JPS63158159A - Method and apparatus for preparing resin powder fused and coated steel sheet pile - Google Patents
Method and apparatus for preparing resin powder fused and coated steel sheet pileInfo
- Publication number
- JPS63158159A JPS63158159A JP30529686A JP30529686A JPS63158159A JP S63158159 A JPS63158159 A JP S63158159A JP 30529686 A JP30529686 A JP 30529686A JP 30529686 A JP30529686 A JP 30529686A JP S63158159 A JPS63158159 A JP S63158159A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- steel sheet
- resin powder
- sheet pile
- resin
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 218
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 106
- 239000010959 steel Substances 0.000 title claims abstract description 106
- 229920005989 resin Polymers 0.000 title claims abstract description 87
- 239000011347 resin Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims description 24
- 238000000576 coating method Methods 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 45
- 238000011084 recovery Methods 0.000 claims abstract description 17
- 230000004927 fusion Effects 0.000 claims description 19
- 238000009415 formwork Methods 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 claims description 2
- -1 rainwater Substances 0.000 description 12
- 238000005507 spraying Methods 0.000 description 9
- 229920000915 polyvinyl chloride Polymers 0.000 description 8
- 239000004800 polyvinyl chloride Substances 0.000 description 8
- 239000004698 Polyethylene Substances 0.000 description 7
- 239000003973 paint Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000003892 spreading Methods 0.000 description 5
- 230000007480 spreading Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 4
- 229920006311 Urethane elastomer Polymers 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000005422 blasting Methods 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007765 extrusion coating Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000009675 coating thickness measurement Methods 0.000 description 1
- 229940125782 compound 2 Drugs 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は鋼矢板の表面に有機樹脂の防食被覆を施す樹脂
粉体融着被覆鋼矢板の製造方法および装置に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for manufacturing a resin powder fusion-coated steel sheet pile, which applies an anticorrosion coating of an organic resin to the surface of the steel sheet pile.
〈従来の技術〉
一般に鋼管杭、鋼管矢板、鋼矢板は、港湾、河川、海岸
などで構築物の構造や土砂の土留めの目的で使用されて
いる。これらの鋼材は、特に水面側では、河川水、廃水
、雨水、海水などの水や大気、太陽光などに曙され、ま
た流水、波浪あるいは流源物などの衝撃を受け、著しく
腐食を受けやすい状況にある。<Prior Art> Generally, steel pipe piles, steel pipe sheet piles, and steel sheet piles are used for the purpose of constructing structures and retaining earth and sand in ports, rivers, coasts, etc. These steel materials, especially on the water surface, are exposed to water such as river water, wastewater, rainwater, seawater, the atmosphere, sunlight, etc., and are also subject to impact from running water, waves, or sources, and are extremely susceptible to corrosion. situation.
しかしながら、従来その効果的な腐食防止法がなく、無
機ジンク塗料やタール・エポキシ樹脂塗料による塗装、
エポキシ樹脂や不飽和ポリエステル樹脂によるＦＲＰ被
覆などによって腐食防止が図られてきたが、それらは機
械的強度、長期の耐久性等の点で、効果的な腐食防止法
ではなかった。However, there is currently no effective corrosion prevention method, and painting with inorganic zinc paint or tar epoxy resin paint,
Corrosion prevention has been attempted by coating FRP with epoxy resin or unsaturated polyester resin, but these are not effective corrosion prevention methods in terms of mechanical strength, long-term durability, etc.
さらに、水中部の防食には従来から電気防食法が多く通
用されているが、干満帯や飛沫帯では効果的ではなく、
塗装に転っているが、その効果は前述のように十分では
ない。Furthermore, cathodic protection methods have traditionally been widely used to prevent corrosion in underwater areas, but they are not effective in tidal zones or splash zones.
Painting has been applied, but the effect is not sufficient as mentioned above.
しかしその後、鋼管杭については、ラインパイプの防食
被覆技術を生かして、防食効果が高く耐久性の優れた被
覆材料であるポリオレフィン樹脂を押出成形したプラス
チック層を溶融状態で接着側を介して鋼管面上に密着さ
せる押出被覆法や、タール・ウレタン樹脂、ウレタンエ
ラストマー樹脂をエアーレススプレー塗装により鋼管表
面に被覆させる方法等によって、優れた防食被覆を有す
る製品が実用化され、性能、経済面で著しい改善がなさ
れた。However, later on, steel pipe piles were developed by taking advantage of anti-corrosion coating technology for line pipes, and applying a plastic layer made by extruding polyolefin resin, which is a coating material with high anti-corrosion effects and excellent durability, to the steel pipe surface through the adhesive side in a molten state. Products with excellent anti-corrosion coatings have been put into practical use through methods such as extrusion coating methods in which the surfaces of steel pipes are coated with tar-urethane resins and urethane elastomer resins using airless spray coating, and they have achieved remarkable performance and economical benefits. Improvements have been made.
一方、鋼管矢板、鋼矢板については、爪部が両側に付い
ている等形状が複雑なため、前述の押出被覆法によるプ
ラスチック被覆ができず、タール・ウレタン樹脂、ウレ
タンエラストマー樹脂をエアーレススプレーにより被覆
する方法が適用され、著しい改善がなされた。On the other hand, steel pipe sheet piles and steel sheet piles have complex shapes such as claws on both sides, so it is not possible to coat them with plastic using the extrusion coating method described above, so tar, urethane resin, and urethane elastomer resin can be coated with airless spray. A method of coating has been applied and significant improvements have been made.
〈発明が解決しようとする問題点〉
しかしながらエアーレススプレー法によるター”ルウレ
タン樹脂塗料やウレタンエラストマー樹脂塗料被覆は、
塗膜自体の吸水率が高く、ポリオレフィン系被覆に比較
してやや防食性に劣ることと、エアーレススプレー法で
は塗料の塗着効率は低く、塗料の飛散等の環境問題もあ
り、これらの欠点を改善する方法の出現が強く望まれて
いた。<Problems to be solved by the invention> However, coating with tar urethane resin paint or urethane elastomer resin paint using the airless spray method is difficult.
The paint film itself has a high water absorption rate and is slightly inferior in corrosion resistance compared to polyolefin coatings, and the airless spray method has low paint transfer efficiency and environmental problems such as paint scattering. There was a strong desire for a method to improve this.
これらの欠点を解消すべく、鋼矢板に、架橋したポリエ
チレンシートをロールにより圧着被覆する方法として特
開昭５９−２２４７１７号公報や特開昭５９−２２４７
１８号公報に開示されているが、これらには被覆時に気
泡を巻き込んだり、ポリエチレンシート圧着時にポリエ
チレンシートを変形させやすいという問題がある。In order to eliminate these drawbacks, Japanese Patent Laid-Open No. 59-224717 and Japanese Patent Laid-Open No. 59-2247 disclose a method of applying a cross-linked polyethylene sheet to a steel sheet pile by pressure bonding with a roll.
Although these methods are disclosed in Japanese Patent No. 18, there are problems in that air bubbles are drawn in during coating, and the polyethylene sheet is easily deformed during pressure bonding.
また、樹脂粉体被覆法としては、流動浸漬法により鋼管
に全面塗装する方法が例えば特開昭５９−４２０６９号
公報等に、鋼管外面のみに塗装する方法が例えば特開昭
５８−２０２０７３号公報等に開示され、鋼矢板に関し
ては片面に全面被覆する方法が例えば特開昭６０−２３
０８４８号公報に開示されているが、これにはポリオレ
フィン押しつけ時にポリオレフィンが変形するという問
題がある。Furthermore, as a resin powder coating method, a method of coating the entire surface of a steel pipe by a fluidized dipping method is disclosed in, for example, Japanese Patent Application Laid-open No. 59-42069, and a method of coating only the outer surface of a steel pipe is described in, for example, Japanese Patent Application Laid-Open No. 58-202073. For steel sheet piles, a method of coating the entire surface on one side is disclosed in, for example, JP-A-60-23.
Although it is disclosed in Japanese Patent No. 0848, there is a problem that the polyolefin is deformed when the polyolefin is pressed.
また、特開昭６０−２２３５３１号公報に開示されるよ
うに、鋼矢板を粉体の充填された槽内を通過させるか、
または流動槽内に鋼矢板を入れて過剰粉体を鋼矢板を反
転して回収する方法により被覆が可能であるが、この方
法では、鋼矢板凹面被覆において一度に粉体を鋼矢板に
被覆するために、ウェブ部で、凹面のため熱の対流が生
じ、ウェブ部の膜厚が、その他の部位に比較して大きく
なるという問題がある。In addition, as disclosed in Japanese Patent Application Laid-open No. 60-223531, steel sheet piles may be passed through a tank filled with powder, or
Alternatively, it is possible to coat the steel sheet piles by putting them in a fluidized tank and collecting the excess powder by inverting the steel sheet piles, but in this method, the powder is coated on the steel sheet piles all at once in concave steel sheet pile coating. Therefore, there is a problem that heat convection occurs in the web part due to the concave surface, and the film thickness of the web part becomes larger than that of other parts.
本発明は上記のような事情に鑑みてなされたもので、上
述の問題点を解決し、鋼矢板の凹面に効率的かつ均一に
有機樹脂被覆を行うのに好適な樹脂粉体融着被覆鋼矢板
の製造方法および装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and provides a resin powder fusion-coated steel suitable for solving the above-mentioned problems and efficiently and uniformly coating concave surfaces of steel sheet piles with organic resin. The object of the present invention is to provide a method and device for manufacturing sheet piles.
〈問題点を解決するための手段〉
本発明は、鋼矢板を脱錆、予熱した後、樹脂粉体融着を
行って、樹脂粉体融着被覆鋼矢板を製造するに際し、鋼
矢板に対し長手方向に相対的に移動する供給手段から樹
脂粉体を継手部、コーナ部、フランジ部に最初に供給撒
布した後、時間差を設けてウェブ部に樹脂粉体を供給撒
布し、後続して長手方向に前記供給手段と同一方向に相
対的に移動する回収手段からフランジ部、ウェブ部、継
手部、コーナ部の余剰樹脂粉体を回収することを特徴と
する被覆膜厚の均一な樹脂粉体融着被覆鋼矢板の製造方
法であり、
また、鋼矢板を脱錆、予熱した後、樹脂粉体融着を行っ
て樹脂粉体融着被覆鋼矢板を製造する装置であって、鋼
矢板の凹面の継手部、コーナ部、フランジ部に粉体供１
給する第１の粉体供給口と、ウェブ部に粉体供給する第
２の粉体供給口を鋼矢板長手方向に所定距離だけ離して
設けるとともに、前記第１と第２の供給口の間にウェブ
部とフランジ部を仕切る所定長さの型枠を設け、ウェブ
部を除く部分に先行して粉体供給できる粉体供給手段と
、鋼矢板の長手方向に前記第２の粉体供給口と所定間隔
離して配設された鋼矢板の凹面に沿う開口部を存した粉
体回収手段と、前記粉体供給手段と前記粉体回収手段の
間に配設され、粉体を循環させるための粉体循環手段と
、これら粉体供給手段、粉体回収手段および粉体循環手
段とを鋼矢板に対し相対的に移動可能とする駆動手段と
を有することを特徴とする被覆膜厚の均一な樹脂粉体融
着被覆鋼矢板の製造装置である。<Means for Solving the Problems> The present invention provides a method for manufacturing resin powder fusion-coated steel sheet piles by derusting and preheating steel sheet piles, and then applying resin powder fusion bonding to the steel sheet piles. After first supplying and distributing resin powder to the joints, corners, and flange sections from a supply means that moves relatively in the longitudinal direction, the resin powder is supplied and dispersing to the web section with a time lag, and then the resin powder is supplied and distributed to the web section, and then the resin powder is supplied and distributed to the joint section, corner section, and flange section. Resin powder with a uniform coating film thickness, characterized in that excess resin powder at flange parts, web parts, joint parts, and corner parts is collected from a collection means that moves relatively in the same direction as the supply means. A method for producing steel sheet piles coated with body fusion bonding, and an apparatus for manufacturing steel sheet piles coated with resin powder bonding by derusting and preheating steel sheet piles, and then performing resin powder fusion bonding, the steel sheet piles Apply powder to the concave joints, corners, and flanges.
A first powder supply port for supplying powder to the web portion and a second powder supply port for supplying powder to the web portion are provided separated by a predetermined distance in the longitudinal direction of the steel sheet pile, and between the first and second supply ports. A formwork of a predetermined length is provided to partition the web part and the flange part, and a powder supplying means capable of supplying powder in advance to the part other than the web part, and the second powder supply port in the longitudinal direction of the steel sheet pile are provided. and a powder collection means having an opening along the concave surface of a steel sheet pile arranged to be separated by a predetermined distance from the powder supply means and the powder collection means, and arranged between the powder supply means and the powder collection means for circulating the powder. A method of reducing coating film thickness, characterized by having a powder circulation means, and a drive means that allows these powder supply means, powder collection means, and powder circulation means to be moved relative to the steel sheet pile. This is a manufacturing device for uniform resin powder fusion-coated steel sheet piles.
〈発明の構成〉
以下、本発明について、その好適な構成を図面に基づい
て説明する。<Configuration of the Invention> Hereinafter, a preferred configuration of the present invention will be explained based on the drawings.
鋼矢板１は、第１図に示すように両側部が立ち上がり部
を形成し、この立ち上がり部の先端はそれぞれ爪部１ａ
、 ｌｂを形成している。As shown in FIG. 1, the steel sheet pile 1 has rising parts on both sides, and the ends of the rising parts each have claw parts 1a.
, forming lb.
まず、鋼矢板１の被粉体融着面である凹面（第１図をシ
ョツトブラスト、サンドブラストや酸洗等の前処理を施
してミルスケールや錆等を除去した処理面に、好ましく
はクロム酸化合物２および／またはアクリル樹脂、ウレ
タン樹脂やエポキシ樹脂等からなるブライマー３を塗布
しておく。First, the concave surface of the steel sheet pile 1 (see Figure 1), which is the surface to which the powder is fused, is pretreated with shot blasting, sandblasting, pickling, etc. to remove mill scale, rust, etc. A brimer 3 made of compound 2 and/or acrylic resin, urethane resin, epoxy resin, etc. is applied in advance.
この鋼矢板１を、図示しないインダクションヒーター、
電気炉、ガス炉等で２００℃以上に加熱（予熱）し、こ
の加熱した鋼矢板１上に、後述するように樹脂粉体撒布
装置１０を鋼矢板１に対し一定速度にて相対的に移動さ
せながら樹脂粉体１７（第２図）を融着させる。ここで
、予熱温度を２００℃以上としたのはラインの生産性か
ら、この程度が好ましく、さらに用いる樹脂粉体１７の
種類に応じて加熱温度を選択すればよい。This steel sheet pile 1 is connected to an induction heater (not shown),
The heated steel sheet pile 1 is heated (preheated) to 200° C. or higher using an electric furnace, gas furnace, etc., and a resin powder spreading device 10 is moved relative to the steel sheet pile 1 at a constant speed as described later. The resin powder 17 (FIG. 2) is fused while this is being carried out. Here, the reason why the preheating temperature is set to 200° C. or higher is preferably at this level from the viewpoint of line productivity, and the heating temperature may be selected depending on the type of resin powder 17 used.
樹脂粉体撒布装置１０は、粉体供給手段である粉体供給
装置１１および継手、コーナ、フランジ用の第１の粉体
供給口１２とウェブ用の第２の粉体供給口１２′ と、
粉体回収手段である粉体回収装置１３および粉体回収口
１４とが粉体循環手段である粉体輸送管１６’ 、１
６” 、１６”にて連結されたもので、粉体供給装置
１１と粉体回収装置１３との間の輸送管１６には粉体ふ
るい装置１５を配設するのが好ましい。The resin powder spreading device 10 includes a powder supply device 11 as a powder supply means, a first powder supply port 12 for joints, corners, and flanges, and a second powder supply port 12' for the web.
The powder recovery device 13, which is a powder recovery means, and the powder recovery port 14 are connected to a powder transport pipe 16', 1, which is a powder circulation means.
It is preferable that a powder sifting device 15 is disposed in the transport pipe 16 between the powder supply device 11 and the powder recovery device 13.
粉体供給口１２ 、１２’ と粉体回収口１４は、それ
ぞれ粉体輸送管１６の前端と後端に配設され、継手部、
フランジ部、コーナ部へ粉体供給する供給口１２とウェ
ブ部へ粉体供給する供給口１２′ との間を間隔ｈ （
ｍ）離隔配設され、さらにウェブ部の粉体供給口１２′
から粉体回収口１４は間隔ｚ （ｍ）にて離隔配設され
ている。The powder supply ports 12 and 12' and the powder recovery port 14 are arranged at the front end and rear end of the powder transport pipe 16, respectively, and the joint portion,
A gap h (
m) Powder supply port 12' in the web section, which is arranged at a distance;
The powder recovery ports 14 are spaced apart from each other by an interval z (m).
ここで、鋼矢板１の凹面被覆について、樹脂粉 一体撤
布装置１０と樹脂粉体融着方法について説明する。Here, regarding the concave surface coating of the steel sheet pile 1, the resin powder integrated removal device 10 and the resin powder fusion method will be described.
第３図ｔａ＋に示すように、樹脂粉体撒布装置１０の粉
体供繕口１２ 、１２’ は、粉体供給装置１１に接続
された２本の粉体輸送管１６’ 、１６”からそれぞ
れ分岐されたパイプ１２ａ、 １２ｂ、 １２ｃ、
１２ｅ、 １２ｆ。As shown in FIG. 3 ta+, the powder supply ports 12 and 12' of the resin powder dispersing device 10 are connected to two powder transport pipes 16' and 16'' connected to the powder supply device 11, respectively. Branched pipes 12a, 12b, 12c,
12e, 12f.
１２ｇおよび１２ａ ’ の各先端が各々鋼矢板１の凹
面に間隔ｈ（ｍ）Ｘ！隔配置されて、拡開開口され、粉
体供給口１２ 、１２’ を形成している。この各粉体
供給口１２ 、１２’ は、鋼矢板の凹面から上方にわ
ずかに離隔されている。各粉体供給口１２ 、１２’へ
の粉体の供給は、第４図に示すように鋼矢板の凹面に沿
って形成された粉体こぼれ防止型枠１９が、各粉体供給
口を過ぎた時に２本の粉体輸送管１６′。The tips of 12g and 12a' are respectively placed on the concave surface of the steel sheet pile 1 at a distance h(m)X! The openings are spaced apart and widened to form powder supply ports 12 and 12'. Each powder supply port 12, 12' is slightly spaced upward from the concave surface of the steel sheet pile. Powder is supplied to each powder supply port 12, 12' by a powder spill prevention form 19 formed along the concave surface of the steel sheet pile, as shown in FIG. At the same time, two powder transport pipes 16' are used.
１６″から供給される。また他端のこぼれ型枠１９′が
、各粉体供給口をすぎた時粉体の供給は停止される。こ
の時、継手部、フランジ部、コーナ部に粉体供給する１
２ａ、 １２ｂ、 １２ｃ、 １２ｅ、 １２
ｆ。16''. Also, when the spilling formwork 19' at the other end passes each powder supply port, the supply of powder is stopped. At this time, powder is supplied to the joint, flange, and corner. supply 1
2a, 12b, 12c, 12e, 12
f.
１２ｇは、１２８′ に対しｈ ／ ｘ分（ｘ：移動速
度ｍ７分）先に粉体供給される。さらにウェブ部の粉体
供給口１２８′ と所定間隔ｚ （ｍ）を隔てて同一
形状の粉体回収口１４が粉体輸送管１６″に連設され、
この凹面から上方にわずかに離隔して配設される。また
、継手部、フランジ部、コーナ部へ供給された粉体は、
ウェブへ粉体がこぼれ落ちないように型枠２０が第３図
に示すように設けられている。12g is supplied as a powder h/x minutes (x: moving speed m7 minutes) earlier than 128'. Further, a powder recovery port 14 having the same shape as the powder supply port 128' of the web portion and a predetermined distance z (m) is connected to the powder transport pipe 16'',
It is arranged at a slight distance upward from this concave surface. In addition, the powder supplied to the joints, flanges, and corners is
A formwork 20 is provided as shown in FIG. 3 to prevent powder from spilling onto the web.
鋼矢板１の立ち上がり部外壁には、爪部１ａ。The outer wall of the rising portion of the steel sheet pile 1 has a claw portion 1a.
１ｂに接して断面り字形の型枠７．８が、例えば粘着テ
ープ等によって取付けられている。この型枠７゜８は、
樹脂粉体撒布装置１０にて樹脂粉体１７を供給する際、
この樹脂粉体１７が下方にこぼれ落ちるのを防止するた
めのものである。A formwork 7.8 having an angular cross-section is attached in contact with 1b using adhesive tape or the like, for example. This formwork 7°8 is
When supplying the resin powder 17 with the resin powder spraying device 10,
This is to prevent the resin powder 17 from spilling downward.
かかる形状の粉体供給口１２ 、１２’ と粉体回収口
１４とを有する樹脂粉体撒布装置１０’を用いて有機樹
脂粉体１７を鋼矢板１の凸面上に融着させるには、第２
図、第３図（ａｌに示すように加熱した鋼矢板１の長さ
方向一端上方に樹脂粉体撒布装置１０を位置させ、この
樹脂粉体撒布装置１０を鋼矢板１の他端方向に、適当な
駆動手段（図示せず）によって移動速度ｘ ｍ７分に
て移動させる。樹脂粉体撒布装置１０を移動させないで
静止させ、鋼矢板ｌを例えばレール（図示せず）上に載
せ、ｘ （ｍ７分）にて移動させてもよく、要は樹脂粉
体撒布装置１０と鋼矢板１とを相対的に移動速度ｘ （
ｍ７分）にて移動させるように構成すればよい。In order to fuse the organic resin powder 17 onto the convex surface of the steel sheet pile 1 using the resin powder dispersing device 10' having the powder supply ports 12, 12' and the powder recovery port 14 having such a shape, the steps are as follows. 2
As shown in Fig. 3 (al), the resin powder spreading device 10 is positioned above one end in the length direction of the heated steel sheet pile 1, and the resin powder spreading device 10 is placed in the direction of the other end of the steel sheet pile 1. It is moved at a moving speed x m7 minutes by an appropriate drive means (not shown).The resin powder spraying device 10 is kept stationary without moving, and the steel sheet pile l is placed on, for example, a rail (not shown), and x ( The resin powder spraying device 10 and the steel sheet pile 1 may be moved at a relative moving speed x (
It may be configured to move at m7 minutes).
このように′鋼矢板１と粉体撒布装置１０とを相対移動
させながら、粉体供給装置１１に図示しない供給路から
供給された未使用の樹脂粉体１７を、粉体輸送管１６’
、１６″を介して１．圧縮空気にて粉体供給口１２ 、
１２’から鋼矢板１上に噴出塗布させる。While relatively moving the steel sheet pile 1 and the powder spraying device 10 in this way, the unused resin powder 17 supplied to the powder supply device 11 from the supply path (not shown) is transferred to the powder transport pipe 16'.
, 16″ through 1. Powder supply port 12 with compressed air,
It is applied by spraying onto the steel sheet pile 1 from 12'.
ｚ ／ ｘ分後、粉体回収口１４からは、粉体回収装置
１３に内蔵された吸引ファン（図示せず）によって、鋼
矢板１に未融着の残った樹脂粉体１７が吸い込まれ、鋼
矢板ｌ上には融着された樹脂粉体融着被覆１８が連続的
に形成される。After z/x minutes, the resin powder 17 remaining unfused to the steel sheet pile 1 is sucked from the powder collection port 14 by a suction fan (not shown) built in the powder collection device 13. A resin powder fused coating 18 is continuously formed on the steel sheet pile l.
粉体回収口１４から吸引、回収された樹脂粉体１７は、
粉体輸送管１６を経て粉体回収装置１１３から粉体ふる
い装置１５へ送りこまれてふるいにかけられ、さらに粉
体供給装置１１へ送られる。The resin powder 17 sucked and collected from the powder collection port 14 is
The powder is sent from the powder recovery device 113 to the powder sieving device 15 via the powder transport pipe 16, sieved, and further sent to the powder supply device 11.
ここで、場合に応じて、前述の供給路から供給される未
使用の樹脂粉体１７と混合され、あるいは回収された樹
脂粉体１７のみが、粉体輸送管１６′。Here, depending on the case, only the unused resin powder 17 supplied from the above-mentioned supply path or the recovered resin powder 17 is mixed with the powder transport pipe 16'.
１６′を経て粉体供給口１２ 、１２’ から鋼矢板１
上に噴出塗布される。未使用の樹脂粉体１７の供給は、
あらかじめ設定した粒度を超えるものが発生したり、熱
劣化等に応じて行えばよい。16' and then the steel sheet pile 1 from the powder supply port 12 and 12'.
Sprayed on top. The supply of unused resin powder 17 is as follows:
This may be done in response to the occurrence of particles exceeding a preset particle size, thermal deterioration, etc.
これにより、樹脂粉体１７を循環させて効率よく鋼矢板
１上に樹脂粉体融着被覆１８を形成することができる（
第３図Ｔｏ）参照）。Thereby, the resin powder 17 can be circulated to efficiently form the resin powder fused coating 18 on the steel sheet pile 1 (
(See Figure 3 To)).
この後、空冷、水冷等により４０℃程度まで冷却する。Thereafter, it is cooled to about 40° C. by air cooling, water cooling, or the like.
ここで第３図ｆａｔに示すように、粉体供給口１２゜１
２′ が鋼矢板１の凹面に平行に拡開開口されているこ
とにより被覆のむらが防止でき、型枠７．８゜１９ 、
１９’ により樹脂粉体１７の飛散が防止できる。Here, as shown in Figure 3 fat, the powder supply port 12°1
2' is widened parallel to the concave surface of the steel sheet pile 1, which prevents uneven coating, and formwork 7.8°19,
19' can prevent the resin powder 17 from scattering.
なお、鋼矢ＦＸ１の凹面粉体供給口１２ 、１２’ か
ら噴出塗布される樹脂粉体１７を、最終的に形成される
融着被覆１８の膜厚の３〜５倍以上の厚さにし、熱効率
よく融着被覆１８を形成するのが好ましい。In addition, the resin powder 17 sprayed and applied from the concave powder supply ports 12 and 12' of the Steel Arrow FX1 is made to have a thickness that is 3 to 5 times or more than the thickness of the fusion coating 18 that is finally formed. It is preferable to form the fusion coating 18 with good thermal efficiency.
また、あらかじめ予備実験等で、樹脂粉体融着被覆１８
の所定膜厚を得るために鋼材表面温度、冷却温度等をそ
れぞれ設定した樹脂粉体１７の鋼矢板１への接触時間を
ｙ分とすると、ｚ＝ｘｙの関係から、前述した相対移動
速度ｘ ｍ７分に応じて、前記粉体供給口１２と粉体
回収口１４との間隔２およびｙとをそ゛れぞれ適宜変え
てもよい。In addition, in preliminary experiments etc., the resin powder fusion coating 18
If the contact time of the resin powder 17 with the steel sheet pile 1, for which the steel surface temperature, cooling temperature, etc. are set respectively, is y minutes in order to obtain a predetermined film thickness of , then from the relationship z=xy, the relative movement speed x The distance 2 and y between the powder supply port 12 and the powder recovery port 14 may be changed as appropriate depending on the m7 minutes.
次に、本発明に用いる樹脂粉体について述べる。Next, the resin powder used in the present invention will be described.
樹脂粉体としては、ポリエチレン、エチレン−酢酸ビニ
ル共重合体、エチレン−プロピレン共重合体、エチレン
−アクリルニトリル共重合体、ポリプロピレン、ポリ塩
化ビニル、ポリブテン、ポリエステル、ポリアミド、ポ
リエーテルケトン、ポリエーテルサルホン、ＰＴＦＢな
どの含フン素樹脂粉体等の熱可望性樹脂があげらるにれ
らの有機樹脂粉体は、ポリオレフィン系の場合、無水マ
レイン酸、アクリル酸等で変性したポリオレフィンを一
層に塗布するが、あるいはこれらの上にさらに未変性の
ポリオレフィン粉体を重ね塗りして２層被覆としてもよ
い。Examples of resin powder include polyethylene, ethylene-vinyl acetate copolymer, ethylene-propylene copolymer, ethylene-acrylonitrile copolymer, polypropylene, polyvinyl chloride, polybutene, polyester, polyamide, polyetherketone, polyethersal. In the case of polyolefin-based organic resin powders, thermoplastic resins such as fluorine-containing resin powders such as fluorine and PTFB are used. Alternatively, unmodified polyolefin powder may be further coated on top of these to form a two-layer coating.
前記有機樹脂粉体には、紫外線劣化防止剤、熱劣化防止
剤、カーボンブランクや着色顔料を使用し、接着剤を含
めた防食被覆の厚さは０．５ｍｍ以上とするのが好まし
い。０．５ｇｍ未満では、被覆にピンホールが発生する
危険があるからである。It is preferable that an ultraviolet deterioration inhibitor, a heat deterioration inhibitor, a carbon blank, or a colored pigment be used in the organic resin powder, and the thickness of the anticorrosive coating including the adhesive is 0.5 mm or more. This is because if it is less than 0.5 gm, there is a risk that pinholes will occur in the coating.
また、有機樹脂粉体の粒度は５０〜８００ μｍの範囲
がよく、好ましくは１００〜４５０ μｍがよい。粒度
が小さすぎると圧縮空気または自然落下により鋼矢板面
に供給する時、飛散が多く、塗布効率が低くなるのでコ
ストアップになる。一方粒度が大きすぎると、塗布効率
は良くなるが、粉体の溶融が不充分になりやすく、その
結果、被覆の表面が平滑になりにくい（噴量がある。Further, the particle size of the organic resin powder is preferably in the range of 50 to 800 μm, preferably 100 to 450 μm. If the particle size is too small, there will be a lot of scattering when the powder is supplied to the steel sheet pile surface using compressed air or gravity, reducing coating efficiency and increasing costs. On the other hand, if the particle size is too large, the coating efficiency is improved, but the powder tends to be insufficiently melted, and as a result, the surface of the coating is difficult to achieve (there is a large amount of spray).
〈実施例〉
以下に、本発明の実施について説明する。なお、以下に
述べる第１〜２実施例にて用いる鋼矢板の凹面について
は、第５図に示すようにａ −ｏの測定部位を設は樹脂
粉体融着被覆の膜厚と樹脂粉体の種類、凹面各部位との
関係を調べた。<Example> The implementation of the present invention will be described below. In addition, regarding the concave surface of the steel sheet pile used in the first and second examples described below, the measurement points a - o were set as shown in Fig. 5, and the film thickness of the resin powder fusion coating and the resin powder We investigated the type of concavity and its relationship with each part of the concave surface.
［実施例１］
長さ５ｍの■型鋼矢板（寸法４００ｗ Ｘ １３０ｈ
ｘ１３、Ｏｔ ｍｍ）の凹面をグリッドブラスト処理し
、クロメート処理剤（クロム酸化合物）を塗布した後鋼
矢板を１００℃まで加熱し、エポキシプライマーを約３
０μｍ厚さにエアーレススプレー塗布し、さらに鋼矢板
を２４０℃まで予熱した。[Example 1] 5m long ■-shaped steel sheet pile (dimensions 400w x 130h
After grid-blasting the concave surface of 13 mm x 13 Ot mm and applying a chromate treatment agent (chromic acid compound), the steel sheet pile was heated to 100℃, and an epoxy primer was applied to the
Airless spray coating was applied to a thickness of 0 μm, and the steel sheet pile was further preheated to 240°C.
その後、鋼矢板に継手部、コーナ部、フランジ部に先に
粉体供給されるよう粉体こぼれ防止用の型枠を取付け、
搬送ローラーで鋼矢板を１ｍ／分の搬送速度で移動させ
ると共に、継手、コーナ、フランジ部への粉体供給口と
ウェブ部への粉体供給口との間隔を２５ｃｍとし、さら
にウェブ部の粉体供給口と粉体回収口との間隔を２ｍに
あらかじめ設定した樹脂粉体撒布装置にて、接着性ポリ
エチレン粉体（Ｍ Ｉ ＝３．０ 、密度＝０．９２５
、融点＝１２１℃、軟化点９８℃、粒度１００〜３５
０ μｍ）を噴出塗布し、その後吸引回収する。鋼矢板
上の噴出塗布樹脂粉体の接触時間は２分間である。After that, formwork to prevent powder spillage was attached to the steel sheet pile so that the powder was supplied to the joints, corners, and flanges first.
The steel sheet piles are moved at a transport speed of 1 m/min using transport rollers, and the distance between the powder supply ports to the joints, corners, and flanges and the powder supply ports to the web part is set to 25 cm, and the powder in the web part is Adhesive polyethylene powder (M I = 3.0, density = 0.925
, melting point = 121°C, softening point 98°C, particle size 100-35
0 μm) is spray applied and then collected by suction. The contact time of the spray-applied resin powder on the steel sheet pile is 2 minutes.
その後、鋼矢板の保有熱で鋼矢板上の粉体を表面まで完
全に融着し、空冷、続いて水冷し、平均膜厚２．５鶴の
凹面ポリエチレン被覆鋼矢板を得た。Thereafter, the powder on the steel sheet pile was completely fused to the surface using the heat retained by the steel sheet pile, and the powder was cooled in air and subsequently in water to obtain a concave polyethylene-coated steel sheet pile with an average thickness of 2.5 mm.
この凹面ポリエチレン被覆の膜厚を電磁式膜厚計で第５
図に示す各部位ａ〜０ごとに測定したところ、第６図に
示すような結果を得た。The film thickness of this concave polyethylene coating was measured using an electromagnetic film thickness meter.
When measurements were made for each site a to 0 shown in the figure, the results shown in FIG. 6 were obtained.
［実施例２コ
長さ５ｍの■型鋼矢板（寸法４００ｗ ｘ １３０ｈ
ｘ １３．ＯＬｍ）の凹面をグリッドブラスト処理し、
アクリルプライマーを約３０μｍ塗布した後に鋼矢板を
２６０℃まで予熱した。[Example 2] ■-shaped steel sheet pile with a length of 5 m (dimensions 400w x 130h)
x 13. Grid blasting the concave surface of OLm),
After applying an acrylic primer to a thickness of about 30 μm, the steel sheet pile was preheated to 260°C.
その後、鋼矢板に継手部、コーナ部、フランジ部に先に
粉体供給されるよう粉体こぼれ防止用の型枠を取付け、
搬送ローラで鋼矢板を１ｍ／分の搬送速度で移動させる
と共に、継手、コーナ、フランジ部への粉体供給口とウ
ェブ部への粉体供給口との間隔を２５ｃｍとし、さらに
ウェブ部の粉体供給口と粉体回収口との間隔を１．５ｍ
にあらかじめ設定した樹脂粉体撒布装置にて、ポリ塩化
ビニル樹脂粉体（粒度５０〜１５０μｍ）を噴出塗布し
、その後吸引回収する。After that, formwork to prevent powder spillage was attached to the steel sheet pile so that the powder was supplied to the joints, corners, and flanges first.
The steel sheet piles are moved at a transport speed of 1 m/min by transport rollers, and the distance between the powder supply ports to the joints, corners, and flanges and the powder supply ports to the web part is set to 25 cm, and the powder in the web part is The distance between the powder supply port and the powder collection port is 1.5m.
Polyvinyl chloride resin powder (particle size: 50 to 150 μm) is sprayed and applied using a resin powder spraying device set in advance, and then collected by suction.
鋼矢板上の噴出塗布樹脂粉体の接触時間は１．５分間で
ある。The contact time of the jet-applied resin powder on the steel sheet pile is 1.5 minutes.
その後、鋼矢板の保有熱で鋼矢板上の粉体を表面まで完
全に融着し、空冷続いて水冷し、平均膜厚２．５ｆｉ厚
さの凹面ポリ塩化ビニル被覆鋼矢板を得た。Thereafter, the powder on the steel sheet pile was completely fused to the surface by the heat retained by the steel sheet pile, and the powder was air-cooled and then water-cooled to obtain a concave polyvinyl chloride-coated steel sheet pile with an average film thickness of 2.5 fi.
この凹面ポリ塩化ビニル被覆の膜厚を電磁式膜厚計で第
５図に示す各部位ａ〜０ごとに測定したところ、第７図
に示すような結果を得た。When the film thickness of this concave polyvinyl chloride coating was measured using an electromagnetic film thickness meter at each site a to 0 shown in FIG. 5, the results shown in FIG. 7 were obtained.
［比較例１］
ポリエチレン粉体を充填した槽内に、２６０℃に予熱し
た鋼矢板を通過させて、鋼矢板の凹面にポリエチレン被
覆を施した。この凹面ポリエチレン被覆の膜厚を測定し
た結果を、第６図に併せて示した。[Comparative Example 1] A steel sheet pile preheated to 260° C. was passed through a tank filled with polyethylene powder to coat the concave surface of the steel sheet pile with polyethylene. The results of measuring the film thickness of this concave polyethylene coating are also shown in FIG.
［比較例２］
塩化ポリビニル粉体を充填した槽内に、２６０℃に予熱
した鋼矢板を通過させて、鋼矢板の凹面にポリ塩化ビニ
ル被覆を施した。この凹面ポリ塩化ビニル被覆の膜厚を
測定した結果を、第７図に併せて示した。[Comparative Example 2] A steel sheet pile preheated to 260° C. was passed through a tank filled with polyvinyl chloride powder to coat the concave surface of the steel sheet pile with polyvinyl chloride. The results of measuring the film thickness of this concave polyvinyl chloride coating are also shown in FIG.
〈発明の効果〉
以上詳述したように、本発明によれば、月矢板の凹面の
ウェブ部の熱の対流による膜厚変動がおさえられ、樹脂
粉体融着被覆がほぼ均一の厚さに施される。また実ライ
ン上でも高精度で効率よく樹脂粉体融着被覆を行うこと
ができるので、製造工程の簡略化や低コスト化等、生産
面の上でも育利である等の効果がある。<Effects of the Invention> As described in detail above, according to the present invention, variations in film thickness due to heat convection on the concave web portion of the moon sheet pile are suppressed, and the resin powder fused coating has a substantially uniform thickness. administered. Further, since resin powder fusion coating can be performed efficiently and with high precision even on an actual line, there are effects such as simplification of the manufacturing process and cost reduction, which is advantageous in terms of production.
第１図は、樹脂粉体融着被覆鋼矢板の被覆構成図、第２
図は、樹脂粉体撒布装置を用いて鋼矢板へ樹脂粉体融着
被覆をする方法を示す説明図、第３図（ａｌは、鋼矢板
の凹面へ樹脂粉体融着被覆を施す場合の粉体供給口と鋼
矢板との関係を示す端面図、第３図ら）は、それによっ
て得られる樹脂粉体融着鋼矢板の端面図、第４図は、鋼
矢板の凹面被覆の際の粉体こぼれ防止用型枠の取付は状
態を示す斜視図、第５図は、本発明による鋼矢板の樹脂
粉体融着被覆厚測定部位を示す説明図、第６図は、本発
明によるポリエチレン被覆鋼矢板の凹面での各部位の膜
厚分布を示す図、第７図は、本発明によるポリ塩化ビニ
ル被覆鋼矢板の凹面での各部位の膜厚分布を示す図であ
る。
１・・・鋼矢板、 ２・・・クロム酸化合物、３・・・
ブライマー、 ？ 、 ８．１９．２０・・・型 枠、
１０・・・樹脂粉体撒布装置、 １１・・・粉体供給装
置（粉体供給手段）、 １２・・・粉体供給口（粉体供
給手段）、１３・・・粉体回収装置（粉体回収手段）、
１４・・・粉体回収口（粉体回収手段）、 １５・・
・粉体ふるい装置、１６・・・粉体輸送管（粉体ｗＸＮ
手段）、 １７・・・樹脂粉体、 １８・・・樹脂粉体
融着被覆
特許出願人 川崎製鉄株式会社
第 １ 図
第 ２ 図
第 ３ 図
（ａ）
（ｂ）
第 ４ 図
第５図
第６図
測定部位Figure 1 is a coating configuration diagram of resin powder fusion coated steel sheet pile, Figure 2
The figure is an explanatory diagram showing a method of applying resin powder fusion coating to steel sheet piles using a resin powder spraying device, and Figure 3 (al is an explanatory diagram showing the method of applying resin powder fusion coating to the concave surface of steel sheet piles). Figure 3) is an end view showing the relationship between the powder supply port and the steel sheet pile, and Figure 4 is an end view of the resulting resin powder-fused steel sheet pile. A perspective view showing the state of installation of the formwork for preventing body spillage, Fig. 5 is an explanatory view showing the resin powder fused coating thickness measurement site of the steel sheet pile according to the present invention, and Fig. 6 is a perspective view showing the installation state of the formwork for preventing body spillage. FIG. 7 is a diagram showing the film thickness distribution of each part on the concave surface of the steel sheet pile, and FIG. 7 is a diagram showing the film thickness distribution of each part on the concave surface of the polyvinyl chloride-coated steel sheet pile according to the present invention. 1... Steel sheet pile, 2... Chromic acid compound, 3...
Brimer, ? , 8.19.20... Formwork,
DESCRIPTION OF SYMBOLS 10...Resin powder spreading device, 11...Powder supply device (powder supply means), 12...Powder supply port (powder supply means), 13...Powder recovery device (powder supply means) body recovery means),
14...Powder collection port (powder collection means), 15...
・Powder sieving device, 16...Powder transport pipe (powder wXN
Means), 17...Resin powder, 18...Resin powder fusion coating Patent applicant Kawasaki Steel Corporation Figure 1 Figure 2 Figure 3 (a) (b) Figure 4 Figure 5 Figure 6 Measurement area
Claims (2)
て、樹脂粉体凹面被覆鋼矢板を製造するに際し、鋼矢板
に対し長手方向に相対的に移動する供給手段から樹脂粉
体を継手部、コーナ部、フランジ部に最初に供給撒布し
た後、時間差を設けてウェブ部に樹脂粉体を供給撒布し
、後続して長手方向に前記供給手段と同一方向に相対的
に移動する回収手段からフランジ部、ウェブ部、継手部
、コーナ部の余剰樹脂粉体を回収することを特徴とする
被覆膜厚の均一な樹脂粉体融着被覆鋼矢板の製造方法。(1) After derusting and preheating the steel sheet piles, resin powder is fused to produce resin powder concave-coated steel sheet piles. After first supplying and distributing the powder to the joint, corner, and flange, the resin powder is supplied to the web at a time lag, and then the resin powder is applied to the web in the longitudinal direction relative to the supply means. A method for producing a resin powder fusion-coated steel sheet pile having a uniform coating thickness, the method comprising collecting excess resin powder from a flange portion, web portion, joint portion, and corner portion from a moving collection means.
て樹脂粉体凹面被覆鋼矢板を製造する装置であって、鋼
矢板の凹面の継手部、コーナ部、フランジ部に粉体供給
する第１の粉体供給口と、ウェブ部に粉体供給する第２
の粉体供給口を鋼矢板長手方向に所定距離だけ離して設
けるとともに、前記第１と第２の供給口の間にウェブ部
とフランジ部を仕切る所定長さの型枠を設け、ウェブ部
を除く部分に先行して粉体供給できる粉体供給手段と、
鋼矢板の長手方向に前記第２の粉体供給口と所定間隔離
して配設された鋼矢板の凹面に沿う開口部を有した粉体
回収手段と、前記粉体供給手段と前記粉体回収手段の間
に配設され、粉体を循環させるための粉体循環手段と、
これら粉体供給手段、粉体回収手段および粉体循環手段
とを鋼矢板に対し相対的に移動可能とする駆動手段とを
有することを特徴とする被覆膜厚の均一な樹脂粉体融着
被覆鋼矢板の製造装置。(2) A device for producing resin powder concave-coated steel sheet piles by derusting and preheating steel sheet piles, and then performing resin powder fusion on the concave joints, corners, and flanges of the steel sheet piles. A first powder supply port for supplying powder, and a second powder supply port for supplying powder to the web portion.
Powder supply ports are provided a predetermined distance apart in the longitudinal direction of the steel sheet piles, and a formwork of a predetermined length is provided between the first and second supply ports to partition the web portion and the flange portion, and the web portion is separated by a predetermined distance. a powder supply means capable of supplying powder in advance of the part to be removed;
A powder recovery means having an opening along the concave surface of the steel sheet pile, which is arranged to be separated from the second powder supply port by a predetermined distance in the longitudinal direction of the steel sheet pile, the powder supply means, and the powder recovery means. a powder circulation means disposed between the means for circulating the powder;
Resin powder fusion with a uniform coating thickness, characterized by having a drive means that allows these powder supply means, powder collection means, and powder circulation means to be moved relative to the steel sheet pile. Manufacturing equipment for coated steel sheet piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30529686A JPS63158159A (en) | 1986-12-23 | 1986-12-23 | Method and apparatus for preparing resin powder fused and coated steel sheet pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30529686A JPS63158159A (en) | 1986-12-23 | 1986-12-23 | Method and apparatus for preparing resin powder fused and coated steel sheet pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63158159A true JPS63158159A (en) | 1988-07-01 |
Family
ID=17943390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30529686A Pending JPS63158159A (en) | 1986-12-23 | 1986-12-23 | Method and apparatus for preparing resin powder fused and coated steel sheet pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63158159A (en) |
-
1986
- 1986-12-23 JP JP30529686A patent/JPS63158159A/en active Pending
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