CN207701137U - A kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy - Google Patents
A kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy Download PDFInfo
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- CN207701137U CN207701137U CN201721711147.7U CN201721711147U CN207701137U CN 207701137 U CN207701137 U CN 207701137U CN 201721711147 U CN201721711147 U CN 201721711147U CN 207701137 U CN207701137 U CN 207701137U
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- cutter ring
- alloy
- shield machine
- tungsten carbide
- diamondite
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Abstract
The utility model discloses a kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy, including cutter ring matrix (1) made of steel alloy, on the outer rim cutting edge of the cutter ring matrix (1), the perforative slot of multiple thickness directions circumferentially it has been uniformly distributed, built-up welding filling diamondite (2) in slot.The Hob cutter ring of shield machine can significantly improve service life, and simple in structure, batch production easy to implement.
Description
Technical field
The utility model is related to shield machine technical field more particularly to a kind of shield machine roller cutters with Tungsten Carbide Surfacing alloy
Cutter ring.
Background technology
Full face rock tunnel boring machine (Full Face Rock Tunnel Boring Machine, abbreviation TBM) is also known as shield
Structure machine integrates the functions such as driving, supporting, transport of slagging tap, the dust removal by ventilation of constructing tunnel, compared with traditional drilling and blasting method,
Have the characteristics that quick, high-quality, safe.Hobboing cutter cutter ring on cutter head of shield machine is the key that the portion that constructs in a whole set of heading equipment
Part and easily worn part.In the construction process, the operating condition of hobboing cutter is extremely severe, and consumption is very big, and frequent tool changing is seriously
Affect construction speed.Number of changing knife is shut down to reduce, reduces cutter ring loss, develops the hobboing cutter cutter ring of higher performance to closing weight
It wants.
Current hobboing cutter cutter ring generally uses Integral alloy steel making, and hobboing cutter cutter ring is mainly with U.S. Robbins in the world
It is representative with German Wirth.R-obbins uses AISl4340 steel, and ingredient is close with country's 40CrNiMo steel, has compared with high-ductility
Property.Wirth is the representative of high rigidity cutter ring using 1 grades of steel of X50CrVMo5-in German material DINl7350.Country's construction
The hobboing cutter cutter ring needed in the process largely meets by import.The country frequently with H13,4Cr5MoSiV1,40CrNiMo,
The alloys steel making hobboing cutter cutter ring such as 5Cr5MoSiV, 9Cr2Mo.In recent years, whole by optimizing components, heat treatment technology improvement
The wearability of hobboing cutter cutter ring has improvement, but it still wears comparatively fast in use, and wearability needs to be further increased.
The patent document of Chinese Patent Application No. 201620734964.3 discloses the cutter ring that hobboing cutter is used on a kind of shield machine,
The utility model includes cutter ring ontology, and several radial holes along cutter ring body diameter direction, institute are provided on the cutter ring ontology
The one end for stating radial hole is provided with adjusting block, and the other end of the radial hole is provided with fixed ring, is provided in the radial hole
One end of alloy block, the alloy block is slidably connected on adjusting block, and the other end of the alloy chopsticks is protruded from across fixed ring
Cutter ring outer body surface, can increase the service life of hobboing cutter.But cutter ring disclosed in the utility model need to beat radial hole, in order to ensure
Cutter ring intensity radial hole is unsuitable overstocked so that increased alloy block negligible amounts, the effect for improving wearability are also limited.Alloy block
With the non-metallurgical binding of radial hole, the risk for having fragmentation in use, falling, and disclosed cutter ring is complicated, manufacturing cost is high,
It is not suitable for mass production promotion.
The patent document of Chinese Patent Application No. 201620936968.X discloses a kind of shield machine hob ring, hobboing cutter circle body
Excircle on be provided with annular groove, be provided with through-hole on a side wall of the annular groove, be arranged on another side wall
There is corresponding blind hole；It is inlaid with hard alloy blocks in the annular groove, is provided on the hard alloy blocks and through-hole phase
Corresponding mounting hole；Connection bolt is provided in the through-hole, the connection bolt passes through through-hole and mounting hole to be inserted into blind hole；
The fast assembling-disassembling of hard alloy blocks can be realized using the utility model, can effectively improve the efficiency of shield machine cutter replacement.
This on new outer lane cutting edge using hard alloy blocks are continuously inlaid with, and hardness is higher, but shock resistance is poor, alloy block and inserting slot
Between non-metallurgical binding, the risk that alloy block also has fragmentation in use, falls, and disclosed cutter ring is complicated, is manufactured into
This height is also not suitable for mass production promotion.
If considering, whole circle pile-up welding hard alloy improves wearability on hobboing cutter cutter ring cutting edge, and it is solderable that there are hard alloy
Property poor, welding process in easy to produce crackle, be easy cracking, spallation problems during use.
Utility model content
In order to improve the service life of existing Integral alloy steel hobboing cutter cutter ring, existing band wear-resisting alloy block hobboing cutter cutter ring is overcome
Improve service life effect is limited, the risk that has fragmentation in use, fall, complicated, the high disadvantage of manufacturing cost.This
Utility model provides a kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy, can significantly improve the use of hobboing cutter cutter ring
Service life, Tungsten Carbide Surfacing alloy will not fall off in use, and simple in structure, batch production easy to implement.
In order to realize above-mentioned target, the utility model adopts the following technical scheme：
The utility model provides a kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy, including made of steel alloy
Cutter ring matrix has circumferentially been uniformly distributed the perforative slot of multiple thickness directions on the outer rim cutting edge of the cutter ring matrix, in slot
Diamondite is filled in built-up welding, and the ingredient (weight percent) of the diamondite is：40-80%W, 1.5-4.5%C ,≤
3.0%Mn ,≤4.0%Si ,≤5.0%Cr ,≤8.0%Mo ,≤5.0%V ,≤5.0%Nb ,≤5.0%Co, remaining for Fe and
Impurity element.
Preferably the ingredient (weight percent) of the built-up welding filling diamondite is：55-68%W, 2.5-4.0%C,
≤ 2.5%Mn ,≤3.5%Si ,≤4.0%Cr ,≤6.0%Mo ,≤3.0%V ,≤3.0%Nb ,≤2.5%Co, remaining is Fe
And impurity element.
Preferably the alloy composition (weight percent) of the cutter ring matrix is：0.30-0.50%C, 0.15-0.50%
Si, 0.50-1.0%Mn, 0.50-1.10%Cr, 1.0-2.0%Ni, 0.1-0.5%Mo, remaining is Fe and impurity element.
The alloy composition (weight percent) of the another a kind preferred cutter ring matrix is：0.32-0.45%C, 0.80-
1.25%Si, 0.20-0.60%Mn, 4.75-5.50%Cr, 0.80-1.20%V, 1.10-1.75%Mo ,≤0.030%P ,≤
0.030%S remaining be Fe and impurity element.
Diamondite has the characteristics that high rigidity, high-wearing feature, can increase the service life of hobboing cutter cutter ring.
Alloy steel matrix intensity itself is high and has certain wearability, is provided well for diamondite overlay cladding
Substrate support.Since diamondite is inlaid solid in by metallurgical binding on alloy steel matrix, so its cracking resistance in use,
Antistrip performance is fine.
, can be in above-mentioned slot when built-up welding filling diamondite in order to further increase the service life of cutter ring, overlay cladding
It is higher by outer circle basal plane, after being processed into finished product, the built-up welding filling diamondite protrusion outer rim basal plane 3-14mm.Protrusion is less than
3mm then increases the effect unobvious of wearability；Protrusion then protrudes part higher than 14mm and easily breaks, peels off when in use, and can increase
Valuable diamondite is added to consume.
For on the outer rim cutting edge of the cutter ring matrix, the circumferentially equally distributed perforative slot of multiple thickness directions,
Suitable groove depth is 5-25mm, suitable circumferential groove width is 5-50mm.
Further, it is the plasticity and toughness for preventing weld crack and increasing overlay cladding and matrix junction when built-up welding, can first exists
With carbon steel or the transition zone of Developing Tendency of Low-Alloy Steel Welding Material built-up welding 1-3mm thickness, then the built-up welding carbonization on transition zone on the groove face
Tungsten alloy.
The utility model provides a kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy.The Hob cutter ring of shield machine
With excellent wearability, impact resistance, antistrip performance, the service life of cutter ring can be significantly improved, to advantageously reduce
Construction cost improves construction efficiency.And simple in structure, batch production easy to implement.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings, wherein：
Fig. 1 is the utility model the 1st, 2,3, the schematic cross-section of the parallel disk of 4 kind of embodiment cutter ring；
Fig. 2 is A-A dissection surface schematic diagrames in Fig. 1；
Fig. 3 is the schematic cross-section of the parallel disk of the 5th embodiment cutter ring of the utility model；
Fig. 4 is the schematic cross-section of the local parallel disk of the 6th embodiment cutter ring groove location of the utility model.
Reference numeral：1, cutter ring matrix, 2, the diamondite of built-up welding, 3, built-up welding transition zone.
Specific implementation mode
Further illustrate the technical solution of the utility model with reference to embodiments.
The chemical composition of table 1 embodiment cutter ring matrix and comparative example cutter ring
The chemical composition of 2 embodiment diamondite overlay cladding of table
Embodiment 1
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.Slot
Position built-up welding filling diamondite (2), referring to Fig. 1, Fig. 2.The chemical composition of steel alloy cutter ring base material is shown in Table 1, and (remaining is Fe
And impurity element).The chemical composition of cutter ring diamondite overlay cladding is shown in Table 2 (remaining is Co and impurity element).
Embodiment 2
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.Slot
Position built-up welding filling diamondite (2), referring to Fig. 1, Fig. 2.The chemical composition of steel alloy cutter ring base material is shown in Table 1, and (remaining is Fe
And impurity element).The chemical composition of cutter ring diamondite overlay cladding is shown in Table 2 (remaining is Co and impurity element).
Embodiment 3
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.Slot
Position built-up welding filling diamondite (2), referring to Fig. 1, Fig. 2.The chemical composition of steel alloy cutter ring base material is shown in Table 1, and (remaining is Fe
And impurity element).The chemical composition of cutter ring diamondite overlay cladding is shown in Table 2 (remaining is Co and impurity element).
Embodiment 4
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.Slot
Position built-up welding filling diamondite (2), referring to Fig. 1, Fig. 2.The chemical composition of steel alloy cutter ring base material is shown in Table 1, and (remaining is Fe
And impurity element).The chemical composition of cutter ring diamondite overlay cladding is shown in Table 2 (remaining is Co and impurity element).
Embodiment 5
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.Slot
Position built-up welding filling diamondite (2), the built-up welding filling diamondite (2) protrude outer rim basal plane 10-12mm.Referring to figure
3.The chemical composition of steel alloy cutter ring base material is shown in Table 1 (remaining is Fe and impurity element).The change of cutter ring diamondite overlay cladding
It studies and point is shown in Table 2 (remaining is Co and impurity element).
Embodiment 6
The Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy of Φ 432mm specifications, including cutter ring base made of steel alloy
Body (1) is provided with the circumferentially perforative slot of equally distributed 32 thickness directions on the outer rim cutting edge of the cutter ring matrix.First
The transition zone (3) of 2mm or so thickness is covered with J507 welding rod built-up welding on groove face, then built-up welding filling tungsten carbide closes on transition zone
Golden (2), referring to Fig. 4.The chemical composition of steel alloy cutter ring base material is shown in Table 1 (remaining is Fe and impurity element).Cutter ring tungsten carbide closes
The chemical composition of golden overlay cladding is shown in Table 2 (remaining is Co and impurity element).
Comparative example 1, the chemical composition of 2 Integral alloy steel knife circle of comparative example are shown in Table 1 (remaining is Fe and impurity element).Specification
It is Φ 432mm, presses existing common process and manufacture.
Table 3 is listed in the case where the execution conditions such as geological conditions are essentially identical, certain construction section embodiment cutter ring with it is right
The service condition of ratio cutter ring.Ratio in table 3 is pressed with the data of comparative example 2 than calculating.
The service condition of table 3 embodiment cutter ring and comparative example cutter ring
Comparison is as it can be seen that the service life of embodiment 1-6 cutter rings significantly improves from table 3.
The above is the most preferred embodiment of the utility model, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy, including cutter ring matrix (1) made of steel alloy, feature
It is：On the outer rim cutting edge of the cutter ring matrix (1), it is circumferentially uniformly distributed the perforative slot of multiple thickness directions, in slot
Diamondite (2) is filled in built-up welding.
2. the Hob cutter ring of shield machine as described in claim 1 with Tungsten Carbide Surfacing alloy, it is characterised in that：The built-up welding is filled out
Fill diamondite (2) protrusion outer rim basal plane 3-14mm.
3. the Hob cutter ring of shield machine as described in claim 1 with Tungsten Carbide Surfacing alloy, it is characterised in that：It is described circumferentially
The depth of the equally distributed perforative slot of multiple thickness directions is 5-25mm, circumferential groove width is 5-50mm.
4. the Hob cutter ring of shield machine as described in claim 1 with Tungsten Carbide Surfacing alloy, it is characterised in that：In the slot table
The transition zone (3) of 1-3mm thickness is welded on face with carbon steel or Developing Tendency of Low-Alloy Steel Welding Material bottoming covering heap, on transition zone (3)
Built-up welding is filled with diamondite (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721711147.7U CN207701137U (en) | 2017-12-11 | 2017-12-11 | A kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721711147.7U CN207701137U (en) | 2017-12-11 | 2017-12-11 | A kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701137U true CN207701137U (en) | 2018-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721711147.7U Active CN207701137U (en) | 2017-12-11 | 2017-12-11 | A kind of Hob cutter ring of shield machine with Tungsten Carbide Surfacing alloy |
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| Country | Link |
|---|---|
| CN (1) | CN207701137U (en) |
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2017
- 2017-12-11 CN CN201721711147.7U patent/CN207701137U/en active Active
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