JP2009174201A - Pin for fixing heat insulation material - Google Patents

Pin for fixing heat insulation material Download PDF

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JP2009174201A
JP2009174201A JP2008014425A JP2008014425A JP2009174201A JP 2009174201 A JP2009174201 A JP 2009174201A JP 2008014425 A JP2008014425 A JP 2008014425A JP 2008014425 A JP2008014425 A JP 2008014425A JP 2009174201 A JP2009174201 A JP 2009174201A
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pin
insulating material
heat insulating
fixing
welding
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Kimio Shinjo
公生 新城
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PIAS HANBAI KK
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PIAS HANBAI KK
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pin for fixing a heat insulation material, which exerts sufficient welding strength by CD welding, and effectively prevents separation at a welding portion. <P>SOLUTION: The pin 10 for fixing a heat insulation material functions to fix the heat insulation material 20 to a support steel product 21 by the CD welding (stud welding of a condenser system), and has a sharp pointed portion 12 at a front end 12 of a slender pin body 11 made of a steel wire, and a large-diameter disk-shaped washer 13 made of a thin steel plate fixed to a rear end thereof. The sharp pointed portion 12 is formed of a tapered welded portion 14 to be welded to the support steel product 21, and an acute-angular and short energization induction portion 15 extended from the welded portion 14, for thrusting a black oxide film and an anti-corrosive coating film of the support steel product 21, and generating sparks. The welded portion 14 is formed like a pyramid or a cone having a vertex angle of about 90 degrees, and the energization induction portion 15 is formed like a pyramid or a cone having an acute vertex angle of about 45 degrees and a short height of about 1 mm. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、鉄骨構造物や機械設備の外面を断熱材で被覆するために使用される断熱材固定用ピンに関するものである。   The present invention relates to a pin for fixing a heat insulating material used for covering an outer surface of a steel structure or mechanical equipment with a heat insulating material.

近年、アスベスト問題から、在来工法で鉄骨構造物の天井やそれを支えるＨ型鋼の梁材及び柱材に断熱材として吹き付けていたアスベストに替わり、グラスウールなどの断熱材で被覆する断熱工法が普及しつつある。   In recent years, due to the asbestos problem, the heat insulation method of covering with a heat insulating material such as glass wool has spread instead of asbestos sprayed as a heat insulating material on the ceiling of steel structures and the H-shaped steel beams and pillars that support it by conventional methods. I am doing.

この場合、図８に示すように、従来よりダクト４の断熱（保温）に用いられていたグラスウール等の断熱材５に、後端部に薄い鋼板からなる大径の円盤状座金２が固着された細長い固定用ピン１を貫通させ、該固定用ピン１先端をダクト（支持鋼材）４表面にＣＤ溶接（コンデンサ方式のスタッド溶接）により固着して前記断熱材５を固定する工法が、そのまま使用されている。この工法に使用される固定用ピン１の先端には、ＣＤ溶接のスパークを誘発させるために突起３が設けられているが、尖ってはいない（図１０（ａ）及び（ｂ）参照）。そのためダクト４表面のゴミや断熱材５そのものが固定用ピン１先端に付着して通電障害を及ぼすことがある。また、グラスウールの断熱材５には、グラスウールの保護及び補強のため薄い布を表面に重ねたものがあり、この場合、上記従来の固定ピン１の先端形状ではこのような保護シートを突き破れず、押し下げるだけで通電の障害となる。   In this case, as shown in FIG. 8, a large-diameter disk-shaped washer 2 made of a thin steel plate is fixed to the heat insulating material 5 such as glass wool, which has been conventionally used for heat insulation (insulation) of the duct 4. The method of fixing the heat insulating material 5 as it is by passing through the long and narrow fixing pin 1 and fixing the tip of the fixing pin 1 to the surface of the duct (support steel material) 4 by CD welding (capacitor type stud welding) is used as it is. Has been. At the tip of the fixing pin 1 used in this construction method, a protrusion 3 is provided for inducing a spark of CD welding, but it is not pointed (see FIGS. 10A and 10B). For this reason, dust on the surface of the duct 4 or the heat insulating material 5 itself may adhere to the tip of the fixing pin 1 and cause an energization failure. Further, the glass wool heat insulating material 5 includes a thin cloth laminated on the surface for protection and reinforcement of the glass wool. In this case, the tip shape of the conventional fixing pin 1 does not break through such a protective sheet. If you push it down, it will hinder energization.

さらに、上記従来の固定用ピン１の先端形状では、黒皮又はその上に防錆塗装を施した支持鋼材に対して、黒皮酸化膜や防錆塗装膜を突き破って通電によるスパークを発生させることができず、ＣＤ溶接によって溶着することが極めて困難である。なお、固定用ピン１を強く押しつけることで通電を確保するため、固定用ピン１には曲げ強度の高い金属線材が用いられているが、このような固定用ピン１に断熱材５の引っ張りによる曲げ応力が作用すると、図９に示すように、その応力は溶接部６に集中して該溶接部６を剥離させ、安定した固着が困難である。   Furthermore, in the tip shape of the conventional fixing pin 1 described above, a spark due to energization is generated by breaking through the black skin oxide film or the antirust coating film on the black skin or the support steel material on which anticorrosion coating is applied. And cannot be welded by CD welding. In order to secure energization by strongly pressing the fixing pin 1, a metal wire having a high bending strength is used for the fixing pin 1, but the heat insulating material 5 is pulled on the fixing pin 1. When bending stress acts, as shown in FIG. 9, the stress concentrates on the welded portion 6 and peels off the welded portion 6, so that stable fixation is difficult.

また、図１１（ａ）に示すように、固定用ピン１の先端部分に釘先のように鋭角の先尖り部７を設けたものは知られている（例えば、特許文献１及び特許文献２参照）。しかし、ＣＤ溶接は、そのコンデンサの蓄電量によって、相当な断面積の溶解や溶接は可能であるが、アーク溶接や抵抗溶接のように通電時間の調整は不可であり、その放電時間が１／１０００秒程度と極端に短いため、軸方向の溶解量は得られにくい。そのため、釘先のような先尖り部７では、図１１（ｂ）に示すように途中までしか溶けず、充分な溶接面積の溶接部６が得られない。したがって、曲げ応力によって容易に剥離するという問題がある。
特開２００４−８２１２７号公報 特開平１０−２４５９０４号公報 Further, as shown in FIG. 11 (a), it is known that the tip portion of the fixing pin 1 is provided with an acute pointed portion 7 like a nail tip (for example, Patent Document 1 and Patent Document 2). reference). However, CD welding can melt and weld a considerable cross-sectional area depending on the amount of electricity stored in the capacitor, but it cannot adjust the energization time like arc welding or resistance welding, and the discharge time is 1 / Since it is extremely short, such as about 1000 seconds, it is difficult to obtain a dissolution amount in the axial direction. Therefore, the pointed portion 7 such as a nail tip melts only halfway as shown in FIG. 11B, and the welded portion 6 having a sufficient welding area cannot be obtained. Therefore, there is a problem that peeling easily occurs due to bending stress.
JP 2004-82127 A Japanese Patent Laid-Open No. 10-245904

本発明は、上記従来の問題点を解決するもので、ＣＤ溶接によって充分な溶接強度が得られ、溶接部の剥離を効果的に防止できる断熱材固定用ピンを提供することを目的とする。また、溶接後に断熱材の引っ張りによりピン本体の溶接部に作用する曲げ応力を軽減させて、該溶接部の剥離防止の効果を一層高めることができる断熱材固定用ピンを提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a pin for fixing a heat insulating material that can obtain sufficient welding strength by CD welding and can effectively prevent peeling of a welded portion. Another object of the present invention is to provide a pin for fixing a heat insulating material that can reduce the bending stress acting on the welded portion of the pin main body by pulling the heat insulating material after welding, and can further enhance the effect of preventing the peeling of the welded portion. To do.

上記目的を達成するために、本発明は、ＣＤ溶接（コンデンサ方式のスタッド溶接）によって断熱材を支持鋼材に固定するためのピンであって、鋼線材からなる細長いピン本体の先端部に先尖り部を有し、後端部に薄い鋼板からなる大径の円盤状座金が固着されている断熱材固定用ピンにおいて、前記先尖り部が、前記支持鋼材に溶接される先すぼまりの溶着部分と、該溶着部分に連続し前記支持鋼材の黒皮酸化膜及び防錆塗料膜を突き破ってスパークを発生させる鋭角で、かつ短い通電誘発部分とで構成されていることを特徴とする。   In order to achieve the above object, the present invention is a pin for fixing a heat insulating material to a supporting steel material by CD welding (capacitor type stud welding), and has a pointed tip at the tip of an elongated pin body made of a steel wire material. In the pin for fixing a heat insulating material having a large-diameter disk-shaped washer made of a thin steel plate at the rear end portion, the pointed portion is welded to a tapered portion welded to the supporting steel material. It is characterized by comprising a portion and a short energization-inducing portion that is continuous with the welded portion and generates a spark by breaking through the black skin oxide film and the rust preventive paint film of the supporting steel material.

前記溶着部分は、頂角が約９０度の角錐状又は円錐状に形成され、前記通電誘発部分は、頂角が約４５度の鋭角で、かつ高さが約１ミリの短い角錐状又は円錐状に形成されていることが好ましい。   The welded portion is formed in a pyramid or conical shape with an apex angle of about 90 degrees, and the energization inducing portion is an acute angle with an apex angle of about 45 degrees and a short pyramid shape or cone with a height of about 1 mm. It is preferable that it is formed in a shape.

また、請求項３〜５に係る発明は、前記先尖り部近傍の前記ピン本体に細軸部が設けられていることを特徴とする。   The inventions according to claims 3 to 5 are characterized in that a thin shaft portion is provided in the pin main body in the vicinity of the pointed portion.

本発明による断熱材固定用ピンは、ピン本体の先端部に設ける前記先尖り部が、前記支持鋼材に溶接される先すぼまりの溶着部分と、該溶着部分に連続し前記支持鋼材の黒皮酸化膜及び防錆塗料膜を突き破ってスパークを発生させる鋭角で、かつ短い通電誘発部分とで構成されていて、特に、前記溶着部分は、頂角が約９０度の角錐状又は円錐状に形成され、前記通電誘発部分は、頂角が約４５度の鋭角で、かつ高さが約１ミリの短い角錐状又は円錐状に形成されているので、前記断熱材表面の保護シートを切断して、前記断熱材を容易に貫通すると共に、鋭角で短い先尖りの前記通電誘発部分で前記支持鋼材表面の防錆塗料膜や黒皮酸化膜を突き破って、安定したＣＤ溶接が可能となり、しかも、前記先尖り部全体の軸方向の長さが短く、該先尖り部全体が溶解され、充分な溶接強度が得られるから、溶接部の剥離を効果的に防止することができる。また、前記先尖り部近傍の前記ピン本体に細軸部を設けることで、前記支持鋼材に溶接した後、前記断熱材に引っ張り力が発生して、前記ピン本体に曲げ応力が作用すると、前記細軸部が弾性変形して湾曲し、溶接部にかかる応力を軽減して、該溶接部の剥離防止の効果を高めることができる。   In the pin for fixing a heat insulating material according to the present invention, the pointed portion provided at the tip end portion of the pin main body is welded to the constricted portion to be welded to the supporting steel material, and the black portion of the supporting steel material is continuous with the welding portion. It consists of an acute angle that breaks through the skin oxide film and the anticorrosion paint film and generates a spark, and a short energization-inducing part, and in particular, the welded part has a pyramid or conical shape with an apex angle of about 90 degrees. The energization-inducing part is formed in a short pyramid shape or conical shape with an apex angle of about 45 degrees and a height of about 1 mm, so that the protective sheet on the surface of the heat insulating material is cut. In addition, the heat insulating material can be easily penetrated, and the current-inducing portion with a sharp angle and a short point can break through the rust preventive paint film and the black skin oxide film on the surface of the supporting steel material, thereby enabling stable CD welding. , The axial length of the entire pointed portion is short, Entire previously pointed portion is dissolved, since sufficient welding strength can be obtained, it is possible to effectively prevent the peeling of the welded portion. Further, by providing a thin shaft portion in the pin main body in the vicinity of the pointed portion, after welding to the support steel material, a tensile force is generated in the heat insulating material, and when bending stress acts on the pin main body, The thin shaft portion is elastically deformed and curved, thereby reducing the stress applied to the welded portion and enhancing the effect of preventing the welded portion from peeling off.

前記ピン本体に作用する曲げ応力によって前記細軸部が弾性変形して容易に湾曲するためには、前記細軸部の直径（ｄ）が、前記ピン本体の直径（Ｄ）の１／２〜２／３で、かつ、前記細軸部の長さ（Ｌ）が前記細軸部の直径（ｄ）の１．５倍〜３．０倍であることが望ましい。   In order for the thin shaft portion to elastically deform due to bending stress acting on the pin body and be easily bent, the diameter (d) of the thin shaft portion is ½ to the diameter (D) of the pin body. It is desirable that the length (L) of the thin shaft portion is 1.5 to 3.0 times the diameter (d) of the thin shaft portion.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明に係る断熱材固定用ピン１０を示しており、鋼線材からなる細長いピン本体１１の先端部に先尖り部１２を有し、後端部に薄い鋼板からなる大径の円盤状座金１３がかしめ結合により固着されている。   FIG. 1 shows a pin 10 for fixing a heat insulating material according to the present invention, having a pointed portion 12 at the distal end portion of an elongated pin body 11 made of a steel wire, and having a large diameter made of a thin steel plate at a rear end portion. The disc washer 13 is fixed by caulking.

先尖り部１２は、後述する断熱材２０を容易に貫通し、支持鋼材２１にＣＤ溶接（コンデンサ方式のスタッド溶接）により安定した溶接を可能とするため、支持鋼材２１に溶接される先すぼまりの溶着部分１４と、該溶着部分１４に連続し支持部材２１の黒皮酸化膜及びその上に塗装された防錆塗料膜を突き破ってＣＤ溶接のスパークを発生させる鋭角で、かつ短い通電誘発部分１５とで構成されている。   The pointed portion 12 easily penetrates a heat insulating material 20 to be described later, and enables a stable welding by CD welding (capacitor type stud welding) to the support steel material 21, so that the tip is welded to the support steel material 21. Margin welded portion 14 and an acute and short current induction that breaks through the black skin oxide film of the support member 21 and the anticorrosive paint film coated thereon continuously to the welded portion 14 to generate a CD welding spark. It consists of a part 15.

溶着部分１４は、図２に良く示しているされているように、頂角Ａが約９０度の角錐状又は円錐状に形成され、図示の実施形態では、四角錐状に形成されている。   As shown well in FIG. 2, the welded portion 14 is formed in a pyramid shape or a cone shape having an apex angle A of about 90 degrees, and in the illustrated embodiment, it is formed in a quadrangular pyramid shape.

また、通電誘発部分１５は、頂角Ｂが約４５度の鋭角で、かつ、高さが約１ミリの短い角錐状又は円錐状に形成されている。図示の実施形態では、溶着部分１４と同様に通電誘発部分１５は四角錐状に形成されている。   The energization inducing portion 15 is formed in a short pyramid shape or conical shape having an apex angle B of about 45 degrees and a height of about 1 mm. In the illustrated embodiment, like the welded portion 14, the energization inducing portion 15 is formed in a quadrangular pyramid shape.

先尖り部１２をこのような溶着部分１４と通電誘発部分１５とで構成することにより、先尖り部１２全体の軸方向長さを短くして、断熱材２０を容易に貫通することができると共に、通電誘発部分１５で支持鋼材２１の黒皮酸化膜及び防錆塗料膜を突き破って安定したＣＤ溶接が可能となり、放電時間が約１／１０００秒の短時間であるＣＤ溶接により先尖り部１２全体を溶解させて、大きな溶接面積の溶接部１６（後述する）が得られる。   By configuring the pointed portion 12 with such a welded portion 14 and the energization inducing portion 15, the axial length of the entire pointed portion 12 can be shortened and the heat insulating material 20 can be easily penetrated. The energization-inducing portion 15 breaks through the black skin oxide film and the rust preventive paint film of the support steel material 21 to enable stable CD welding, and the pointed portion 12 is obtained by CD welding with a discharge time of about 1/1000 second. The whole is melted to obtain a welded portion 16 (described later) having a large weld area.

図３は、上記のように構成した本発明に係る断熱材固定用ピン１０の使用状態を示している。ピン本体１１の先尖り部１２をグラスウール等の断熱材２０に挿通して貫通させ、該先尖り部１２の通電誘発部分１５を鉄骨構造物のＨ形鋼などの支持鋼材２１の表面に押しつけて、該表面の防錆塗料膜や黒皮酸化膜を突き破り通電可能とした状態で、ＣＤ溶接により通電誘発部分１５にスパークを発生させ、溶着部分１４を含む先尖り部１２全体を溶解させて支持鋼材２１に溶接することで、大きな溶接面積の溶接部１６が形成され、充分な溶接強度が得られる。   FIG. 3 shows a use state of the heat insulating material fixing pin 10 according to the present invention configured as described above. The pointed portion 12 of the pin body 11 is inserted through a heat insulating material 20 such as glass wool, and the current-inducing portion 15 of the pointed portion 12 is pressed against the surface of a support steel material 21 such as H-shaped steel of a steel structure. In the state where the rust preventive paint film and the black skin oxide film on the surface are made to break through and energization is possible, spark is generated in the energization inducing portion 15 by CD welding, and the entire pointed portion 12 including the welded portion 14 is dissolved and supported. By welding to the steel material 21, a welded portion 16 having a large welding area is formed, and sufficient welding strength is obtained.

このように支持鋼材２１に溶接した断熱材固定用ピン１０により断熱材２０を固定保持するのであるが、施工作業中、あるいは施工後に、断熱材２０に横方向の引っ張り力が発生してピン本体１１に曲げ応力が作用すると、その応力が溶接部１６に集中して該溶接部１６を剥離しようとする。このようなピン本体１１に作用する曲げ応力が溶接部１６に集中するのを軽減して、該溶接部１６の剥離を防止するために、図４に示すように、先尖り部１２近傍のピン本体１１に細軸部１７を設けることが効果的である。   In this way, the heat insulating material 20 is fixed and held by the heat insulating material fixing pin 10 welded to the support steel material 21, but a lateral pulling force is generated in the heat insulating material 20 during or after the construction work, and the pin body When a bending stress acts on 11, the stress concentrates on the welded part 16 and tries to peel off the welded part 16. In order to reduce the concentration of bending stress acting on the pin body 11 on the welded portion 16 and prevent the welded portion 16 from peeling off, as shown in FIG. It is effective to provide the thin shaft portion 17 on the main body 11.

該細軸部１７は、図５及び図６に示す使用状態において、断熱材２０に図の矢印で示す横方向の引っ張り力が発生してピン本体１１に曲げ応力が作用すると、ピン本体１１の先細部１７が曲がり変形して、溶接部１７に集中する曲げ応力を軽減し、溶接部１６の剥離防止効果を高めるものである。このとき、細軸部１７の曲がり変形を容易にすることと、該細軸部１７の引っ張り強度を考慮して、細軸部１７の直径（ｄ）は、ピン本体１１の直径（Ｄ）の１／２〜２／３で、かつ、細軸部１７の長さ（Ｌ）は、直径（ｄ）の１．５倍ないし３．０倍程度が望ましい。また、細軸部１７にかかる曲げ応力が溶接部１６に及ぼす影響をできる限り小さくするため、先尖り部１２上端から細軸部１４下端までのピン本体１１の長さ（Ｈ）は、直径（ｄ）の１．５倍以下とすることが望ましい。   When the thin shaft portion 17 is subjected to a tensile force in the lateral direction indicated by an arrow in the figure and a bending stress acts on the pin body 11 in the use state shown in FIGS. The taper 17 is bent and deformed to reduce the bending stress concentrated on the welded portion 17 and to enhance the peeling prevention effect of the welded portion 16. At this time, considering the ease of bending deformation of the thin shaft portion 17 and the tensile strength of the thin shaft portion 17, the diameter (d) of the thin shaft portion 17 is equal to the diameter (D) of the pin body 11. It is desirable that the length (L) of the thin shaft portion 17 is 1/2 to 2/3 and is about 1.5 to 3.0 times the diameter (d). Further, in order to minimize the influence of the bending stress applied to the thin shaft portion 17 on the welded portion 16, the length (H) of the pin body 11 from the upper end of the pointed portion 12 to the lower end of the thin shaft portion 14 is a diameter ( It is desirable to set it to 1.5 times or less of d).

なお、図７に示すように、細軸部１７の上下両端とピン本体１１との境界部位にテーパ部１８，１８を設けると、ピン本体１１に作用する曲げ応力による細軸部１７の曲がり変形がより容易になる。   As shown in FIG. 7, when tapered portions 18 are provided at the boundary between the upper and lower ends of the thin shaft portion 17 and the pin body 11, the thin shaft portion 17 is bent and deformed by bending stress acting on the pin body 11. Becomes easier.

本発明に係る断熱材固定用ピンの正面図である。It is a front view of the pin for heat insulating material fixation which concerns on this invention. 同上ピン本体の先尖り部の形状を示しており、（ａ）は先尖り部の正面図、（ｂ）は同斜視図である。The shape of the pointed part of a pin main part same as the above is shown, (a) is a front view of a pointed part, and (b) is the perspective view. 同上断熱材固定用ピンの使用状態を示す縦断正面図である。It is a vertical front view which shows the use condition of the same insulating material fixing pin. 本発明に係る断熱材固定用ピンの別の実施形態を示す正面図である。It is a front view which shows another embodiment of the pin for heat insulating material fixation which concerns on this invention. 同上断熱材固定用ピンの使用状態を示す縦断正面図である。It is a vertical front view which shows the use condition of the same insulating material fixing pin. 同上使用状態において、断熱材に引っ張り力が発生したときのピン本体の曲がり変形を説明する縦断正面図である。It is a vertical front view explaining the bending deformation of the pin body when a tensile force is generated in the heat insulating material in the same usage state. 本発明に係る断熱材固定用ピンのさらに別の実施形態を示す正面図である。It is a front view which shows another embodiment of the pin for heat insulating material fixation which concerns on this invention. 従来の断熱材固定用ピンの使用状態を示す縦断正面図である。It is a vertical front view which shows the use condition of the conventional pin for heat insulating material fixation. 同上使用状態において、断熱材に引っ張り力が発生したときのピン本体の状態を説明する縦断正面図である。It is a vertical front view explaining the state of a pin main body when a tensile force generate | occur | produces in a heat insulating material in use condition same as the above. 同上従来の断熱材固定用ピンのピン本体の先尖り部を示しており、（ａ）は先端部の正面図、（ｂ）は同底面図である。The tip part of the pin main body of the conventional heat insulating material fixing pin is shown, and (a) is a front view of the tip part, and (b) is a bottom view thereof. 従来の断熱材固定用ピンの別タイプのピン本体を示しており、（ａ）はピン本体先端部の正面図、（ｂ）は同ピン本体をＣＤ溶接して支持鋼材に溶接した状態を示す説明図である。The pin main body of another type of the conventional pin for heat insulating material fixation is shown, (a) is a front view of a pin main body front-end | tip part, (b) shows the state which carried out CD welding of the pin main body, and was welded to support steel materials. It is explanatory drawing.

符号の説明Explanation of symbols

１０ 断熱材固定用ピン
１１ ピン本体
１２ 先尖り部
１３ 円盤状座金
１４ 先すぼまりの溶着部分
１５ 鋭角で、かつ短い通電誘発部分
１６ 溶接部
１７ 細軸部
１８ テーパ部
２０ 断熱材
２１ 支持鋼材 DESCRIPTION OF SYMBOLS 10 Pin for insulating material fixing 11 Pin body 12 Pointed portion 13 Disc washer 14 Pointed welded portion 15 Acute angle and short electrification inducing portion 16 Welded portion 17 Thin shaft portion 18 Tapered portion 20 Heat insulating material 21 Support steel material

Claims (5)

ＣＤ溶接（コンデンサ方式のスタッド溶接）によって断熱材を支持鋼材に固定するためのピンであって、鋼線材からなる細長いピン本体の先端部に先尖り部を有し、後端部に薄い鋼板からなる大径の円盤状座金が固着されている断熱材固定用ピンにおいて、
前記先尖り部が、前記支持鋼材に溶接される先すぼまりの溶着部分と、該溶着部分に連続し前記支持鋼材の黒皮酸化膜及び防錆塗料膜を突き破ってスパークを発生させる鋭角で、かつ短い通電誘発部分とで構成されていることを特徴とする断熱材固定用ピン。 A pin for fixing a heat insulating material to a supporting steel material by CD welding (capacitor type stud welding), which has a pointed portion at the front end of an elongated pin body made of steel wire, and a thin steel plate at the rear end. In the pin for fixing the heat insulating material to which the large-diameter disk-shaped washer is fixed,
The pointed part is welded to the support steel material at a constricted portion, and an acute angle is generated to generate a spark that breaks through the black skin oxide film and the anticorrosive paint film of the support steel material continuously to the welded part. And a pin for fixing a heat insulating material, characterized by comprising a short energization-inducing portion. 前記溶着部分は、頂角が約９０度の角錐状又は円錐状に形成され、
前記通電誘発部分は、頂角が約４５度の鋭角で、かつ高さが約１ミリの短い角錐状又は円錐状に形成されていることを特徴とする断熱材固定用ピン。 The welded portion is formed in a pyramid shape or a cone shape having an apex angle of about 90 degrees,
A pin for fixing a heat insulating material, wherein the energization inducing portion is formed in a short pyramid or conical shape having an apex angle of about 45 degrees and a height of about 1 mm. 前記先尖り部近傍の前記ピン本体に細軸部が設けられていることを特徴とする請求項１又は２記載の断熱材固定用ピン。   The pin for insulating material fixing according to claim 1 or 2, wherein a thin shaft portion is provided in the pin main body in the vicinity of the pointed portion. 前記細軸部の直径（ｄ）が、前記ピン本体の直径（Ｄ）の１／２〜２／３であることを特徴とする請求項１、２又は３のいずれかに記載の断熱材固定用ピン。   The diameter (d) of the said thin shaft part is 1 / 2-2 / 3 of the diameter (D) of the said pin main body, The heat insulating material fixation in any one of Claim 1, 2, or 3 characterized by the above-mentioned. Pins. 前記細軸部の長さ（Ｌ）が、該細軸部の直径（ｄ）の１．５倍〜３．０倍であることを特徴とする請求項１、２、３又は４のいずれかに記載の断熱材固定用ピン。   The length (L) of the thin shaft portion is 1.5 to 3.0 times the diameter (d) of the thin shaft portion, any one of claims 1, 2, 3, and 4 A pin for fixing a heat insulating material as described in 1.
JP2008014425A 2008-01-25 2008-01-25 Pin for fixing heat insulation material Pending JP2009174201A (en)

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JP2008014425A JP2009174201A (en) 2008-01-25 2008-01-25 Pin for fixing heat insulation material

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101568212B1 (en) 2012-12-15 2015-11-11 권오민 Manufacturing method of somke control duct with one-body type insulation
CN111996884A (en) * 2020-08-21 2020-11-27 江苏建筑职业技术学院 Robot for improving ground structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101568212B1 (en) 2012-12-15 2015-11-11 권오민 Manufacturing method of somke control duct with one-body type insulation
CN111996884A (en) * 2020-08-21 2020-11-27 江苏建筑职业技术学院 Robot for improving ground structure
CN111996884B (en) * 2020-08-21 2021-12-24 江苏建筑职业技术学院 Robot for improving ground structure

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