Plasma cladding planted diamond particle inserted shield cutter ring

Abstract

The utility model relates to the technical field of shield cutter production and processing, in particular to a plasma cladding diamond particle planting inserted shield cutter ring which comprises a cutter ring body, a plasma cladding wear-resistant layer, diamond particles planted in the wear-resistant layer and hard alloy ball nails. A ball nail inlaying groove is machined in the outer circle position of the cutter ring body, and the lower portion of the hard alloy ball nail is inlaid in the ball nail inlaying groove in the outer circle of the cutter ring body. Wear-resistant layer grooves are formed in the cutter ring body between the adjacent ball nail embedding grooves, and wear-resistant layers are cladded in the wear-resistant layer grooves; diamond particles are planted when the wear-resistant layer is subjected to plasma welding, so that the wear-resistant layer has certain toughness, the wear resistance of the diamond particles is utilized, and the service life of the wear-resistant layer is prolonged; meanwhile, the wear-resistant layer groove is additionally formed between the two hard alloy ball nails of the cutter ring body, so that the wear resistance of the cutter ring body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to shield cutter production and processing technical field, especially to a kind of plasma cladding planting diamond particle insert tooth shield cutter ring. BACKGROUND

[0002] Insert tooth cutter ring is used to insert tooth cutter body, and the existing, through the statistics of domestic subway tunnel construction, in recent years, insert tooth cutter ring is more and more and more widely used in tunnel construction. Insert tooth cutter ring has wear-resistant layer, the service life of wear-resistant layer is the short board of insert tooth cutter ring, which directly affects the service life of insert tooth cutter ring, leading to frequent tool change, increase construction cost and construction risk;

[0003] At present, the common wear-resistant layer form of insert tooth cutter ring on the market includes: electric welding FeCrBSi material wear-resistant layer, tungsten carbide particle planting welding wear-resistant layer, plasma surfacing tungsten carbide wear-resistant layer and laser surfacing tungsten carbide wear-resistant layer structure, but in specific construction use, insert tooth cutter ring exists wear-resistant layer early wear condition in strong abrasive stratum, causing cutter ring abnormal damage. Therefore, how to improve the service life of wear-resistant layer of insert tooth cutter ring is a difficult problem that needs to be solved in the application of insert tooth cutter ring. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of plasma cladding planting diamond particle insert tooth shield cutter ring, which plants diamond particle when plasma surfacing wear-resistant layer, can make wear-resistant layer have certain toughness, also utilize the wear resistance of diamond particle, improve the service life of wear-resistant layer;Meanwhile, wear-resistant layer groove is added between the two hard alloy ball pegs of cutter body, to improve the wear resistance of cutter body.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of plasma cladding planting diamond particle insert tooth shield cutter ring, including, cutter body, plasma cladding wear-resistant layer, wear-resistant layer planting diamond particle, hard alloy ball peg;The cutter body is overall circular structure, ball peg embedding groove is processed on the outer circle position of cutter body, and the ball peg embedding groove is uniformly distributed on the cutter body;The lower part of hard alloy ball peg is embedded in the ball peg embedding groove on the outer circle of cutter body;Wear-resistant layer groove is provided on the cutter body between adjacent ball peg embedding grooves, wear-resistant layer is cladded in wear-resistant layer groove to increase the wear resistance and impact resistance of interdental wear-resistant layer;Wear-resistant layer is laid on the outer side position of ball peg embedding groove on cutter body, and diamond particle is planted in wear-resistant layer.

[0007] The wear-resistant layer is cladded on the outside of the ball stud embedding groove of the cutter ring body in the wear-resistant layer groove by the plasma cladding method; and the 20-40 mesh diamond particles are planted in the wear-resistant layer by the external particle feeding device when the plasma cladding wear-resistant layer is applied.

[0008] Further, the wear-resistant layer base powder has the following mass percentages of elements: C is 0.15-0.24%, Ni is 2.2-3.0%, Cr is 16.8-17.8%, B is 0.7-0.92%, Si is 0.6-0.8%, and Fe is the balance; and the powder particle size is 100-270 mesh.

[0009] Further, the cutter ring body is made of 40CrNiMoA after forging and processing, and the heat treatment hardness of the cutter ring body is 40-45HRC.

[0010] Further, the hard alloy ball stud is composed of 15% Co and 85% WC, and the hardness of the hard alloy ball stud is 84-85HRA.

[0011] The plasma cladding diamond particle embedding tooth shield cutter ring has the following technical features and advantages compared with the existing tooth embedding shield cutter ring:

[0012] 1. Compared with the existing tooth embedding shield cutter ring, the plasma cladding diamond particle embedding tooth shield cutter ring plants diamond particles in the wear-resistant layer when the plasma cladding wear-resistant layer is applied, the wear-resistant layer containing the diamond particles can not only have a certain toughness, but also improve the service life of the wear-resistant layer by using the wear resistance of the diamond particles.

[0013] 2. The plasma cladding diamond particle embedding tooth shield cutter ring increases the wear-resistant layer groove between the two hard alloy ball studs (also between the adjacent ball stud embedding grooves) on the cutter ring body. Since the cutter ring body has good toughness but poor wear resistance, and the wear-resistant layer has good wear resistance but relatively poor toughness, this design can increase the wear-resistant layer wear resistance between the ball studs and protect the wear-resistant layer on both sides of the groove, so that the tooth embedding cutter ring has a very long service life and meets the construction and use requirements of users. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the plasma cladding diamond particle embedding tooth shield cutter ring.

[0015] Figure 2 It is a sectional view of the plasma cladding diamond particle embedding tooth shield cutter ring.

[0016] Figure 3The utility model discloses a kind of diamond particle embedding toothed shield cutter ring, including, cutter ring body 1, plasma cladding wear-resistant layer 2, diamond particle planting in wear-resistant layer 2, hard alloy ball stud 3;The cutter ring body 1 is overall circular structure, and is processed after being selected 40CrNiMoA forging, and heat treatment hardness is 40-45HRC;Hard alloy ball stud 3 is inlaid in the ball stud inlaid groove of the outer circle position of cutter ring body 1, as shown in the drawing of the specification, the ball stud inlaid groove is uniformly distributed and is processed on the outer circle of cutter ring body 1.

[0017] Figure 4 The utility model discloses a kind of diamond particle embedding toothed shield cutter ring, including, cutter ring body 1, plasma cladding wear-resistant layer 2, diamond particle planting in wear-resistant layer 2, hard alloy ball stud 3;The cutter ring body 1 is overall circular structure, and is processed after being selected 40CrNiMoA forging, and heat treatment hardness is 40-45HRC;Hard alloy ball stud 3 is inlaid in the ball stud inlaid groove of the outer circle position of cutter ring body 1, as shown in the drawing of the specification, the ball stud inlaid groove is uniformly distributed and is processed on the outer circle of cutter ring body 1.

[0018] Figure 5 The utility model discloses a kind of diamond particle embedding toothed shield cutter ring, including, cutter ring body 1, plasma cladding wear-resistant layer 2, diamond particle planting in wear-resistant layer 2, hard alloy ball stud 3;The cutter ring body 1 is overall circular structure, and is processed after being selected 40CrNiMoA forging, and heat treatment hardness is 40-45HRC;Hard alloy ball stud 3 is inlaid in the ball stud inlaid groove of the outer circle position of cutter ring body 1, as shown in the drawing of the specification, the ball stud inlaid groove is uniformly distributed and is processed on the outer circle of cutter ring body 1.

[0019] Figure mark is: 1, cutter ring body;2, wear-resistant layer;3, hard alloy ball stud;4, wear-resistant layer groove;5, plasma surfacing robot;6, additional particle feeding device;7, workbench. Specific implementation

[0020] To make the personnel in the technical field better understand the technical scheme of the utility model, the utility model is further explained in detail below in conjunction with the drawing of the specification and specific embodiment, it needs to be explained that when element is referred to as "fixed to" or "set to" another element, it can be directly or indirectly connected on another element.When an element is referred to as "connected to" another element, it can be directly or indirectly connected to another element.The terms "left" and "right" used in the present application file to indicate the position are all based on the specific structure shown in the drawing, and do not constitute the limitation to structure.

[0021] Specific embodiment 1: as shown in the drawing of the specification in the utility model, Figure 1 , the drawing of the specification in the utility model, Figure 2 , the drawing of the specification in the utility model, Figure 3 And the drawing of the specification in the utility model, Figure 4 A kind of diamond particle embedding toothed shield cutter ring provided by the utility model, including, cutter ring body 1, plasma cladding wear-resistant layer 2, diamond particle planting in wear-resistant layer 2, hard alloy ball stud 3;The cutter ring body 1 is overall circular structure, and is processed after being selected 40CrNiMoA forging, and heat treatment hardness is 40-45HRC;Hard alloy ball stud 3 is inlaid in the ball stud inlaid groove of the outer circle position of cutter ring body 1, as shown in the drawing of the specification, the ball stud inlaid groove is uniformly distributed and is processed on the outer circle of cutter ring body 1. Figure 3

[0022] As shown in the drawing of the specification in the utility model, Figure 2 ​As shown, the hard alloy ball spike 3 lower part is embedded in the ball spike embedding groove on the outer circle of the cutter ring body 1; the wear-resistant layer groove 4 is arranged on the cutter ring body 1 between adjacent ball spike embedding grooves, and the wear-resistant layer 2 is fused in the wear-resistant layer groove 4 to increase the wear-resistant capacity and impact resistance of the wear-resistant layer 2 between the teeth; the wear-resistant layer 2 is also arranged on the outer side of the ball spike embedding groove on the cutter ring body 1, and the mass percentage of each element in the base powder of the wear-resistant layer 2 is as follows: C is 0.15-0.24%, Ni is 2.2-3.0%, Cr is 16.8-17.8%, B is 0.7-0.92%, Si is 0.6-0.8%, and Fe is the balance; the powder particle size is 100-270 meshes; meanwhile, the 20-40 mesh diamond particles are added in the molten pool through the external particle feeding device 6 when the plasma fusion wear-resistant layer 2 is applied, so that the 20-40 mesh diamond particles are planted in the wear-resistant layer 2; the hard alloy ball spike 3 is mainly composed of 15% Co and 85% WC, and the hardness of the hard alloy ball spike 3 is 84-85HRA.

[0023] The plasma fusion planting diamond particle inserted tooth shield cutter ring is manufactured by the following manufacturing method during manufacturing.

[0024] Step 1, the cutter ring body 1 is forged by a forging equipment and then normalized by a heat treatment equipment, so that the grain of the cutter ring body is refined, the structure is uniform, and the work hardening is reduced;

[0025] Step 2, the cutter ring body 1 blank is roughly machined and semi-finished by a machining equipment, the outer contour of the cutter ring body 1 and the wear-resistant layer groove 4 between the hard alloy ball spikes 3 are machined, and then heat treatment is performed, so that the hardness is 40-45HRC;

[0026] Step 3, the cutter ring body 1 is preheated to 250-300 DEG C, and the wear-resistant layer 2 and the wear-resistant layer 2 between the ball spikes are welded by a plasma welding robot, the powder particle size of the wear-resistant layer 2 is 100-270 meshes, the 20-40 mesh diamond particles are planted in the wear-resistant layer 2 by the external particle feeding device 6 during welding, the thickness of the wear-resistant layer 2 is 2-4 mm, and the welding stress is removed after slow cooling;

[0027] Step 4, the hard alloy ball spike 3 hole is machined by using a numerical control milling machine;

[0028] Step 5, the hard alloy ball spike 3 is embedded by a cold embedding method, the hard alloy ball spike 3 is composed of 15% Co and 85% WC, and the hardness is 84-85HRA;

[0029] Step 6, the inner hole is finely ground.

[0030] In summary, the utility model discloses a kind of plasma cladding planting diamond particle insert shield cutter ring, when in specific production, diamond particle is planted in wear-resistant layer by additional particle feeding device 6 when plasma surfacing wear-resistant layer 2, and the wear-resistant layer made by this kind of operation production can make wear-resistant layer 2 have certain toughness, wear-resistant layer 2 is also used diamond particle's wear resistance, improve the service life of wear-resistant layer 2.Meanwhile, in order to solve the problem that cutter body 1 is good in toughness but poor in wear resistance, wear-resistant layer 2 is good in wear resistance but relatively poor in toughness, wear-resistant layer groove 4 is increased between two hard alloy ball pegs 3 of cutter body 1 (on cutter body 1 between adjacent ball peg inlay grooves), wear-resistant layer 2's wear resistance between hard alloy ball peg 3 is increased by this measure, wear-resistant layer 2 is also protected by the body of both sides of groove, the measures taken by the utility model make insert cutter ring have very high service life;Meet the construction use requirement of user.The basic principle, main features and advantages of the utility model are shown and described above.The technical personnel of the present industry should understand, the utility model is not limited by the above examples, the above examples and the description described in the specification are just to illustrate the principle of the utility model, under the premise of not departing from the spirit and scope of the utility model, the utility model will also have various changes and improvements, these changes and improvements all fall into the scope of the utility model to be protected.

Claims

1. A plasma cladding of a diamond particle-implanted insert shield TBM cutter ring, characterized in that, The application relates to a cutter ring body, a plasma cladded wear-resistant layer, planted diamond particles in the wear-resistant layer and a hard alloy ball spike, wherein the cutter ring body is a whole circular ring structure, ball spike embedding grooves are arranged on the outer circle of the cutter ring body, the ball spike embedding grooves are uniformly arranged on the cutter ring body, the lower part of the hard alloy ball spike is embedded in the ball spike embedding groove on the outer circle of the cutter ring body, wear-resistant layer grooves are arranged on the cutter ring body between adjacent ball spike embedding grooves, the wear-resistant layer grooves are cladded with wear-resistant layers to increase the wear-resistant capacity and impact resistance of the interdental wear-resistant layer, the outer side of the ball spike embedding groove on the cutter ring body is coated with the wear-resistant layer, and diamond particles are planted in the wear-resistant layer.

2. The method of claim 1, wherein the method further comprises: determining a plurality of candidate locations for the at least one additional device based on the at least one location of the at least one device and the at least one location of the at least one additional device. The wear-resistant layer is cladded in the wear-resistant layer grooves and on the outer side of the ball spike embedding groove on the cutter ring body by a plasma cladding method; 20-40 mesh diamond particles are planted in the wear-resistant layer by an external particle feeding device when the wear-resistant layer is plasma cladded.

3. The method of claim 2, wherein the method further comprises: determining a location of the at least one object in the image; and determining a location of the at least one object in the environment based on the location of the at least one object in the image and the location of the camera in the environment. The base powder of the wear-resistant layer contains the following elements: C is 0.15-0.24%, Ni is 2.2-3.0%, Cr is 16.8-17.8%, B is 0.7-0.92%, Si is 0.6-0.8%, and Fe is the rest, and the powder particle size is 100-270 mesh.

4. The method of claim 1, wherein the method further comprises: determining a location of the at least one object in the image; and determining a location of the at least one object in the environment based on the location of the at least one object in the image and the pose of the camera. The cutter ring body is made of 40CrNiMoA after forging and processing, and the heat treatment hardness is 40-45HRC.

5. The method of claim 1, wherein the method further comprises: determining a location of the at least one object in the image; and determining a location of the at least one object in the environment based on the location of the at least one object in the image and the location of the camera in the environment. The hard alloy ball spike is composed of 15% Co and 85% WC, and the hardness of the hard alloy ball spike is 84-85HRA.

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