CN106623431A - Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit - Google Patents

Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit Download PDF

Info

Publication number
CN106623431A
CN106623431A CN201610931804.2A CN201610931804A CN106623431A CN 106623431 A CN106623431 A CN 106623431A CN 201610931804 A CN201610931804 A CN 201610931804A CN 106623431 A CN106623431 A CN 106623431A
Authority
CN
China
Prior art keywords
cooled
steel tube
boiler
temperature
ptfe film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610931804.2A
Other languages
Chinese (zh)
Inventor
王植栋
陶亚平
吴志敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Yin Huan Precision Tube Co Ltd
Original Assignee
Jiangsu Yin Huan Precision Tube Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Yin Huan Precision Tube Co Ltd filed Critical Jiangsu Yin Huan Precision Tube Co Ltd
Priority to CN201610931804.2A priority Critical patent/CN106623431A/en
Publication of CN106623431A publication Critical patent/CN106623431A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • 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
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
    • C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B2045/0227—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

The invention discloses a perforating process for a steel tube for a key boiler of an ultra-supercritical thermal power generating unit. A high-cost hot extrusion process is replaced with the process. The perforating process is easy and convenient to operate, practical and low in cost, and the limitation that a steel tube for a key boiler of an ultra-supercritical thermal power generating unit can only be subjected to hot extrusion can be solved.

Description

A kind of piercing process of ultra supercritical coal-fired unit key steel tube used in boiler
Technical field
The present invention relates to a kind of puncturing technique, and in particular to a kind of advanced ultra supercritical coal-fired unit key boiler steel Piercing process.
Background technology
From the point of view of current China's primary energy structure, China's energy still based on coal, and according to the actual feelings of China Condition, the energy resource structure based on coal will not change within considerable time, therefore improve coal changing into electricity efficiency, development clearly Clean coal power generation technology, and it is the key for realizing target for energy-saving and emission-reduction to build Large Copacity, high parameter extra-supercritical unit, is also me The inevitable choice of state's sustainable development of socio-economy, China has become and possesses the most country of extra-supercritical unit in the world, In order to ensure that China's extra-supercritical unit is built and safe and stable operation, and the development of following extra-supercritical unit, carry out super The development of supercritical unit critical material is very necessary, on the basis of Incoloy 800H, with Al, Nb as alloying Element, develops CHDG-B06, is one of " 12 " National 863 major project problem, and CHDG-B06 steel is higher because of Al content, Conventional piercing process cannot be implemented, and surface is present seriously to be split, and for a long time, such material all adopts relatively costly hot extrusion Technique is manufactured；Therefore, researching and developing a kind of piercing process that can overcome disadvantages described above, to become those skilled in the art urgently to be resolved hurrily Technical problem.
The content of the invention
The technical problem to be solved is, for the shortcoming that above prior art is present, proposes that one kind is super and faces The piercing process of boundary's fired power generating unit key steel tube used in boiler, the piercing process is easy to operate, and practical, low cost can solve to surpass Supercritical thermal power unit key steel tube used in boiler can only hot extrusion limitation.
The present invention solves the technical scheme of above technical problem：
A kind of piercing process of ultra supercritical coal-fired unit key steel tube used in boiler, comprises the following steps：
(i) round steel is carried out into peeling and cut-out；
(ii) the round steel centre drill aperture by step (i) is the through hole of 35-40mm, obtains the pipe that drills；
(iii) by step (ii) gained base pipe be heat-treated, heat treatment temperature be 1110-1140 DEG C, the heat time is 100- 140min, temperature retention time is 15-20min；
(iv) the base pipe after step is (iii) heat-treated enters the steel pipe hollow billet that eleven punch 11 obtains required internal diameter size using perforating head, wears Steel pipe hollow billet is heated into 920-960 DEG C behind hole, room temperature is cooled to；
(v) the steel pipe hollow billet of step (iv) gained is carried out into pickling scale removal with acid solution, pickling temperature is 50-70 DEG C；
(vi) by step (v) gained steel pipe carry out surface passed examination.
So, round steel is first drilled, reduction can be subtracted because the resistance of deformation in perforation procedure causes greatly drastically Temperature rise, it is to avoid hole crack, separately mitigates the resistance of deformation in perforation procedure using rational heat time and temperature retention time.
The of the invention technical scheme for further limiting as：
Further, in the piercing process of aforementioned ultra supercritical coal-fired unit key steel tube used in boiler, step (iv) in, cooling is adopted Water-cooled is combined with air cooling, specially：First adopt water-cooled that base pipe is cooled into 380-450 DEG C with the cooldown rate of 2-4 DEG C/s, Ran Houkong It is cooled to 300-350 DEG C, then adopts water-cooled that base pipe is cooled into 130-180 DEG C with the cooldown rate of 1.8-2.5 DEG C/s, is finally air cooled to Room temperature；
In the piercing process of aforementioned ultra supercritical coal-fired unit key steel tube used in boiler, acid solution is by mass fraction concentration 10-15% The hydrofluoric acid of nitric acid and mass fraction concentration 5-8% is by weight 1：3-1：1 mixing.
In the piercing process of aforementioned ultra supercritical coal-fired unit key steel tube used in boiler, after pickling, steel tube surface is all posted Composite membrane, composite membrane includes PTFE film, and in the one side of PTFE film cross-linked binder glue is scribbled, and is coated with the another side of PTFE film and receives Rice material solution, composite membrane is fitted by cross-linked binder glue with the surface of steel pipe；
The mass percent component of cross-linked binder glue is：4- isocyanatomethyls：25-27%, urethanes：5- 7%, alpha-linolenic acid：6-8%, ethoxylated bisphenol A dimethylacrylates：7-9%, trimethylol-propane trimethacrylate：2- 3%, benzoyl peroxide：3-5%, butyl acrylate：4-6%, Crosslinkable Acrylic Polymer Emulsion：2-3%, 2- hydroxyl -1,2- hexichol Base ethyl ketone：1.7-1.9%, vinylacetate：Surplus；Cross-linked binder glue and PTFE film are carried out into high temperature in the presence of hot pressing to glue Connect compound, hot pressing combined temp is 185-187 DEG C, the time is 1-1.5min, line pressure is 1.5-1.7 Kg/mm；
The mass percent component of nanomaterial solution is：Antimony doped stannum oxide nano-crystal：17-～19%, nano titanium oxide： 9-11%, nanometer silicon carbide：1-3%, pentaerythrite three-(3- '-aziridinos)-propionic ester：15-17%, organic fluorine waterproof agent：It is remaining Amount；The another side on PTFE film surface is sprayed into nanomaterial solution, Jing machineries hot rolling after drying is processed, and drying temperature is 98- 100 DEG C, mechanical hot rolling is roller roll compacting, and line pressure is 2-2.2Kg/mm, and roll compacting temperature is 160-180 DEG C, and the time is 1- 1.5min。
The invention has the beneficial effects as follows：
It is that perforation and tube rolling are prepared that heat treatment in the present invention improves metallicity and interior tissue state, rational heating temperature Degree and temperature retention time improve pipe plasticity, reduce resistance of deformation, improve the tissue of metal, it is to avoid heating is improper to bring increase gold Metal surface is oxidized, and increased the consumption of metal, in addition, heating-up temperature is too high, pipe can be made to produce overheated, burning situation, increases Plus metal consumption, lumber recovery is reduced, it is heat-treated closely bound up with perforation deformation process.
The method that the type of cooling is combined by water-cooled with air cooling, first with cooling velocity water-cooled faster, then carries out air cooling, It is last not only to improve the water erosion resistent ability of hollow billet again by slower cooling by water to room temperature, and tissue can be made more It is uniform and stable, seldom there is pore and trachoma, it is ensured that the corrosion resistance of hollow billet, serve unexpected technique effect.
The present invention is drilled using round steel, reduces the drastically temperature rise caused greatly due to the resistance of deformation in perforation procedure, it is to avoid Hole crack, the resistance of deformation in perforation procedure is mitigated using rational heat time and temperature retention time.
The present invention also posts composite membrane in steel tube surface, and the composite membrane includes PTFE film, and the PTFE film is to adopt polytetrafluoro Ethene dispersion resin Jing techniques into film, the micropore size having into pore property, its surface of polytetrafluoroethylplastic plastic resin Very little, vapor can by and water droplet can not pass through, therefore with good Waterproof Breathable function, in addition the hole it is extremely tiny and The substandard bend alignment in longitudinal direction, prevents wind from passing through, so as to have good windproof and warming anti-icing effect, while it also has There is certain preservative efficacy；For the nanomaterial solution on composite membrane, its size distribution has with good weatherability, resistance to Chemical corrosivity, ultraviolet-resistent property is strong, and the cross-linked binder glue cementability is strong so that composite membrane is firmly bonded in the surface of steel pipe not It is easy to fall off.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of piercing process of ultra supercritical coal-fired unit key steel tube used in boiler, comprises the following steps：
(i) round steel is carried out into peeling and cut-out；
(ii) the round steel centre drill aperture by step (i) is the through hole of 35mm, obtains the pipe that drills；
(iii) by step (ii) gained base pipe be heat-treated, heat treatment temperature be 1110 DEG C, the heat time is 100min, during insulation Between be 15min；
(iv) the base pipe after step is (iii) heat-treated enters the steel pipe hollow billet that eleven punch 11 obtains required internal diameter size using perforating head, wears Steel pipe hollow billet is heated into 925 DEG C behind hole, room temperature is cooled to；
Cooling is combined using water-cooled with air cooling, specially：First adopt water-cooled that base pipe is cooled into 380 DEG C with the cooldown rate of 2 DEG C/s, Then 300 DEG C are air cooled to, then adopt water-cooled that base pipe is cooled into 130 DEG C with the cooldown rate of 1.8 DEG C/s, be finally air cooled to room temperature；
(v) the steel pipe hollow billet of step (iv) gained is carried out into pickling scale removal with acid solution, pickling temperature is 50-70 DEG C；Acid solution by The nitric acid of mass fraction concentration 10% and the hydrofluoric acid of mass fraction concentration 5-8% are by weight 1：3 mixing；
(vi) by step (v) gained steel pipe carry out surface passed examination.
Embodiment 2
The present embodiment provides a kind of piercing process of ultra supercritical coal-fired unit key steel tube used in boiler, comprises the following steps：
(i) round steel is carried out into peeling and cut-out；
(ii) the round steel centre drill aperture by step (i) is the through hole of 40mm, obtains the pipe that drills；
(iii) by step (ii) gained base pipe be heat-treated, heat treatment temperature be 1140 DEG C, the heat time is 120min, during insulation Between be 18min；
(iv) the base pipe after step is (iii) heat-treated enters the steel pipe hollow billet that eleven punch 11 obtains required internal diameter size using perforating head, wears Steel pipe hollow billet is heated into 940 DEG C behind hole, room temperature is cooled to；
Cooling is combined using water-cooled with air cooling, specially：First adopt water-cooled that base pipe is cooled into 450 DEG C with the cooldown rate of 4 DEG C/s, Then 350 DEG C are air cooled to, then adopt water-cooled that base pipe is cooled into 180 DEG C with the cooldown rate of 2.5 DEG C/s, be finally air cooled to room temperature；
(v) the steel pipe hollow billet of step (iv) gained is carried out into pickling scale removal with acid solution, pickling temperature is 70 DEG C；Acid solution is by matter The nitric acid of amount fraction concentration 15% and the hydrofluoric acid of mass fraction concentration 8% are by weight 1：1 mixing；
(vi) by step (v) gained steel pipe carry out surface passed examination.
Embodiment 3
The present embodiment provides a kind of piercing process of ultra supercritical coal-fired unit key steel tube used in boiler, comprises the following steps：
(i) round steel is carried out into peeling and cut-out；
(ii) the round steel centre drill aperture by step (i) is the through hole of 38mm, obtains the pipe that drills；
(iii) by step (ii) gained base pipe be heat-treated, heat treatment temperature be 1130 DEG C, the heat time is 140min, during insulation Between be 20min；
(iv) the base pipe after step is (iii) heat-treated enters the steel pipe hollow billet that eleven punch 11 obtains required internal diameter size using perforating head, wears Steel pipe hollow billet is heated into 950 DEG C behind hole, room temperature is cooled to；
Cooling is combined using water-cooled with air cooling, specially：First adopt water-cooled that base pipe is cooled into 400 DEG C with the cooldown rate of 3 DEG C/s, Then 320 DEG C are air cooled to, then adopt water-cooled that base pipe is cooled into 150 DEG C with the cooldown rate of 2 DEG C/s, be finally air cooled to room temperature；
(v) the steel pipe hollow billet of step (iv) gained is carried out into pickling scale removal with acid solution, pickling temperature is 60 DEG C；Acid solution is by matter The nitric acid of amount fraction concentration 12% and the hydrofluoric acid of mass fraction concentration 6% are by weight 1：2 mixing；
(vi) by step (v) gained steel pipe carry out surface passed examination.
Embodiment 4
The present embodiment is with the difference of embodiment 1-3, and after pickling, steel tube surface all posts composite membrane, and composite membrane includes PTFE film, in the one side of PTFE film cross-linked binder glue is scribbled, and in the another side of PTFE film nanomaterial solution, composite membrane are coated with Fitted with the surface of steel pipe by cross-linked binder glue；
The mass percent component of cross-linked binder glue is：4- isocyanatomethyls：26%, urethanes：6%, α- Leukotrienes：7%, ethoxylated bisphenol A dimethylacrylates：8%, trimethylol-propane trimethacrylate：2.5%, peroxidating Benzoyl：4%, butyl acrylate：5%, Crosslinkable Acrylic Polymer Emulsion：2%, 2- hydroxyl -1,2- diphenylethans：1.8%, acetic acid Vinyl acetate：Surplus；Cross-linked binder glue and PTFE film are carried out into high temperature bonding in the presence of hot pressing to be combined, hot pressing combined temp is 186 DEG C, the time is 1.3min, and line pressure is 1.6 Kg/mm；
The mass percent component of nanomaterial solution is：Antimony doped stannum oxide nano-crystal：18%, nano titanium oxide：10%, receive Rice carborundum：2%, pentaerythrite three-(3- '-aziridinos)-propionic ester：16%, organic fluorine waterproof agent：Surplus；By PTFE film surface Another side spraying nanomaterial solution, after drying Jing machinery hot rolling process, drying temperature be 99 DEG C, mechanical hot rolling be roller Cylinder roll compacting, line pressure is 2.1Kg/mm, and roll compacting temperature is 170 DEG C, and the time is 1.2min.
Embodiment 5
The present embodiment is with the difference of embodiment 1-3, and after pickling, steel tube surface all posts composite membrane, and composite membrane includes PTFE film, in the one side of PTFE film cross-linked binder glue is scribbled, and in the another side of PTFE film nanomaterial solution, composite membrane are coated with Fitted with the surface of steel pipe by cross-linked binder glue；
The mass percent component of cross-linked binder glue is：4- isocyanatomethyls：27%, urethanes：7%, α- Leukotrienes：8%, ethoxylated bisphenol A dimethylacrylates：9%, trimethylol-propane trimethacrylate：3%, benzoyl peroxide Formyl：5%, butyl acrylate：6%, Crosslinkable Acrylic Polymer Emulsion：3%, 2- hydroxyl -1,2- diphenylethans：1.9%, acetic acid second Alkene ester：Surplus；Cross-linked binder glue and PTFE film are carried out into high temperature bonding in the presence of hot pressing to be combined, hot pressing combined temp is 187 DEG C, the time is 1.5min, and line pressure is 1.7 Kg/mm；
The mass percent component of nanomaterial solution is：Antimony doped stannum oxide nano-crystal：19%, nano titanium oxide：11%, receive Rice carborundum：3%, pentaerythrite three-(3- '-aziridinos)-propionic ester：17%, organic fluorine waterproof agent：Surplus；By PTFE film surface Another side spraying nanomaterial solution, Jing machineries hot rolling after drying processes, and drying temperature is 100 DEG C, and mechanical hot rolling is Roller roll compacting, line pressure is 2.2Kg/mm, and roll compacting temperature is 180 DEG C, and the time is 1.5min.
Embodiment 6
The present embodiment is with the difference of embodiment 1-3, and after pickling, steel tube surface all posts composite membrane, and composite membrane includes PTFE film, in the one side of PTFE film cross-linked binder glue is scribbled, and in the another side of PTFE film nanomaterial solution, composite membrane are coated with Fitted with the surface of steel pipe by cross-linked binder glue；
The mass percent component of cross-linked binder glue is：4- isocyanatomethyls：25%, urethanes：5%, α- Leukotrienes：6%, ethoxylated bisphenol A dimethylacrylates：7%, trimethylol-propane trimethacrylate：2%, benzoyl peroxide Formyl：3%, butyl acrylate：4%, Crosslinkable Acrylic Polymer Emulsion：2%, 2- hydroxyl -1,2- diphenylethans：1.7%, acetic acid second Alkene ester：Surplus；Cross-linked binder glue and PTFE film are carried out into high temperature bonding in the presence of hot pressing to be combined, hot pressing combined temp is 185 DEG C, the time is 1min, and line pressure is 1.5Kg/mm；
The mass percent component of nanomaterial solution is：Antimony doped stannum oxide nano-crystal：17%, nano titanium oxide：9%, receive Rice carborundum：1%, pentaerythrite three-(3- '-aziridinos)-propionic ester：15%, organic fluorine waterproof agent：Surplus；By PTFE film surface Another side spraying nanomaterial solution, after drying Jing machinery hot rolling process, drying temperature be 98 DEG C, mechanical hot rolling be roller Cylinder roll compacting, line pressure is 2Kg/mm, and roll compacting temperature is 160 DEG C, and the time is 1min.
Surface quality is good after the ultra supercritical coal-fired unit key steel tube used in boiler perforation of this example, reaches steel pipe manufacture Requirement.
In addition to the implementation, the present invention can also have other embodiment.All employing equivalents or equivalent transformation shape Into technical scheme, all fall within the protection domain of application claims.

Claims (4)

1. the piercing process of a kind of ultra supercritical coal-fired unit key steel tube used in boiler, it is characterised in that comprise the following steps：
(i) round steel is carried out into peeling and cut-out；
(ii) the round steel centre drill aperture by step (i) is the through hole of 35-40mm, obtains the pipe that drills；
(iii) by step (ii) gained base pipe be heat-treated, heat treatment temperature be 1110-1140 DEG C, the heat time is 100- 140min, temperature retention time is 15-20min；
(iv) the base pipe after step is (iii) heat-treated enters the steel pipe hollow billet that eleven punch 11 obtains required internal diameter size using perforating head, wears Steel pipe hollow billet is heated into 920-960 DEG C behind hole, room temperature is cooled to；
(v) the steel pipe hollow billet of step (iv) gained is carried out into pickling scale removal with acid solution, pickling temperature is 50-70 DEG C；
(vi) by step (v) gained steel pipe carry out surface passed examination.
2. the piercing process of ultra supercritical coal-fired unit according to claim 1 key steel tube used in boiler, it is characterised in that The step (iv) in, cooling combined with air cooling using water-cooled, specially：Water-cooled is first adopted with the cooldown rate of 2-4 DEG C/s by base Pipe is cooled to 380-450 DEG C, is then air cooled to 300-350 DEG C, then adopts water-cooled with the cooldown rate of 1.8-2.5 DEG C/s by base Guan Leng To 130-180 DEG C, room temperature is finally air cooled to.
3. the piercing process of ultra supercritical coal-fired unit according to claim 1 and 2 key steel tube used in boiler, its feature exists In the acid solution is by the nitric acid of mass fraction concentration 10-15% and the hydrofluoric acid of mass fraction concentration 5-8% by weight 1：3-1： 1 mixing.
4. the piercing process of ultra supercritical coal-fired unit according to claim 1 and 2 key steel tube used in boiler, its feature exists In after the pickling, steel tube surface all posts composite membrane, and the composite membrane includes PTFE film, applies in the one side of the PTFE film Crosslinking adhesive glue, in the another side of the PTFE film nanomaterial solution is coated with, and the composite membrane is viscous by the crosslinking Gum deposit is fitted with the surface of the steel pipe；
The mass percent component of the cross-linked binder glue is：4- isocyanatomethyls：25-27%, urethane Ester：5-7%, alpha-linolenic acid：6-8%, ethoxylated bisphenol A dimethylacrylates：7-9%, trimethylol propane trimethyl acrylic acid Ester：2-3%, benzoyl peroxide：3-5%, butyl acrylate：4-6%, Crosslinkable Acrylic Polymer Emulsion：2-3%, 2- hydroxyl -1,2- Diphenylethan：1.7-1.9%, vinylacetate：Surplus；Cross-linked binder glue and PTFE film are carried out into height in the presence of hot pressing Warm bonding is combined, and the hot pressing combined temp is 185-187 DEG C, and the time is 1-1.5min, and line pressure is 1.5-1.7 Kg/mm；
The mass percent component of the nanomaterial solution is：Antimony doped stannum oxide nano-crystal：17-～19%, nanometer titanium dioxide Titanium：9-11%, nanometer silicon carbide：1-3%, pentaerythrite three-(3- '-aziridinos)-propionic ester：15-17%, organic fluorine waterproof agent： Surplus；The another side on PTFE film surface is sprayed into nanomaterial solution, Jing machineries hot rolling after drying is processed, the drying temperature For 98-100 DEG C, mechanical hot rolling is roller roll compacting, and line pressure is 2-2.2Kg/mm, and roll compacting temperature is 160-180 DEG C, and the time is 1-1.5min。
CN201610931804.2A 2016-10-25 2016-10-25 Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit Pending CN106623431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610931804.2A CN106623431A (en) 2016-10-25 2016-10-25 Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610931804.2A CN106623431A (en) 2016-10-25 2016-10-25 Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit

Publications (1)

Publication Number Publication Date
CN106623431A true CN106623431A (en) 2017-05-10

Family

ID=58821890

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610931804.2A Pending CN106623431A (en) 2016-10-25 2016-10-25 Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit

Country Status (1)

Country Link
CN (1) CN106623431A (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416134A (en) * 1981-02-17 1983-11-22 Sumitomo Kinzoku Kogyo Kabushiki Kaisha Process for manufacturing seamless metal tubes
US5746465A (en) * 1995-10-23 1998-05-05 Mobility Plus, Inc. Method and apparatus for moving a physically disabled person to and from a driving position within a vehicle
CN101633999A (en) * 2009-05-26 2010-01-27 山西太钢不锈钢股份有限公司 Austenitic stainless steel, steel tube thereof and manufacturing method thereof
CN101829703A (en) * 2010-05-17 2010-09-15 彭敦林 Martensitic gapless stainless steel tube and manufacturing method thereof
CN102274854A (en) * 2011-08-13 2011-12-14 四川三洲特种钢管有限公司 Process for manufacturing superascoloy stainless steel tube
CN103122439A (en) * 2013-02-18 2013-05-29 无锡鑫常钢管有限责任公司 Stainless steel tube applied to high-parameter ultra-supercritical thermal power generating unit and manufacturing process thereof
CN103820909A (en) * 2014-02-18 2014-05-28 南京邮电大学 Conductive yarn and production method thereof
CN104043672A (en) * 2014-04-10 2014-09-17 内蒙古北方重工业集团有限公司 Manufacturing method of high-quality P92 large-aperture thick-wall seamless steel pipe of ultra-supercritical unit
CN104325262A (en) * 2014-10-16 2015-02-04 海盐三鑫钢管有限公司 Processing method for small-pipe-diameter thick-wall pipe used for automobile shock absorber
CN104942004A (en) * 2015-05-18 2015-09-30 攀钢集团成都钢钒有限公司 Method for producing seamless steel tube used for ultra-supercritical generator set
CN105647328A (en) * 2016-02-02 2016-06-08 芜湖县双宝建材有限公司 Weather-proof high-strength and high-adhesive-force paint

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4416134A (en) * 1981-02-17 1983-11-22 Sumitomo Kinzoku Kogyo Kabushiki Kaisha Process for manufacturing seamless metal tubes
US5746465A (en) * 1995-10-23 1998-05-05 Mobility Plus, Inc. Method and apparatus for moving a physically disabled person to and from a driving position within a vehicle
CN101633999A (en) * 2009-05-26 2010-01-27 山西太钢不锈钢股份有限公司 Austenitic stainless steel, steel tube thereof and manufacturing method thereof
CN101829703A (en) * 2010-05-17 2010-09-15 彭敦林 Martensitic gapless stainless steel tube and manufacturing method thereof
CN102274854A (en) * 2011-08-13 2011-12-14 四川三洲特种钢管有限公司 Process for manufacturing superascoloy stainless steel tube
CN103122439A (en) * 2013-02-18 2013-05-29 无锡鑫常钢管有限责任公司 Stainless steel tube applied to high-parameter ultra-supercritical thermal power generating unit and manufacturing process thereof
CN103820909A (en) * 2014-02-18 2014-05-28 南京邮电大学 Conductive yarn and production method thereof
CN104043672A (en) * 2014-04-10 2014-09-17 内蒙古北方重工业集团有限公司 Manufacturing method of high-quality P92 large-aperture thick-wall seamless steel pipe of ultra-supercritical unit
CN104325262A (en) * 2014-10-16 2015-02-04 海盐三鑫钢管有限公司 Processing method for small-pipe-diameter thick-wall pipe used for automobile shock absorber
CN104942004A (en) * 2015-05-18 2015-09-30 攀钢集团成都钢钒有限公司 Method for producing seamless steel tube used for ultra-supercritical generator set
CN105647328A (en) * 2016-02-02 2016-06-08 芜湖县双宝建材有限公司 Weather-proof high-strength and high-adhesive-force paint

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
中国建筑标准设计研究院编: "《全国民用建筑工程设计技术措施》", 31 December 2009, 北京：中国计划出版社 *

Similar Documents

Publication Publication Date Title
CN107649682A (en) The method of ultrasonic impact and sensing heating refining laser increasing material manufacturing titanium alloy crystal grain
WO2008064257A3 (en) Method for brazing and hot forming a multichannel heat exchanger, the hot forming using the heating energy of the brazing step
CN103341583B (en) The forging method of super two-phase stainless steel large-sized tube sheet forging
CN103643025B (en) Method of improving toughness of novel martensite heat-resistant steel A355P91 welding seam
WO2017083598A3 (en) Phase change and/or reactive materials for energy storage/release, including in solar enhanced material recovery, and associated systems and methods
CN109881196B (en) Main steam pipeline with inner wall anti-oxidation coating and preparation method thereof
CN105198501A (en) Preparation method of carbon/carbon composite material surface metal tungsten gradient coating
CN106623431A (en) Perforating process for steel tube for key boiler of ultra-supercritical thermal power generating unit
CN107400928A (en) A kind of simple and easy method of direct growth carbon nano pipe array on metal and application
CN113024265A (en) Soft felt with surface treatment and manufacturing method thereof
CN105598211B (en) A kind of heat flattening method of high-specific gravity tungsten alloy light sheet
CN205893351U (en) Cable annealing device
CN103084321A (en) Preparation process for nanometer perfluorocarbon composite coating
CN105841127B (en) A kind of device and method for lifting steam quality
CN107013900A (en) It is a kind of with the boiler air preheating device and its pre-heating mean that condensate is medium
CN107151345A (en) A kind of transparent heat-insulated PC sunlight boards and preparation method thereof
CN207121628U (en) The cable annealing device that a kind of heat energy efficiently utilizes
CN102205375B (en) Method for pressing press pipe joint of steel inhaul cable
CN205454127U (en) Integral ceramic PTC electric heater of high performance
CN201682647U (en) Induction heater and induction heat treatment equipment
CN101239420A (en) Soldering method of composite foil for carbon/silicon carbide and niobium or niobium alloy
CN107763977A (en) A kind of China fir drying means
CN104744973B (en) A kind of effective high radiation ceramic coating of heating-furnace and its preparation, application method
CN105120536A (en) Preparation method of nano material heating element
CN108250821B (en) Graphene dispersion method for graphene-based anticorrosive paint

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170510