JPH10140320A - Production and using method of superheater capillary, bend for equivalent parts - Google Patents
Production and using method of superheater capillary, bend for equivalent partsInfo
- Publication number
- JPH10140320A JPH10140320A JP29815697A JP29815697A JPH10140320A JP H10140320 A JPH10140320 A JP H10140320A JP 29815697 A JP29815697 A JP 29815697A JP 29815697 A JP29815697 A JP 29815697A JP H10140320 A JPH10140320 A JP H10140320A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- curved
- equivalent
- superheater
- producing
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 238000000034 method Methods 0.000 title claims description 22
- 238000005452 bending Methods 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000007751 thermal spraying Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- MRVGWCZKSIQZPS-UHFFFAOYSA-N [Cr].[Ni].[Si].[B] Chemical compound [Cr].[Ni].[Si].[B] MRVGWCZKSIQZPS-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000576 coating method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 10
- 230000004927 fusion Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000010285 flame spraying Methods 0.000 claims description 3
- 238000010289 gas flame spraying Methods 0.000 claims description 3
- 238000007750 plasma spraying Methods 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- DUQYSTURAMVZKS-UHFFFAOYSA-N [Si].[B].[Ni] Chemical compound [Si].[B].[Ni] DUQYSTURAMVZKS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 239000002803 fossil fuel Substances 0.000 claims description 2
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 claims description 2
- 238000003303 reheating Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 229910017052 cobalt Inorganic materials 0.000 claims 1
- 239000010941 cobalt Substances 0.000 claims 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自己流動性を持つ
硬質合金が被覆された、特に大規模な燃焼施設用の湾曲
した過熱器管、曲管、又はこれらと同等の部品の製造方
法に関するものである。本発明は、また、かかる過熱器
管、曲管、又はこれらと同等の機器部品の使用方法に関
するものでもある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing curved superheater tubes, curved tubes or the like, particularly for large-scale combustion facilities, coated with a hard alloy having self-flowability. Things. The invention also relates to the use of such superheater tubes, bent tubes, or equivalent device parts.
【０００２】[0002]
【従来の技術】管、曲管、又はそれらの一部の被膜は、
大規模燃焼施設において広範囲に使用されており、自己
流動性硬質合金の熱溶射により被膜が施された後に、い
わゆる過熱器細管が加熱ボイラにおいて溶接により取付
けられるか、或いは最終的な組立て後に被膜が施され
る。2. Description of the Related Art A tube, a curved tube, or a coating of a part thereof is formed by:
Widely used in large-scale combustion facilities, so-called superheater tubing is attached by welding in a heating boiler after the coating has been applied by thermal spraying of a self-flowing hard alloy, or the coating can be applied after final assembly. Will be applied.
【０００３】[0003]
【発明が解決しようとする課題】腐食および磨耗から守
る為に自己流動性硬質合金の被膜が外面に施されたボイ
ラ製造用の過熱器細管および他の曲がった管の製造は、
極めてコスト高につく為に、それらは腐食、又は磨耗か
ら絶対に守られねばならぬ場所にしか設置されない。こ
の為に、現在では大抵の大規模な燃焼施設において、過
熱器のチューブ及び細管、又は曲管は僅かしか被覆され
ない結果を招いている。これまで、自社内で先ず被膜を
施し、次に曲げることにより、かかる曲管の製造を試み
たが、失敗に終わった。何故ならば合金は、高い硬度と
共融構造を持つからである。従って冷間加工は、僅かな
度合いにとどまらざるを得ず、又、曲げ作業に際して被
膜層が、著しいクラッキングを生じた。The production of superheater tubing and other bent tubes for boiler production, in which a coating of a self-flowing hard alloy is applied on the outer surface to protect against corrosion and wear, comprises:
In order to be very costly, they are only installed where they must be absolutely protected from corrosion or wear. This has resulted in tubes and capillaries or bends of superheaters now being coated little in most large combustion facilities. So far, attempts have been made to manufacture such curved tubes by first applying a coating and then bending them in-house, but this has been unsuccessful. This is because the alloy has a high hardness and a eutectic structure. Therefore, cold working had to be limited to a small degree and the coating layer suffered significant cracking during the bending operation.
【０００４】かかるチューブ部材の使用が、ボイラの製
造の際の他の部位にとっても有利となるように、発明者
は上記チューブ部材が低コストで製造されると同時にそ
の強度と安定性を高めることの出来る方法を提供するこ
とを意図した。[0004] In order for the use of such a tube member to be advantageous to other parts in the manufacture of the boiler, the inventor has sought to increase the strength and stability of the tube member while at the same time producing it at low cost. It was intended to provide a way to
【０００５】[0005]
【課題を解決するための手段】この目的は、独立請求項
の教示により果たされ、他方従属請求項は有利な実施形
態を定める。This object is achieved by the teaching of the independent claims, while the dependent claims define advantageous embodiments.
【０００６】本発明によれば、直線状のチューブ素材
は、熱溶射により0.05から2.0mmの間の層厚で被覆さ
れ、次にこの被膜を融合(fuse)させた後、初めて最終の
形状に曲げられる。この場合に熱溶射により被膜を施
し、次に融合させる為に用いられる自己流動性合金は、
ニッケル−クロム−硼素−シリコンを主成分とするか、
ニッケル−硼素−シリコンを主成分とするか、または硼
素とシリコンが添加されたコバルト−クロムを主成分と
することが望ましい。According to the invention, a straight tube blank is coated by thermal spraying with a layer thickness of between 0.05 and 2.0 mm, and then only after fusing the coating to its final shape. Bendable. In this case, the self-fluid alloy used to apply the coating by thermal spraying and then fuse is:
Nickel-chromium-boron-silicon as a main component,
It is preferable that nickel-boron-silicon is a main component or cobalt-chromium to which boron and silicon are added is a main component.
【０００７】本発明の別の構成によれば、被覆されて曲
げられるチューブ素材の好ましい周壁の肉厚は2.5から8
mm、より好ましくは3.0から6.0mmの場合に、被膜の好ま
しい厚みは0.1から1.5mm、より好ましくは0.3から1.0mm
である。被覆されて曲げられるチューブ素材の直径は、
20から100mm、好ましくは30から70mmである。熱溶射に
より硬質合金で被覆され、その後に融合を施されるチュ
ーブの曲げ半径は、50から2500mm、好ましくは60から15
00mmである。According to another aspect of the invention, the preferred peripheral wall thickness of the coated and bent tube material is 2.5 to 8 mm.
mm, more preferably 3.0 to 6.0 mm, the preferred thickness of the coating is 0.1 to 1.5 mm, more preferably 0.3 to 1.0 mm
It is. The diameter of the tube material that is covered and bent is
It is between 20 and 100 mm, preferably between 30 and 70 mm. The bending radius of the tube coated with the hard alloy by thermal spraying and subsequently fused is 50 to 2500 mm, preferably 60 to 15 mm.
00 mm.
【０００８】本発明によれば、曲げ作業は融合作業の直
後に中間冷却なしに、又は中間冷却後には再加熱の後に
行われる。更に曲げ作業は、400から1000℃、好ましく
は500から900℃の温度範囲で行われる。According to the invention, the bending operation is performed immediately after the fusion operation without intermediate cooling or after the intermediate cooling and after reheating. Further, the bending operation is performed in a temperature range of 400 to 1000 ° C, preferably 500 to 900 ° C.
【０００９】本発明によれば、曲げ作業の前の被覆され
たチューブの加熱は、誘導加熱、火炎加熱、又は通電に
よる加熱により行われ、好ましくはこれに融合熱を加え
て行われる。ガス火炎溶射(autogenous flame spray)、
高速火炎溶射法（HVOF）、プラズマ溶射、又はアークワ
イヤ(arc wire)溶射法は、自己流動性硬質合金を付着す
るのに適している。溶射された自己流動被膜の融合は、
火炎、または誘導コイルにより行うことが出来る。ま
た、溶射された自己流動性硬質合金を電気炉、又はガス
炉の中でチューブ上において融合させることが望ましい
ことも判った。According to the invention, the heating of the coated tube before the bending operation is performed by induction heating, flame heating or heating by energization, preferably by adding fusion heat thereto. Gas flame spraying (autogenous flame spray),
High-speed flame spraying (HVOF), plasma spraying, or arc wire spraying are suitable for depositing self-flowing hard alloys. The fusion of the sprayed self-flowing coating
This can be done with a flame or induction coil. It has also been found desirable to fuse the sprayed self-flowing hard alloy on a tube in an electric or gas furnace.
【００１０】上記の方法で製造された過熱器管、曲管、
又はこれらと同等の部品は、特に化石燃料の燃焼装置、
又は黒液ボイラ施設に適しているが、又この外、廃棄物
焼却装置にも適している。さらに、化学工業、又は火力
発電所における使用にも適している。[0010] The superheater tube, the bent tube manufactured by the above method,
Or equivalent parts, especially fossil fuel combustion equipment,
Or, it is suitable for black liquor boiler facilities, but also suitable for waste incineration equipment. It is also suitable for use in the chemical industry or in thermal power plants.
【００１１】[0011]
【発明の実施の形態】図１の点線で一部を示された直線
状チューブ片１０aは、支持部材としての中心アンビル
１６の両側の放射方向に作用する加圧ラム１４により、
チューブ片１０aの軸心Aからその２つの自由端１２を曲
げられることによって曲管１０に成形される。この場
合、アンビルキャップ２０の湾曲した頂面１８によって
曲率が決まる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A straight tube piece 10a, part of which is shown in dashed lines in FIG. 1, is provided by radially acting pressure rams 14 on both sides of a central anvil 16 as a support member.
The tube 10a is formed into a curved tube 10 by bending its two free ends 12 from the axis A of the tube piece 10a. In this case, the curvature is determined by the curved top surface 18 of the anvil cap 20.
【００１２】図２および図３に於いて、半円形曲管１０
の半径は、R であらわされ、その部分円センターライン
は、Mによりあらわされる。この場合過熱器細管２２で
は半径Rは、例えば60mmであり、過熱器細管２２の２つ
の平行部分の間隔aは120mmであり、チューブの直径d は
約40mmである。In FIG. 2 and FIG.
Is represented by R, and its partial circle centerline is represented by M. In this case, the radius R of the superheater tube 22 is, for example, 60 mm, the distance a between two parallel portions of the superheater tube 22 is 120 mm, and the diameter d of the tube is about 40 mm.
【００１３】黒液ボイラ（図示されていない）において
は、図４の過熱器細管２２aの２つの平行部２４は、直
線状の中間チューブ部２６により接続され、しかもその
長手方向軸Bは直線状の平行部２４の長手方向軸Aに対し
て傾くことにより、２つの鋭角Wを形成する。この場合
にも、チューブ２４，２６は、湾曲した、又は曲がった
中間部１１により接続される。In a black liquor boiler (not shown), the two parallel sections 24 of the superheater tube 22a of FIG. 4 are connected by a straight intermediate tube section 26, and the longitudinal axis B is straight. Are inclined with respect to the longitudinal axis A of the parallel portion 24 to form two acute angles W. Also in this case, the tubes 24, 26 are connected by a curved or bent intermediate section 11.
【００１４】図５の過熱器細管２２bは、U字形の構成で
あり、中間チューブ部２６は、平行部２４に直角に接続
されている。この場合、半径Rが60mmの４分の１円を描
く２つの曲管１０b が接続管の役割を示す。The superheater thin tube 22b in FIG. 5 has a U-shaped configuration, and the intermediate tube portion 26 is connected to the parallel portion 24 at a right angle. In this case, the two curved pipes 10b that draw a quarter circle with a radius R of 60 mm show the role of the connecting pipe.
【００１５】本発明による過熱器細管２２，２２a，２
２b，又は曲管１０，１０b，１１の製造方法は下記の通
りである。破砕されたスチールショットによりクリーニ
ングされ、シリコンカーバイド、又は鋼球が微細噴射さ
れたチューブ１０bは、真直な状態で熱溶射法、例えば
ガス火炎溶射、高速火炎溶射、又はプラズマ溶射により
自己流動性硬質合金が被覆され、続いて付着層３０は、
ガスフレームを用いて炉の中で、又は誘導加熱により融
合する。この融合により、被膜とチューブ素材との密着
度が高められる。The superheater tubes 22, 22a, 2 according to the present invention
The method of manufacturing the 2b or the curved tubes 10, 10b, 11 is as follows. The tube 10b, which has been cleaned by crushed steel shot and finely sprayed with silicon carbide or steel balls, is self-flowing hard alloy in a straight state by a thermal spraying method, for example, gas flame spraying, high-speed flame spraying, or plasma spraying. Is applied, and then the adhesion layer 30 is
Fusing in a furnace with a gas frame or by induction heating. This fusion increases the degree of adhesion between the coating and the tube material.
【００１６】この時、0.05から2.0mm、好ましくは0.1か
ら1.5mm、又は0.3から1.0mmの層厚を持つ融合状態にあ
る自己流動性の硬質合金の被膜は、チューブと共に400
から1000℃、好ましくは500から900℃の温度範囲に維持
されて曲げられる。チューブの外径dは、20から100mm、
好ましくは30から70mmの範囲であり、周壁の肉厚e は2.
5から8.0mm、好ましくは3.0から6.0mmの範囲である。At this time, a self-flowing hard alloy coating in a fused state having a layer thickness of 0.05 to 2.0 mm, preferably 0.1 to 1.5 mm, or 0.3 to 1.0 mm is coated together with the tube by 400 mm.
And maintained at a temperature in the range of from 500 to 900 ° C, preferably from 500 to 900 ° C. The outer diameter d of the tube is 20 to 100 mm,
Preferably, it is in the range of 30 to 70 mm, and the wall thickness e of the peripheral wall is 2.
It is in the range of 5 to 8.0 mm, preferably 3.0 to 6.0 mm.
【００１７】保温又は加熱の為に、加熱ゾーンは低温、
つまり加熱ゾーンの外側に在るチューブ１０に曲げ応力
の生じることのないサイズでなければならない。融合熱
は、曲げ作業用の予備熱(heat potential)として用いる
ことが出来る。多くの場合、チューブ１０は、被覆作業
後に冷却され、その後曲げ作業の為に再び加熱されるこ
とが望ましい。In order to keep heat or heat, the heating zone is at low temperature,
That is, the tube 10 outside the heating zone must have a size that does not cause bending stress. The heat of fusion can be used as heat potential for the bending operation. In many cases, it is desirable that the tube 10 be cooled after the coating operation and then reheated for the bending operation.
【００１８】曲げ半径Rは、50から2000mm、好ましくは6
0から1500mmの間が好ましいことが判った。曲げ半径Rが
200mm以下の場合には、適切な温度を精密に保つことに
特に留意が必要である。The bending radius R is 50 to 2000 mm, preferably 6
It has been found that a range between 0 and 1500 mm is preferred. Bending radius R
In the case of 200 mm or less, special care must be taken to keep the appropriate temperature precisely.
【図１】曲げ装置の中のチューブの側面図である。FIG. 1 is a side view of a tube in a bending device.
【図２】過熱器細管の側面形状を示す側面図である。FIG. 2 is a side view showing a side shape of a superheater thin tube.
【図３】図２の一部の拡大側面線図である。FIG. 3 is an enlarged side view of a part of FIG. 2;
【図４】過熱器細管の側面形状を示す側面図である。FIG. 4 is a side view showing a side shape of the superheater thin tube.
【図５】過熱器細管の側面形状を示す側面図である。FIG. 5 is a side view showing a side shape of the superheater thin tube.
【図６】図５の一部の拡大側面線図である。FIG. 6 is an enlarged side view of a part of FIG. 5;
１０，１０ｂ，１１…曲管、２２，２２ａ，２２ｂ…過
熱器細管、３０…付着層、ｅ…チューブ素材の周壁の肉
厚、ｄ…チューブ素材の直径、Ｒ…チューブの曲げ半
径。10, 10b, 11: curved tube, 22, 22a, 22b: superheater thin tube, 30: adhesion layer, e: wall thickness of peripheral wall of tube material, d: diameter of tube material, R: bending radius of tube.
Claims (24)
た過熱器管、曲管、又はこれらと同等の部品の製造方法
において、 直線状のチューブ素材が熱溶射により0.05から2.0mmの
層厚に被覆され、続いてこの被膜を融合させた後に初め
て最終の形状に曲げられることを特徴とする湾曲した過
熱器管、曲管、又はこれらと同等の部品の製造方法。1. A method for manufacturing a curved superheater tube, a curved tube or a part equivalent thereto coated with a self-flowing hard alloy, wherein a straight tube material is thermally sprayed to a layer thickness of 0.05 to 2.0 mm. A method for producing a curved superheater tube, a curved tube, or a part equivalent thereto, characterized in that the tube is bent into a final shape only after the coating is subsequently fused.
覆が、ニッケル−クロム−硼素−シリコンを主成分とす
る自己流動性合金を用いて行われ、続いて融合されるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。2. The method of claim 1, wherein the thermal spray coating is performed using a self-fluid alloy based on nickel-chromium-boron-silicon and subsequently fused. For manufacturing a superheater tube, a bent tube, or a part equivalent thereto.
覆が、ニッケル−硼素−シリコンを主成分とする自己流
動性合金を用いて行われ、続いて融合されることを特徴
とする湾曲した過熱器管、曲管、又はこれらと同等の部
品の製造方法。3. The method of claim 1, wherein the thermal spray coating is performed using a nickel-boron-silicon-based self-fluid alloy and subsequently fused. A method for manufacturing a vessel tube, a curved tube, or a part equivalent thereto.
覆が、硼素とシリコンが添加されたコバルト−クロムを
主成分とする自己流動性合金を用いて行われ、続いて融
合されることを特徴とする湾曲した過熱器管、曲管、又
はこれらと同等の部品の製造方法。4. The method according to claim 1, wherein the coating by thermal spraying is performed using a self-fluid alloy containing cobalt and chromium as a main component to which boron and silicon are added, followed by fusion. A method for producing a curved superheater tube, a curved tube, or a part equivalent thereto.
被膜が0.1から1.5mm、好ましくは0.3から1.0mmに積層さ
れることを以て特徴とする湾曲した過熱器管、曲管、又
はこれらと同等の部品の製造方法。5. A curved superheater tube, a curved tube, or a combination thereof according to claim 1, wherein the coating is laminated to a thickness of 0.1 to 1.5 mm, preferably 0.3 to 1.0 mm. Manufacturing method for equivalent parts.
されて曲げられるチューブ素材の周壁の肉厚が2.5から8
mm、好ましくは3.0から6.0mmであることを特徴とする湾
曲した過熱器管、曲管、又はこれらと同等の部品の製造
方法。6. The tube material according to claim 1, wherein the thickness of the peripheral wall of the tube material covered and bent is 2.5 to 8 mm.
A method for producing a curved superheater tube, a curved tube or a component equivalent thereto, characterized in that the tube has a diameter of 3.0 mm, preferably 3.0 to 6.0 mm.
されて曲げられるチューブ素材の直径が20から100mm、
好ましくは30から70mmであることを特徴とする湾曲した
過熱器管、曲管、又はこれらと同等の部品の製造方法。7. The tube material according to claim 1, wherein the diameter of the coated tube material is 20 to 100 mm.
A method for manufacturing a curved superheater tube, a curved tube, or an equivalent thereof, which is preferably 30 to 70 mm.
射により硬質合金が被覆され、その後に融合が行われる
チューブの曲げ半径が、50から2500mm、好ましくは60か
ら1500mmの範囲内に設定されることを特徴とする湾曲し
た過熱器管、曲管、又はこれらと同等の部品の製造方
法。8. The bending radius of the tube according to claim 1, wherein the hard alloy is coated by thermal spraying and then the fusion is performed within a range of 50 to 2500 mm, preferably 60 to 1500 mm. A method for producing a curved superheater tube, a curved tube, or a part equivalent thereto, characterized by being performed.
作業が融合作業の後に中間冷却なしに直ちに行われるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。9. A curved superheater tube, a curved tube, or an equivalent thereof according to claim 1, wherein the bending operation is performed immediately after the fusion operation without intermediate cooling. Production method.
作業が中間冷却作業および再加熱の後に行われることを
特徴とする湾曲した過熱器管、曲管、又はこれらと同等
の部品の製造方法。10. A method according to claim 1, wherein the bending operation is performed after an intermediate cooling operation and a reheating operation. .
いて、曲げ作業が400から1000℃、好ましくは500から90
0℃の温度範囲で行われることを特徴とする湾曲した過
熱器管、曲管、又はこれらと同等の部品の製造方法。11. The method according to claim 1, wherein the bending operation is performed at a temperature of 400 to 1000 ° C., preferably 500 to 90 ° C.
A method for producing a curved superheater tube, a curved tube, or a component equivalent thereto, which is performed in a temperature range of 0 ° C.
被覆されたチューブが曲げ作業の前に誘導加熱されるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。12. The method according to claim 1, wherein
A method for producing curved superheater tubes, curved tubes, or equivalent parts, characterized in that the coated tubes are induction heated before the bending operation.
被覆されたチューブが曲げ作業の前に火炎加熱されるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。13. The method according to claim 1, wherein
A method for producing curved superheater tubes, bent tubes, or equivalent, characterized in that the coated tubes are flame-heated before the bending operation.
被覆されたチューブが曲げ作業の前に通電による加熱に
より加熱されることを特徴とする湾曲した過熱器管、曲
管、又はこれらと同等の部品の製造方法。14. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or a component equivalent thereto, wherein the coated tube is heated by heating by electric current before the bending operation.
曲げ作業が融合熱を用いて行われることを特徴とする湾
曲した過熱器管、曲管、又はこれらと同等の部品の製造
方法。15. In any one of claims 1 to 14,
A method for producing a curved superheater tube, a curved tube, or a component equivalent thereto, wherein the bending operation is performed using fusion heat.
自己流動性硬質合金がガス火炎溶射により付着されるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。16. In any one of claims 1 to 15,
A method for producing a curved superheater tube, a curved tube, or an equivalent thereof, wherein a self-flowing hard alloy is applied by gas flame spraying.
自己流動性硬質合金が高速火炎溶射法（HVOF）により付
着されることを特徴とする湾曲した過熱器管、曲管、又
はこれらと同等の部品の製造方法。17. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or an equivalent thereof, wherein a self-flowing hard alloy is applied by high-speed flame spraying (HVOF).
自己流動性硬質合金がプラズマ溶射により付着されるこ
とを特徴とする湾曲した過熱器管、曲管、又はこれらと
同等の部品の製造方法。18. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or an equivalent thereof, wherein a self-flowing hard alloy is applied by plasma spraying.
自己流動性硬質合金がアークワイヤ溶射法により付着さ
れることを特徴とする湾曲した過熱器管、曲管、又はこ
れらと同等の部品の製造方法。19. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or an equivalent thereof, wherein a self-flowing hard alloy is applied by an arc wire spraying method.
溶射された自己流動性硬質合金被膜が火炎により融合す
ることを特徴とする湾曲した過熱器管、曲管、又はこれ
らと同等の部品の製造方法。20. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or a component equivalent thereto, wherein a sprayed self-flowing hard alloy coating is fused by a flame.
溶射された自己流動性硬質合金被膜が誘導コイルにより
融合することを特徴とする湾曲した過熱器管、曲管、又
はこれらと同等の部品の製造方法。21. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or a component equivalent thereto, wherein a sprayed self-flowing hard alloy coating is fused by an induction coil.
溶射された自己流動性硬質合金被膜が電気炉、又はガス
燃焼炉の中で融合することを特徴とする湾曲した過熱器
管、曲管、又はこれらと同等の部品の製造方法。22. The method according to claim 1, wherein
A method for producing a curved superheater tube, a curved tube, or an equivalent thereof, wherein a sprayed self-fluid hard alloy coating is fused in an electric furnace or a gas-fired furnace.
法により製造された過熱器管、曲管、又はこれらと同等
の部品を、化石燃料の燃焼装置、又は黒液ボイラ施設に
使用する使用方法。23. Use of a superheater tube, a bent tube, or an equivalent thereof manufactured by the method according to claim 1 for a fossil fuel combustion device or a black liquor boiler facility. how to use.
法により製造された過熱器管、曲管、又はこれらと同等
の部品を、廃棄物燃焼炉、化学工業、又は火力発電所に
使用する使用方法。24. Use of a superheater tube, a bent tube or an equivalent thereof manufactured by the method according to any one of claims 1 to 22 in a waste combustion furnace, a chemical industry, or a thermal power plant. How to use.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996146086 DE19646086A1 (en) | 1996-11-08 | 1996-11-08 | Process for producing superheater needles, pipe bends or the like and their use |
| DE19646086-7 | 1996-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10140320A true JPH10140320A (en) | 1998-05-26 |
Family
ID=7811028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29815697A Pending JPH10140320A (en) | 1996-11-08 | 1997-10-30 | Production and using method of superheater capillary, bend for equivalent parts |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0841411A1 (en) |
| JP (1) | JPH10140320A (en) |
| DE (1) | DE19646086A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010017861A (en) * | 1999-08-16 | 2001-03-05 | 로버트 에이. 바쎄트 | Chromium boride coatings |
| JP2012207288A (en) * | 2011-03-30 | 2012-10-25 | Dai Ichi High Frequency Co Ltd | Pipe externally coated with self-fluxing alloy and method for manufacturing the same |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59197706A (en) * | 1983-04-26 | 1984-11-09 | 住友金属工業株式会社 | Surface treated steel pipe for boiler tube |
| JPS6141756A (en) * | 1984-07-31 | 1986-02-28 | Fujiki Kosan Kk | Heat and wear resistant fluidized bed boiler tube |
| JP2718734B2 (en) * | 1989-01-13 | 1998-02-25 | トーカロ株式会社 | Steel pipe for boiler which is resistant to sulfidation corrosion and erosion |
| JPH05245543A (en) * | 1992-03-09 | 1993-09-24 | Matsushita Electric Ind Co Ltd | Bending method for plate materials |
-
1996
- 1996-11-08 DE DE1996146086 patent/DE19646086A1/en not_active Withdrawn
-
1997
- 1997-09-19 EP EP97116336A patent/EP0841411A1/en not_active Withdrawn
- 1997-10-30 JP JP29815697A patent/JPH10140320A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010017861A (en) * | 1999-08-16 | 2001-03-05 | 로버트 에이. 바쎄트 | Chromium boride coatings |
| JP2012207288A (en) * | 2011-03-30 | 2012-10-25 | Dai Ichi High Frequency Co Ltd | Pipe externally coated with self-fluxing alloy and method for manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19646086A1 (en) | 1998-05-14 |
| EP0841411A1 (en) | 1998-05-13 |
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