CN107524449B - Anti-mud-caking cutter seat for shield machine and manufacturing method thereof - Google Patents
Anti-mud-caking cutter seat for shield machine and manufacturing method thereof Download PDFInfo
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- CN107524449B CN107524449B CN201710606990.7A CN201710606990A CN107524449B CN 107524449 B CN107524449 B CN 107524449B CN 201710606990 A CN201710606990 A CN 201710606990A CN 107524449 B CN107524449 B CN 107524449B
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- lubricating coating
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- mud
- shield
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- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 44
- 238000000576 coating method Methods 0.000 claims abstract description 44
- 238000007751 thermal spraying Methods 0.000 claims abstract description 19
- 239000010439 graphite Substances 0.000 claims abstract description 16
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- 238000009825 accumulation Methods 0.000 claims abstract description 7
- 230000014759 maintenance of location Effects 0.000 claims abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical group [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 12
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000037452 priming Effects 0.000 claims description 9
- 238000010285 flame spraying Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000005488 sandblasting Methods 0.000 claims description 7
- LNSPFAOULBTYBI-UHFFFAOYSA-N [O].C#C Chemical group [O].C#C LNSPFAOULBTYBI-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 claims description 2
- 238000007750 plasma spraying Methods 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 5
- 239000004927 clay Substances 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
An anti-mud-caking cutter seat for a shield machine and a manufacturing method thereof belong to the field of shield machines and are used for solving the problem of mud caking of a cutter head during clay stratum tunneling operation of the shield machine. The anti-mud-caking cutter seat for the shield machine comprises a cutter seat body and a self-lubricating coating, wherein the cutter seat body is a detachable cylindrical cutter seat, and the manufacturing method is to prepare the self-lubricating coating on the end face of the cylindrical cutter seat. The self-lubricating coating comprises a nickel-graphite raw material system, and the preparation method of the self-lubricating coating adopts a thermal spraying technology. The invention thermally sprays the self-lubricating coating on the end face of the tool apron, reduces the friction coefficient between the end face of the tool apron and the rock stratum cutting material, the removal of the dregs is quickened, the phenomenon of mud accumulation of a shield cutter disc which is finally formed due to the retention and accumulation of rock stratum particles on the end face of the cutter seat is restrained, the whole efficiency of the shield tunneling operation of the shield tunneling machine in clay stratum is improved, so that the economic and social benefits of reducing the shield construction cost and shortening the construction period are realized.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to an anti-mud-caking cutter seat for a shield machine and a manufacturing method thereof.
Background
The shield machine is used as a common excavating tool and has wide application in engineering construction, mining and other work. When the shield tunneling machine is used for tunneling clay stratum, clay sandy stratum, mudstone siltstone and matrix, etc., the soil body is rich in clay mineral matters, and has small grain size and high viscosity, and the rock stratum cutting matter is easy to be adhered to the cutter seat to form slag soil accumulation. With the increase of the accumulation quantity of the dregs, the extrusion action of the cutterhead on the dregs is continuously increased, the dregs become firm mud cakes gradually, the mud cakes embed the cutter, the cutting capability of the cutter is reduced, the torque of the cutterhead and the pushing resistance of the shield machine are rapidly increased, the tunneling speed of the shield machine is slowed down, the construction period is prolonged, moreover, the friction between the mud cake and the cutter head and the friction between the mud cake and the nose can cause accelerated abrasion of the end face of the cutter head, and the generated heat energy and the generated temperature are rapidly increased, so that the performance of the rubber sealing piece is reduced, the service life of the main bearing of the cutter head is shortened, the damage of the main bearing is accelerated, and the safety of shield construction is threatened.
The existing technical method for preventing and controlling the cutterhead mud cake comprises the steps of improving the working parameters of a shield, arranging a high-pressure water pipe injection device, selecting a soil body modifier and the like, and has the problems of low reliability, complex technology, high cost and the like although the existing technical method has a certain effect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an anti-mud cutter seat for a shield machine and a manufacturing method thereof. The technical scheme for solving the technical problem is that a self-lubricating coating is coated on the end face of the tool apron.
The mud-caking-resistant cutter holder for the shield machine consists of a cutter holder body and a self-lubricating coating, wherein the end face of the cutter holder body is coated with the self-lubricating coating.
The tool apron body is a detachable cylindrical tool apron.
The self-lubricating coating raw material component system is nickel-graphite.
The thickness of the self-lubricating coating is 0.1-2 mm.
The volume percentage content of graphite in the self-lubricating coating raw material component system is 10% -60%.
A manufacturing method of an anti-mud-caking cutter seat for a shield machine enables a self-lubricating coating to be coated on the end face of a cutter seat body through a thermal spraying technology.
The thermal spraying technique includes flame spraying, plasma spraying and electric arc spraying.
The thermal spraying technology comprises surface sand blasting treatment, thermal spraying of a nickel-aluminum alloy priming layer and thermal spraying of a nickel-graphite self-lubricating coating.
The surface sand blasting treatment adopts compressed air to impact sand particles on the metal surface, so that the metal surface is clean and has roughness.
The thermal spraying nickel-aluminum alloy priming layer adopts an oxygen-acetylene flame method, the powder is nickel-coated aluminum, and the granularity is 140-325 meshes; the main technological parameters of flame spraying are as follows: oxygen pressure of 0.1-0.5 MPa, acetylene pressure of 0.1-03 MPa and acetylene flow rate of 45m 3 And/h, the air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the priming layer is 20-100 microns.
The thermal spraying nickel-graphite self-lubricating coating adopts an oxygen-acetylene flame method, the powder is nickel-coated graphite, and the granularity is 140-325 meshes. The main technological parameters of flame spraying are as follows: oxygen pressure of 0.1-0.5 MPa, acetylene pressure of 0.1-03 MPa and acetylene flow rate of 45m 3 And/h, the air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the self-lubricating coating is 0.1-2 mm.
The beneficial effects of the invention are as follows:
1) The friction coefficient of the end face of the cutter holder is reduced, stratum particles are promoted to be rapidly discharged, retention and accumulation of the stratum particles are avoided, the problem of mud cake formation of the cutter of the shield cutter head is restrained from the source, and the effect is better.
2) The shield operation cost is low without changing the shield device and working parameters and using soil modifier.
3) The tool apron end face is subjected to simple and convenient spraying treatment by using the tool apron dismounting and maintaining time, and the production efficiency is high.
Drawings
Fig. 1 is a schematic view of the end face of a detachable cutter holder and a self-lubricating coating structure thereof, 1 is a detachable cylindrical cutter holder, 2 is a self-lubricating coating, and 3 is a cutter head mounting hole.
FIG. 2 is a comparison of the friction coefficients of self-lubricating coated and uncoated steel sheets.
Detailed Description
The invention will be further illustrated by means of a specific example with reference to fig. 1.
The invention relates to an anti-mud-caking cutter holder for a shield machine, which consists of a cutter holder body and a self-lubricating coating, wherein the end surface of the cutter holder body is coated with the self-lubricating coating. The tool apron body is a detachable cylindrical tool apron. The self-lubricating coating raw material component system is nickel-graphite. The thickness of the self-lubricating coating is 0.1mm. The volume percentage content range of graphite in the self-lubricating coating raw material component system is 10%.
The invention relates to an anti-mud-caking cutter holder for a shield machine, which consists of a cutter holder body and a self-lubricating coating, wherein the end surface of the cutter holder body is coated with the self-lubricating coating. The tool apron body is a detachable cylindrical tool apron. The self-lubricating coating raw material component system is nickel-graphite. The thickness of the self-lubricating coating is 2mm. The volume percentage content range of graphite in the self-lubricating coating raw material component system is 60%.
Before the cutter is installed, the end face of the cutter holder body is sequentially subjected to sand blasting cleaning, thermal spraying of a priming layer and thermal spraying of a self-lubricating coating.
The sand blasting cleaning adopts a processing technology that compressed air is adopted to impact sand grains with a certain size on the metal surface according to a certain angle. The metal is clean after sand blasting treatment and has certain roughness.
The thermal spraying priming layer adopts an oxygen-acetylene flame method, the powder is nickel-coated aluminum (Ni 80Al 20), and the granularity is 140-325 meshes. The main technological parameters of flame spraying are as follows: oxygen pressure of 0.1-0.5 MPa, acetylene pressure of 0.1-03 MPa and acetylene flow rate of 45m 3 And/h, the air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the priming layer is 20-100 microns.
The thermal spraying self-lubricating coating adopts an oxygen-acetylene flame method, the powder is nickel-coated graphite (Ni 25C), and the granularity is 140-325 meshes. The main technological parameters of flame spraying are as follows: oxygen pressure is 0.1-0.5 MPa, acetylene pressureForce is 0.1-03 MPa, acetylene flow is 45m 3 And/h, the air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the self-lubricating coating is 0.1-2 mm.
After the self-lubricating coating is sprayed on the end face of the tool apron, the surface quality of the coating is checked, and whether omission and uniformity are caused is important. And installing a cutter after the test is qualified.
The test data shows that the stable friction coefficient of the self-lubricating coating is about 0.3 or less, while the friction coefficient of the uncoated steel sheet surface is about 0.4 or so under the same conditions, as shown in fig. 2. Therefore, the self-lubricating coating can reduce the friction coefficient by more than 30%, is beneficial to promoting the removal of soil particles and reduces the phenomenon of mud accumulation.
The foregoing is merely an embodiment of the present invention, and the spraying method, the process parameters, the powder components, etc. are not specifically listed, and those skilled in the art may also make process additions, deletions and modifications without departing from the inventive concept, which are all within the scope of the present invention.
Claims (1)
1. The utility model provides a shield constructs quick-witted anti knot mud blade holder which characterized in that: the anti-mud cutter seat consists of a cutter seat body and a self-lubricating coating, wherein the end surface of the cutter seat body is coated with the self-lubricating coating; the tool apron body is a detachable cylindrical tool apron; the self-lubricating coating raw material component system is nickel-graphite; the thickness of the self-lubricating coating is 0.1-2 mm, and the volume percentage content of graphite in the raw material component system of the self-lubricating coating is 10-60%; the friction coefficient of the end face of the cutter holder is reduced, the rapid removal of stratum particles is promoted, the retention and accumulation of the stratum particles are avoided, and the problem of mud cake formation of a cutter head of the shield cutter is restrained from the source;
coating a self-lubricating coating on the end face of the tool apron body through a thermal spraying technology; the thermal spraying technology comprises flame spraying, plasma spraying and electric arc spraying; the thermal spraying technology comprises surface sand blasting treatment, thermal spraying of a nickel-aluminum alloy priming layer and thermal spraying of a nickel-graphite self-lubricating coating; the surface sand blasting treatment adopts compressed air to impact sand particles on the metal surface, so that the metal surface is clean and has roughness;
the thermal spraying nickel-aluminum alloy priming layer adopts an oxygen-acetylene flame method, the powder is nickel-coated aluminum, and the granularity is 140-325 meshes; the main technological parameters of flame spraying are as follows: oxygen pressure of 0.1-0.5 MPa, acetylene pressure of 0.1-03 MPa and acetylene flow rate of 45m 3 The air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the priming layer is 20-100 microns; the thermal spraying nickel-graphite self-lubricating coating adopts an oxygen-acetylene flame method, wherein the powder is nickel-coated graphite, and the granularity is 140-325 meshes; the main technological parameters of flame spraying are as follows: oxygen pressure of 0.1-0.5 MPa, acetylene pressure of 0.1-03 MPa and acetylene flow rate of 45m 3 And/h, the air pressure is 0.2-0.4 MPa, the powder feeding amount is 10-30 g/min, and the thickness of the self-lubricating coating is 0.1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606990.7A CN107524449B (en) | 2017-07-24 | 2017-07-24 | Anti-mud-caking cutter seat for shield machine and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606990.7A CN107524449B (en) | 2017-07-24 | 2017-07-24 | Anti-mud-caking cutter seat for shield machine and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN107524449A CN107524449A (en) | 2017-12-29 |
| CN107524449B true CN107524449B (en) | 2024-04-16 |
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