preservation is carried out for 200-280 minutes after the welding, and the welding strength is more than 250 MPa.
The invention has the beneficial effects that:
1. according to the alloy tooth cutter ring, the alloy teeth are welded on the cutter ring through the silver brazing process, so that the connection strength of the alloy teeth and the cutter ring is increased;
2. according to the alloy tooth cutter ring, the wear-resistant layers are formed by welding the wear-resistant welds on the two sides and the top of the cutter ring, so that the wear resistance of the cutter ring in the feeding process is increased, the hardness, the toughness and the wear resistance of a cutter are improved, the alloy tooth cutter ring is suitable for various rock strata, is not easy to damage when working in a complex low environment, and is beneficial to reducing the construction cost and the construction difficulty.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of an alloy tooth cutter ring according to the present invention;
FIG. 2 is a schematic view of the structure of the alloy toothed cutter ring of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.
The utility model provides an inlay wedge alloy tooth cutter ring, cutter ring includes cutter ring main part 2, is equipped with connecting axle 1 on the cutter ring main part 2, is equipped with hole 5 on the connecting axle 1, is equipped with the alloy tooth 3 of array distribution on the cutter ring main part 2, and the both sides of cutter ring main part 2 all are equipped with wearing layer 4.
A production process of a cutter ring embedded with wedge-shaped alloy teeth comprises the following steps:
s1: shaping of
And forging and forming 42CrMo steel to form a cutter ring blank.
S2: thermal treatment
Placing the cutter ring blank in a heat treatment furnace, heating to 1030-1240 ℃, preserving heat in the furnace for 2-3 hours, adopting natural intermittent cooling to reduce the temperature to 50-80 ℃, keeping the constant temperature for 20-30 minutes until the temperature is reduced to 505-1240 ℃, placing the cutter ring blank in a natural condition, cooling and annealing, wherein the hardness of the cutter ring blank is HRC38-42 at the moment, and ensuring that the cutter body has enough wear resistance and hardness, and has enough strength and toughness.
S3: one-time processing
The rough turning is firstly carried out at the rotating speed of 600-800r/min, the feeding speed of 30-40mm/s and the cutting amount of 10-20mm, then the finish turning is carried out at the rotating speed of 300-400r/min, the feeding speed of 15-25mm/s and the cutting amount of 5-10mm, cooling liquid is sprayed to the processing position in the processing process, the temperature of the cooling liquid is 20-23 ℃, a processing center is adopted to carry out hole opening operation on the circumference of the processed cutter ring main body 2 to form an assembly hole embedded with the hard alloy teeth, and the diameter of the assembly hole is 60-80 mm.
S4: alloy tooth 3 processing
Processing the alloy teeth 3 according to the size of the assembly holes, performing heat treatment after processing, heating to 600-.
S5: silver brazing process
The alloy tooth (3) is welded on the cutter ring main body 2 through a silver brazing process, the silver content of a silver soldering piece is 40-45%, a silver soldering piece is placed in an assembly hole, the thickness of the silver soldering piece is 1-1.2mm, the diameter of the silver soldering piece is 0.4-0.6mm smaller than that of the assembly hole, soldering flux is uniformly coated on the surface of the alloy tooth 3, the alloy tooth 3 is placed in the assembly hole, the alloy tooth 3 is welded in a uniform heating mode, the welding temperature is 720-760 ℃, the heat preservation is carried out for 200-280 minutes after welding, and the welding strength is more than 250 MPa.
S6: wear-resistant layer for coating and welding
And the two sides and the top of the cutter ring main body 2 are welded by adopting welding and wear-resistant welding to form a wear-resistant layer 4, so that the wear resistance of the cutter ring is improved.
S7: secondary working
And carrying out secondary processing on the welded cutter ring, and collecting a finish machining mode to the end face and the inner hole of the cutter ring to eliminate thermal deformation caused by heating welding.
The alloy toothed cutter ring is adopted to respectively operate on weathered slate, sandstone, limestone, dolomite and calcareous sandstone, and the following experimental data are obtained:
| work object | Compressive strength (MPa) | Wear resistance of cutter ring | Breaking performance of cutter |
| Slate | 53-58 | Good effect | Good effect |
| Sandstone | 33-42 | Good effect | Good effect |
| Limestone | 39-48 | Good effect | Good effect |
| Dolomitic rock | 52-59 | Good effect | Good effect |
| Calcareous sandstone | 32-35 | Good effect | Good effect |
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (6)
1. The utility model provides an inlay wedge alloy tooth cutter ring, cutter ring include cutter ring main part (2), its characterized in that, be equipped with connecting axle (1) on cutter ring main part (2), be equipped with hole (5) on connecting axle (1), be equipped with alloy tooth (3) that the array distributes on cutter ring main part (2), the both sides of cutter ring main part (2) all are equipped with wearing layer (4).
2. A process for producing an alloy-toothed cutter ring according to claim 1, characterized in that it comprises the following steps:
s1: shaping of
Selecting 42CrMo steel to forge and form to form a cutter ring blank;
s2: thermal treatment
Placing the cutter ring blank in a heat treatment furnace, heating to 1030-1240 ℃, preserving heat in the furnace for 2-3 hours, adopting natural intermittent cooling to reduce the temperature to 50-80 ℃, keeping the constant temperature for 20-30 minutes until the temperature is reduced to 505-1240 ℃, placing the cutter ring blank in a natural condition, and cooling and annealing, wherein the hardness of the cutter ring blank is HRC 38-42;
s3: one-time processing
Machining a blank by adopting a machining reference of rough turning machining of the blank, and performing hole opening operation on the circumference of the machined cutter ring main body (2) by adopting a machining center to form an assembly hole embedded with hard alloy teeth;
s4: alloy tooth (3) processing
Machining the alloy teeth (3) according to the size of the assembly holes, performing heat treatment after machining, and performing rust and oil removal treatment on the alloy teeth (3) and the assembly holes;
s5: silver brazing process
Welding the alloy teeth (3) on the cutter ring main body (2) by a silver brazing process;
s6: wear-resistant layer for coating and welding
Welding and wear-resistant welding are adopted on the two sides and the top of the cutter ring main body (2) to form a wear-resistant layer (4);
s7: secondary working
And carrying out secondary processing on the welded cutter ring, and collecting a finish machining mode to the end face and the inner hole of the cutter ring to eliminate thermal deformation caused by heating welding.
3. The production process as claimed in claim 2, wherein the step S3 comprises rough turning at a speed of 600-800r/min, feeding at a speed of 30-40mm/S, and cutting at a rate of 10-20mm, and finish turning at a speed of 300-400r/min, feeding at a speed of 15-25mm/S, and cutting at a rate of 5-10mm, wherein the cooling liquid is sprayed to the machining position during machining, and the temperature of the cooling liquid is 20-23 ℃.
4. The production process according to claim 2, wherein the diameter of the assembly hole in one processing of S3 is 60-80 mm.
5. The production process as claimed in claim 2, wherein the step of S4, during the step of processing the tooth (3), comprises heating to 600-700 ℃, maintaining the temperature for 40-60 minutes, heating to 1000-1100 ℃, cooling to room temperature at a cooling rate of 50-70 ℃, tempering at 500-600 ℃ for 60-80 minutes, and cooling to room temperature.
6. The production process as claimed in claim 2, wherein in the S5 silver brazing process, the silver soldering sheet has a silver content of 40-45%, a silver soldering sheet is placed in the assembly hole, the thickness of the silver soldering sheet is 1-1.2mm, the diameter of the silver soldering sheet is 0.4-0.6mm smaller than that of the assembly hole, the surface of the alloy tooth (3) is uniformly coated with the soldering flux, the alloy tooth (3) is placed in the assembly hole, the alloy tooth (3) is welded in a uniform heating mode, the welding temperature is 720-760 ℃, the heat preservation is 200-280 minutes after welding, and the welding strength is more than 250 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717474.3A CN111922638A (en) | 2020-07-23 | 2020-07-23 | Cutter ring embedded with wedge-shaped alloy teeth and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717474.3A CN111922638A (en) | 2020-07-23 | 2020-07-23 | Cutter ring embedded with wedge-shaped alloy teeth and production process thereof |
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| CN111922638A true CN111922638A (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010717474.3A Pending CN111922638A (en) | 2020-07-23 | 2020-07-23 | Cutter ring embedded with wedge-shaped alloy teeth and production process thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633110A (en) * | 2008-10-21 | 2010-01-27 | 洛阳九久技术开发有限公司 | Cutter ring manufacturing process |
| CN109576450A (en) * | 2019-01-15 | 2019-04-05 | 常德市中天精密工具有限公司 | A kind of hot melt of break bar cutter ring is inserted and processing method |
| CN109719465A (en) * | 2018-12-28 | 2019-05-07 | 洛阳金鹭硬质合金工具有限公司 | A method of wear-resisting inserted cutter ring is made using cold pressing |
| CN109759784A (en) * | 2018-12-28 | 2019-05-17 | 洛阳金鹭硬质合金工具有限公司 | A method of wear-resisting inserted cutter ring is made using soldering |
| CN209339949U (en) * | 2018-12-12 | 2019-09-03 | 成都探矿机械厂 | A kind of double chisel teeth cutter ring of shield single-blade intersecting cloth tooth |
| CN209761436U (en) * | 2019-03-27 | 2019-12-10 | 安徽顺弘通机械设备科技有限公司 | heavy-duty inserted cutter ring |
| CN209838414U (en) * | 2019-03-13 | 2019-12-24 | 中铁十一局集团城市轨道工程有限公司 | Disc-shaped hobbing cutter ring for mudstone stratum |
-
2020
- 2020-07-23 CN CN202010717474.3A patent/CN111922638A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633110A (en) * | 2008-10-21 | 2010-01-27 | 洛阳九久技术开发有限公司 | Cutter ring manufacturing process |
| CN209339949U (en) * | 2018-12-12 | 2019-09-03 | 成都探矿机械厂 | A kind of double chisel teeth cutter ring of shield single-blade intersecting cloth tooth |
| CN109719465A (en) * | 2018-12-28 | 2019-05-07 | 洛阳金鹭硬质合金工具有限公司 | A method of wear-resisting inserted cutter ring is made using cold pressing |
| CN109759784A (en) * | 2018-12-28 | 2019-05-17 | 洛阳金鹭硬质合金工具有限公司 | A method of wear-resisting inserted cutter ring is made using soldering |
| CN109576450A (en) * | 2019-01-15 | 2019-04-05 | 常德市中天精密工具有限公司 | A kind of hot melt of break bar cutter ring is inserted and processing method |
| CN209838414U (en) * | 2019-03-13 | 2019-12-24 | 中铁十一局集团城市轨道工程有限公司 | Disc-shaped hobbing cutter ring for mudstone stratum |
| CN209761436U (en) * | 2019-03-27 | 2019-12-10 | 安徽顺弘通机械设备科技有限公司 | heavy-duty inserted cutter ring |
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Application publication date: 20201113 |
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