JP2001323360A - Joined structure of steel - Google Patents
Joined structure of steelInfo
- Publication number
- JP2001323360A JP2001323360A JP2000142789A JP2000142789A JP2001323360A JP 2001323360 A JP2001323360 A JP 2001323360A JP 2000142789 A JP2000142789 A JP 2000142789A JP 2000142789 A JP2000142789 A JP 2000142789A JP 2001323360 A JP2001323360 A JP 2001323360A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- metal
- steel material
- sprayed layer
- layer
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋼材の接合構造に
関する。TECHNICAL FIELD The present invention relates to a joint structure for steel materials.
【０００２】[0002]
【従来の技術】従来、鋼材を用いて構築する建造物で
は、鋼材同士の接合部は、原則として、現場での組み上
げ施工が完了するまで、塗装、めっき処理等の表面処理
を施さないこととしている。通常、鋼材同士の接合にお
いては、添板を接合される二の鋼材の接合部部の両側面
に配設し、接合部を両側面から挟み、添板と接合部を接
合ボルトによって締結することとしている。この際、接
合部と添板との間の摩擦力が、設定条件以下であると滑
りを生じ、接合構造として剛構造を維持できなくなる。
そこで、接合部においては、添板にも、鋼材にもめっき
処理等の表面処理を施さず、接合面を自然発錆させ、緻
密な赤錆面とし、所望の摩擦力を維持することとしてい
る。2. Description of the Related Art Conventionally, in a building constructed by using steel materials, joints between steel materials are, as a rule, not to be subjected to surface treatment such as painting, plating, etc. until assembly work on site is completed. I have. Normally, in joining steel materials, a base plate is provided on both side surfaces of a joint portion of two steel materials to be joined, the joint portion is sandwiched from both side surfaces, and the base plate and the joint portion are fastened with joining bolts. And At this time, if the frictional force between the joint and the attachment plate is below the set condition, slippage occurs, and a rigid structure cannot be maintained as the joint structure.
Therefore, in the joint portion, neither the base plate nor the steel material is subjected to surface treatment such as plating treatment, the joint surface is spontaneously rusted, and a dense red rust surface is maintained to maintain a desired frictional force.
【０００３】しかし、このようにするためには、現場に
おける組み上げ施工後、鋼材の腐食を防ぐためにを表面
処理する必要があった。一般に、現場におけるこのよう
な表面処理加工は、足場上の作業になること、処理機材
等の移動を伴う等工場内におけるよりもはるかに手間が
かかり、面倒な作業であった。加えて、未処理の接合部
からの錆汁の漏出等、防錆上の問題も大きかった。した
がって、鋼材の接合部における摩擦力を確保しつつ、鋼
材の接合部における表面処理を可能とすることが望まれ
ていた。[0003] However, in order to do this, it is necessary to perform a surface treatment to prevent corrosion of the steel material after assembling work on site. In general, such a surface treatment at a site is a much more troublesome and cumbersome operation than in a factory, such as work on a scaffold and movement of processing equipment and the like. In addition, rust prevention problems such as leakage of rust juice from untreated joints were also significant. Therefore, it has been desired to be able to perform a surface treatment on the joint portion of the steel material while securing the frictional force at the joint portion of the steel material.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記事情に鑑
みてなされたもので、鋼材の接合部における摩擦力を確
保しつつ、鋼材の接合部における表面処理を可能とした
鋼材の接合構造を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has a structure for joining steel materials that enables a surface treatment at the joints of steel materials while ensuring a frictional force at the joints of steel materials. The purpose is to provide.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る鋼材の接合構造は、鋼材同士を該鋼材
の接合部で添板によって接合するようにした鋼材の接合
構造において、鋼材の接合部に金属溶射層を設け、該金
属溶射層を設けた上記鋼材の接合部同士を表面摩擦層を
設けた添板で接合してなることを特徴とする。本発明に
係る鋼材の接合構造では、上記添板の表面摩擦層も、金
属溶射層とすることが好適である。Means for Solving the Problems In order to achieve the above object, a joint structure for steel materials according to the present invention is a joint structure for steel materials in which steel materials are joined to each other by joining plates at joints of the steel materials. A metal sprayed layer is provided at a joint of steel materials, and the joints of the steel materials provided with the metal sprayed layer are joined to each other by a supplementary plate provided with a surface friction layer. In the joint structure for steel materials according to the present invention, it is preferable that the surface friction layer of the base plate is also a metal sprayed layer.
【０００６】上記鋼材の接合部又は添板の金属溶射層
は、各種の当業者にとって公知の金属溶射法によって形
成することができる。そのうち、常温金属溶射によって
形成することが好適である。常温で処理することがで
き、鋼材等に不測のひずみを生じることがないからであ
る。上記鋼材の接合部の金属溶射層は、鋼材の表面に直
接設けることの他、溶融金属めっき層の上に設けること
もできる。また、金属溶射層は、鋼材の全表面に設ける
ことも、接合部のみに設けることもできる。上記添板の
表面摩擦層は、溶融金属めっき層とすることもできる。[0006] The metal sprayed layer of the joint portion of the steel material or the attached plate can be formed by various metal spraying methods known to those skilled in the art. Among them, it is preferable to form by normal temperature metal spraying. This is because it can be processed at normal temperature and does not cause unexpected distortion in steel materials or the like. The metal sprayed layer at the joint portion of the steel material may be provided directly on the surface of the steel material, or may be provided on the molten metal plating layer. Further, the metal sprayed layer may be provided on the entire surface of the steel material or may be provided only on the joint. The surface friction layer of the base plate may be a molten metal plating layer.
【０００７】[0007]
【発明の実施の形態】以下に、本発明に係る鋼材の接合
構造をその実施の形態に即してさらに詳細に説明する。
まず、図１に、本発明に係る鋼材の接合構造の一実施の
形態を示す。この実施の形態では、添板１、２を接合さ
れる二の鋼材３、４の接合部５、６の両側面に配設し、
接合部５、６を両側面から挟み、添板１、２と接合部
５、６を図示しない接合ボルトによって締結することと
している。接合ボルトは、好適には、溶融亜鉛めっきし
た高力ボルトである。BEST MODE FOR CARRYING OUT THE INVENTION The joining structure of a steel material according to the present invention will be described below in more detail in accordance with the embodiment.
First, FIG. 1 shows an embodiment of a steel material joining structure according to the present invention. In this embodiment, the attachment plates 1 and 2 are arranged on both sides of the joints 5 and 6 of the two steel materials 3 and 4 to be joined,
The joining portions 5 and 6 are sandwiched from both side surfaces, and the attachment plates 1 and 2 and the joining portions 5 and 6 are fastened by joining bolts (not shown). The joining bolt is preferably a hot-dip galvanized high strength bolt.
【０００８】本発明では、鋼材３、４の接合部５、６の
接合面に金属溶射層を設けている。この金属溶射層を設
けるための金属溶射の方法としては、ガスフレーム溶射
方法、電気アーク溶射方法等がある。本発明に係る鋼材
の接合構造では、後に説明する常温溶射法が好適であ
る。溶射する金属としては、亜鉛、亜鉛−アルミニウム
合金、後述する亜鉛−アルミニウム擬合金、アルミニウ
ム、銅、銅合金、チタン等を挙げることができる。In the present invention, a metal sprayed layer is provided on the joint surfaces of the joints 5 and 6 of the steel materials 3 and 4. Examples of the metal spraying method for providing the metal sprayed layer include a gas flame spraying method and an electric arc spraying method. In the joint structure of steel materials according to the present invention, the cold spraying method described later is preferable. Examples of the metal to be sprayed include zinc, a zinc-aluminum alloy, a zinc-aluminum pseudo alloy described later, aluminum, copper, a copper alloy, and titanium.
【０００９】このような金属溶射を行う具体的形態とし
ては、以下のものを挙げることができる。 （１）鋼材の接合部の接合面の付着物を除去し、さらに
その表面をブラスト処理し、常温金属溶射処理する。な
お、金属溶射処理に先立って、接合面に粗面形成剤を塗
布しておくこともできる。なおまた、このような金属溶
射処理は、接合部だけではなく、鋼材の全体にわたって
施すようにすることが好適である。 （２）鋼材の接合部の接合面を脱脂し、さらに目荒らし
を施し、常温金属溶射を行う。The following can be cited as specific modes for performing such metal spraying. (1) Deposits on the joint surface of the joint portion of the steel material are removed, and the surface is blasted and subjected to room temperature metal spraying. Prior to the metal spraying treatment, a roughening agent may be applied to the joint surface. In addition, it is preferable that such a metal spraying process is performed not only on the joint but also on the entire steel material. (2) The joining surface of the joining portion of the steel material is degreased, roughened, and subjected to room temperature metal spraying.
【００１０】本発明では、上記添板１、２に表面摩擦層
を設け、この表面摩擦層が、上記鋼材３、４の接合部
５、６の接合面の金属溶射層と接合することによって摩
擦力を確保することとしている。この表面摩擦層として
は、上記接合部５、６に設ける金属溶射層と同様の金属
溶射層とすることが好適である。しかし、この表面摩擦
層として溶融亜鉛めっき後、ブラスト処理したものを採
用することもできる。鋼材は、長尺ものの建材であり、
溶融亜鉛めっきを施すと、熱ひずみを生じることがあ
り、好ましくない。しかし、添板１、２は、比較的小さ
な部材であり、溶融亜鉛めっきを施しても差し支えない
からである。According to the present invention, a friction layer is provided on each of the base plates 1 and 2 and the surface friction layer is joined to the metal sprayed layer on the joint surfaces of the joints 5 and 6 of the steel materials 3 and 4 by friction. The power is to be secured. The surface friction layer is preferably a metal sprayed layer similar to the metal sprayed layer provided on the joints 5 and 6. However, it is also possible to employ a surface friction layer that has been subjected to blast treatment after galvanizing. Steel is a long building material,
When hot-dip galvanizing is applied, thermal distortion may occur, which is not preferable. However, the attachment plates 1 and 2 are relatively small members and may be subjected to hot-dip galvanizing.
【００１１】ついで、図２に示したフロー図に従って、
本発明に係る鋼材の接合構造で採用される金属溶射層の
形成方法について、その一実施の形態を説明する。この
方法では、亜鉛−アルミニウム擬合金金属溶射層を形成
しているが、他の金属の溶射法にもこの方法を適用する
ことができる。まず、鋼材を受け入れる（工程２０
１）。ここで表面の汚れの状態を把握する。Then, according to the flow chart shown in FIG.
An embodiment of a method for forming a metal sprayed layer employed in the joint structure of steel materials according to the present invention will be described. In this method, a zinc-aluminum pseudo-alloy metal sprayed layer is formed, but this method can also be applied to other metal spraying methods. First, a steel material is received (Step 20).
1). Here, the state of surface contamination is grasped.
【００１２】そして、素地調整（工程２０２）を行う。
ＩＳＯ８５０１−１のカラー見本帳に基づき、拡大鏡な
しで表面に目に見える油、グリース、泥土、及びミルス
ケール、錆、塗膜、異物がないように電動工具等によっ
てケレン処理する。ついで、脱脂処理（工程２０３）を
行う。この工程では、溶剤で表面の油脂分をウエス等に
より取り除く。または、洗剤にて洗い流す。Then, the substrate adjustment (step 202) is performed.
Based on the color sample book of ISO8501-1, without a magnifying glass, the surface is oiled, greased, muddy, and mill-scaled. Next, a degreasing treatment (step 203) is performed. In this step, oils and fats on the surface are removed with a solvent using a solvent. Or, rinse off with detergent.
【００１３】さらに、粗面化処理（工程２０４）を行
う。この粗面化処理は、粗面形成材を塗布することによ
って行うことが好適である。例えば、接合部５、６に粗
面形成材をエアースプレーによって、７５ｇ／ｍ2〜１
５０ｇ／ｍ2、好適には１００ｇ／ｍ2吹き付ける。粗面
形成材としては、エポキシ樹脂系、アクリル樹脂系等の
粗面形成材を用いることが好適である。粗面形成材を塗
布した後のＳｍ／Ｒｚを好ましくは４以下とする。ここ
で、Ｓｍとは、表面の凹凸間隔であり、Ｒｚは、粗面の
凹凸を表わす十点平均粗さである。Further, a roughening process (step 204) is performed. This roughening treatment is preferably performed by applying a roughening material. For example, a rough surface forming material is applied to the joints 5 and 6 by air spray at a rate of 75 g / m 2 to 1 g / m 2.
Spray 50 g / m 2 , preferably 100 g / m 2 . As the rough surface forming material, it is preferable to use a rough surface forming material such as an epoxy resin type or an acrylic resin type. Sm / Rz after applying the rough surface forming material is preferably 4 or less. Here, Sm is the distance between the irregularities on the surface, and Rz is the ten-point average roughness representing the irregularities on the rough surface.
【００１４】以上のような前処理を経て、溶射（工程２
０５）を行う。この金属溶射を行うための常温金属溶射
用アーク溶射ガンの一実施の形態を図３に示す。図３に
示すように、交流電源３０１に接続した金属線材３０
２、３０３をガン３０４の先でアーク溶融させ、コーン
状のエアノズル３０５からの気流３０６で鋼材３０７に
溶射することとしている。すなわち、溶射ガン３０４の
ノズル３０８が円環状のスリットになっており、溶融金
属液滴がアーク点３０９で生成される。このアーク点３
０９は、ノズル３０５から噴出した円錐状収束気流３０
６に内包されている。液滴は、この円錐状収束気流３０
６に吸い込まれて粉砕されて分散する。そして、冷却さ
れながら溶射対象である鋼材３０７に到達して急冷され
る。したがって、鋼材３０７に極端な熱影響を与えるこ
とがない。After the above pretreatment, thermal spraying (step 2)
05). FIG. 3 shows an embodiment of an arc spray gun for room temperature metal spraying for performing this metal spraying. As shown in FIG. 3, the metal wire 30 connected to the AC power supply 301
2 and 303 are arc-melted at the tip of a gun 304, and are sprayed onto a steel material 307 by an air current 306 from a cone-shaped air nozzle 305. That is, the nozzle 308 of the thermal spray gun 304 is an annular slit, and a molten metal droplet is generated at the arc point 309. This arc point 3
09 is a conical convergent airflow 30 ejected from the nozzle 305.
6 is included. The droplets converge on this conical convergent airflow 30
6 to be crushed and dispersed. Then, while cooling, it reaches the steel material 307 to be sprayed and is rapidly cooled. Therefore, there is no extreme thermal effect on the steel material 307.
【００１５】亜鉛とアルミニウムの線材を、例えば、体
積比１：１、質量比７２：２８の割合で同時に吹き付け
ることにより、亜鉛とアルミニウムの溶融された微粒子
が重なり合った複合金属溶射膜、すなわち擬合金として
溶射層を形成することができる。溶射後の膜厚は、最低
でも７０μｍ必要であり、沿岸地域等の過酷な状況で
は、状況に応じさらに膜厚を増す。By simultaneously spraying a wire of zinc and aluminum at a ratio of, for example, 1: 1, and a mass ratio of 72:28, a composite metal sprayed film in which molten fine particles of zinc and aluminum overlap, ie, a pseudo alloy To form a sprayed layer. The film thickness after thermal spraying needs to be at least 70 μm, and in a severe situation such as a coastal area, the film thickness is further increased according to the situation.
【００１６】溶射後、封孔処理（工程２０６）を行う。
例えば、ブチラール樹脂系、ウレタン樹脂系、フッ素樹
脂系、アクリルシリコン樹脂系等の封孔処理剤を１５０
ｇ／ｍ2〜２５０ｇ／ｍ2、好適には２００ｇ／ｍ2塗布
する。そして、最終的な検査（工程２０７）を行い、膨
れ、剥がれ、剥離、その他の欠陥がないことを確認す
る。また、最低膜厚が確保されていることを確認する。
表面粗さは、所定の摩擦力を得るために、Ｒｙ７０μｍ
以上とする。ここで、Ｒｙとは凹凸の最大高さである。After the thermal spraying, a sealing process (step 206) is performed.
For example, a butyral resin-based, urethane resin-based, fluorine resin-based, acrylic silicone resin-based
g / m 2 ~250g / m 2 , preferably 200 g / m 2 is applied. Then, a final inspection (step 207) is performed to confirm that there is no swelling, peeling, peeling or other defects. Also, make sure that the minimum film thickness is secured.
The surface roughness is Ry 70 μm in order to obtain a predetermined frictional force.
Above. Here, Ry is the maximum height of the unevenness.
【００１７】[0017]
【実施例】実施例１ 鋼材の全長にわたって付着物を除去し、図２のフロー図
に従って、常温金属溶射処理した。粗面形成材としてエ
ポキシ樹脂系粗面形成材を用い、１００ｇ／ｍ 2の割合
でエアースプレーにて吹き付けた。Ｓｍ／Ｒｚ比を３と
した。【Example】Example 1 Removal of deposits over the entire length of the steel material
According to the above, room temperature metal spraying treatment was performed. D as rough surface forming material
100g / m using a oxy resin-based rough surface forming material TwoPercentage
And sprayed with an air spray. Sm / Rz ratio of 3
did.
【００１８】そして、以下の溶射条件で、亜鉛／アルミ
ニウム擬合金を溶射した。 １．溶射装置：ＭＳ２９６Ａｚ型溶射装置。 ２．溶射用線材（１．３ｍｍφ）： 亜鉛・アルミニウムの準地金を溶射用として作製したも
のを用いた。 ３．溶射条件： １次電圧：２００Ｖ ２次電圧：１５〜１８Ｖ 電流：２００〜３００Ａ 空気圧：６ｋｇ／ｃｍ2以上に保持した。 膜厚：１００μｍ以上となるようにした。 搬線速度：１０ｍ／ｍｉｎ程度に保持した。 ４．溶射距離：鋼材の処理面から２７ｃｍとした。Then, the zinc / aluminum pseudo alloy was sprayed under the following spraying conditions. 1. Thermal spraying device: MS296Az type thermal spraying device. 2. Spray wire (1.3mmφ): Zinc / aluminum quasi-metal was used for thermal spraying. 3. Thermal spraying conditions: Primary voltage: 200 V Secondary voltage: 15 to 18 V Current: 200 to 300 A Air pressure: Maintained at 6 kg / cm 2 or more. Film thickness: 100 μm or more. Carrying speed: maintained at about 10 m / min. 4. Thermal spraying distance: 27 cm from the treated surface of the steel material.
【００１９】溶融亜鉛メッキした後、ブラスト等によっ
て表面粗度５０Ｓとした添板を作製した。上記鋼材の接
合部において、この添板との間ですべり係数μを求めた
ところ０．４５９μであった。所望のすべり係数を得る
ことができた。After hot-dip galvanizing, a base plate having a surface roughness of 50 S was produced by blasting or the like. The slip coefficient μ between the steel plate and the attachment plate was 0.459 μ. The desired slip coefficient could be obtained.
【００２０】実施例２ 実施例１と同様の鋼材を作製した。実施例１の鋼材と同
様の金属溶射処理を行った添板を作製した。上記鋼材の
接合部において、この添板との間ですべり係数μを求め
たところ０．５０９μであった。所望のすべり係数を得
ることができた。 Example 2 The same steel material as in Example 1 was produced. A base plate subjected to the same metal spraying treatment as the steel material of Example 1 was produced. The slip coefficient μ between the steel plate and the attachment plate was 0.509 μ. The desired slip coefficient could be obtained.
【００２１】[0021]
【発明の効果】上記したところから明らかなように、本
発明によれば、鋼材の接合部における摩擦力を確保しつ
つ、鋼材の接合部における表面処理を可能とした鋼材の
接合構造が提供される。As is apparent from the above description, according to the present invention, there is provided a joint structure of steel materials capable of performing a surface treatment at the joint portions of steel materials while securing a frictional force at the joint portions of steel materials. You.
【図１】本発明に係る鋼材の接合構造の一実施の形態を
説明する断面図である。FIG. 1 is a cross-sectional view illustrating an embodiment of a joint structure for steel materials according to the present invention.
【図２】本発明に係る鋼材の接合構造で採用される金属
溶射層の形成方法について、その一実施の形態を説明す
るフロー図である。FIG. 2 is a flowchart illustrating an embodiment of a method for forming a metal sprayed layer employed in the steel material joining structure according to the present invention.
【図３】ＭＳ工法（常温金属溶射）用アーク溶射ガンの
一実施の形態を説明する概念図である。FIG. 3 is a conceptual diagram illustrating an embodiment of an arc spray gun for an MS method (normal temperature metal spraying).
１，２ 添板 ３，４ 鋼材 ５，６ 接合部 ２０１〜２０７ 工程 ３０１ 交流電源 ３０２，３０３ 金属線材 ３０４ 溶射ガン ３０５ エアノズル ３０６ 気流 ３０７ 鋼材 ３０８ ノズル ３０９ アーク点 1, 2 Base plate 3, 4 Steel 5, 6 Joint 201-207 Process 301 AC power supply 302, 303 Metal wire 304 Thermal spray gun 305 Air nozzle 306 Air flow 307 Steel 308 Nozzle 309 Arc point
Claims (6)
て接合するようにした鋼材の接合構造において、鋼材の
接合部に金属溶射層を設け、該金属溶射層を設けた上記
鋼材の接合部同士を表面摩擦層を設けた添板で接合して
なることを特徴とする鋼材の接合構造。1. A joint structure for a steel material in which steel materials are joined to each other at a joint portion of the steel material by a base plate, wherein a metal sprayed layer is provided at the joint portion of the steel material, and the steel material provided with the metal sprayed layer is joined. A joining structure of steel materials, wherein the parts are joined by a base plate provided with a surface friction layer.
あることを特徴とする請求項１の鋼材の接合構造。2. The joint structure for steel materials according to claim 1, wherein the surface friction layer of the base plate is a metal sprayed layer.
が、常温金属溶射によって形成された金属溶射層である
ことを特徴とする請求項１又は２の鋼材の接合構造。3. The joint structure for steel materials according to claim 1, wherein the metal sprayed layer of the joint portion of the steel material or the auxiliary plate is a metal sprayed layer formed by room-temperature metal spraying.
金属めっき層の上に設けた金属溶射層であることを特徴
とする請求項１〜３のいずれかの鋼材の接合構造。4. The joint structure for steel materials according to claim 1, wherein the metal sprayed layer at the joint portion of the steel material is a metal sprayed layer provided on a hot-dip metal plating layer.
の線材を、同時に吹き付けることにより、亜鉛とアルミ
ニウムの溶融された微粒子が重なり合った複合金属溶射
層であることを特徴とする請求項１〜４のいずれかの鋼
材の接合構造。5. The composite metal sprayed layer according to claim 1, wherein said metal sprayed layer is a composite metal sprayed layer in which zinc and aluminum melted fine particles are overlapped by simultaneously spraying wires of zinc and aluminum. Any one of steel joint structure.
層であることを特徴とする請求項１〜５のいずれかの鋼
材の接合構造。6. The joint structure for a steel material according to claim 1, wherein the surface friction layer of the base plate is a molten metal plating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000142789A JP3490955B2 (en) | 2000-05-16 | 2000-05-16 | Steel joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000142789A JP3490955B2 (en) | 2000-05-16 | 2000-05-16 | Steel joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001323360A true JP2001323360A (en) | 2001-11-22 |
| JP3490955B2 JP3490955B2 (en) | 2004-01-26 |
Family
ID=18649695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000142789A Expired - Lifetime JP3490955B2 (en) | 2000-05-16 | 2000-05-16 | Steel joint structure |
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| Country | Link |
|---|---|
| JP (1) | JP3490955B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007090395A (en) * | 2005-09-29 | 2007-04-12 | Jfe Steel Kk | Nozzle and cooling apparatus for hot rolled coil |
| JP2008138264A (en) * | 2006-12-04 | 2008-06-19 | Sumitomo Metal Ind Ltd | Friction-bonded structure with high-strength bolt |
| JP2009121603A (en) * | 2007-11-15 | 2009-06-04 | Nippon Steel Corp | High strength bolt frictional joining structure and forming method of metal thermal spraying layer in high strength bolt frictional joining structure |
| JP2009270147A (en) * | 2008-05-02 | 2009-11-19 | Yamada Kinzoku Boshoku Kk | Method for forming sprayed coating for sliding prevention |
| JP2011099144A (en) * | 2009-11-06 | 2011-05-19 | Kawada Kogyo Kk | Long-term rust-preventive joint structure, method for manufacturing bolt used therefor and construction method |
-
2000
- 2000-05-16 JP JP2000142789A patent/JP3490955B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007090395A (en) * | 2005-09-29 | 2007-04-12 | Jfe Steel Kk | Nozzle and cooling apparatus for hot rolled coil |
| JP4586699B2 (en) * | 2005-09-29 | 2010-11-24 | Ｊｆｅスチール株式会社 | Hot rolled coil cooling device |
| JP2008138264A (en) * | 2006-12-04 | 2008-06-19 | Sumitomo Metal Ind Ltd | Friction-bonded structure with high-strength bolt |
| JP2009121603A (en) * | 2007-11-15 | 2009-06-04 | Nippon Steel Corp | High strength bolt frictional joining structure and forming method of metal thermal spraying layer in high strength bolt frictional joining structure |
| JP2009270147A (en) * | 2008-05-02 | 2009-11-19 | Yamada Kinzoku Boshoku Kk | Method for forming sprayed coating for sliding prevention |
| JP2011099144A (en) * | 2009-11-06 | 2011-05-19 | Kawada Kogyo Kk | Long-term rust-preventive joint structure, method for manufacturing bolt used therefor and construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3490955B2 (en) | 2004-01-26 |
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