CN102935740A - Air valve gate plate and manufacture method thereof - Google Patents
Air valve gate plate and manufacture method thereof Download PDFInfo
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- CN102935740A CN102935740A CN2012104544161A CN201210454416A CN102935740A CN 102935740 A CN102935740 A CN 102935740A CN 2012104544161 A CN2012104544161 A CN 2012104544161A CN 201210454416 A CN201210454416 A CN 201210454416A CN 102935740 A CN102935740 A CN 102935740A
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Abstract
The invention discloses an air valve gate plate which comprises a gate plate substrate and is characterized in that a metal ceramic layer is covered on the gate plate substrate. The metal ceramic layer includes by mass 15-20% of chromium, 5-10% of silicon, 30-35% of iron, 5-10% of carbon and 40-44% of nickel. A manufacture method of the air valve gate plate is further disclosed. The method includes coating metal ceramic material powder on the gate plate substrate, wherein the metal ceramic material powder includes by mass 15-20% of chromium, 5-10% of silicon, 30-5% of iron, 5-10% of carbon and 40-44% of nickel. The metal ceramic material powder is combined to form the metal ceramic layer covered on the gate plate substrate. By means of the air valve gate plate and the manufacture method, the air valve gate plate has better abrasion resistance and corrosion resistance.
Description
Technical field
The present invention relates to the natural gas facility technical field, particularly a kind of air valve flashboard and manufacture method thereof.
Background technology
The valve of natural-gas transfer pipeline generally is called air valve, as shown in Figure 1, flashboard 101 in the air valve in use, the destructions such as corrosion of various corrosive gas in wearing and tearing when flashboard 101 need to bear the valve folding towards two working faces of pipeline and the natural gas, its quality not only has material impact to environment, personal security, and production efficiency, economic benefit are had material impact.Flashboard 101 needs good corrosion resistance as the vitals in the natural gas valve, and especially the anti-H 2 S performance requirement is very high.
At present, domestic air valve flashboard product adopts 42 chrome-molybdenum steel (42CrMo) manufacturing usually, perhaps at common metal surface overlaying one deck nickel-base alloy.
But 42CrMo and nickel-base alloy wear-resisting, corrosion resistance is relatively poor: no matter be 42CrMo or Ni base alloy, when the corrosive gas such as hydrogen sulfide in the gas reach a certain amount of, vulnerable area begins corrosion, it is large that fragility becomes, after eroding to a certain degree, easily in switching process because of broken or lose sealing and scrap, service life is shorter.
In addition, in the process of the frequent switch of air valve, existing product surface abrasion performance is also relatively poor, and the coefficient of friction of itself and mating plate is higher, causes the valve switch difficulty, and switch is very difficult especially begin to corrode after, and operation is difficult.
Have again, after the air valve flashboard is scrapped, the air valve flashboard that the especially whole 42CrMo of employing material is made, after the flashboard surface corrosion, if flashboard is scrapped, then surplus material all is wasted, so that existing air valve flashboard cost is very high.
Summary of the invention
The invention provides a kind of air valve flashboard and manufacture method thereof, can make the air valve flashboard have better wear-resisting and decay resistance.
For reaching above-mentioned purpose, technical scheme of the present invention specifically is achieved in that
A kind of air valve flashboard comprises the flashboard matrix, is coated with cermet coating on the described flashboard matrix;
Described cermet coating is remembered with mass percent, comprising:
Chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%.
Preferably, described cermet coating is remembered with mass percent, comprising:
Chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40%.
Preferably, described flashboard matrix material is No. 45 steel.
Preferably, described cermet layer thickness is 1 ~ 1.5 millimeter.
Preferably, described cermet coating covers on two working faces of described flashboard matrix.
A kind of manufacture method of air valve flashboard, the method comprises:
Metallizing ceramic powder on the flashboard matrix;
Wherein, described cermet material powder is remembered with mass percent, comprising:
Chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%;
Described cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating.
Preferably, described cermet coating is remembered with mass percent, comprising:
Chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40%.
Preferably, described described cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating, comprising:
Melt to cover by laser described cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating.
Preferably, described laser melts to cover and comprises:
The wavelength of described laser is 1000 ~ 1060nm; Energy density is 60 ~ 80J/mm2, and the time of irradiation is 4 ~ 6 minutes on described cermet material powder.
Preferably, the granularity of described cermet material powder is 150 ~ 300 orders.
As seen from the above technical solution, this air valve flashboard of the present invention and manufacture method thereof cover anti-wear performance and the higher cermet coating of decay resistance at the flashboard matrix; Wherein, described cermet coating is remembered with mass percent, comprise: chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%, this cermet coating has the hardness height, wearability, the characteristics such as excellent anti-corrosion performance, the Rockwell hardness standard C (HRC) of this cermet coating reaches 67 ~ 70 after measured, and 42CrMo is generally below HRC50, nickel-base antiwear alloy such as Ni-Cr alloy, the Ni-Cr-Mo alloy, the Ni-Cr-Fe alloy, the Ni-Cu alloy, Ni-P and Ni-Cr-P alloy, Ni-Cr-Mo-Fe alloy etc., generally below HRC60, and hardness improves the lifting that has namely brought anti-wear performance, and for corrosive gas, such as the tolerance performance of hydrogen sulfide, also better than 42CrMo and nickel-base alloy.Through using checking, be existing more than 5 times of common product the service life of air valve flashboard of the present invention.
In addition, owing to have cermet coating as the wear resistant corrosion resistant layer, the flashboard matrix need not to use the material of wear resistant corrosion resistant, can use No. 45 comparatively cheap steel makings, compares the air valve flashboard of all being made by 42CrMo, and cost reduces greatly.
Owing to only at two working face covering metal ceramic layers of flashboard matrix, after the working face wearing and tearing, can again cover the layer of metal ceramic material at the working face of flashboard matrix, just can continue to use, greatly saved the cost of raw material.
Have again, melt by laser and to cover the cermet material powder when forming cermet coating and cover on the described flashboard matrix, can make chromium and carbon in the cermet material powder form the hard phase chromium carbide, become the main wear-resisting composition of this cermet material, improve the wear-resisting and decay resistance of material.Iron, nickel are liquid-phase sintering, substantially stop the space between the powder, avoid occurring defective, and form the small amount compound with the flashboard parent metal, the adhesion between raising and the flashboard matrix; Nonmetallic materials composition silicon can improve wetting property and the diffusion velocity of metal material composition, melt by laser and to cover, make cermet material and metal to-metal brake board substrate form metallurgical reaction, very high bond strength is arranged, can form fine and close cermet coating on metal to-metal brake board substrate surface, be difficult for coming off from the flashboard matrix, reduced the flashboard that causes because of coating shedding and scrapped in advance.
Description of drawings
Fig. 1 is the structural representation of existing air valve and air valve flashboard.
Fig. 2 is the air valve flashboard front view of the embodiment of the invention.
Fig. 3 is the air valve flashboard top view of the embodiment of the invention.
Fig. 4 is the air valve flashboard manufacture method flow chart of the embodiment of the invention.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 2 is the air valve flashboard front view of the embodiment of the invention, comprises flashboard matrix 201 and cermet coating 202, and wherein, described cermet coating 202 comprises: chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44% with the mass percent note.
For example, can be chromium 15%, silicon 5%, iron 30%, carbon 10%, nickel 40%;
Or chromium 11%, silicon 5%, iron 35%, carbon 5%, nickel 44%;
Or chromium 20%, silicon 5%, iron 30%, carbon 5%, nickel 40%;
Or chromium 10%, silicon 10%, iron 31%, carbon 5%, nickel 44%;
Wherein, for reaching best wear resistant corrosion resistant, described cermet coating 202 comprises: chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40% with the mass percent note.
Wherein, flashboard matrix 201 can adopt arbitrarily existing flashboard material, for can and cermet coating 202 between combine closely, the flashboard matrix 201 preferred metal materials that adopt, such as iron, copper, tin etc., take into account simultaneously serviceability in order to save cost, described flashboard matrix 201 can adopt steel No. 45, thereby reaches a balance of cost and performance.
In addition, the thickness of described cermet coating 201 can be 1 ~ 1.5 millimeter, and this thickness value is according to the product service life design, and under this thickness, the cost performance of air valve flashboard is higher; If thickness is too thin, when cutting etc.,, grit thick when having such as iron scratched easily; If thickness is too thick, the product manufacture difficulty strengthens, and after 1 millimeter of the product wearing and tearing valve pressure sealing is descended, valve also can be scrapped, this moment, remaining material all can be wasted, so consider that through experiment and life-span 1 ~ 1.5 millimeter is preferred values, if certainly do not consider the factor in cost and service life, the thickness of cermet coating 201 then can arrange arbitrarily.
As shown in Figure 2, taking cost into account, described cermet coating 202 can cover on two working faces of described flashboard matrix 201, namely contacts on the face of air in pipeline, and other non-working surface can not cover, certainly, if further taking cost into account, can also be according to the gas flow in the pipeline, covering metal ceramic layer 202 on the working face that gas directly impacts only, if do not consider cost, also can be at the complete covering metal ceramic layer 202 in flashboard matrix 201 surfaces.
In addition, as a preferred embodiment, also can cover thicker cermet coating 202 at the working face that gas directly impacts, cover thinner cermet coating 202 at another side, the thickness of covering metal ceramic layer 202 on concrete two working faces, can determine that according to actual operating position for example one side is 1.5 millimeters, 0.5 millimeter of another side.The situation design that the thickness of cermet coating 202 all adopts gas directly to impact on certain two working faces is also beneficial, after a surface wear corrosion, two working faces of this air valve flashboard can be exchanged, thereby continue to use, can prolong the service life of air valve flashboard.
Fig. 3 is the air valve flashboard top view of the embodiment of the invention, as shown in Figure 3, comprising:
The through hole 301 that allows gas to pass through on the flashboard is for the jockey 302 that is connected with the flashboard control assembly, the cermet coating 202 that covers on the working face.
Flashboard is connected with flashboard control assembly in the air valve by jockey 302, thereby flashboard can be moved under the control of control assembly, realize the switching of valve, when flashboard moved, when moving to through hole 301 in the pipe diameter, gas can pass through flashboard, realize valve opening, when moving to through hole 301 outside the pipe diameter, gas can not pass through flashboard, realizes valve closes.
Only provided an example of air valve flashboard profile among Fig. 2,3, different according to valve and pipe shape of the profile of air valve flashboard can be made arbitrarily according to different demands in the reality.
The embodiment of the invention also provides a kind of manufacture method of above-mentioned air valve flashboard, and as shown in Figure 4, the method comprises:
Wherein, described cermet material powder is remembered with mass percent, comprising: chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%;
Wherein, in the step 401, each component can be in the cermet material powder:
Chromium 15%, silicon 5%, iron 30%, carbon 10%, nickel 40%;
Or chromium 11%, silicon 5%, iron 35%, carbon 5%, nickel 44%;
Or chromium 20%, silicon 5%, iron 30%, carbon 5%, nickel 40%;
Or chromium 10%, silicon 10%, iron 31%, carbon 5%, nickel 44%;
Better, for reaching best wear resistant corrosion resistant, described cermet material powder is remembered with mass percent, comprising: chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40%.
Wherein, describedly on the flashboard matrix, can adopt arbitrarily existing maturation method in conjunction with the concrete methods of realizing of covering metal ceramic layer; for example: the material powder of cermet coating is coated on the described flashboard matrix; by the protective atmosphere sintering, make the material powder of described cermet coating form cermet coating also in conjunction with covering on the described flashboard matrix.In addition, also can adopt the modes such as built-up welding, spraying, plating and vapour deposition that the material powder of described cermet coating is formed cermet coating also in conjunction with covering on the described flashboard matrix.
Preferably, can adopt laser to melt the method for covering, the material powder that is about to described cermet coating is coated on the described flashboard matrix, melts by laser and covers, and makes the material powder of described cermet coating form cermet coating also in conjunction with covering on the described flashboard matrix.When adopting laser cladding, by the wavelength, energy density of control laser and on the cermet material powder time of irradiation, flashboard matrix top layer and cermet coating are melted simultaneously, and it is extremely low to form dilution factor behind the rapid solidification, become the face coat of metallurgical binding with matrix, thereby significantly improve anti-wear performance and the decay resistance of substrate surface.
Wherein, concrete laser melting and coating process can adopt preset laser cladding and synchronous mode laser melting coating.
Preset laser cladding is the cladding position that cladding material is placed in advance substrate surface, then adopt laser beam irradiation scanning fusing, cladding material can be with the form of powder, silk or plate in advance on the flashboard matrix, and wherein the form ratio with powder is easier to form uniform coating surface.
The synchronous mode laser melting coating then is that cladding material is directly sent in the laser beam, and feed and cladding are finished simultaneously.Cladding material can be sent into the form of powder, also can adopt wire rod or sheet material to carry out synchronous feeding.
Preferably, the granularity of material powder can be 150 ~ 300 orders, the granularity of material powder is controlled at 150 ~ 300 orders, be convenient to the even mixing of raw material powder, that mixes is more even, finally the distribution of the anti-wear performance of the cermet coating of formation, decay resistance is average, reduces the different situation of cermet coating different parts performance.
Wherein laser melts when covering, and laser instrument can use carbon dioxide (CO
2) laser instrument and solid state laser etc.,
The wavelength of the laser that adopts can be 1000 ~ 1060nm; Energy density can be 60 ~ 80J/mm
2, the time of irradiation can be 4 ~ 6 minutes on the cermet material powder.
For example, the wavelength of laser can be 1000nm; Energy density can be 60J/mm
2, the time of irradiation can be 6 minutes on the cermet material powder.
Perhaps the wavelength of laser can be 1060nm; Energy density can be 80J/mm
2, the time of irradiation can be 4 minutes on the cermet material powder.
Perhaps, perhaps the wavelength of laser can be 1030nm; Energy density can be 70J/mm
2, the time of irradiation can be 5 minutes on the cermet material powder.
Melt the mode of covering according to above-mentioned laser, can with the cermet material powder melts and in conjunction with covering on the flashboard matrix, form the cermet coating of the fine and close wear resistant corrosion resistant of combining closely with the flashboard matrix.
In addition, the thickness of the cermet coating of cermet coating material powder formation preferably can be 1 ~ 1.5 millimeter.Reason such as product embodiments repeat no more here.
Melt the mode of covering through above-mentioned laser cermet coating be combined with the flashboard matrix, in conjunction with intensity higher, be not easy to come off, and cermet coating is finer and close, wear-corrosion resistance is better.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (10)
1. an air valve flashboard comprises the flashboard matrix, it is characterized in that, is coated with cermet coating on the described flashboard matrix;
Described cermet coating is remembered with mass percent, comprising:
Chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%.
2. air valve flashboard as claimed in claim 1 is characterized in that, described cermet coating is remembered with mass percent, comprising:
Chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40%.
3. air valve flashboard as claimed in claim 1 is characterized in that, described flashboard matrix material is No. 45 steel.
4. air valve flashboard as claimed in claim 1 is characterized in that, described cermet layer thickness is 1 ~ 1.5 millimeter.
5. air valve flashboard as claimed in claim 1 is characterized in that, described cermet coating covers on two working faces of described flashboard matrix.
6. the manufacture method of an air valve flashboard is characterized in that, the method comprises:
Metallizing ceramic powder on the flashboard matrix;
Wherein, described cermet material powder is remembered with mass percent, comprising:
Chromium 15 ~ 20%, silicon 5 ~ 10%, iron 30 ~ 35%, carbon 5 ~ 10%, nickel 40 ~ 44%;
Described cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating.
7. the manufacture method of air valve flashboard as claimed in claim 6 is characterized in that, described cermet coating is remembered with mass percent, comprising:
Chromium 16%, silicon 6%, iron 30%, carbon 8%, nickel 40%.
8. the manufacture method of air valve flashboard as claimed in claim 6 is characterized in that, described the cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating, comprising:
Melt to cover by laser described cermet material powder is covered on the described flashboard matrix in conjunction with forming cermet coating.
9. the manufacture method of air valve flashboard as claimed in claim 8 is characterized in that, described laser melts to cover and comprises:
The wavelength of described laser is 1000 ~ 1060nm; Energy density is 60 ~ 80J/mm
2, the time of irradiation is 4 ~ 6 minutes on described cermet material powder.
10. the manufacture method of air valve flashboard as claimed in claim 8 is characterized in that, the granularity of described cermet material powder is 150 ~ 300 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210454416.1A CN102935740B (en) | 2012-11-13 | 2012-11-13 | Air valve gate plate and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210454416.1A CN102935740B (en) | 2012-11-13 | 2012-11-13 | Air valve gate plate and manufacture method thereof |
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| CN102935740A true CN102935740A (en) | 2013-02-20 |
| CN102935740B CN102935740B (en) | 2015-03-11 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924237A (en) * | 2014-04-15 | 2014-07-16 | 四川中物泰沃新材料有限公司 | Abrasion-proof cutting ring for concrete pump vehicle and manufacturing method thereof |
| CN103939327A (en) * | 2014-04-15 | 2014-07-23 | 四川中物泰沃新材料有限公司 | Wear plate for concrete pump truck and manufacturing method of wear plate |
| CN103982654A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder and manufacturing method thereof |
| CN103982653A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder plunger and manufacturing method thereof |
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| CN201003625Y (en) * | 2006-12-25 | 2008-01-09 | 广东明珠集团股份有限公司 | High-performance gas flat plate gate valve |
| CN101705410A (en) * | 2009-10-16 | 2010-05-12 | 孙晓冰 | Wear-resistant and thermal corrosion resistant multi-element aluminum-silicon-carbon nitride metal ceramic for laser cladding |
| CN101988195A (en) * | 2010-12-08 | 2011-03-23 | 沈阳大学 | Method for preparing wear-resisting high-temperature resisting oxidation NiCr-Cr3C2 metal ceramic coating |
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| CN2535623Y (en) * | 2002-03-18 | 2003-02-12 | 吴启春 | Hard-sealing slurry gate valve |
| CN1609274A (en) * | 2004-09-16 | 2005-04-27 | 北京科技大学 | Carbonide / iron-base alloy composite coating and its reaction brass coating technology |
| CN201003625Y (en) * | 2006-12-25 | 2008-01-09 | 广东明珠集团股份有限公司 | High-performance gas flat plate gate valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924237A (en) * | 2014-04-15 | 2014-07-16 | 四川中物泰沃新材料有限公司 | Abrasion-proof cutting ring for concrete pump vehicle and manufacturing method thereof |
| CN103939327A (en) * | 2014-04-15 | 2014-07-23 | 四川中物泰沃新材料有限公司 | Wear plate for concrete pump truck and manufacturing method of wear plate |
| CN103982654A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder and manufacturing method thereof |
| CN103982653A (en) * | 2014-05-30 | 2014-08-13 | 四川中物泰沃新材料有限公司 | Anti-corrosion wear-proof hydraulic cylinder plunger and manufacturing method thereof |
| CN103982654B (en) * | 2014-05-30 | 2016-04-20 | 四川中物红宇科技有限公司 | A kind of anticorrosion antiwear hydraulic ram and preparation method thereof |
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