CN102808109B - Method for preparing nickel base alloy wire for coating of sealing surface of stainless steel valve - Google Patents
Method for preparing nickel base alloy wire for coating of sealing surface of stainless steel valve Download PDFInfo
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- CN102808109B CN102808109B CN201210305849.0A CN201210305849A CN102808109B CN 102808109 B CN102808109 B CN 102808109B CN 201210305849 A CN201210305849 A CN 201210305849A CN 102808109 B CN102808109 B CN 102808109B
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 49
- 239000000956 alloy Substances 0.000 title claims abstract description 49
- 238000000576 coating method Methods 0.000 title claims abstract description 20
- 239000011248 coating agent Substances 0.000 title claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title abstract description 26
- 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 9
- 239000000463 material Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 238000005242 forging Methods 0.000 claims abstract description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 9
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 9
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 9
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 239000002344 surface layer Substances 0.000 claims abstract description 6
- 238000009966 trimming Methods 0.000 claims abstract description 6
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 9
- 238000005728 strengthening Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000012467 final product Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000009991 scouring Methods 0.000 abstract 1
- 239000012856 weighed raw material Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 14
- 238000005253 cladding Methods 0.000 description 13
- 239000011159 matrix material Substances 0.000 description 11
- 239000000843 powder Substances 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 5
- 239000000203 mixture Substances 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
- 230000035939 shock Effects 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010309 melting process Methods 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
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000009286 beneficial effect 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
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect 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
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention discloses a method for preparing a nickel base alloy wire for a coating of the sealing surface of a stainless steel valve. The nickel base alloy consists of the following components in percentage by weight: 14.0 to 16.0 percent of Mo, 22.5 to 24.5 percent of Cr, 5.5 to 6.5 percent of W, 1.0 to 1.5 percent of Ti, 0.8 to 1.2 percent of Nb, 0.8 to 1.2 percent of Mn, 0.05 to 0.1 percent of Y, 0.06 to 0.1 percent of Si, less than or equal to 0.005 percent of C, less than or equal to 0.005 percent of S, less than or equal to 0.005 percent of P, and the balance of Ni. The method for preparing the wire comprises the following steps of: 1) smelting weighed raw materials, pouring to obtain metal ingots, cooling, cutting dead heads, trimming and cutting a surface layer; 2) heating the metal ingots which are prepared in the step 1) to 1,160 to 1,180 DEG C, preserving heat for 2 hours, and forging to obtain blank of which the diameter fai is 10 to 12mm, wherein the final forging temperature is 985 DEG C; 3) placing the forged blank on a rotary forging machine and performing hot-swage to obtain the blank of which the diameter fai is 2.4 to 2.6mm, wherein the hot-swage temperature is 1,120 to 1,180 DEG C; and 4) performing scouring, and removing oxide skin from the surface of the material to obtain the nickel base alloy.
Description
Technical field
The present invention relates to alloy field, particularly a kind of preparation method of stainless valve trim coating nickel-base alloy silk material.
Background technology
Stainless steel, because having excellent solidity to corrosion and mechanical property, is widely used in the manufacture of various acidproof valve and high-temperature high pressure valve in petrochemical complex, reactor and Nuclear power plants.Because medium various in operational process has stronger corrodibility even radioactivity, valve sealing face frequently stands friction, extruding and effect of impact in opening-closing process simultaneously, the trim of valve is easy to be destroyed, and greatly shorten the work-ing life of valve, and the seepage of medium may cause stop work and production, environmental pollution even to 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 function and thermal shock resistance and anti-collision performance.
The trim of stainless valve generally adopts the technique of directly carrying out electric arc, flame spurt welding and plasma surfacing high performance alloys layer on valve body to strengthen, alloy raw material used is mainly Fe base, Ni base and Co base self-fluxing alloy powder, these self-fluxing alloy powders are on the basis of matrix element, add Cr, B, Si, C, Mo, elements such as w, the fusing point of powdered alloy is low, self-fluxing nature is good, has the performances such as anti-corrosion, wear-resisting, heat-resisting, anti-oxidant.And the composition of some application scenario to trim strengthening layer has strict requirement, as nuclear valve considers the long-term reliability in valve work-ing life, trim made by normal employing cobalt base alloy, but cobalt can cause secondary emission because of neutron irradiation, and is unfavorable for reactor work; B has very strong neutron absorption capability, easily produces radiation embrittlement and swelling effect.Stellite company develops not containing the Tribaloy T-700 alloy of 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 technique, laser melting and coating technique is by the cladding material of high power laser light fusing synchronous transport, matrix surface skim melts simultaneously, utilizes the cooling effect of matrix self to obtain with matrix in conjunction with good alloy layer at matrix surface.Laser melting coating has following features and advantage compared with above-mentioned Technology: 1. can realize high-precision cladding and deposit, material use efficiency is high; 2. the thickness of cladding layer and width reliably control by 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, 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 completely fine and close, pore-free, has higher hardness and wear and corrosion behavior.
At present for the main powder feeding method adopting preset cobalt-based and Co-based alloy powder of stainless valve trim laser melting coating strengthening.Powder pre-setting method is generally only suitable at material surface cladding layer of material, and the thickness of cladding layer is restricted, and powder, as laid too thick, is difficult to during cladding ensure the metallurgical binding of coating and matrix and good coating performance; Powder pre-setting method is when carrying out the thicker alloy layer of multilayer cladding preparation, and can not ensure the continuity of cladding process, technique is comparatively loaded down with trivial details; Found through experiments, when laser melting coating Tribaloy T-700 alloy, because the toughness of alloy layer is poor, cladding layer very easily ftractures; In addition, containing Co or B in Tribaloy T-700 alloy and above-mentioned cobalt-based and nickel-base alloy, can not meet some nuclear valve door sealing surface strengthening layer can not strict demand containing B and Co.
Publication number is the nickel-base alloy that the 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.Not containing B and Co in described Co-based alloy powder composition.The alloy of this patent application overcomes the defect of prior art to a certain extent, but it mainly focuses on the melting and coating process performance of alloy, and the over-all properties of alloy self is not still very good.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is the preparation method providing a kind of stainless valve trim coating nickel-base alloy silk material, the nickel-base alloy silk material prepared by the method not only has good thermospray or laser melting and coating process performance, the coating adopting it to prepare also has good tensile strength, the corrosion resistance of the mechanical properties such as suitable hardness and excellence, and get togather with matrix metallurgical junction, thermal shock resistance is excellent.
For achieving the above object, the technical solution used in the present invention is as follows:
A preparation method for stainless valve trim coating nickel-base alloy silk material, described 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%, remaining is Ni; The preparation method of described silk material is:
(1) water into ingot metal by after the raw material melting weighed up, after cooling, excise rising head, trimming, cutting surface layer;
(2) ingot metal that step (1) is obtained is heated to 1160-1180 DEG C, insulation 2h, is forged into the blank that diameter is Φ=10-12 (mm) specification, final forging temperature 985 DEG C;
(3) the blank forged, on swager, hot-swage is to Φ=2.4-2.6 (mm), and hot-swage temperature is 1120-1180 DEG C;
(4) pickling, remove material surface oxide skin after and get final product.
The present invention has following beneficial effect:
(1) the present invention is by adjusting composition and the content of alloying element, make each component reach coordination technique effect, wherein, W, Mo are used for putting forward heavy alloyed high-temperature behavior, Cr puies forward heavy alloyed high-temperature oxidation resistance and structure stability, and forms the strengthening phase Ni of small and dispersed with Mo, Ni
2(Mo, Cr), puies forward heavy alloyed mechanical property, Ti, Nb put forward heavy alloyed mechanical behavior under high temperature, Mn, Si keep the processing characteristics that alloy is good, add Y rare earth element and can improve alloy purity, improve alloy crystal boundary structure, play the Microalloying Effect of strengthening crystal boundary.On the basis of lot of experiments, determine the content of above-mentioned each component, make its comprehensive action effect optimum, meet the user demand of stainless valve trim coating.
(2) for designed alloying constituent, devise the technique of forging and hot-swage targetedly, thus the performance that above-mentioned alloy is possessed can fully play out most.
(3) alloy that prepared by the present invention has good tensile strength, the corrosion resistance of the mechanical properties such as suitable hardness and excellence, get togather, and thermal expansivity is low with matrix metallurgical junction, and therefore thermal shock resistance is excellent.
Embodiment
Embodiment one
A preparation method for stainless valve trim coating nickel-base alloy silk material, described nickel-base alloy is made up of following component by weight percentage: Mo 14.0%, Cr 24.5%, W 5.5%, Ti 1.5%, Nb 0.8%, Mn 1.2%, Y 0.05%, Si 0.1%, C≤0.005%, S≤0.005%, P≤0.005%, remaining is Ni; The preparation method of described silk material is:
(1) water into ingot metal by after the raw material melting weighed up, after cooling, excise rising head, trimming, cutting surface layer;
(2) ingot metal that step (1) is obtained is heated to 1160 DEG C, insulation 2h, is forged into the blank that diameter is Φ=12 (mm) specification, final forging temperature 985 DEG C;
(3) the blank forged, on swager, hot-swage is to Φ=2.4 (mm), and hot-swage temperature is 1120-1180 DEG C;
(4) pickling, remove material surface oxide skin after and get final product.
Embodiment two
A preparation method for stainless valve trim coating nickel-base alloy silk material, described nickel-base alloy is made up of following component by weight percentage: Mo 16.0%, Cr 22.5%, W 6.5%, Ti 1.0%, Nb 1.2%, Mn 0.8%, Y 0.1%, Si 0.06%, C≤0.005%, S≤0.005%, P≤0.005%, remaining is Ni; The preparation method of described silk material is:
(1) water into ingot metal by after the raw material melting weighed up, after cooling, excise rising head, trimming, cutting surface layer;
(2) ingot metal that step (1) is obtained is heated to 1180 DEG C, insulation 2h, is forged into the blank that diameter is Φ=10 (mm) specification, final forging temperature 985 DEG C;
(3) the blank forged, on swager, hot-swage is to Φ=2.6 (mm), and hot-swage temperature is 1120-1180 DEG C;
(4) pickling, remove material surface oxide skin after and get final product.
Embodiment three
A preparation method for stainless valve trim coating nickel-base alloy silk material, described nickel-base alloy is made up of following component by weight percentage: Mo 15.0%, Cr 23.5%, W 6.0%, Ti 1.3%, Nb 1.0%, Mn 1.0%, Y 0.07%, Si 0.08%, C≤0.005%, S≤0.005%, P≤0.005%, remaining is Ni; The preparation method of described silk material is:
(1) water into ingot metal by after the raw material melting weighed up, after cooling, excise rising head, trimming, cutting surface layer;
(2) ingot metal that step (1) is obtained is heated to 1170 DEG C, insulation 2h, is forged into the blank that diameter is Φ=11 (mm) specification, final forging temperature 985 DEG C;
(3) the blank forged, on swager, hot-swage is to Φ=2.5 (mm), and hot-swage temperature is 1120-1180 DEG C;
(4) pickling, remove material surface oxide skin after and get final product.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (1)
1. a stainless valve trim coating preparation method for nickel-base alloy silk material, is characterized in that, described nickel-base alloy is made up of following component by weight percentage: Mo 15.5%, Cr 23.0%, W 5.5-6.5%, Ti 1.1%, Nb 1.1%, Mn 0.8-1.2%, Y 0.08%, Si 0.06-0.1%, C≤0.005%, S≤0.005%, P≤0.005%, remaining is Ni; W, Mo are used for putting forward heavy alloyed high-temperature behavior, and Cr puies forward heavy alloyed high-temperature oxidation resistance and structure stability, and form the strengthening phase Ni of small and dispersed with Mo, Ni
2(Mo, Cr), puies forward heavy alloyed mechanical property, Ti, Nb put forward heavy alloyed mechanical behavior under high temperature, Mn, Si keep the processing characteristics that alloy is good, add Y rare earth element and can improve alloy purity, improve alloy crystal boundary structure, play the Microalloying Effect of strengthening crystal boundary; The preparation method of described silk material is:
(1) water into ingot metal by after the raw material melting weighed up, after cooling, excise rising head, trimming, cutting surface layer;
(2) ingot metal that step (1) is obtained is heated to 1160-1180 DEG C, insulation 2h, is forged into the blank that diameter is Φ=10-12 (mm) specification, final forging temperature 985 DEG C;
(3) the blank forged, on swager, hot-swage is to Φ=2.4-2.6 (mm), and hot-swage temperature is 1120-1180 DEG C;
(4) pickling, remove material surface oxide skin after and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305849.0A CN102808109B (en) | 2012-08-24 | 2012-08-24 | Method for preparing nickel base alloy wire for coating of sealing surface of stainless steel valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305849.0A CN102808109B (en) | 2012-08-24 | 2012-08-24 | Method for preparing nickel base alloy wire for coating of sealing surface of stainless steel valve |
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| CN102808109A CN102808109A (en) | 2012-12-05 |
| CN102808109B true CN102808109B (en) | 2015-02-25 |
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| CN201210305849.0A Expired - Fee Related CN102808109B (en) | 2012-08-24 | 2012-08-24 | Method for preparing nickel base alloy wire for coating of sealing surface of stainless steel valve |
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| CN105734234B (en) * | 2016-03-09 | 2017-12-05 | 中国科学院金属研究所 | It is a kind of to improve low activation ferrite/martensite steel elevated temperature strength and the method for antioxygenic property |
| CN112453298B (en) * | 2020-11-03 | 2022-05-24 | 成都先进金属材料产业技术研究院有限公司 | Cold working method of high-temperature alloy rod and wire for fastener |
| CN112589026B (en) * | 2020-12-03 | 2022-05-24 | 成都先进金属材料产业技术研究院有限公司 | Cold machining method of GH4099 high-temperature alloy wire |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065290A1 (en) * | 1999-06-30 | 2001-01-03 | Sumitomo Metal Industries, Ltd. | Heat resistant nickel base alloy |
| CN101260487A (en) * | 2008-04-17 | 2008-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Spray coating material prepared by titanium-containing high-chromium-nickel alloy, preparation method and use thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0639650B2 (en) * | 1986-01-07 | 1994-05-25 | 住友金属工業株式会社 | High corrosion resistance Ni-based alloy with excellent toughness |
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- 2012-08-24 CN CN201210305849.0A patent/CN102808109B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1065290A1 (en) * | 1999-06-30 | 2001-01-03 | Sumitomo Metal Industries, Ltd. | Heat resistant nickel base alloy |
| CN101260487A (en) * | 2008-04-17 | 2008-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Spray coating material prepared by titanium-containing high-chromium-nickel alloy, preparation method and use thereof |
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Effective date of registration: 20160414 Address after: Songjiang District Chedun town Si Lou village of Shanghai city in 201611 Patentee after: Kaist Valve Group Co., Ltd. Address before: Yinzhou District Lianfeng road 315000 Zhejiang city of Ningbo Province, No. 889 Patentee before: Dai Chufa |
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