CN102808110A - Nickel-based alloy wire material used for coating layer of sealing surface of stainless steel valve - Google Patents
Nickel-based alloy wire material used for coating layer of sealing surface of stainless steel valve Download PDFInfo
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- CN102808110A CN102808110A CN2012103058560A CN201210305856A CN102808110A CN 102808110 A CN102808110 A CN 102808110A CN 2012103058560 A CN2012103058560 A CN 2012103058560A CN 201210305856 A CN201210305856 A CN 201210305856A CN 102808110 A CN102808110 A CN 102808110A
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- nickel
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- base alloy
- based alloy
- coating
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 60
- 239000000956 alloy Substances 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims abstract description 19
- 229910052759 nickel Inorganic materials 0.000 title abstract description 6
- 238000007789 sealing Methods 0.000 title abstract description 4
- 239000010935 stainless steel Substances 0.000 title abstract description 3
- 229910001220 stainless steel Inorganic materials 0.000 title abstract description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title abstract 7
- 239000011247 coating layer Substances 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 20
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 229910052804 chromium Inorganic materials 0.000 claims description 13
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 229910052758 niobium Inorganic materials 0.000 claims description 11
- 238000000034 method Methods 0.000 description 15
- 238000005253 cladding Methods 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- 229910052721 tungsten Inorganic materials 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 229910052796 boron Inorganic materials 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010309 melting process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910001347 Stellite Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
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- Heat Treatment Of Steel (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses a nickel-based alloy wire material used for a coating layer of a sealing surface of a stainless steel valve. The nickel-based alloy is composed of components according to the percentage by weight as follows: 14.0-16.0% of Mo, 22.5-24.5% of Cr, 5.5-6.5% of W, 1.0-1.5% of Ti, 0.8-1.2% of Nb, 0.8-1.2% of Mn, 0.05-0.1% of Y, 0.06-0.1% of Si, not greater than 0.005% of C, not greater than 0.005% of S, not greater than 0.005% of P and Ni of the balance.
Description
Technical field
The present invention relates to the alloy field, particularly a kind of stainless valve trim coating is with nickel-base alloy silk material.
Background technology
Stainless steel is because of having good solidity to corrosion and mechanical property, is widely used in the manufacturing of various acidproof valves and high-temperature high pressure valve in petrochemical complex, reactor and the Nuclear power plants.Because various media have stronger corrodibility even radioactivity in the operational process; Valve sealing face frequently stands friction, extruding and effect of impact in opening-closing process simultaneously; The trim of valve is easy to destroyed; And shorten work-ing life of valve greatly, and the seepage of medium possibly cause stop work and production, environmental pollution even cause the generation of serious accident.Therefore, the trim of stainless valve not only requires to have good erosion resistance, and has high hardness, anti scuffing ability and thermal shock resistance and anti-collision performance.
The general technology of directly on valve body, carrying out electric arc, flame spurt welding and plasma surfacing high performance alloys layer that adopts of the trim of stainless valve is strengthened; Used alloy raw material is mainly Fe base, Ni base and Co base self-fluxing alloy powder; These self-fluxing alloy powders add Cr, B, Si, C, Mo, elements such as w on the basis of matrix element, the fusing point of powdered alloy is low; Self-fluxing nature is good, has performances such as anti-corrosion, wear-resisting, heat-resisting, anti-oxidant.And there is the requirement of strictness some application scenario to the composition of trim strengthening layer; Consider the valve long-term reliability in work-ing life like nuclear industry with valve; The normal cobalt base alloy that adopts is made trim, but cobalt can cause secondary emission because of neutron irradiation, and is unfavorable for reactor work; B has very strong neutron receptivity, is easy to generate radiation embrittlement and swelling effect.Stellite company develops the Tribaloy T-700 alloy that does not contain B, and its composition is (wt.%): Fe≤3.0, Mo:32.5, Cr:15.5, Si:3.4, Co:1.5, C≤0.08, Ni: surplus.
Similar with existing electric arc, flame spurt welding and plasma surfacing technology; Laser melting and coating technique is through the cladding material of high power laser light fusing synchronous transport; The matrix surface skim melts simultaneously, utilizes the cooling effect of matrix self to obtain and the good alloy layer of matrix bond at matrix surface.Laser melting coating is compared with above-mentioned Technology has following characteristics and advantage: 1. can realize high-precision cladding deposition, material use efficiency is high; 2. the thickness of cladding layer and width can reliably be controlled through the cladding of multilayer multi-track overlapping; 3. concentration of energy, little to the heat input of matrix, the thinning ratio of cladding layer is low, and is little with distortion to the heat affecting of matrix; 4. cladding alloy strengthening layer and matrix are metallurgical binding completely, and bonding strength is high; 5. laser cladding process is a rapid solidification, and the tissue of cladding layer is fine and close fully, pore-free, has higher hardness and wear and corrosion behavior.
Strengthen the main powder feeding method that presets cobalt-based and Co-based alloy powder that adopts to stainless valve trim laser melting coating at present.The powder pre-setting method generally only is adapted at material surface cladding layer of material, and the thickness of cladding layer is restricted, and powder such as shop are put too thick, is difficult to guarantee coating and the metallurgical binding of matrix and good coating performance during cladding; The powder pre-setting method can not guarantee the continuity of cladding process when carrying out the thicker alloy layer of multilayer cladding preparation, technology is comparatively loaded down with trivial details; Find that through experiment when laser melting coating Tribaloy T-700 alloy, because the toughness of alloy layer is relatively poor, cladding layer very easily ftractures; In addition, contain Co or B in Tribaloy T-700 alloy and above-mentioned cobalt-based and the nickel-base alloy, can not satisfy some nuclear industry can not contain B and Co with the valve sealing face strengthening layer strict demand.
Publication number is the nickel-base alloy that the one Chinese patent application of CN101368239A discloses a kind of stainless valve trim alloy layer; The composition of this nickel-base alloy and content are: C:1.0-1.5wt%, Cr:17.5-19.5wt%, Mo:7.0-9.0wt%; W:3.5-4.5wt%; Nb:1.5-2.5wt%, Si:2.0-3.0wt%, Ni: surplus.Do not contain B and Co in the said Co-based alloy powder composition.The alloy of this patented claim has overcome the defective of prior art to a certain extent, but it mainly pays attention to the melting and coating process performance of alloy, and the over-all properties of alloy self still is not very good.
Summary of the invention
Deficiency to prior art; One of the object of the invention is to provide a kind of stainless valve trim coating with nickel-base alloy silk material; Mechanical properties such as this nickel-base alloy silk material not only has thermospray preferably or laser melting and coating process performance, adopts the coating of its preparation also to have tensile strength preferably, suitable hardness and excellent corrosion resistance; And get togather with the matrix metallurgical junction, thermal shock resistance is excellent.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 14.0-16.0%, Cr 22.5-24.5%, W 5.5-6.5%; Ti 1.0-1.5%, Nb 0.8-1.2%, Mn 0.8-1.2%; Y 0.05-0.1%, Si 0.06-0.1%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Preferably, said nickel-base alloy is made up of following component by weight percentage: Mo 14.5-15.5%, Cr 23.0-24.0%, W 5.8-6.2%; Ti 1.2-1.3%, Nb 0.9-1.1%, Mn 0.9-1.1%; Y 0.07-0.08%, Si 0.07-0.09%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Most preferably, said nickel-base alloy is made up of following component by weight percentage: Mo 15.0%, and Cr 23.5%, and W 6.0%, and Ti 1.25%; Nb 1.0%, and Mn 1.0%, and Y 0.075%, and Si 0.08%; C≤0.005%, S≤0.005%, P≤0.005%, surplus is Ni.
The effect of above-mentioned each element and proportioning are according to as follows:
Ni forms the stable austenite tissue, the more alloying element of solid solution as matrix element;
W, Mo help the reduction of the Ni base alloy coefficient of expansion, and improve the high-temperature behavior of alloy;
Cr improves the high-temperature oxidation resistance and the structure stability of alloy, and (Mo Cr), improves the mechanical property of alloy to form the strengthening phase Ni2 of small and dispersed with Mo, Ni;
Ti, Nb improve the mechanical behavior under high temperature of alloy, improve the antioxidant property of alloy simultaneously;
Mn, Si keep the alloy good processing properties;
An amount of interpolation of Y REE can improve alloy purity, improve the alloy crystal boundary structure, plays the microalloying effect of strengthening crystal boundary.
The present invention has following beneficial effect:
(1) the present invention makes each component reach the coordination technique effect through the composition and the content of adjustment alloying element.On the basis of a large amount of tests, confirmed the content of above-mentioned each component, make its comprehensive action effect optimum, satisfy the user demand of stainless valve trim coating.
(2) alloy of the present invention's preparation has tensile strength preferably, and mechanical property and excellent corrosion resistances such as suitable hardness get togather with the matrix metallurgical junction, and thermal expansivity are low, so thermal shock resistance is excellent.
Embodiment
Embodiment one
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 14.0%, and Cr 24.5%, and W 5.5%; Ti 1.5%, and Nb 0.8%, and Mn 1.2%; Y 0.05%, and Si 0.1%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Embodiment two
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 16.0%, and Cr 22.5%, and W 6.5%; Ti 1.0%, and Nb 1.2%, and Mn 0.8%; Y 0.1%, and Si 0.06%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Embodiment three
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 14.5%, and Cr 24.0%, and W 5.8%; Ti 1.3%, and Nb 0.9%, and Mn 1.1%; Y 0.07%, and Si 0.09%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Embodiment four
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 15.5%, and Cr 23.0%, and W 6.2%; Ti 1.2%, and Nb 1.1%, and Mn 0.9%; Y 0.08%, and Si 0.07%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Embodiment five
A kind of stainless valve trim coating is with nickel-base alloy silk material, and said nickel-base alloy is made up of following component by weight percentage: Mo 15.0%, and Cr 23.5%, and W 6.0%; Ti 1.3%, and Nb 1.0%, and Mn 1.0%; Y 0.07%, and Si 0.08%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Applicant's statement; The present invention explains detailed process equipment of the present invention and technical process through the foregoing description; But the present invention is not limited to above-mentioned detailed process equipment and technical process, does not mean that promptly the present invention must rely on above-mentioned detailed process equipment and technical process could be implemented.The person of ordinary skill in the field should understand, and to any improvement of the present invention, to the interpolation of the equivalence replacement of each raw material of product of the present invention and ancillary component, the selection of concrete mode etc., all drops within protection scope of the present invention and the open scope.
Claims (3)
1. a stainless valve trim coating is characterized in that with nickel-base alloy silk material said nickel-base alloy is made up of following component by weight percentage: Mo 14.0-16.0%, Cr 22.5-24.5%; W 5.5-6.5%, Ti 1.0-1.5%, Nb 0.8-1.2%, Mn 0.8-1.2%; Y 0.05-0.1%, Si 0.06-0.1%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
2. a kind of according to claim 1 stainless valve trim coating is characterized in that with nickel-base alloy silk material said nickel-base alloy is made up of following component by weight percentage: Mo 14.5-15.5%, Cr 23.0-24.0%; W 5.8-6.2%, Ti 1.2-1.3%, Nb 0.9-1.1%, Mn 0.9-1.1%; Y 0.07-0.08%, Si 0.07-0.09%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Like the said a kind of stainless valve trim coating of claim 1-2 with nickel-base alloy silk material, it is characterized in that said nickel-base alloy is made up of following component by weight percentage: Mo 15.0%, Cr 23.5%; W 6.0%, and Ti 1.25%, and Nb 1.0%, and Mn 1.0%; Y 0.075%, and Si 0.08%, C≤0.005%; S≤0.005%, P≤0.005%, surplus is Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305856.0A CN102808110B (en) | 2012-08-24 | 2012-08-24 | Nickel-based alloy wire material used for coating layer of sealing surface of stainless steel valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305856.0A CN102808110B (en) | 2012-08-24 | 2012-08-24 | Nickel-based alloy wire material used for coating layer of sealing surface of stainless steel valve |
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| CN102808110A true CN102808110A (en) | 2012-12-05 |
| CN102808110B CN102808110B (en) | 2015-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637552A (en) * | 2015-01-09 | 2015-05-20 | 李泽文 | Reactor claw-link mechanism and manufacturing method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101087894A (en) * | 2004-12-23 | 2007-12-12 | 西门子公司 | A Ni based alloy, a component, a gas turbine arrangement and use of pd in connection with such an alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637552A (en) * | 2015-01-09 | 2015-05-20 | 李泽文 | Reactor claw-link mechanism and manufacturing method thereof |
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| CN102808110B (en) | 2015-05-06 |
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