CN208513646U - A kind of cemented tungsten carbide carcass cutter ring - Google Patents
A kind of cemented tungsten carbide carcass cutter ring Download PDFInfo
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- CN208513646U CN208513646U CN201821279262.6U CN201821279262U CN208513646U CN 208513646 U CN208513646 U CN 208513646U CN 201821279262 U CN201821279262 U CN 201821279262U CN 208513646 U CN208513646 U CN 208513646U
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- cutter ring
- tungsten carbide
- carcass
- cutter
- matrix
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Abstract
The utility model provides a kind of cemented tungsten carbide carcass cutter ring, belongs to shield cutter technical field.A kind of cemented tungsten carbide carcass cutter ring, including cutter ring ontology and tungsten carbide matrix, cutter ring ontology outer circle radially open up several tooth sockets, and tooth socket is circumferentially uniformly distributed along outer circle, and each tooth socket, tooth top and cutter ring outer body wall are sintered filling tungsten carbide matrix.The utility model cemented tungsten carbide carcass on cutter ring ontology, pass through powder sintered mode, wear-resisting tungsten carbide metallurgical bonding in the outer circle of cutter ring matrix, two sides and is decided what is right and what is wrong on face, cutter ring matrix is effectively prevented to be exposed in wear medium, and any axial direction of cutter ring cutting edge is decided what is right and what is wrong on face, and sintered wear-resistant tungsten carbide, tungsten carbide are distributed in more evenly, and ratio is higher, with higher wear-resisting property, cutting-tool's used life is improved.
Description
Technical field
The utility model relates to shield cutter technical fields, and in particular to a kind of cemented tungsten carbide carcass cutter ring.
Background technique
With the progress of social development and science and technology, shield machine is widely applied and the operations such as underground engineering and tunnel piercing,
Not only work efficiency is high for it, has a safety feature, but also economic and environment-friendly.Cutter is provided on the cutterhead of shield machine, shield machine carries out
Mostly use disk cutter or serrated knife to carry out broken rock when excavation operation, and use auxiliary with scraper carry out scraping fragmented rock with
And it repairs and scrapes the tunnel borehole wall.In tunneling process, shield cutter will not only bear very big broken rock power, also suffer the long-term of rock
Abrasion.However, the abrasion of cutter can seriously affect the efficiency of breaking rock and digging diameter of development machine, shield just must be often replaced thus
Structure cutter, this adds increased the workloads of the consumption of vulnerable part and plant maintenance, and unit is caused to excavate increased costs.
Therefore, in view of the problems of the existing technology, it should increase the wearability of shield cutter.A kind of method is to improve knife
The hardness of ontology is enclosed, this will certainly reduce cutter ring toughness.In engineering practice, quartzite stronger for abrasiveness, sandstone, wind
Change red rock, fracture conglomerate etc. stratum and complexity stratum, the simple hardness by raising cutter ring ontology meets the need on stratum
It asks, and the toughness for sacrificing cutter is run counter to desire.Another method be inlayed on shield cutter ontology, welding or sintering it is resistance to
Mill material is enhanced.This method further increases while keeping or improving existing cutter attack toughness, to cutter material
By force.
Through retrieving, publication number CN107605501A, publication date 2018.1.19 disclose a kind of shield cutter plasma arc
The manufacture craft of Tungsten Carbide Surfacing cutter ring is deposited with one layer of hardfacing in the method for cutter ring outer rim two sides plasma arc surfacing
Layer, to improve the wearability and impact resistance of cutter ring, first, the no quantization ginseng of plasma surfacing technical process of the utility model
Number, and non-build-up wear-resistant layer at cutter ring outer circle, easily cause the matrix advanced wear of cutter ring outer circle and extend to cutter ring intrinsic silicon；
Second, the wearing layer of nano-stage tungsten carbide powder end built-up welding made from the special process of the utility model is thicker suitable for cutting
Pile foundation containing reinforcing bar, application range are relatively limited to.The utility model provides formula and the preparation of a kind of cemented tungsten carbide carcass cutter ring
In view of the problems of the existing technology technique is further improved.
Utility model content
The technical problems to be solved in the utility model: first, shield machine in underground engineering and tunnel piercing operation, due to
Shield cutter wear-resisting property is poor, leads to that the efficiency of breaking rock of development machine is low, digging diameter is small and service life is low, needs thus
Often replacement shield cutter, increases the consumption of vulnerable part and the workload of plant maintenance, and unit excavates increased costs；The
Two, publication number CN107605501A, publication date 2018.1.19 disclose a kind of shield cutter plasma arc surfacing tungsten-carbide knife
The manufacture craft of circle is deposited with one layer of wearable overlay in the method for cutter ring outer rim two sides plasma arc surfacing, but the hair
The bright no quantization parameter of plasma surfacing technical process, non-build-up wear-resistant layer at cutter ring outer circle, easily causes the matrix of cutter ring outer circle
Advanced wear simultaneously extends to cutter ring intrinsic silicon, and nano-stage tungsten carbide powder end built-up welding made from the special process of the invention is resistance to
Layer is ground, suitable for cutting the thicker pile foundation containing reinforcing bar, application range is relatively limited to.
The technical solution of the utility model is as follows:
A kind of cemented tungsten carbide carcass cutter ring, including circular cutter ring ontology and tungsten carbide matrix, the cutter ring ontology
Outer circle radially offers several tooth sockets, and tooth socket is uniformly distributed along cutter ring ontology excircle, each tooth socket and
Its tooth top and cutter ring outer body wall are sintered filling tungsten carbide matrix.
Cutter ring ontology decides what is right and what is wrong face as the flat-tope structure of variable cross-section, and cutter ring outer body wall is step design, the depth of step
It is identical as the tungsten carbide matrix thickness of cutter ring outer body wall, it is 5~6mm；
Tooth socket decides what is right and what is wrong face as inverted trapezoidal structure, and the inverted trapezoidal gradient is 70~80 °, and the bottom width of tooth socket is 25~30mm,
The root arc radius of tooth socket is 5~8mm, and the depth of tooth socket is 35~40mm；
The circumferential width of tooth top is 12~15mm, and radius of circle where tooth top is identical with tooth top tungsten carbide matrix thickness, for 5~
6mm；
Tooth socket, tooth top and cutter ring outer body wall fill tungsten carbide matrix, the tungsten carbide tire of tooth socket by way of sintering
Body thickness is 35~40mm, and tooth top tungsten carbide matrix is with a thickness of 5~6mm, and the tungsten carbide matrix of cutter ring outer body wall is with a thickness of 5
~6mm.
The beneficial effects of the utility model are: a kind of cemented tungsten carbide carcass cutter ring of the utility model, on cutter ring ontology
Cemented tungsten carbide carcass, is designed by packaging type, so that the tooth socket of cutter ring ontology and side all metallurgical bonding tungsten carbide matrixs, and
Bond strength is high, protects cutter ring ontology using carcass, further to cutter material while keeping existing cutter attack toughness
Enhancing makes cutter ring be difficult to abrasion and impact by abrasive layer, improves cutting-tool's used life.
In the matrix formula of design, the high-wearing feature of tungsten carbide is made full use of, the characteristics of chemical stability grinds to resist
The abrasion and impact of quartz, gravel and cobble in mill property stratum.Macrocrystalline tungsten carbide uniform texture, crystalline particle is big, and heat is steady
Qualitative good, shock resistance is high；Spherical cast tungsten carbide face shaping is spherical particle, and uniform texture is fine and close, and performance is steady
Fixed, hardness is high, wear-resisting property is good, and is used cooperatively by size particles, and bulky grain wear-resisting property is more excellent, and little particle is then filled
The gap of remaining tungsten carbide mixing, keeps its tissue more dense, toughness is stronger, to improve the wear-resisting property and impact resistance of cutter ring
Energy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the cemented tungsten carbide carcass cutter ring of the utility model.
Fig. 2 is the structural schematic diagram of the cemented tungsten carbide carcass cutter ring ontology of the utility model.
Fig. 3 is the profile pattern of the cemented tungsten carbide carcass cutter ring ontology of the utility model.
Description of symbols: 1, cutter ring ontology；2, tooth socket；3, tooth top；4, tungsten carbide matrix.
Specific embodiment
The utility model is carried out in more detail below by specific embodiment for the ease of understanding the utility model,
It is bright.
A kind of cemented tungsten carbide carcass cutter ring of the utility model, cutter ring ontology 1 and tungsten carbide matrix 4 including annular shape,
1 outer circle of cutter ring ontology radially opens up several tooth sockets 2, and tooth socket 2 is circumferentially uniformly distributed along outer circle, each tooth socket 2,3 and of tooth top
1 lateral wall of cutter ring ontology is sintered filling tungsten carbide matrix 4.Cutter ring ontology 1 decide what is right and what is wrong face be variable cross-section flat-tope structure, cutter ring sheet
1 lateral wall of body is step design, and tooth socket 2 decides what is right and what is wrong face as inverted trapezoidal structure.
A kind of preparation process of cemented tungsten carbide carcass cutter ring, comprising the following steps:
A, figure processing mold, including 1 shaped mold of cutter ring ontology and assisted sintering mold Mold Making: are pressed；
B, cutter ring makes: by the tooth socket 2 of figure processing 1 excircle of cutter ring ontology；
C, it mixes powder: powder being packed into mixed powder machine by formula rate and carries out sufficiently mixed powder, mixing time is 0.5~1 hour, powder
Expect that the mixed rear drying bucket that is packed into carries out heat preservation preservation, storage temperature is 75 DEG C；
D, it charges: being on a vibration table fixed on cutter ring ontology 1 at the position of 1 shaped mold additional space of cutter ring ontology,
It is packed into powder, intermittent vibration is carried out using shake table, by powder jolt ramming, then assisted sintering mold is installed；
E, sintering preheating: a full set of mold being placed in preheating furnace and is preheated, and preheating temperature is 280 DEG C~420 DEG C, in advance
The hot time is 1~2 hour；
F, carcass is sintered: preheating after the completion caking alloy in proportion, then a full set of mold is placed in sintering furnace
It is sintered, sintering temperature is 1120 DEG C~1170 DEG C, and sintering time is 2~3 hours；
G, cooling: removing sintering furnace for mold after the completion of sintering, covers heat shield, washes away from mold bottom with water to mold
Cool down, powder directional solidification is made to crystallize to form carcass；
H, polishing cleaning: a full set of mold is demoulded, with pneumatic grinding wheel polishing carcass surface spikes overlap.
Claims (4)
1. a kind of cemented tungsten carbide carcass cutter ring, including circular cutter ring ontology (1) and tungsten carbide matrix (4), the cutter ring
Ontology (1) outer circle radially offers several tooth sockets (2), and tooth socket (2) is uniformly distributed along cutter ring ontology (1) excircle, and feature exists
In:
Each tooth socket (2) and its tooth top (3) and cutter ring ontology (1) lateral wall are sintered filling tungsten carbide matrix (4).
2. a kind of cemented tungsten carbide carcass cutter ring according to claim 1, it is characterised in that: cutter ring ontology (1) is decided what is right and what is wrong face
For the flat-tope structure of variable cross-section, cutter ring ontology (1) lateral wall is step design, the depth and cutter ring ontology (1) lateral wall of step
Tungsten carbide matrix (4) thickness it is identical.
3. a kind of cemented tungsten carbide carcass cutter ring according to claim 1, it is characterised in that: tooth socket (2) decides what is right and what is wrong face to fall
Trapezium structure.
4. a kind of cemented tungsten carbide carcass cutter ring according to claim 1, it is characterised in that: radius of circle where tooth top (3)
It is identical as tooth top tungsten carbide matrix (4) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279262.6U CN208513646U (en) | 2018-08-09 | 2018-08-09 | A kind of cemented tungsten carbide carcass cutter ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821279262.6U CN208513646U (en) | 2018-08-09 | 2018-08-09 | A kind of cemented tungsten carbide carcass cutter ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208513646U true CN208513646U (en) | 2019-02-19 |
Family
ID=65333459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821279262.6U Active CN208513646U (en) | 2018-08-09 | 2018-08-09 | A kind of cemented tungsten carbide carcass cutter ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208513646U (en) |
-
2018
- 2018-08-09 CN CN201821279262.6U patent/CN208513646U/en active Active
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