CN105483560B - Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes - Google Patents
Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes Download PDFInfo
- Publication number
- CN105483560B CN105483560B CN201510933338.7A CN201510933338A CN105483560B CN 105483560 B CN105483560 B CN 105483560B CN 201510933338 A CN201510933338 A CN 201510933338A CN 105483560 B CN105483560 B CN 105483560B
- Authority
- CN
- China
- Prior art keywords
- coating
- column
- bore area
- endoporus
- carried out
- 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.)
- Expired - Fee Related
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Classifications
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- 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
- C22C38/02—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
- 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
Abstract
The invention discloses a kind of coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes, the protective coating is by 304 stainless steels, Ni, Cr, Si and B compositions.Determine that uncoated column hole size confirms coating number of times, clean column bore area, blasting treatment is carried out with compressed air and Brown Alundum particle column endoporus, sand blasted surface is examined after drying, the protective coating powder column endoporus of advanced processing is coated operation using with plasma spraying technology, detect and record coating layer thickness, observe coating surface quality, it is cooled to after room temperature and removes workpiece and carry out sealing pores, uniformly brushed twice and dried at endoporus with epoxy resin, honing and the rolling of twice are carried out to coating.The present invention obtains the overcoat of even compact by plasma spraying technology and rolling techniques in column bore area, and with excellent anti-corrosion, anti-wear performance, can effectively improve the service life of hydraulic support, and strengthen its reliability.
Description
Technical field
The present invention relates to protective coating field, specifically a kind of coal mine hydraulic supporting column bore area is protected with stainless steel
Coating and coating processes.
Background technology
Hydraulic support is using emulsion as dynamic medium, by a kind of plant equipment that hydraulic energy transfer is mechanical energy.
During modern comprehensive mechanical coal mining, the supporting and management of face roof are the key factors of relation safety production, and real
Existing fully-mechanized mining working top, the Unique Device of bottom plate supporting are exactly hydraulic support.It is supported the use with coal-winning machine, scrapper conveyor, is realized
Coal mining comprehensive mechanization, and provide safety guarantee to greatest extent for coal miner.
Column is one of critical piece of hydraulic support, and stud materials are generally 27SiMn steel, the material corrosion resistance compared with
Difference, at present when manufacturing column, improves the anti-corrosion and anti-wear performance on surface more than outer surface using electro-plating method, and column endoporus
Surface can not but realize the manufacture of effective overcoat, but in actual use, hydraulic support column endoporus need to be passed through emulsification
Contain the Korrosionsmediums, column endoporus such as substantial amounts of chlorion, sulfate ion, hydrogen sulfide in liquid and underground water, but underground water
Corrosion will occur in a short time for surface, after bore area corrosion reaches to a certain degree, may result in seal failure and cause
Hydraulic support can not normal work, have a strong impact on the safety in production in colliery.
The content of the invention
It is an object of the invention to provide a kind of coal mine hydraulic supporting column bore area stainless steel protective coating and painting
Coating process, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of coal mine hydraulic supporting column bore area stainless steel protective coating, by the raw material group of following percetage by weight
Into：Si 1.15~1.21%, Ni 1.85~1.95%, Cr 30.00~32.02%, Mn 0.90~1.02%, Mo 1.20
~1.38%, Fe surplus.
A kind of coating processes of coal mine hydraulic supporting column bore area stainless steel protective coating, coating step is as follows：
(1) column endoporus original size is determined, diameter of bore is measured and records；
(2) determine that column endoporus needs the one-sided thickness of applying coating, coating number of times is confirmed according to thickness requirement；
(3) column bore area is cleaned using acetone, to remove surface and oil contaminant；
(4) carried out with 0.3~0.5MPa compressed air and the Brown Alundum particle column endoporus of 40~45 mesh at sandblasting
Reason, sandblasting angle is vertical 80~90 DEG C of bore area, is then dried up again with compressed air, removes the grains of sand of remained on surface and floats
Ash；
(5) sand blasted surface is examined, the column handled well is placed into workshop to be coated；
(6) 50~70min will be dried in the drying box for needing 95~105 DEG C of the powder placement coated by shifting to an earlier date 1h, powder
Particle is 300 mesh；
(7) be loaded column workpiece, and equipment is debugged, and is coated behaviour using plasma spraying technology column
Make, the technological parameter of coating is, 400~600A of electric current, voltage 40~60V, main gas Ar flow velocity 60~80L/min, secondary gas H2
20~30L/min of flow velocity, 40~60L/min of flow velocity of powder feeding gas, 15~30g/min of speed of powder feeding, coat distance 60
~120mm, spray gun 10~20mm/s of translational speed, coat 60~90 ° of angle；
(8) detect and record coating layer thickness, observe coating surface quality, it is determined that do not come off, after peeling, bulge phenomenon,
It is cooled to after room temperature and removes workpiece, sealing pores are carried out immediately, is brushed twice with epoxy resin is uniform at endoporus, dry 22~
26h, prevents coating adsorbing moisture and influences quality；
(9) honing is carried out to coating, surface is reached the finish and wall thickness of hydraulic support column technical requirements；
(10) rolling of twice is carried out to internal coating, to improve densification and the case hardness of coating.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention passes through plasma spraying technology and rolling techniques
The overcoat of even compact is obtained in column bore area, and with excellent anti-corrosion, anti-wear performance, hydraulic pressure can be effectively improved
The service life of support, and strengthen its reliability.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of coating processes of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of coal mine hydraulic supporting column bore area stainless steel protective coating, by the raw material group of following percetage by weight
Into：Si 1.18%, Ni 1.90%, Cr 31.01%, Mn 0.96%, Mo 1.29%, Fe surplus.
The coating processes of the stainless steel protective coating, coating step is as follows, and flow chart is as shown in Figure 1：
(1) column endoporus original size is determined, diameter of bore is measured and records；
(2) determine that column endoporus needs the one-sided thickness of applying coating, coating number of times is confirmed according to thickness requirement；
(3) column bore area is cleaned using acetone, to remove surface and oil contaminant；
(4) blasting treatment is carried out with 0.4MPa compressed air and the Brown Alundum particle column endoporus of 40~45 mesh, sprayed
Sand angle is vertical 80~90 DEG C of bore area, is then dried up again with compressed air, removes the grains of sand and floating ash of remained on surface；
(5) sand blasted surface is examined, matt color, without glittering metallic luster, the product table after sandblasting is presented in range estimation surface
Face can not directly be contacted with hand, or be spoken against surface, prevent secondary pollution；The column handled well is placed into car to be coated
Between, carrying product needs to use clean mitten, and column to be coated keeps drying and totally；
(6) 60min will be dried by shifting to an earlier date 1h in the drying box for needing 100 DEG C of the powder placement coated, the particle of powder is 300
Mesh, removes the moisture in powder, it is ensured that the mobility that powder has had；
(7) be loaded column workpiece, and equipment is debugged, and is coated behaviour using plasma spraying technology column
Make, the technological parameter of coating is, 400~600A of electric current, voltage 40~60V, main gas Ar flow velocity 60~80L/min, secondary gas H2
20~30L/min of flow velocity, 40~60L/min of flow velocity of powder feeding gas, 15~30g/min of speed of powder feeding, coat distance 60
~120mm, spray gun 10~20mm/s of translational speed, coat 60~90 ° of angle；
(8) detect and record coating layer thickness, observe coating surface quality, it is determined that do not come off, after peeling, bulge phenomenon,
It is cooled to after room temperature and removes workpiece, sealing pores are carried out immediately, is brushed twice with epoxy resin is uniform at endoporus, dry 22~
26h, prevents coating adsorbing moisture and influences quality；
(9) honing is carried out to coating, surface is reached the finish and wall thickness of hydraulic support column technical requirements；
(10) rolling of twice is carried out to internal coating, to improve densification and the case hardness of coating, makes bore area light
Cleanliness and coating layer thickness reach the requirement of hydraulic support assembling.
Internal coating quality is examined
(1) appearance of coat is detected, range estimation coating does not have peeling, bulge, peeling phenomenon；Measurement one-sided thickness meets technology will
Ask；
(2) coating salt water resistance corrosive nature, coating surface is sprayed to 1% sodium-chloride water solution, in atmosphere at room temperature ring
Coating surface is observed in border after 10h, if having point corrosion generation, no point corrosion illustrates that coating quality is qualified, such as
There is point corrosion in fruit, then needs to carry out secondary sealing to coating surface, until reaching decay resistance index request.
The characteristics of hydraulic support column bore area overcoat manufactured using present invention process, is as follows：
(1) it is corrosion-resistant
The material of coating corrosive medium according to present in the working environment of hydraulic support, chooses anti-chlorine ion, sulfuric acid
The material of the corrosion such as radical ion, hydrogen sulfide, can also further be improved in the environment of heavy corrosion using gradient function layer
The decay resistance of coating.
(2) it is wear-resistant
The material of coating in addition to corrosion-resistant requirement is considered, also fully takes into account wanting for column anti-wear performance when choosing
Ask, the case hardness of coating can according to the requirement of use environment and machining, general hardness range between HRC 35-45,
The job requirement of hydraulic support column can be fully met.
(3) adhesion
Coating is high with base material bond strength, up to 35-45MPa, meets the applying working condition of column bore area.
(4) long lifespan
Due to column bore area coating have it is good with the bond strength of base material, corrosion resistant, it is wear-resisting the advantages of, therefore can be effective
Column bore area is protected, increases its service life, when being used cooperatively with excellent sealing part, hydraulic support column can be achieved long
Time service and No leakage.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Claims (2)
1. a kind of coal mine hydraulic supporting column bore area stainless steel protective coating, it is characterised in that by following weight percent
Several raw material compositions：Si 1.15~1.21%, Ni 1.85~1.95%, Cr 30.00~32.02%, Mn 0.90~
1.02%, Mo 1.20~1.38%, Fe surplus.
2. a kind of coating work of coal mine hydraulic supporting column bore area stainless steel protective coating as claimed in claim 1
Skill, it is characterised in that coating step is as follows：
(1) column endoporus original size is determined, diameter of bore is measured and records；
(2) determine that column endoporus needs the one-sided thickness of applying coating, coating number of times is confirmed according to thickness requirement；
(3) column bore area is cleaned using acetone, to remove surface and oil contaminant；
(4) blasting treatment is carried out with 0.3~0.5MPa compressed air and the Brown Alundum particle column endoporus of 40~45 mesh, sprayed
Sand angle is vertical 80~90 DEG C of bore area, is then dried up again with compressed air, removes the grains of sand and floating ash of remained on surface；
(5) sand blasted surface is examined, the column handled well is placed into workshop to be coated；
(6) 50~70min, the particle of powder will be dried in the drying box for needing 95~105 DEG C of the powder placement coated by shifting to an earlier date 1h
For 300 mesh；
(7) be loaded column workpiece, and equipment is debugged, and is coated operation using plasma spraying technology column, is applied
The technological parameter covered is, 400~600A of electric current, voltage 40~60V, main gas Ar flow velocity 60~80L/min, secondary gas H2Flow velocity
20~30L/min, 40~60L/min of flow velocity of powder feeding gas, 15~30g/min of speed of powder feeding, coating distance 60~
120mm, spray gun 10~20mm/s of translational speed, coat 60~90 ° of angle；
(8) detect and record coating layer thickness, observe coating surface quality, it is determined that do not come off, after peeling, bulge phenomenon, cooling
Workpiece is removed after to room temperature, sealing pores are carried out immediately, is brushed twice with epoxy resin is uniform at endoporus, dries 22~26h,
Prevent coating adsorbing moisture and influence quality；
(9) honing is carried out to coating, surface is reached the finish and wall thickness of hydraulic support column technical requirements；
(10) rolling of twice is carried out to internal coating, to improve densification and the case hardness of coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933338.7A CN105483560B (en) | 2015-12-14 | 2015-12-14 | Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933338.7A CN105483560B (en) | 2015-12-14 | 2015-12-14 | Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105483560A CN105483560A (en) | 2016-04-13 |
| CN105483560B true CN105483560B (en) | 2017-08-25 |
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ID=55670825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510933338.7A Expired - Fee Related CN105483560B (en) | 2015-12-14 | 2015-12-14 | Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes |
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| CN113146483B (en) * | 2021-05-28 | 2023-01-17 | 北京北方华创微电子装备有限公司 | Ceramic part manufacturing method and ceramic part |
| CN113400200B (en) * | 2021-07-01 | 2023-03-21 | 大连船用柴油机有限公司 | Rust removal coating process in triangular box of low-speed marine diesel engine frame |
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| CN102619477B (en) * | 2011-01-28 | 2014-03-26 | 中国石油大学(华东) | Wear and corrosion resistant iron-based alloy laser-cladding petroleum drill stem joint |
| JP2012178503A (en) * | 2011-02-28 | 2012-09-13 | Nisshin Steel Co Ltd | Semiconductor carrying electrode material for diode |
| CN202755989U (en) * | 2012-07-19 | 2013-02-27 | 山东塔高矿业机械装备制造有限公司 | Stand column used for hydraulic support |
| PL227405B1 (en) * | 2012-12-19 | 2017-11-30 | SYSTEM Spółka Akcyjna | Method for laser deposition of a metal layer on a metal element |
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| CN105483560A (en) | 2016-04-13 |
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Granted publication date: 20170825 Termination date: 20201214 |