JP2820649B2 - Fireproof coating method for steel materials - Google Patents
Fireproof coating method for steel materialsInfo
- Publication number
- JP2820649B2 JP2820649B2 JP7295502A JP29550295A JP2820649B2 JP 2820649 B2 JP2820649 B2 JP 2820649B2 JP 7295502 A JP7295502 A JP 7295502A JP 29550295 A JP29550295 A JP 29550295A JP 2820649 B2 JP2820649 B2 JP 2820649B2
- Authority
- JP
- Japan
- Prior art keywords
- metal pin
- steel material
- steel
- tip
- welding
- 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.)
- Expired - Fee Related
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建造物の構造用鉄
鋼材を無機繊維を主材とする耐火材で被覆する耐火被覆
工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory coating method for coating a structural steel material of a building with a refractory material mainly composed of inorganic fibers.
【０００２】[0002]
【従来の技術】従来、建造物の梁や柱などの構造用鉄鋼
材を無機繊維を主材とする耐火材で被覆する耐火被覆工
法として、鉄鋼材表面に予め金属製のピンやスタッドボ
ルト等の棒状部材を固定し、これに耐火材を挿し通して
止めるだけの簡単な工法が行われていた。2. Description of the Related Art Conventionally, as a fire-resistant coating method for coating a structural steel material such as a beam or a column of a building with a fire-resistant material mainly composed of inorganic fibers, a metal pin or stud bolt or the like is previously applied to the surface of the steel material. A simple construction method has been performed in which the rod-shaped member is fixed, and a refractory material is inserted through the rod-shaped member and stopped.
【０００３】例えば、図１〜図３に示すように、鉄鋼材
１に金属製のピン３を溶接ガンにより溶接し、次に無機
繊維を主体とする耐火材２をピン３に押し当てながら挿
し込み、ピン３の先端に座金４を挿通した後、ピン３の
先端部を折り曲げて耐火材２を固定していた。また、ピ
ンの代わりにスタッドボルトを使用して、図４のごとく
スタッドボルト５に座金４を螺合することにより耐火材
２を固定することも行われていた。[0003] For example, as shown in FIGS. 1 to 3, a metal pin 3 is welded to a steel material 1 by a welding gun, and then a refractory material 2 mainly composed of inorganic fibers is inserted while being pressed against the pin 3. After inserting the washer 4 into the tip of the pin 3, the tip of the pin 3 was bent to fix the refractory material 2. Further, a stud bolt is used in place of the pin, and the washer 4 is fixed to the stud bolt 5 by screwing the washer 4 as shown in FIG.
【０００４】しかし、鉄鋼材にピンを溶接する際に、鉄
鋼材の表面に酸化膜や塗装膜が存在する場合には、それ
らが絶縁層となって金属製のピン等の溶接が不可能とな
るので、鉄鋼材表面の酸化膜や塗装膜をグラインダー等
で事前に取り除いておく必要がある。ところが、この酸
化膜や塗装膜の研磨除去作業には多大な時間と労力を要
するうえ、粉塵発生のため作業環境を悪化させる欠点が
あった。[0004] However, when an oxide film or a paint film is present on the surface of the steel material when welding the pin to the steel material, it becomes impossible to weld a metal pin or the like as an insulating layer. Therefore, it is necessary to remove an oxide film and a coating film on the surface of the steel material with a grinder or the like in advance. However, the work of polishing and removing the oxide film and the paint film requires a great deal of time and labor, and also has the drawback that the working environment is deteriorated due to generation of dust.
【０００５】また、耐火材を当て付ける前に鉄鋼材表面
のピン打ち箇所のチェックが必要なうえ、一旦ピン等を
溶接してしまうと耐火材の位置ズレが生じても簡単には
直せない欠点があった。更に、ピン等を溶接した後から
耐火材を挿し込んで鉄鋼材を被覆する先付け工法である
ため、耐火材の抜け落ちを防止するための座金状の係止
部を有するピン等を使用できず、耐火材を挿し込んだ後
に更にピン等に座金を取り付ける必要があり、極めて非
能率的であった。In addition, it is necessary to check the location of the pin on the surface of the steel material before applying the refractory material, and once the pins and the like are welded, the position of the refractory material cannot be easily fixed even if the displacement occurs. was there. Furthermore, since it is a pre-installation method in which a refractory material is inserted after welding the pins and the like to cover the steel material, a pin or the like having a washer-shaped locking portion for preventing the refractory material from falling off cannot be used, After inserting the refractory material, it was necessary to further attach a washer to a pin or the like, which was extremely inefficient.
【０００６】[0006]
【発明が解決しようとする課題】上記した従来の工法に
代えて、先に耐火材を鉄鋼材に当て付け、その後耐火材
の外側から挿し込んだ金属製のピンを、溶接ガンで鉄鋼
材に溶接して耐火材を固定する方法、即ち後付け工法が
考えられる。この後付け工法によれば、座金状の係止部
を有するピンを使用することが可能となり、後から座金
で耐火材を止める作業をなくすことができる。In place of the above-mentioned conventional method, a refractory material is first applied to a steel material, and a metal pin inserted from the outside of the refractory material is then applied to the steel material by a welding gun. A method of fixing the refractory material by welding, that is, a retrofitting method is conceivable. According to this retrofitting method, it is possible to use a pin having a washer-shaped locking portion, and it is possible to eliminate the work of stopping the refractory material with the washer later.
【０００７】しかしながら、かかる後付け工法において
も、鉄鋼材の表面に酸化膜や塗装膜が存在する場合に
は、この酸化膜や塗装膜を研磨除去しない限り、金属製
のピンを鉄鋼材に溶接することができない点に変わりは
ない。However, even in such a post-installation method, when an oxide film or a paint film is present on the surface of the steel material, the metal pin is welded to the steel material unless the oxide film or the paint film is removed by polishing. You can't do that.
【０００８】本発明は、かかる従来の事情に鑑み、鉄鋼
材表面に酸化膜や塗装膜があっても予め研磨除去する必
要がなく、その鉄鋼材に耐火材を当て付けた後、その外
側から金属ピンを挿し込んで溶接ガンで溶接するだけで
よく、作業能率に優れた耐火被覆工法を提供することを
目的とするものである。In view of the above-mentioned circumstances, the present invention does not require polishing and removing in advance even if an oxide film or a coating film is present on the surface of a steel material. It is an object of the present invention to provide a refractory coating method excellent in work efficiency by simply inserting a metal pin and welding with a welding gun.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するた
め、本発明が提供する鉄鋼材の耐火被覆工法は、無機繊
維を主材とした耐火材で鉄鋼材を被覆する耐火被覆工法
において、鉄鋼材に耐火材を当て付け、この耐火材に挿
し込んだ金属ピンを鉄鋼材表面に対して傾斜させた状態
で電源を入れた状態の溶接ガンにより鉄鋼材表面に押し
付けることによって、金属ピンの先端で鉄鋼材表面の酸
化膜あるいは塗装膜を破壊すると同時に溶接を行い、全
ての金属ピンを鉄鋼材表面に傾斜させて溶接することを
特徴とするものである。Means for Solving the Problems In order to achieve the above object, the present invention provides a method for coating a steel material with a fire-resistant material, which comprises coating a steel material with a fire-resistant material mainly composed of inorganic fibers. The refractory material is applied to the material, and the metal pin inserted into the refractory material is inclined to the steel material surface and pressed against the steel material surface by the welding gun with the power turned on. Accordingly, performed simultaneously welded to destroy the oxidized film or a coating film of the steel material surface at the tip of the metal pins, the total
A metal pin of Te is characterized in that the welding is inclined to the steel material surface.
【００１０】本発明では、通常のごとく金属ピンを鉄鋼
材表面に対して直角に押し当てるのではなく、鉄鋼材表
面に対して傾斜をつけた状態とし、その金属ピンの後端
を電源を入れた状態の溶接ガンで押し付けることによっ
て、金属ピンの先端が鉄鋼材表面の酸化膜や塗装膜を破
壊して鉄鋼材に達する。従って、金属ピンの先端が鉄鋼
材に達すると同時に溶接を行うので、確実且つ容易に、
しかも位置ずれなく金属ピンを鉄鋼材に溶接固定するこ
とができる。In the present invention, instead of pressing the metal pin at right angles to the steel material surface as usual, the metal pin is inclined with respect to the steel material surface, and the rear end of the metal pin is turned on. The metal pin tip breaks the oxide film and paint film on the steel surface by pressing
Reach the steel material was corrupted. Therefore, welding is performed at the same time as the tip of the metal pin reaches the steel material, so that it can be reliably and easily performed .
In addition, the metal pin can be fixed to the steel material by welding without displacement .
【００１１】[0011]
【発明の実施の形態】従来の鉄鋼材の耐火被覆工法にお
いては、図５に示すように、鉄鋼材１に対して金属ピン
１０を殆ど直角に、即ち鉄鋼材１の表面からの角度を殆
ど９０°にして溶接固定していた。この金属ピンの溶接
角度については、最近提案された後付け工法の１種であ
る特開平１−２９０８４７号公報及び特開平２−３０８
０４６号公報に記載の方法も同様である。DESCRIPTION OF THE PREFERRED EMBODIMENTS In a conventional refractory coating method for a steel material, as shown in FIG. 5, the metal pin 10 is almost perpendicular to the steel material 1, that is, the angle from the surface of the steel material 1 is almost changed. It was fixed at 90 ° by welding. Regarding the welding angle of the metal pin, JP-A-1-290847 and JP-A-2-308, which are one of the recently proposed retrofitting methods.
No. 046, the same applies.
【００１２】即ち、これらの公報記載の方法では、図５
のごとくまず鉄鋼材１に耐火材２を当て付け、次にこの
耐火材２の外側から係止部１１付きの金属ピン１０を鉄
鋼材１の表面に対して直角に挿し込み、この状態で溶接
ガン８の操作により金属ピン１０を押圧回転させるか又
はハンマー等で押打力を加えることによって、金属ピン
１０の先端を鉄鋼材１の表面の酸化膜又は塗装膜６を通
して溶接可能な部分まで侵入させ、次に溶接ガン８によ
り溶接して金属ピン１０を鉄鋼材１に対して直角に固定
するのである。That is, in the methods described in these publications, FIG.
First, the refractory material 2 is applied to the steel material 1, and then the metal pin 10 with the locking portion 11 is inserted from the outside of the refractory material 2 at right angles to the surface of the steel material 1, and welding is performed in this state. By pressing and rotating the metal pin 10 by operating the gun 8 or by applying a pressing force with a hammer or the like, the tip of the metal pin 10 penetrates to the weldable portion through the oxide film or the coating film 6 on the surface of the steel material 1. Then, the metal pin 10 is fixed at right angles to the steel material 1 by welding with a welding gun 8.
【００１３】これに対して本発明では、図６に示すよう
に、鉄鋼材１に耐火材２を当て付けた後、この耐火材２
に挿し込んだ金属ピン１０を鉄鋼材１の表面に対して直
角とせず、傾斜角θで傾斜させる。即ち、金属ピン１０
を傾斜角θ（３０〜８５°）で傾斜させて耐火材２に挿
し込むか、耐火材２に挿し込んだ後に傾斜角θに傾斜さ
せるのである。On the other hand, in the present invention, as shown in FIG. 6, after a refractory material 2 is applied to a steel
The metal pin 10 inserted into the steel material 1 is not inclined at a right angle to the surface of the steel material 1 but is inclined at an inclination angle θ. That is, the metal pin 10
Is inclined at an inclination angle θ (30 to 85 °) and inserted into the refractory material 2 or inserted into the refractory material 2 and then inclined to the inclination angle θ.
【００１４】次に、この状態で、電源を入れた溶接ガン
８により金属ピン１０の後端の係止部１１を押して鉄鋼
材１に押し付けるだけで、鉄鋼材１に対して傾斜してい
る金属ピン１０の先端が鉄鋼材１の表面上を若干移動
し、鉄鋼材１の表面に存在する酸化膜あるいは塗装膜６
が簡単に掻き取られるように破壊される。その結果、金
属ピン１０の先端が鉄鋼材１に達すると同時に溶接する
ことができ、簡単な操作で極めて能率的に耐火材２を被
覆固定することが可能となる。Next, in this state, by simply pressing the locking portion 11 at the rear end of the metal pin 10 with the welding gun 8 turned on and pressing it against the steel material 1, the metal inclined with respect to the steel material 1 can be obtained. The tip of the pin 10 slightly moves on the surface of the steel material 1, and an oxide film or a coating film 6 existing on the surface of the steel material 1.
Is broken so that it can be easily scraped. As a result, welding can be performed at the same time when the tip of the metal pin 10 reaches the steel material 1, and the refractory material 2 can be covered and fixed extremely efficiently with a simple operation.
【００１５】特に金属ピンの鉄鋼材表面からの傾斜角θ
を３０°〜８５°の範囲とすることにより、鉄鋼材表面
に存在する酸化膜や塗装膜を確実に破壊することができ
る。しかし、この傾斜角θが小さい場合は斜めに挿し込
まれた金属ピンの後端の係止部により耐火材に凹部が形
成され、外観が悪くなる。また、傾斜角θが大きくな
り、直角に近付くに従って酸化膜又は塗装膜の破壊に強
い押圧力が必要となる。従って、これらの事情を考慮す
れば、上記金属ピンの傾斜角θは４５°〜８０°の範囲
が一層好ましい。In particular, the inclination angle θ of the metal pin from the surface of the steel material
Is in the range of 30 ° to 85 °, the oxide film or the coating film present on the surface of the steel material can be reliably destroyed. However, when the inclination angle θ is small, a concave portion is formed in the refractory material by the locking portion at the rear end of the metal pin inserted obliquely, and the appearance is deteriorated. Further, as the inclination angle θ increases and approaches a right angle, a pressing force that is strong against the destruction of the oxide film or the coating film is required. Therefore, in consideration of these circumstances, the inclination angle θ of the metal pin is more preferably in the range of 45 ° to 80 °.
【００１６】金属ピンの先端部の形状については、球状
のように滑らかで酸化膜や塗装膜を掻き取ることができ
ない形状は不適当であるが、通常の金属ピンは先端部が
尖っているなど滑らかではないから、本方法での使用に
支障はない。例えば、図７に示すような鋭く尖った針状
の先端部１０ａ、図８のような刃状の先端部１０ｂ、図
９のような環状凸部を介して針状に形成した先端部１０
ｃ、先端を切断しただけの円柱状の先端部１０ｄなどを
有する金属ピンが通常使用される。また、金属ピン１０
の後端には、耐火材の抜けを防止するため座金状その他
各種の形状の係止部１１を備えることが好ましい。With respect to the shape of the tip of the metal pin, it is inappropriate to use a shape such as a sphere which is so smooth that the oxide film or the coating film cannot be scraped off. However, a normal metal pin has a sharp tip. Since it is not smooth, it does not hinder its use in this method. For example, a sharply pointed needle-like tip 10a as shown in FIG. 7, a blade-like tip 10b as shown in FIG. 8, and a needle-like tip 10 formed through an annular protrusion as shown in FIG.
c, a metal pin having a cylindrical tip 10d whose tip is merely cut is usually used. In addition, the metal pin 10
The rear end is preferably provided with a locking portion 11 having a washer shape or other various shapes to prevent the refractory material from coming off.
【００１７】尚、金属ピンの先端部が針状又は刃状であ
る場合、例えば図１１に示すように針状の先端部１０ａ
の側面が鉄鋼材の表面１ａに平行になると、上記した傾
斜角θに拘らず表面１ａの酸化膜や塗装膜を掻き取るこ
とが出来なくなるので、その場合の金属ピン１０の鉄鋼
材表面１ａからの傾斜角θは、金属ピン１０の先端角度
αの１／２より大きな角度とする必要がある。When the tip of the metal pin is needle-like or blade-like, for example, as shown in FIG.
Is parallel to the surface 1a of the steel material, the oxide film or the coating film on the surface 1a cannot be scraped irrespective of the above-mentioned inclination angle θ. Is required to be larger than 1/2 of the tip angle α of the metal pin 10.
【００１８】金属ピンを溶接するに際しては、溶接ガン
に金属ピンをセットした状態で耐火材に挿し込み、酸化
膜あるいは塗装膜を掻き取った後、溶接ガンの電源を入
れて溶接するという手順を取っても良いが、目標とする
溶接箇所に位置ずれが生じることがあるので、溶接ガン
の電源を入れた状態で金属ピンを鉄鋼材に押し付け、酸
化膜や塗装膜の掻き取りと同時に溶接の操作を行うこと
が望ましい。このように溶接ガンの電源を入れた状態で
操作することにより、酸化膜や塗装膜が掻き取られた瞬
間に溶接が行われるので、位置ずれによる溶接の失敗が
無くなるうえ、作業能率を更に向上させることができ
る。When welding a metal pin, a procedure is adopted in which the metal pin is set in a welding gun, inserted into a refractory material, an oxide film or a coating film is scraped off, and the welding gun is turned on to perform welding. Although it may be removed, the position of the target welding spot may be misaligned, so press the metal pin against steel while the power of the welding gun is turned on, scrape the oxide film and paint film, and perform welding at the same time. It is desirable to perform the operation. By operating the welding gun with the power turned on in this way, welding is performed at the moment the oxide film or paint film is scraped off, eliminating welding failure due to misalignment and further improving work efficiency Can be done.
【００１９】また、金属ピンは鉄又は鋼製であるから、
焼きなまし処理を施した金属ピンを使用すれば、鉄鋼材
表面からの傾斜角θを３０°〜８５°として溶接した
後、鉄鋼材表面に対して金属ピンを直角に手直しするこ
とが可能である。この場合には、金属ピンの後端の係止
部が耐火材を斜めに押えることによって生じる凹部を完
全になくし、耐火材表面の外観を良好に保つことができ
る。Further, since the metal pin is made of iron or steel,
If the metal pin subjected to the annealing treatment is used, it is possible to adjust the metal pin at a right angle to the steel material surface after welding with the inclination angle θ from the steel material surface being 30 ° to 85 °. In this case, it is possible to completely eliminate the concave portion caused by the locking portion at the rear end of the metal pin obliquely pressing the refractory material, and to keep the appearance of the refractory material surface good.
【００２０】[0020]
【実施例】図１２〜図１３を参照して、本発明による耐
火被覆工法を詳しく説明する。この実施例では、Ｈ形梁
鉄骨からなる鉄鋼材１の表面に、無機質繊維を主材とし
てブランケット状に形成した耐火材２を、図１２に示す
各箇所で金属ピン１０により固定して被覆する方法を説
明する。尚、図１２の７は天井スラブである。DESCRIPTION OF THE PREFERRED EMBODIMENTS The fireproof coating method according to the present invention will be described in detail with reference to FIGS. In this embodiment, a refractory material 2 made of inorganic fibers as a main material and formed in a blanket shape is fixed on a surface of a steel material 1 made of an H-shaped beam steel frame at each location shown in FIG. The method will be described. In addition, 7 of FIG. 12 is a ceiling slab.
【００２１】まず、鉄鋼材１の表面のうち、図１２に示
すように、天井スラブ７が施されていない表面に耐火材
２を巻き付け、次に図１３に示すように磁石型チャック
を有する溶接ガン８の先端に金属ピン１０の後端の係止
部１１をセットし、溶接ガン８の電源スイッチを入れた
状態で、鉄鋼材１のＨ形梁鉄骨の内側表面に向かって、
該表面からの傾斜角θが３０°となるように金属ピン１
０を傾けて耐火材２に挿し込んだ。First, the refractory material 2 is wound around the surface of the steel material 1 on which the ceiling slab 7 is not applied, as shown in FIG. 12, and then, as shown in FIG. With the locking portion 11 at the rear end of the metal pin 10 set at the tip of the gun 8, and with the power switch of the welding gun 8 turned on, toward the inner surface of the H-shaped steel frame of the steel material 1,
The metal pin 1 is set so that the inclination angle θ from the surface is 30 °.
It was inserted into the refractory material 2 at an angle of 0.
【００２２】この傾斜角θ＝３０°を保持し且つ溶接ガ
ン８の電源を入れたまま、溶接ガン８により金属ピン１
０を鉄鋼材１に強く押し付けたところ、簡単に溶接する
ことができた。これは、鉄鋼材１に金属ピン１０を斜め
に強く押圧することにより、金属ピン１０の先端で表面
の酸化膜あるいは塗装膜６の一部が掻き取られ、通電可
能な溶接部が現れたためである。While maintaining the inclination angle θ = 30 ° and turning on the power of the welding gun 8, the metal pin 1 is
When 0 was pressed strongly against the steel material 1, welding was easily performed. This is because the metal pin 10 is obliquely and strongly pressed against the steel material 1 so that the oxide film on the surface or a part of the coating film 6 is scraped off at the tip of the metal pin 10, and a welded portion that can conduct electricity appears. is there.
【００２３】また、焼きなまし処理した金属ピンを用い
ることにより、溶接後に金属ピンの角度を鉄鋼材表面に
対して直角に手直しすることができた。例えば図１２に
示すように、鉄鋼材１のＨ形梁鉄骨の天井スラブ７と反
対側の外側表面で、耐火材２が接して施されている外側
表面に向かって、該表面からの傾斜角θが３０°となる
ように金属ピン１０を傾けて耐火材２に挿し込み、上記
と同様に傾斜して溶接した後、金属ピン１０を強く押し
曲げることで鉄鋼材１に対して直角に直すことができ
た。Further, by using the annealed metal pin, the angle of the metal pin can be adjusted at right angles to the surface of the steel material after welding. For example, as shown in FIG. 12, the inclination angle from the outer surface of the steel material 1 on the outer surface opposite to the ceiling slab 7 of the H-beam steel frame toward the outer surface on which the refractory material 2 is in contact. The metal pin 10 is tilted and inserted into the refractory material 2 so that θ becomes 30 °, and the metal pin 10 is tilted and welded in the same manner as described above. I was able to.
【００２４】[0024]
【発明の効果】本発明によれば、鉄鋼材表面に酸化膜や
塗装膜があっても事前にグラインダー等で研磨除去する
必要がなく、そのままの鉄鋼材に耐火材を当て付け、そ
の外側から挿し込んだ金属ピンの先端で酸化膜や塗装膜
を簡単に破壊でき、金属ピンの先端が鉄鋼材に達すると
同時に溶接を行うことができる。従って、鉄鋼材への耐
火材の被覆取付作業を極めて能率良く行うことができる
うえ、金属ピンを位置ずれなく鉄鋼材に溶接でき、しか
も通常の溶接ガンのみで実施でき、溶接ガンを回転させ
る等の余分な操作を行う必要もない。According to the present invention, even if there is an oxide film or a paint film on the surface of the steel material, it is not necessary to grind and remove the steel material in advance with a grinder or the like. Oxide film or paint film at the tip of the inserted metal pin
Can be easily broken, and when the tip of the metal pin reaches the steel material
Welding can be performed at the same time. Therefore, resistance to steel materials
It is possible to perform the coating work of fire material extremely efficiently
In addition, metal pins can be welded to steel without displacement,
Can be performed only with a normal welding gun.
There is no need to perform extra operations such as
【図１】従来の先付け工法により鉄鋼材にピンを溶接し
た状態を示す断面図である。FIG. 1 is a cross-sectional view showing a state where a pin is welded to a steel material by a conventional tipping method.
【図２】図１の溶接したピンに耐火材を挿し込んだ状態
を示す断面図である。FIG. 2 is a cross-sectional view showing a state in which a refractory material has been inserted into the welded pins of FIG. 1;
【図３】図２のピンに挿し込んだ耐火材を座金で固定し
た状態を示す断面図である。FIG. 3 is a cross-sectional view showing a state in which the refractory material inserted into the pin of FIG. 2 is fixed with a washer.
【図４】従来の先付け工法によりスタッドボルトに螺合
した座金で耐火材を固定した状態を示す断面図である。FIG. 4 is a cross-sectional view showing a state in which a refractory material is fixed by a washer screwed to a stud bolt by a conventional tipping method.
【図５】従来の方法により金属ピンを溶接する状態を示
す断面図である。FIG. 5 is a cross-sectional view showing a state where a metal pin is welded by a conventional method.
【図６】本発明の方法により金属ピンを鉄鋼材に対し傾
斜させて溶接する状態を示す断面図である。FIG. 6 is a cross-sectional view showing a state in which a metal pin is inclined and welded to a steel material by the method of the present invention.
【図７】針状の先端部を有する金属ピンの斜視図であ
る。FIG. 7 is a perspective view of a metal pin having a needle-like tip.
【図８】刃状の先端部を有する金属ピンの斜視図であ
る。FIG. 8 is a perspective view of a metal pin having a blade-shaped tip.
【図９】環状凸部の先に針状の先端部を有する金属ピン
の斜視図である。FIG. 9 is a perspective view of a metal pin having a needle-like tip portion at the tip of an annular convex portion.
【図１０】円柱状の先端部を有する金属ピンの斜視図で
ある。FIG. 10 is a perspective view of a metal pin having a cylindrical tip.
【図１１】金属ピンの先端角度と傾斜の関係を説明する
ための側面図である。FIG. 11 is a side view for explaining the relationship between the tip angle and the inclination of the metal pin.
【図１２】実施例においてＨ形梁鉄骨に耐火材を被覆固
定した状態を示す一部を切り欠いた斜視図である。FIG. 12 is a partially cutaway perspective view showing a state in which a refractory material is coated and fixed on an H-shaped beam steel frame in the embodiment.
【図１３】実施例において金属ピンを傾斜させてＨ形梁
鉄骨に溶接する状態を示す断面図である。FIG. 13 is a cross-sectional view showing a state in which a metal pin is inclined and welded to an H-beam steel frame in the embodiment.
１ 鉄鋼材 ２ 耐火材 ３ ピン ４ 座金 ５ スタッドボルト ６ 塗装膜 ７ 天井スラブ ８ 溶接ガン １０ 金属ピン １１ 係止部 DESCRIPTION OF SYMBOLS 1 Steel material 2 Refractory material 3 Pin 4 Washer 5 Stud bolt 6 Painting film 7 Ceiling slab 8 Welding gun 10 Metal pin 11 Locking part
フロントページの続き (56)参考文献 特開 平１−290847（ＪＰ，Ａ) 特開 平２−308046（ＪＰ，Ａ) 特開 昭62−156459（ＪＰ，Ａ) 特開 昭48−17454（ＪＰ，Ａ) 実開 昭62−163206（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) E04B 1/94Continuation of the front page (56) References JP-A-1-290847 (JP, A) JP-A-2-308046 (JP, A) JP-A-62-156459 (JP, A) JP-A-48-17454 (JP) , A) Japanese Utility Model Showa 62-163206 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) E04B 1/94
Claims (3)
被覆する耐火被覆工法において、鉄鋼材に耐火材を当て
付け、この耐火材に挿し込んだ金属ピンを鉄鋼材表面に
対して傾斜させた状態で電源を入れた状態の溶接ガンに
より鉄鋼材表面に押し付けることによって、金属ピンの
先端で鉄鋼材表面の酸化膜あるいは塗装膜を破壊すると
同時に溶接を行い、全ての金属ピンを鉄鋼材表面に傾斜
させて溶接することを特徴とする鉄鋼材の耐火被覆工
法。In a fire-resistant coating method of coating a steel material with a fire-resistant material mainly composed of inorganic fibers, a fire-resistant material is applied to the steel material, and a metal pin inserted into the fire-resistant material is attached to the surface of the steel material. the welding gun while the power in a state of being inclined to be pressed against the steel material surface thus performs simultaneously welded to destroy the oxidized film or a coating film of the steel material surface at the tip of the metal pin, all of the metal pin Inclined on steel surface
A refractory coating method for steel materials, characterized by being welded .
０°〜８５°の範囲であることを特徴とする、請求項１
に記載の鉄鋼材の耐火被覆工法。2. The metal pin has an inclination angle of 3 from the steel surface.
The angle is in the range of 0 ° to 85 °.
4. A method for refractory coating of a steel material according to claim 1.
この金属ピンを鉄鋼材表面に傾斜させて溶接固定した
後、鉄鋼材表面に対して直角に曲げなおすことを特徴と
する、請求項１又は２に記載の鉄鋼材の耐火被覆工法。 3. Use of an annealed metal pin,
This metal pin was welded and fixed by inclining to the steel surface
After that, it is re-bent at right angles to the steel surface.
The refractory coating method for a steel material according to claim 1 or 2, which is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7295502A JP2820649B2 (en) | 1995-11-14 | 1995-11-14 | Fireproof coating method for steel materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7295502A JP2820649B2 (en) | 1995-11-14 | 1995-11-14 | Fireproof coating method for steel materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09137524A JPH09137524A (en) | 1997-05-27 |
| JP2820649B2 true JP2820649B2 (en) | 1998-11-05 |
Family
ID=17821449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7295502A Expired - Fee Related JP2820649B2 (en) | 1995-11-14 | 1995-11-14 | Fireproof coating method for steel materials |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2820649B2 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62156459A (en) * | 1985-12-27 | 1987-07-11 | ニチアス株式会社 | Refractory coating construction method of steel bar |
| JPH0310241Y2 (en) * | 1986-04-05 | 1991-03-14 | ||
| JPH01290847A (en) * | 1988-05-19 | 1989-11-22 | Nichias Corp | Fireproof covering method for steel material |
| JPH0672465B2 (en) * | 1989-05-22 | 1994-09-14 | ニチアス株式会社 | Fireproof coating method for steel materials |
-
1995
- 1995-11-14 JP JP7295502A patent/JP2820649B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09137524A (en) | 1997-05-27 |
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