CN108301877A - 一种耐高温汽轮机叶片 - Google Patents
一种耐高温汽轮机叶片 Download PDFInfo
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- CN108301877A CN108301877A CN201710916644.9A CN201710916644A CN108301877A CN 108301877 A CN108301877 A CN 108301877A CN 201710916644 A CN201710916644 A CN 201710916644A CN 108301877 A CN108301877 A CN 108301877A
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- turbine blade
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000001816 cooling Methods 0.000 claims abstract description 73
- 239000000463 material Substances 0.000 claims description 65
- 210000001161 mammalian embryo Anatomy 0.000 claims description 59
- 229910045601 alloy Inorganic materials 0.000 claims description 35
- 239000000956 alloy Substances 0.000 claims description 35
- 238000000465 moulding Methods 0.000 claims description 18
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 238000005242 forging Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 13
- 238000000576 coating method Methods 0.000 claims description 13
- 239000003507 refrigerant Substances 0.000 claims description 11
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 8
- 238000005422 blasting Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052684 Cerium Inorganic materials 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 5
- 239000005955 Ferric phosphate Substances 0.000 claims description 5
- 229910052779 Neodymium Inorganic materials 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052775 Thulium Inorganic materials 0.000 claims description 5
- 239000010425 asbestos Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 5
- 229940032958 ferric phosphate Drugs 0.000 claims description 5
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 5
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 238000005121 nitriding Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- 239000011265 semifinished product Substances 0.000 claims description 5
- 229920002050 silicone resin Polymers 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005496 tempering Methods 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 230000001588 bifunctional effect Effects 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229910052689 Holmium Inorganic materials 0.000 description 3
- 229910052777 Praseodymium Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/18—Hollow blades, i.e. blades with cooling or heating channels or cavities; Heating, heat-insulating or cooling means on blades
- F01D5/185—Liquid cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
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- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
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- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/286—Particular treatment of blades, e.g. to increase durability or resistance against corrosion or erosion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion
- F01D5/288—Protective coatings for blades
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
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- C08K2003/328—Phosphates of heavy metals
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- C08K3/34—Silicon-containing compounds
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
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Abstract
本发明公开了公开了一种耐高温汽轮机叶片,包括叶根、叶型和叶冠,所述叶根、叶型和叶冠依次固定连接,所述叶型的横截面为弧形,所述叶型的内弧面上形成气道,所述叶型靠近叶冠的一端设置有通孔,所述叶型的外凸面上设置有降温装置,所述降温装置包括水管、冷却箱和降温管,所述水管、冷却箱和降温管均设置在叶型的外凸面上,所述通孔通过水管与冷却箱的进水口连接,所述冷却箱的出水口与降温管的进水口连接。本发明通过对液化的高温蒸汽进行降温,然后储存,实现对汽轮机叶片的降温。
Description
技术领域
本发明涉及发电设备技术领域,特别是涉及一种耐高温汽轮机叶片。
背景技术
汽轮机是将蒸汽的能量转换成为机械功的旋转式动力机械,又称为蒸汽透平,主要用作发电用的原动机,也可直接驱动各种泵、风机、压缩机和船舶螺旋桨等,还可以利用汽轮机的排汽或中间抽汽满足生产和生活上的供热需要。
汽轮机的叶片是汽轮发电机组的重要部件。汽轮机叶片的工作环境复杂多变,它在极苛刻的条件下承受高温、高压、巨大的离心力、蒸汽力、蒸汽振荡力、腐蚀及湿蒸汽区水滴冲蚀的共同作用。在高温下金属的汽轮机叶片的机械性会有明显的下降,主要表现为材料的抗拉、抗扭、抗疲劳等性能会下降,然而当叶片长时间处于高温条件下,则会使叶片内部的组织结构产生变化,造成晶间空洞的生产、聚合,产生高温蠕变破坏,从而极大地影响叶片的使用寿命。
发明内容
本发明所要解决的技术问题是,克服现有技术的缺点,提供一种耐高温汽轮机叶片,通过对液化的高温蒸汽进行降温,然后储存,实现对汽轮机叶片的降温。
为了解决以上技术问题,本发明的技术方案如下:
一种耐高温汽轮机叶片,包括叶根、叶型和叶冠,所述叶根、叶型和叶冠依次固定连接,所述叶型的横截面为弧形,所述叶型的内弧面上形成气道,所述叶型靠近叶冠的一端设置有通孔,所述叶型的外凸面上设置有降温装置,所述降温装置包括水管、冷却箱和降温管,所述水管、冷却箱和降温管均设置在叶型的外凸面上,所述通孔通过水管与冷却箱的进水口连接,所述冷却箱的出水口与降温管的进水口连接。
进一步的,所述降温管呈多层S型设置在叶型的外凸面上。
进一步的,所述冷却箱内设置有冷却管和制冷剂,所述冷却管的进水口与冷却箱的进水口连接,所述冷却管的出水口与冷却箱的出水口连接,所述冷却管呈多层S型设置在冷却箱中,所述制冷剂位于冷却管外。
进一步的,所述通孔位于气道上。
进一步的,所述降温管的出水口可拆卸设置有堵头。
进一步的,所述耐高温汽轮机叶片的化学成分的质量百分比为:C:0.22-0.29%、Mn:0.61-0.64%、W:0.36-0.41%、Nb:0.53-0.58%、Si:1.23-1.56%、Cr:0.98-1.26%、Al:2.68-2.96%、Mo:0.34-0.38%、Ti:0.45-0.51%,稀土金属:0.25-0.32%、余量为Fe。
进一步的,所述稀土金属的组份质量百分比为:Pr:17-21%、Nd:21-23%、Ce:8-11%、Y:25-27%、Tm:11-13%,余量为Ho。
本发明还提供了一种耐高温汽轮机叶片的制备方法,包括以下步骤:
S1:将汽轮机叶片的原料按照质量百分比加入到熔炼炉中,将原料熔炼成合金溶液,然后保温10-15分钟;
S2:将合金溶液通过水冷的方式降温至660-650℃形成合金,然后对合金进行热轧,之后冷却形成合金胚料;
S3:用砂轮切割机对合金胚料进行切割,然后将切割好的合金胚料放入锻模中进行锻造,锻造温度保持在765-806℃之间,锻造得到叶片成型胚料;
S4:将叶片成型胚料放入淬火炉中进行淬火,淬火温度为860-900℃,淬火后冷却至280-300℃,将叶片半成品取出,自然冷却至室温,然后放入加热炉中加热至750-770℃,保温15-20分钟,然后取出,放入回火炉中,将回火炉温度调整至455-465℃,保温10-15分钟,然后取出,冷却至室温;
S5:对S4得到的成型胚料表面进行喷砂处理,使胚料表面达到Sa2.5级,然后在成型胚料表面喷涂耐高温涂料,静置30-45分钟;
S6:将S5得到的成型胚料放入气体氮化炉中,向炉内通入NH3,然后将炉温调整至530-535℃,保温15-20小时;
S7:将S6得到的成型胚料进行超声波探伤处理,没有问题则去除胚料的内外尖角及毛刺,随后进行清洁,得到叶片成品。
进一步的,所述S5中耐高温涂料的成分的质量百分比为:滑石粉:3-6%、石棉粉:5-11%、陶瓷土:2-4%、磷酸铁锌:5-8%、复合型双官能团硅烷:2-7%、醋酸丁酯:6-9%、正丁醇10-16%,余量为环氧改性有机硅树脂。
进一步的,所述S5中喷砂处理的原料为钢砂、氧化铝、石英砂中的一种。
本发明的有益效果是:
(1)本发明所述的耐高温汽轮机叶片,在叶型上设置有通孔,当高温蒸汽作用到叶片上时,由于叶片表面温度较低,高温蒸汽会遇冷液化,变成水滴,而叶片高速旋转,水滴受离心力作用向叶冠处移动,从通孔进入水管,经过冷却箱,温度降低后到达降温管,降温管与叶片外凸面接触,可以对叶片进行降温,避免叶片长时间处于高温的工作环境中产生高温蠕变破坏,从而大大延长了叶片的使用寿命;
(2)本发明所述的耐高温汽轮机叶片,降温管呈多层S型设置在叶型的外凸面上,尽可能增大了降温管与叶片的接触面积,加快了热量传递,提高了叶片降温的效果和效率;冷却管也呈多层S型设置在冷却箱中,增加了水在冷却箱的时间,使水达到降温管时水的温度更低,进一步增加了对叶片的降温效果;
(3)本发明所述的耐高温汽轮机叶片,水滴受离心力作用沿着气道向叶冠移动,将通孔设置在气道上,使高温蒸汽液化形成的水更易进入通孔中;在降温管的出水口可拆卸设置有堵头,当汽轮机处于非工作状态时,可以将降温管中的水排出;
(4)本发明所述的耐高温汽轮机叶片,在原料中加入Cr、Si、Al等元素,在熔炼的氧化性气氛中可以很快地生成一层致密的氧化膜,并牢固地附在钢表面,从而有效地提高汽轮机叶片的耐高温性能;加入了Mo、W等元素,属于VⅠB元素,可以增加钢中原子间在高温下的结合力,提高金属键的强度,从而提高了叶片的耐高温性能;还加入稀土元素,由于以上稀土元素的金属原子半径比铁的原子半径大,很容易填补在其晶粒及缺陷中,并生成能阻碍晶粒继续生长的膜,从而使晶粒细化而提高钢的性能,另外,稀土元素与碳、硅等反应形成稀土元素的碳化物、硅化物等,这些化合物硬度高,耐化学腐蚀性好,且熔点高,不仅提高叶片的耐高温性能,还可以提高耐腐蚀性能,从而极大地提高了汽轮机的使用寿命。
(5)本发明所述的耐高温汽轮机叶片,在叶片胚料热处理后进行喷砂处理,使叶片胚料的表面的外表或形状发生变化,由于磨料对叶片胚料表面的冲击和切削作用,使叶片胚料的表面获得一定的清洁度和不同的粗糙度,使胚料表面的机械性能得到改善,提高了叶片的抗疲劳性,同时增加了胚料表面与耐高温涂料之间的附着力,延长了耐高温涂料的耐久性;耐高温涂料则进一步提高了汽轮机叶片的耐高温性能。
附图说明
图1为本发明的结构示意图。
图2为叶型外凸面的结构示意图。
其中:1、叶根;2、叶型;3、叶冠;4、通孔;5、水管;6、冷却箱;7、降温管;8、冷却管;9、制冷剂;10、堵头。
具体实施方式
实施例1
本实施例提供的一种耐高温汽轮机叶片,结构如图1所示,包括叶根1、叶型2和叶冠3,叶根1、叶型2和叶冠3依次固定连接,叶型2的横截面为弧形,叶型2的内弧面上形成气道,叶型2靠近叶冠3的一端设置有通孔4,通孔4位于气道上,叶型2的外凸面上设置有降温装置,降温装置包括水管5、冷却箱6和降温管7,水管5、冷却箱6和降温管7均设置在叶型2的外凸面上,降温管7呈多层S型设置在叶型2的外凸面上,冷却箱6内设置有冷却管8和制冷剂9,冷却管8的进水口与冷却箱6的进水口连接,冷却管8的出水口与冷却箱6的出水口连接,且冷却管8呈多层S型设置在冷却箱6中,制冷剂9位于冷却管8外,通孔4通过水管5与冷却箱6内的冷却管8的进水口连接,冷却管8的出水口与降温管7的进水口连接,降温管7的出水口可拆卸设置有堵头10。
本实施例提供的耐高温汽轮机叶片的化学成分的质量百分比为:C:0.22%、Mn:0.61%、W:0.36%、Nb:0.53%、Si:1.23%、Cr:0.98%、Al:2.68%、Mo:0.34%、Ti:0.45%,Pr:0.0425%、Nd:0.0525%、Ce:0.02%、Y:0.0625%、Tm:0.0275%、Ho:0.045、Fe:92.35%。
本实施例提供的耐高温汽轮机叶片的制备方法,包括以下步骤:
S1:将汽轮机叶片的原料按照质量百分比加入到熔炼炉中,将原料熔炼成合金溶液,然后保温10分钟;
S2:将合金溶液通过水冷的方式降温至660℃形成合金,然后对合金进行热轧,之后冷却形成合金胚料;
S3:用砂轮切割机对合金胚料进行切割,然后将切割好的合金胚料放入锻模中进行锻造,锻造温度保持在765℃之间,锻造得到叶片成型胚料;
S4:将叶片成型胚料放入淬火炉中进行淬火,淬火温度为860℃,淬火后冷却至280℃,将叶片半成品取出,自然冷却至室温,然后放入加热炉中加热至750℃,保温15分钟,然后取出,放入回火炉中,将回火炉温度调整至455℃,保温10分钟,然后取出,冷却至室温;
S5:对S4得到的成型胚料表面进行喷砂处理,喷砂的原料为氧化铝,使胚料表面达到Sa2.5级,然后在成型胚料表面喷涂耐高温涂料,涂料喷涂好后静置30分钟,其中耐高温涂料的成分的质量百分比为:滑石粉:3%、石棉粉:5%、陶瓷土:2%、磷酸铁锌:5%、复合型双官能团硅烷:2%、醋酸丁酯:6%、正丁醇10%、环氧改性有机硅树脂:67%;
S6:将S5得到的成型胚料放入气体氮化炉中,向炉内通入NH3,然后将炉温调整至530℃,保温15小时;
S7:将S6得到的成型胚料进行超声波探伤处理,没有问题则去除胚料的内外尖角及毛刺,随后进行清洁,得到叶片成品一。
实施例2
本实施例提供的一种耐高温汽轮机叶片,结构如图1所示,包括叶根1、叶型2和叶冠3,叶根1、叶型2和叶冠3依次固定连接,叶型2的横截面为弧形,叶型2的内弧面上形成气道,叶型2靠近叶冠3的一端设置有通孔4,通孔4位于气道上,叶型2的外凸面上设置有降温装置,降温装置包括水管5、冷却箱6和降温管7,水管5、冷却箱6和降温管7均设置在叶型2的外凸面上,降温管7呈多层S型设置在叶型2的外凸面上,冷却箱6内设置有冷却管8和制冷剂9,冷却管8的进水口与冷却箱6的进水口连接,冷却管8的出水口与冷却箱6的出水口连接,且冷却管8呈多层S型设置在冷却箱6中,制冷剂9位于冷却管8外,通孔4通过水管5与冷却箱6内的冷却管8的进水口连接,冷却管8的出水口与降温管7的进水口连接,降温管7的出水口可拆卸设置有堵头10。
本实施例提供的耐高温汽轮机叶片的化学成分的质量百分比为:C:0.29%、Mn:0.64%、W:0.41%、Nb:0.58%、Si:1.56%、Cr:1.26%、Al:2.96%、Mo:0.38%、Ti:0.51%、Pr:17-24%、Nd:0.08%、Ce:0.0384%、Y:0.0896%、Tm:0.0448%、Ho:0.016%、Fe:91.09%。
本实施例提供的耐高温汽轮机叶片的制备方法,包括以下步骤:
S1:将汽轮机叶片的原料按照质量百分比加入到熔炼炉中,将原料熔炼成合金溶液,然后保温15分钟;
S2:将合金溶液通过水冷的方式降温至650℃形成合金,然后对合金进行热轧,之后冷却形成合金胚料;
S3:用砂轮切割机对合金胚料进行切割,然后将切割好的合金胚料放入锻模中进行锻造,锻造温度保持在806℃之间,锻造得到叶片成型胚料;
S4:将叶片成型胚料放入淬火炉中进行淬火,淬火温度为900℃,淬火后冷却至300℃,将叶片半成品取出,自然冷却至室温,然后放入加热炉中加热至770℃,保温20分钟,然后取出,放入回火炉中,将回火炉温度调整至465℃,保温15分钟,然后取出,冷却至室温;
S5:对S4得到的成型胚料表面进行喷砂处理,喷砂的原料为氧化铝,使胚料表面达到Sa2.5级,然后在成型胚料表面喷涂耐高温涂料,涂料喷涂好后静置45分钟,其中耐高温涂料的成分的质量百分比为:滑石粉:6%、石棉粉:11%、陶瓷土:4%、磷酸铁锌:8%、复合型双官能团硅烷:7%、醋酸丁酯:9%、正丁醇16%、环氧改性有机硅树脂:39%;
S6:将S5得到的成型胚料放入气体氮化炉中,向炉内通入NH3,然后将炉温调整至535℃,保温20小时;
S7:将S6得到的成型胚料进行超声波探伤处理,没有问题则去除胚料的内外尖角及毛刺,随后进行清洁,得到叶片成品二。
实施例3
本实施例提供的一种耐高温汽轮机叶片,结构如图1所示,包括叶根1、叶型2和叶冠3,叶根1、叶型2和叶冠3依次固定连接,叶型2的横截面为弧形,叶型2的内弧面上形成气道,叶型2靠近叶冠3的一端设置有通孔4,通孔4位于气道上,叶型2的外凸面上设置有降温装置,降温装置包括水管5、冷却箱6和降温管7,水管5、冷却箱6和降温管7均设置在叶型2的外凸面上,降温管7呈多层S型设置在叶型2的外凸面上,冷却箱6内设置有冷却管8和制冷剂9,冷却管8的进水口与冷却箱6的进水口连接,冷却管8的出水口与冷却箱6的出水口连接,且冷却管8呈多层S型设置在冷却箱6中,制冷剂9位于冷却管8外,通孔4通过水管5与冷却箱6内的冷却管8的进水口连接,冷却管8的出水口与降温管7的进水口连接,降温管7的出水口可拆卸设置有堵头10。
本实施例提供的耐高温汽轮机叶片的化学成分的质量百分比为:C:0.26%、Mn:0.63%、W:0.38%、Nb:0.56%、Si:1.39%、Cr:1.18%、Al:2.80%、Mo:0.36%、Ti:0.48%,Pr:0.0532%、Nd:0.0616%、Ce:0.028%、Y:0.0728%、Tm:0.0336%、Ho:0.0308%、Fe:91.68%。
本实施例提供的耐高温汽轮机叶片的制备方法,包括以下步骤:
S1:将汽轮机叶片的原料按照质量百分比加入到熔炼炉中,将原料熔炼成合金溶液,然后保温13分钟;
S2:将合金溶液通过水冷的方式降温至655℃形成合金,然后对合金进行热轧,之后冷却形成合金胚料;
S3:用砂轮切割机对合金胚料进行切割,然后将切割好的合金胚料放入锻模中进行锻造,锻造温度保持在780℃之间,锻造得到叶片成型胚料;
S4:将叶片成型胚料放入淬火炉中进行淬火,淬火温度为880℃,淬火后冷却至290℃,将叶片半成品取出,自然冷却至室温,然后放入加热炉中加热至760℃,保温18分钟,然后取出,放入回火炉中,将回火炉温度调整至460℃,保温13分钟,然后取出,冷却至室温;
S5:对S4得到的成型胚料表面进行喷砂处理,喷砂的原料为氧化铝,使胚料表面达到Sa2.5级,然后在成型胚料表面喷涂耐高温涂料,涂料喷涂好后静置40分钟,其中耐高温涂料的成分的质量百分比为:滑石粉:5%、石棉粉:8%、陶瓷土:3%、磷酸铁锌:7%、复合型双官能团硅烷:5%、醋酸丁酯:8%、正丁醇13%、环氧改性有机硅树脂:51%;
S6:将S5得到的成型胚料放入气体氮化炉中,向炉内通入NH3,然后将炉温调整至533℃,保温17小时;
S7:将S6得到的成型胚料进行超声波探伤处理,没有问题则去除胚料的内外尖角及毛刺,随后进行清洁,得到叶片成品三。
对比例:市售江苏欧美达汽轮机配件有限公司生产的工业汽轮机433动叶片。
将叶片成品一~三和对比例的433动叶片进行对比试验测试,各项性能按国标进行测定,试验条件及其他实验材料均相同,测试结果如表1和表2所示:
表1在常温下进行试验:
表1
由表1可以看出,在常温下本发明制备的汽轮机叶片,与对比例相比,无论是叶片的硬度、抗拉强度,还是断面收缩率,性能都要更为优越。
表2在高温条件下进行试验:
表2
由表2可以看出,当温度升高至300℃和500℃时,对比例的各项数据均有大幅度的降低,而本发明制备的汽轮机叶片,虽然性能均有下降,但是下降的幅度较小。本发明制备的耐高温汽轮机叶片,显著地提高了汽轮机叶片的耐高温性能,同时,还提高了叶片的硬度和抗拉强度等性能,各项机械性能优良,使用寿命更长。
除上述实施例外,本发明还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围。
Claims (10)
1.一种耐高温汽轮机叶片,包括叶根、叶型和叶冠,所述叶根、叶型和叶冠依次固定连接,所述叶型的横截面为弧形,所述叶型的内弧面上形成气道,其特征在于:所述叶型靠近叶冠的一端设置有通孔,所述叶型的外凸面上设置有降温装置,所述降温装置包括水管、冷却箱和降温管,所述水管、冷却箱和降温管均设置在叶型的外凸面上,所述通孔通过水管与冷却箱的进水口连接,所述冷却箱的出水口与降温管的进水口连接。
2.根据权利要求1所述的耐高温汽轮机叶片,其特征在于:所述降温管呈多层S型设置在叶型的外凸面上。
3.根据权利要求1所述的耐高温汽轮机叶片,其特征在于:所述冷却箱内设置有冷却管和制冷剂,所述冷却管的进水口与冷却箱的进水口连接,所述冷却管的出水口与冷却箱的出水口连接,所述冷却管呈多层S型设置在冷却箱中,所述制冷剂位于冷却管外。
4.根据权利要求1所述的耐高温汽轮机叶片,其特征在于:所述通孔位于气道上。
5.根据权利要求1所述的耐高温汽轮机叶片,其特征在于:所述降温管的出水口可拆卸设置有堵头。
6.根据权利要求1所述的耐高温汽轮机叶片,其特征在于:所述耐高温汽轮机叶片的化学成分的质量百分比为:C:0.22-0.29%、Mn:0.61-0.64%、W:0.36-0.41%、Nb:0.53-0.58%、Si:1.23-1.56%、Cr:0.98-1.26%、Al:2.68-2.96%、Mo:0.34-0.38%、Ti:0.45-0.51%,稀土金属:0.25-0.32%、余量为Fe。
7.根据权利要求6所述的耐高温汽轮机叶片,其特征在于:所述稀土金属的组份质量百分比为:Pr:17-21%、Nd:21-23%、Ce:8-11%、Y:25-27%、Tm:11-13%,余量为Ho。
8.一种如权利要求6所述的耐高温汽轮机叶片的制备方法,其特征在于:包括以下步骤:
S1:将汽轮机叶片的原料按照质量百分比加入到熔炼炉中,将原料熔炼成合金溶液,然后保温10-15分钟;
S2:将合金溶液通过水冷的方式降温至660-650℃形成合金,然后对合金进行热轧,之后冷却形成合金胚料;
S3:用砂轮切割机对合金胚料进行切割,然后将切割好的合金胚料放入锻模中进行锻造,锻造温度保持在765-806℃之间,锻造得到叶片成型胚料;
S4:将叶片成型胚料放入淬火炉中进行淬火,淬火温度为860-900℃,淬火后冷却至280-300℃,将叶片半成品取出,自然冷却至室温,然后放入加热炉中加热至750-770℃,保温15-20分钟,然后取出,放入回火炉中,将回火炉温度调整至455-465℃,保温10-15分钟,然后取出,冷却至室温;
S5:对S4得到的成型胚料表面进行喷砂处理,使胚料表面达到Sa2.5级,然后在成型胚料表面喷涂耐高温涂料,静置30-45分钟;
S6:将S5得到的成型胚料放入气体氮化炉中,向炉内通入NH3,然后将炉温调整至530-535℃,保温15-20小时;
S7:将S6得到的成型胚料进行超声波探伤处理,没有问题则去除胚料的内外尖角及毛刺,随后进行清洁,得到叶片成品。
9.根据权利要求8所述的耐高温汽轮机叶片的制备方法,其特征在于:所述S5中耐高温涂料的成分的质量百分比为:滑石粉:3-6%、石棉粉:5-11%、陶瓷土:2-4%、磷酸铁锌:5-8%、复合型双官能团硅烷:2-7%、醋酸丁酯:6-9%、正丁醇10-16%,余量为环氧改性有机硅树脂。
10.根据权利要求8所述的耐高温汽轮机叶片的制备方法,其特征在于:所述S5中喷砂处理的原料为钢砂、氧化铝、石英砂中的一种。
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