CN107060789A - The Disc Cutter Ring Material and Technology for Heating Processing of a kind of shield cutter - Google Patents
The Disc Cutter Ring Material and Technology for Heating Processing of a kind of shield cutter Download PDFInfo
- Publication number
- CN107060789A CN107060789A CN201611269511.9A CN201611269511A CN107060789A CN 107060789 A CN107060789 A CN 107060789A CN 201611269511 A CN201611269511 A CN 201611269511A CN 107060789 A CN107060789 A CN 107060789A
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- CN
- China
- Prior art keywords
- cutter
- cutter ring
- shield
- ring
- dentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Abstract
The present invention relates to the Disc Cutter Ring Material and Technology for Heating Processing of shield cutter technical field, more particularly to a kind of shield cutter.The chemical element composition by weight of Disc Cutter Ring Material is：C：0.46 part；Si：0.91 part；Mn：0.39 part；P：0.009 part；S：0.002 part；Cr：4.39 part；Ni：0.14 part；Cu：0.02 part；Mo：1.24 part；V：1.15 parts, surplus is Fe.Cutter ring Technology for Heating Processing is：Cutter ring is placed in vacuum drying oven；Constant-speed heating is to 660 DEG C in 1h, be incubated at 660 DEG C 2h in 1h by 660 DEG C of constant-speed heatings to 870 DEG C, be incubated 2h at 870 DEG C；In 0.5 1h, from 870 DEG C of constant-speed heatings to 1050 DEG C, 1050 DEG C of 0.5 1h of insulation；Cutter ring is placed again into stove, and tempering is twice.It can improve the anti-wear performance of shield cutter, the overall service life of extension cutter.
Description
Technical field
The present invention relates to shield cutter technical field, more particularly to a kind of Disc Cutter Ring Material of shield cutter and heat treatment work
Skill.
Background technology
Shield cutting tool is mainly used in the shield machine driving in subway, tunnel, and its structure is that one is welded before cutter hub
Row or two rows more than cylindric alloy.When shield cutter is circumferentially rotated with cutterhead, start cutting, hold when meeting sandy gravel
Easily there is cutter hub rapid wear and alloy bursts apart phenomenon, but when rotating counterclockwise, back, will by the heavy wear of object
Causing after the face heavy wear of cutter hub dorsal horn impact to fall master alloying causes cutter to scrap.Therefore, it is necessary to the wear-resisting of shield cutter
Performance is improved, and is improved by the structural behaviour to shield cutter, improves the anti-wear performance of shield cutter, reduces shield
The degree of wear of the cutter during excavation, correspondingly extends the service life of shield cutter, and reduction is safeguarded or replacement cost.
Chinese invention patent, publication number：204476417U, publication date：On July 15th, 2015, it is related to novel wear resistant shield
Cutter, including shield cutter hub and hard alloy blocks, the shield cutter hub include several alloy grooves being arranged on shield cutter hub, institute
State hard alloy blocks insertion to be arranged in described alloy groove, set on the working face that the shield cutter hub is contacted with cutting object
Tungsten carbide particle wearing layer is put, the tungsten carbide particle wearing layer includes metallic matrix and tungsten carbide particle, the tungsten carbide
Grain cladding is arranged in metallic matrix.The novel wear resistant shield cutter that the present invention is provided, tungsten carbide particle welding wear-resistant layer is connected on knife
On the working face of body, anti-wear performance of the shield cutter in operation has been effectively ensured；The service life of shield cutter is extended, is dropped
Low replacing or maintenance cost.Its weak point is：The shield cutter of the patent is substantially to utilize tungsten carbide particle wearing layer
Anti-wear performance improve the whole service life of cutter, complex process, cost is higher.
The content of the invention
1. the invention technical problem to be solved
For prior art shield cutter anti-wear performance it is poor the problem of, the invention provides a kind of cutter ring of shield cutter
Material and Technology for Heating Processing.It can improve the anti-wear performance of shield cutter, the overall service life of extension cutter.
2. technical scheme
To solve the above problems, the technical scheme that the present invention is provided is：
A kind of block dentation shield cutter, it includes cutter hub and cutter ring, and cutter hub and cutter ring are annular shape, cutter ring inner surface with
The outer surface connection of cutter hub, cutter hub is stepped from inside to outside, and the inner surface of cutter hub and the outer surface of cutterhead are connected, on cutter ring
It is even to be provided with block tooth.
Preferably, the groove matched with block tooth, shape of the groove in cutter ring are uniformly provided with the periphery of described cutter ring
Shape is cuboid.
Preferably, described block tooth is higher by cutter ring periphery 1-10mm.
Preferably, uniform around the center of circle of cutterhead to have fixing hole, the center of circle of fixing hole turns into the distribution circle in the cutterhead center of circle.
Preferably, described block tooth is higher by cutter ring upper and lower surface 1-10mm respectively.
Preferably, the section of cutter ring is trapezoidal, and the outer surface side ratio on cutter ring close to cutter hub is close to cutter ring outer surface one
The thickness of side is big, from the inner surface of cutter ring to the outer surface of cutter ring, and the thickness of cutter ring is in gradually decline trend.
Preferably, the outer surface of cutter ring circumference is provided with chamfering.
The Disc Cutter Ring Material of a kind of piece of dentation shield cutter, its chemical element composition by weight is：C：0.46 part；Si：0.91
Part；Mn：0.39 part；P：0.009 part；S：0.002 part；Cr：4.39 part；Ni：0.14 part；Cu：0.02 part；Mo：1.24 part；V：
1.15 parts, surplus is Fe.
The cutter ring Technology for Heating Processing of a kind of piece of dentation shield cutter, comprises the following steps：
A, the cutter ring of a kind of piece of dentation shield cutter described in claim 1 is placed in vacuum drying oven；
B, in 1h constant-speed heating to 660 DEG C, 660 DEG C be incubated 2h；
C, in 1h by 660 DEG C of constant-speed heatings to 870 DEG C, 870 DEG C be incubated 2h；
D, in 0.5-1h, from 870 DEG C of constant-speed heatings to 1050 DEG C, 1050 DEG C of insulation 0.5-1h；
E, be cooled to 0 DEG C in 0.5-1h from 1050 DEG C, cutter recalled out of stove it is air-cooled after；
F, cutter ring are placed again into stove, and tempering is twice.
Preferably, it is the step of tempering in step F：0 DEG C is at the uniform velocity warming up to 370 DEG C, is incubated 0-15min at 370 DEG C, at the uniform velocity
550 DEG C are heated up to, 2h is incubated at 550 DEG C；0 DEG C is at the uniform velocity cooled to from 550 DEG C, 1h is stopped.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) anti-wear performance of the shield cutter in operation has been effectively ensured in the present invention；Extend the use longevity of shield cutter
Life, reduces replacing or maintenance cost；
(2) a kind of block dentation shield cutter of the invention, using cutter hub and the circular ring structure of cutter ring, annulus is made by cutter
Shape, is uniformly provided with block tooth on cutter ring, using the protrusion structure of block tooth, destruction driving is carried out to ground, to realize excavation ground
The effect of layer；
(3) a kind of block dentation shield cutter of the invention, is uniformly provided with what is matched with block tooth on the periphery of cutter ring
Groove, for loading block tooth, groove is set as the cuboid matched with block odontoid, for being coincide closely with block tooth, is easy to knife
The assembling processing of tool；
(4) the block tooth being distributed on a kind of block dentation shield cutter of the invention, cutter ring periphery is higher by cutter ring periphery 1-
10mm so that cutter ring periphery is uneven whole, during cutter use, generation resistance is contacted with ground, so as to rock and
The excavation of soil layer；
(5) fixing hole on a kind of block dentation shield cutter of the invention, cutterhead is used to fix shield equipment, fixing hole
Aperture match with the diameter of bolt, be easy to using bolt by the cutterhead fixing hole on stage property, be fixed on shield equipment, use
Tunneled in subway, constructing tunnel；
(6) the block tooth being distributed in a kind of block dentation shield cutter of the invention, cutter ring upper and lower surface is higher by cutter ring surface 1-
10mm so that cutter ring upper and lower surface is uneven whole, during cutter use, with rock, granite and superhard stone isolith
When stone soil layer is contacted, resistance is produced, so as to the excavation of rock and soil layer；
(7) a kind of block dentation shield cutter of the invention, from the inner surface of cutter ring to the outer surface of cutter ring, the thickness of cutter ring
In gradually decline trend, the fastness of the outer surface connection of cutter ring and cutter hub is on the one hand increased, cutter ring is on the other hand increased
Performance is excavated, is easy to the block tooth of cutter ring and cutter ring outer surface to exert a force together, hard rock is tunneled；
(8) chamfering on a kind of block dentation shield cutter of the invention, cutter ring further increases the anti-wear performance of cutter ring,
Hard rock can be tunneled together with block tooth；
(9) Disc Cutter Ring Material of a kind of piece of dentation shield cutter of the invention, hardness reaches 180HBW, with cutter ring, greatly
Width improves the anti-wear performance of cutter, extends cutting-tool's used life；
(10) Technology for Heating Processing of a kind of piece of dentation shield cutter of the invention, the shield cutter through Overheating Treatment, hardness
56-58HRC is reached, the hardness and anti-wear performance of cutter ring is improved, extends cutting-tool's used life.
Brief description of the drawings
Fig. 1 is cutter structure schematic diagram of the invention；
Fig. 2 is cutter ring Technology for Heating Processing figure of the invention.
Embodiment
To further appreciate that present disclosure, with reference to drawings and Examples, the present invention is described in detail.
A kind of block dentation shield cutter, it includes cutter hub 1 and cutter ring 3, and cutter hub 1 and cutter ring 3 are in annular shape, cutter ring 3
Surface is connected with the outer surface of cutter hub 1, it is characterised in that cutter hub 1 is stepped from inside to outside, inner surface and the cutterhead 2 of cutter hub 1
Outer surface connection, be uniformly provided with block tooth 302 on cutter ring 3.
The groove matched with block tooth 302, shape of the groove in cutter ring 3 are uniformly provided with the periphery of described cutter ring 3
For cuboid；Described block tooth 302 is higher by the periphery 1-10mm of cutter ring 3；Uniformly there is fixing hole around the center of circle of cutterhead 2, it is fixed
The distribution that the center of circle in hole turns into the center of circle of cutterhead 2 is justified；Described block tooth 302 is higher by the upper and lower surface 1-10mm of cutter ring 3 respectively；Cutter ring 3
Section to be trapezoidal, on cutter ring 3 close to the outer surface side of cutter hub 1 than close the outer surface side of cutter ring 3 thickness greatly, from cutter ring
3 inner surface is to the outer surface of cutter ring 3, and the thickness of cutter ring 3 is in gradually decline trend；The outer surface of the circumference of cutter ring 3 is provided with
Angle 32.
The Disc Cutter Ring Material of a kind of piece of dentation shield cutter, its chemical element composition by weight is：C：0.46 part；Si：0.91
Part；Mn：0.39 part；P：0.009 part；S：0.002 part；Cr：4.39 part；Ni：0.14 part；Cu：0.02 part；Mo：1.24 part；V：
1.15 parts, surplus is Fe.
The cutter ring Technology for Heating Processing of a kind of piece of dentation shield cutter, comprises the following steps：
A, the cutter ring of a kind of piece of dentation shield cutter described in claim 1 is placed in vacuum drying oven；
B, in 1h constant-speed heating to 660 DEG C, 660 DEG C be incubated 2h；
C, in 1h by 660 DEG C of constant-speed heatings to 870 DEG C, 870 DEG C be incubated 2h；
D, in 0.5-1h, from 870 DEG C of constant-speed heatings to 1050 DEG C, 1050 DEG C of insulation 0.5-1h；
E, be cooled to 0 DEG C in 0.5-1h from 1050 DEG C, cutter recalled out of stove it is air-cooled after；
F, cutter ring are placed again into stove, and tempering is twice.
It is the step of tempering in the step F：0 DEG C is at the uniform velocity warming up to 370 DEG C, and 0-15min is incubated at 370 DEG C, at the uniform velocity adds
Temperature is incubated 2h to 550 DEG C at 550 DEG C；0 DEG C is at the uniform velocity cooled to from 550 DEG C, 1h is stopped.
Embodiment 1
With reference to Fig. 1-2, a kind of block dentation shield cutter, it includes cutter hub 1 and cutter ring 3, and cutter hub 1 and cutter ring 3 are annulus
Shape, the inner surface of cutter ring 3 is connected with the outer surface of cutter hub 1, it is characterised in that cutter hub 1 is stepped from inside to outside, cutter hub 1 it is interior
Surface is connected with the outer surface of cutterhead 2, and block tooth 302 is uniformly provided with cutter ring 3.
The groove matched with block tooth 302, shape of the groove in cutter ring 3 are uniformly provided with the periphery of described cutter ring 3
For cuboid；Described block tooth 302 is higher by the periphery 1-10mm of cutter ring 3；Uniformly there is fixing hole around the center of circle of cutterhead 2, it is fixed
The distribution that the center of circle in hole turns into the center of circle of cutterhead 2 is justified；Described block tooth 302 is higher by the upper and lower surface 1-10mm of cutter ring 3 respectively；Cutter ring 3
Section to be trapezoidal, on cutter ring 3 close to the outer surface side of cutter hub 1 than close the outer surface side of cutter ring 3 thickness greatly, from cutter ring
3 inner surface is to the outer surface of cutter ring 3, and the thickness of cutter ring 3 is in gradually decline trend；The outer surface of the circumference of cutter ring 3 is provided with
Angle 32.
Cutter is made annular shape, block tooth is uniformly provided with cutter ring by the present invention using cutter hub and the circular ring structure of cutter ring,
Using the protrusion structure of block tooth, destruction driving is carried out to ground, to realize the effect for excavating rock-soil layer；On the periphery of cutter ring
The groove matched with block tooth is uniformly provided with, for loading block tooth, groove is set as the cuboid matched with block odontoid, is used for
It is coincide closely with block tooth, is easy to the assembling of cutter to process；The block tooth being distributed on cutter ring periphery is higher by cutter ring periphery 1-10mm,
So that cutter ring periphery is uneven whole, during cutter use, generation resistance is contacted with ground, so as to rock and soil layer
Excavate；Fixing hole on cutterhead is used to fix shield equipment, and aperture and the diameter of bolt of fixing hole match, be easy to utilize spiral shell
Bolt is fixed on shield equipment by the cutterhead fixing hole on stage property, is tunneled for subway, constructing tunnel；Cutter ring upper and lower surface
The block tooth of upper distribution is higher by cutter ring surface 1-10mm so that cutter ring upper and lower surface is uneven whole, during cutter use, with
When the rocky soils such as rock, granite and superhard stone are contacted, resistance is produced, so as to the excavation of rock and soil layer；From cutter ring
Inner surface is to the outer surface of cutter ring, and on the one hand the thickness of cutter ring increase the outer surface of cutter ring and cutter hub in gradually decline trend
The fastness of connection, on the other hand increases cutter ring and excavates performance, be easy to the block tooth of cutter ring and cutter ring outer surface to exert a force together, dig
Enter hard rock；Chamfering on cutter ring further increases the anti-wear performance of cutter ring, and block tooth can tunnel together it is hard
Rock.
Embodiment 2
With reference to Fig. 1-2, the Disc Cutter Ring Material of a kind of piece of dentation shield cutter, its chemical element composition by weight is：C：0.46
Part；Si：0.91 part；Mn：0.39 part；P：0.009 part；S：0.002 part；Cr：4.39 part；Ni：0.14 part；Cu：0.02 part；Mo：
1.24 part；V：1.15 parts, surplus is Fe.
The Disc Cutter Ring Material of the present invention, hardness reaches 180HBW, with the anti-wear performance that cutter on cutter ring, greatly improved,
Extend cutting-tool's used life.
Embodiment 3
With reference to Fig. 1-2, the cutter ring Technology for Heating Processing of a kind of piece of dentation shield cutter comprises the following steps：
A, the cutter ring of a kind of piece of dentation shield cutter described in claim 1 is placed in vacuum drying oven；
B, in 1h constant-speed heating to 660 DEG C, 660 DEG C be incubated 2h；
C, in 1h by 660 DEG C of constant-speed heatings to 870 DEG C, 870 DEG C be incubated 2h；
D, in 0.5-1h, from 870 DEG C of constant-speed heatings to 1050 DEG C, 1050 DEG C of insulation 0.5-1h；
E, be cooled to 0 DEG C in 0.5-1h from 1050 DEG C, cutter recalled out of stove it is air-cooled after；
F, cutter ring are placed again into stove, and tempering is twice.
It is the step of tempering in the step F：0 DEG C is at the uniform velocity warming up to 370 DEG C, and 0-15min is incubated at 370 DEG C, at the uniform velocity adds
Temperature is incubated 2h to 550 DEG C at 550 DEG C；0 DEG C is at the uniform velocity cooled to from 550 DEG C, 1h is stopped.
By the shield cutter of the Technology for Heating Processing, hardness reaches 56-58HRC, improves the hardness of cutter ring and wear-resisting
Performance, extends cutting-tool's used life.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (3)
1. the Disc Cutter Ring Material of a kind of piece of dentation shield cutter, its chemical element composition by weight is：C：0.46 part；Si：0.91 part；
Mn：0.39 part；P：0.009 part；S：0.002 part；Cr：4.39 part；Ni：0.14 part；Cu：0.02 part；Mo：1.24 part；V：1.15
Part, surplus is Fe.
2. the cutter ring Technology for Heating Processing of a kind of piece of dentation shield cutter, comprises the following steps：
A, the cutter ring of a kind of piece of dentation shield cutter described in claim 1 is placed in vacuum drying oven；
B, in 1h constant-speed heating to 660 DEG C, 660 DEG C be incubated 2h；
C, in 1h by 660 DEG C of constant-speed heatings to 870 DEG C, 870 DEG C be incubated 2h；
D, in 0.5-1h, from 870 DEG C of constant-speed heatings to 1050 DEG C, 1050 DEG C of insulation 0.5-1h；
E, be cooled to 0 DEG C in 0.5-1h from 1050 DEG C, cutter recalled out of stove it is air-cooled after；
F, cutter ring are placed again into stove, and tempering is twice.
3. the cutter ring Technology for Heating Processing of a kind of piece of dentation shield cutter according to claim 2, it is characterised in that step F
The step of middle tempering is：0 DEG C is at the uniform velocity warming up to 370 DEG C, is incubated 0-15min at 370 DEG C, uniform heating is to 550 DEG C, at 550 DEG C
It is incubated 2h；0 DEG C is at the uniform velocity cooled to from 550 DEG C, 1h is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269511.9A CN107060789A (en) | 2016-12-31 | 2016-12-31 | The Disc Cutter Ring Material and Technology for Heating Processing of a kind of shield cutter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269511.9A CN107060789A (en) | 2016-12-31 | 2016-12-31 | The Disc Cutter Ring Material and Technology for Heating Processing of a kind of shield cutter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385017A (en) * | 2017-09-30 | 2018-08-10 | 湖北川冶科技有限公司 | A kind of shield machine Disc Cutter Ring Material |
| CN109957702A (en) * | 2019-02-26 | 2019-07-02 | 唐山志威科技有限公司 | The preparation method of high rigidity, high tenacity development machine cutter ring steel ZW552 |
| CN113338968A (en) * | 2021-06-22 | 2021-09-03 | 马鞍山灵山机械设备科技有限公司 | Novel heavy cutter ring and production process thereof |
-
2016
- 2016-12-31 CN CN201611269511.9A patent/CN107060789A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385017A (en) * | 2017-09-30 | 2018-08-10 | 湖北川冶科技有限公司 | A kind of shield machine Disc Cutter Ring Material |
| CN109957702A (en) * | 2019-02-26 | 2019-07-02 | 唐山志威科技有限公司 | The preparation method of high rigidity, high tenacity development machine cutter ring steel ZW552 |
| CN113338968A (en) * | 2021-06-22 | 2021-09-03 | 马鞍山灵山机械设备科技有限公司 | Novel heavy cutter ring and production process thereof |
| CN113338968B (en) * | 2021-06-22 | 2023-09-26 | 马鞍山灵山机械设备科技有限公司 | Heavy knife ring and production process thereof |
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Application publication date: 20170818 |