JP2009545447A - THERMIT WELDING TOOL, CRUCLE AND THERMIT WELDING METHOD - Google Patents

THERMIT WELDING TOOL, CRUCLE AND THERMIT WELDING METHOD Download PDF

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JP2009545447A
JP2009545447A JP2009522167A JP2009522167A JP2009545447A JP 2009545447 A JP2009545447 A JP 2009545447A JP 2009522167 A JP2009522167 A JP 2009522167A JP 2009522167 A JP2009522167 A JP 2009522167A JP 2009545447 A JP2009545447 A JP 2009545447A
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welding
thermite
base material
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terminal
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大輔 船水
和美 和田
英紀 西島
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THE FURUKAW ELECTRIC CO., LTD.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K23/00—Alumino-thermic welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
    • B60M5/00—Arrangements along running rails or at joints thereof for current conduction or insulation, e.g. safety devices for reducing earth currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/26—Railway- or like rails

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Abstract

本発明のテルミット溶接方法は、溶接端子を溶接具又は坩堝の挿通孔に挿入し、少なくとも溶接端子の一部を母材表面から所定間隔を隔てて空洞部内に配置する工程と、母材表面により空洞部の開口部を封止する工程と、溶融したテルミット材を空洞部に流入させて溶着部を形成する工程と、坩堝または溶接具において、少なくとも溶接端子と母材表面との間の部位を破壊する工程とを含む。これにより、テルミット溶接における母材表面と溶接端子との溶接面積の増大を図ることができる。  The thermite welding method of the present invention includes a step of inserting a welding terminal into an insertion hole of a welding tool or a crucible, and disposing at least a part of the welding terminal in the cavity at a predetermined interval from the surface of the base material. A step of sealing the opening of the cavity, a step of flowing a molten thermit material into the cavity to form a weld, and a crucible or a welding tool, at least a portion between the welding terminal and the base material surface Destroying. Thereby, the increase in the welding area of the base material surface and welding terminal in thermite welding can be aimed at.

Description

本発明は、母材と、導線を接続した溶接端子とをテルミット溶接を行う新規的な溶接方法、それを行うための溶接具及び坩堝に関し、具体的には、母材と溶接端子との溶接面積を十分に確保することによって溶接強度を向上させる溶接方法と、その方法を行うために用いられる溶接具及び坩堝に関する。   The present invention relates to a novel welding method for performing thermite welding between a base material and a welding terminal to which a conductive wire is connected, a welding tool and a crucible for performing the same, and specifically, welding between the base material and the welding terminal. The present invention relates to a welding method for improving welding strength by sufficiently securing an area, and a welding tool and a crucible used for performing the method.

テルミット溶接は、母材の表面近傍でアルミニウムと酸化銅（または酸化鉄）の混合粉に点火して燃焼させ、その化学反応によって生じた熱で銅（または鉄）と母材の一部を溶融して溶着を行うというものである。テルミット溶接の用途は、主として、鉄道分野において２つのレール母材同士でボンド線を用いて電気的に接続したり、地中に埋没された導管を接続したりする場合に用いられる。図５に鉄道用レール上にテルミット溶接を行った態様を示す。
テルミット溶接を行うためには特殊な器具を用いる必要があり、以下、当該特殊器具を坩堝と称し、当該坩堝を構成する部分で、導線を接続した溶接端子と母材との溶着を行う部分を溶接具と称する。 In thermite welding, a mixed powder of aluminum and copper oxide (or iron oxide) is ignited and burnt near the surface of the base metal, and the copper (or iron) and part of the base metal are melted by the heat generated by the chemical reaction. Then, welding is performed. The use of thermite welding is mainly used in the railway field when two rail base materials are electrically connected to each other using a bond wire or a conduit buried in the ground is connected. FIG. 5 shows a mode in which thermite welding is performed on the rail for rail.
In order to perform thermite welding, it is necessary to use a special tool.Hereinafter, the special tool is referred to as a crucible, and a portion constituting the crucible is a portion for welding a welding terminal to which a conductive wire is connected and a base material. This is called a welding tool.

以下、図６（ａ）を参照して一般的な坩堝の構成を説明する。坩堝６１は、その内部にテルミット材６２と点火材６３とを収容し、点火材に点火してそれらを燃焼させるための燃焼室と、燃焼後に溶融したテルミット材６２を流動させるための通路６７と、導線を接続した溶接端子を挿入するための挿入部６９と、溶融したテルミット材６２を通路６７から流入させて母材と溶接端子とを溶着するための凹部６８とからなる。凹部６８は面７０に開口部を有する。
燃焼前の状態において、燃焼室の底はスチールディスク６４で塞がれており、その下方には通路６７が延びている。 Hereinafter, the structure of a general crucible will be described with reference to FIG. The crucible 61 contains a thermite material 62 and an igniter 63 therein, a combustion chamber for igniting the igniter and burning them, and a passage 67 for allowing the molten thermite 62 to flow after combustion. An insertion portion 69 for inserting a welding terminal to which a conducting wire is connected, and a recess 68 for allowing the molten thermite material 62 to flow from the passage 67 and welding the base material and the welding terminal. The recess 68 has an opening in the surface 70.
In the state before combustion, the bottom of the combustion chamber is closed with a steel disk 64, and a passage 67 extends below the bottom.

テルミット溶接を行う前の準備作業としては、図６（ｂ）に示したように、テルミット材６２及びそれを覆うように点火材６３を充填し、続いて、少なくとも先端部が凹部６８内に位置するように、導線を接続した溶接端子７１を挿入部６９に配置し、さらに、母材表面（図示せず）と溶接端子７１の面及び面７０とを当接して凹部６８を封止する。なお、溶接端子７１の面と面７０とは面一となっている。   As a preparatory work before performing thermite welding, as shown in FIG. 6 (b), the thermite material 62 and the ignition material 63 are filled so as to cover it, and then at least the tip portion is positioned in the recess 68. As described above, the welding terminal 71 connected to the conductive wire is disposed in the insertion portion 69, and the base material surface (not shown) and the surface of the welding terminal 71 and the surface 70 are brought into contact with each other to seal the recess 68. The surface of the welding terminal 71 and the surface 70 are flush with each other.

続いて、テルミット溶接を行うために、点火剤６３に点火することによって、テルミット材６２に以下に示すような燃焼反応が起き（銅テルミット溶接の例を示す）、このときの発熱によって、テルミット材６２を構成する金属成分を溶融する。
２Ａｌ＋３ＣｕＯ → ３Ｃｕ＋Ａｌ２Ｏ３＋ΔＱ（発熱）
その際、同時にスチールディスク６４も溶融し、溶融金属は通路６７を通って下方に流出する。通路６７から凹部６８内に向けて溶融金属が流れ込む。このようにして、溶融金属は、凹部６８内において、その熱で母材と溶接端子の一部も溶融して、冷却後に、溶接端子の一部を内部に含んだ状態で母材表面上に溶着部（図６（ｃ）の符号７２参照）を形成し、溶着部７２を介して母材７３と溶接端子７１とを固着する。テルミット溶接後における母材表面、溶着部及び溶接端子を側面からみた態様を図６（ｃ）に示す。実際のテルミット溶接時には、母材研磨、予熱、テルミット溶接後の坩堝の取り外し、スラグ除去、整形等の作業が必要になるが、これらは当業者にとっては既知であるので詳細な説明は省略する。 Subsequently, in order to perform thermite welding, the ignition agent 63 is ignited to cause a combustion reaction as shown below in the thermite material 62 (an example of copper thermite welding is shown). The metal component constituting 62 is melted.
2Al + 3CuO → 3Cu + Al 2 O 3 + ΔQ (heat generation)
At the same time, the steel disk 64 is also melted, and the molten metal flows downward through the passage 67. Molten metal flows from the passage 67 into the recess 68. In this way, the molten metal in the recess 68 melts part of the base material and the welding terminal by the heat, and after cooling, on the surface of the base material in a state including a part of the welding terminal inside. A welding part (see reference numeral 72 in FIG. 6C) is formed, and the base material 73 and the welding terminal 71 are fixed through the welding part 72. The aspect which looked at the base-material surface, the welding part, and the welding terminal after thermite welding from the side is shown in FIG.6 (c). In actual thermite welding, operations such as base metal polishing, preheating, crucible removal after thermite welding, slag removal, shaping, and the like are necessary. However, since these are known to those skilled in the art, detailed description thereof is omitted.

特開２０００−３０１２５４号公報JP 2000-301254 A

上述した一般的なテルミット溶接方法では、図６（ｃ）に示したように、溶融金属が溶着する部分は、溶接端子については凹部６８内に位置していた溶接端子の表面部に相当しおおよそ点線で示す領域部分Ｚであり、母材７３の表面については坩堝６１の面７０における凹部６８の開口部内であって、溶接端子以外の領域部分Ｖである。母材と溶接端子との溶接面積は、領域Ｖと領域Ｚの和であるため、テルミット溶接前に溶接端子７１を凹部６８内に配置する位置によって決定される。したがって、溶接端子７１の凹部６８内に配置される領域部分が多くなれば、母材７３の表面における溶着面積は小さくなり、溶接端子の凹部６８内に配置される領域部分が小さくなれば、溶接端子における溶着面積は小さくなり、何れの場合を採用しても溶接端子と母材表面との当接領域Ｗは溶接されないので、溶接強度の面で不安がある。   In the general thermite welding method described above, as shown in FIG. 6C, the portion where the molten metal is deposited corresponds to the surface portion of the welding terminal located in the recess 68 with respect to the welding terminal. It is the area | region part Z shown with a dotted line, About the surface of the base material 73, it is in the opening part of the recessed part 68 in the surface 70 of the crucible 61, Comprising: It is the area | region part V other than a welding terminal. Since the welding area between the base material and the welding terminal is the sum of the region V and the region Z, it is determined by the position where the welding terminal 71 is disposed in the recess 68 before thermite welding. Therefore, if the area portion disposed in the recess 68 of the welding terminal 71 increases, the welding area on the surface of the base material 73 decreases, and if the area portion disposed in the recess 68 of the welding terminal decreases, welding is performed. The welding area at the terminal is reduced, and the contact area W between the welding terminal and the base metal surface is not welded regardless of which case is used, and there is concern about the welding strength.

上述した問題を解決するために、本発明は、テルミット溶接前に溶接端子を配置する際に、凹部６８の開口部内における母材表面と溶接端子との間に所定間隔の隙間を設けることにより、テルミット溶接時に当該隙間にも溶融金属を流入させて母材と溶接端子との間の溶着領域部分を増加し、その結果、非溶接領域部分Ｗを削減することができるテルミット溶接方法及びその溶接方法を実現するための坩堝又は溶接器具を提供することを目的とする。   In order to solve the above-described problem, the present invention provides a gap at a predetermined interval between the base material surface and the welding terminal in the opening of the recess 68 when the welding terminal is arranged before thermite welding. A thermite welding method and a welding method thereof capable of increasing the weld region between the base material and the welding terminal by flowing molten metal into the gap during thermite welding and, as a result, reducing the non-weld region W. An object of the present invention is to provide a crucible or a welding instrument for realizing the above.

（１）上述の目的を達成するために、本発明のテルミット溶接具は、導線を接続した溶接端子と母材とをテルミット溶接するための坩堝を構成し、溶融したテルミット材を受容する空洞部を有して構成され、該空洞部が、母材表面と当接する面に設けられた開口部と、空洞部内に溶融したテルミット材を流入させる流入口部と、前記当接される母材表面から所定距離を隔てた部位と前記空洞部とにおいて開口する貫通孔とを具備することを特徴とする。
（２）また、本発明の坩堝は、（１）に記載された溶接具と、前記流入口部から延びてテルミット材を流入させる流路と、前記流路と連通した連通口を備えた、テルミット材を燃焼させるための燃焼室とを備えたことを特徴とする。
（３）さらに、本発明の溶接具又は坩堝は、少なくとも貫通孔と母材表面との間に介在する部分又は全体が陶器または炭酸ガス型法で製造されていることが好ましい。
（４）さらに、本発明のテルミット溶接方法は、（１）ないし（３）に記載された溶接具または坩堝を用いてテルミット溶接を行う方法であって、前記溶接端子を前記挿通孔に挿入し、少なくとも溶接端子の一部を空洞部内に配置する工程と、前記母材表面により前記空洞部の開口部を封止する工程と、溶融したテルミット材を空洞部に流入させて溶着部を形成する工程と、前記坩堝または溶接具において、少なくとも溶接端子と母材表面との間の部位を破壊する工程とを含むことを特徴とする。
（５）さらに、本発明のテルミット溶接方法は、
導線を接続した溶接端子と母材とをテルミット溶接するための溶接具であって、
当該溶接具が、溶融したテルミット材を受容する空洞部を有して構成され、
当該空洞部が、
母材表面と当接する面に設けられた開口部と、
空洞部内に溶融したテルミット材を流入させる流入口部と、
前記母材との当接面に開口部を有して、前記空洞部に連通する凹部と、
を備えた溶接具を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を凹部内に配置する工程と、
前記凹部において、溶接端子と母材表面との間に介在する位置に前記切片を配置する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
を含むことを特徴とする。
（６）さらに、本発明のテルミット溶接方法は、
導線を接続した溶接端子と母材とをテルミット溶接するための坩堝であって、
テルミット材を燃焼させるための燃焼室と、
燃焼により溶融したテルミット材が流動するための、前記燃焼室に連通する流路と、
前記溶接端子と母材とを溶接する溶着部を形成するための空洞部であって、前記流路と連通するとともに母材に対して開口部を有する空洞部と、
前記母材との当接面に開口部を有して、前記空洞部に連通する凹部と、
を備えた坩堝を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程と、
前記凹部において、溶接端子と母材表面との間に介在する位置に前記切片を配置する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
を含むことを特徴とする。
（７）さらに、本発明のテルミット溶接方法は、
導線を接続した溶接端子と母材とをテルミット溶接するための溶接具であって、
当該溶接具が、溶融したテルミット材を受容する空洞部を有して構成され、
当該空洞部が、
母材表面と当接する面に設けられた開口部と、
空洞部内に溶融したテルミット材を流入させる流入口部と、
前記母材との当接面に開口部を有し、前記空洞部に連通する凹部と、
を備えた溶接具を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程であって、前記空洞部内に配置された溶接端子が、前記母材表面と平行な断面において、母材表面との当接部の幅よりも大きい幅を有する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
少なくとも溶接端子と母材表面との間の部位を破壊する工程と、
を含む。
（８）さらに、本発明のテルミット溶接方法は、
導線を接続した溶接端子と母材とをテルミット溶接するための坩堝であって、
テルミット材を燃焼させるための燃焼室と、
燃焼により溶融したテルミット材が流動するための、前記燃焼室に連通する流路と、
前記溶接端子と母材とを溶接する溶着部を形成するための空洞部であって、前記流路と連通するとともに母材に対して開口部を有する空洞部と、
前記母材との当接面に開口部を有し、前記空洞部に連通する凹部と、
を備えた坩堝を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程であって、前記空洞部内に配置された溶接端子が、前記母材表面と平行な断面において、母材表面との当接部の幅よりも大きい幅を有する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
少なくとも溶接端子と母材表面との間の部位を破壊する工程と、
を含む。 (1) In order to achieve the above-mentioned object, the thermite welding tool of the present invention constitutes a crucible for thermite welding of a welding terminal to which a conducting wire is connected and a base material, and receives a molten thermite material. An opening provided on a surface where the cavity is in contact with the surface of the base material, an inflow port for allowing the molten thermite material to flow into the cavity, and the surface of the base material to be contacted And a through hole that opens in the cavity and a portion separated by a predetermined distance.
(2) Moreover, the crucible of the present invention comprises the welding tool described in (1), a flow path extending from the inflow port portion to allow the thermite material to flow in, and a communication port communicating with the flow path. And a combustion chamber for burning the thermite material.
(3) Furthermore, in the welding tool or crucible of the present invention, it is preferable that at least a part or the whole interposed between the through hole and the base material surface is manufactured by a pottery or carbon dioxide type method.
(4) Furthermore, the thermite welding method of the present invention is a method of performing thermite welding using the welding tool or crucible described in (1) to (3), wherein the welding terminal is inserted into the insertion hole. A step of disposing at least a part of the welding terminal in the cavity, a step of sealing the opening of the cavity by the surface of the base material, and flowing a molten thermite material into the cavity to form a welded portion. And a step of destroying at least a portion between the welding terminal and the surface of the base material in the crucible or the welding tool.
(5) Furthermore, the thermite welding method of the present invention comprises:
A welding tool for thermite welding of a welding terminal to which a conductor is connected and a base material,
The welding tool is configured to have a cavity for receiving the molten thermit material,
The cavity is
An opening provided on a surface that contacts the surface of the base material;
An inlet port for flowing molten thermite material into the cavity,
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a welding tool comprising:
Disposing the welding terminal in the recess so that at least a portion of the welding terminal is disposed in the cavity; and
In the recess, the step of arranging the section at a position interposed between the welding terminal and the base material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
It is characterized by including.
(6) Furthermore, the thermite welding method of the present invention comprises:
A crucible for thermite welding of a welding terminal to which a conducting wire is connected and a base material,
A combustion chamber for burning thermite material;
A channel communicating with the combustion chamber for flowing thermite material melted by combustion;
A hollow portion for forming a welded portion for welding the weld terminal and the base material, the hollow portion communicating with the flow path and having an opening with respect to the base material;
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a crucible equipped with
Disposing the welding terminal in the recess so that at least a portion of the welding terminal is disposed in the cavity;
In the recess, the step of arranging the section at a position interposed between the welding terminal and the base material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
It is characterized by including.
(7) Furthermore, the thermite welding method of the present invention comprises:
A welding tool for thermite welding of a welding terminal to which a conductor is connected and a base material,
The welding tool is configured to have a cavity for receiving the molten thermit material,
The cavity is
An opening provided on a surface that contacts the surface of the base material;
An inlet port for flowing molten thermite material into the cavity,
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a welding tool comprising:
A step of disposing a welding terminal in the recess so that at least a part of the welding terminal is disposed in the cavity, wherein the welding terminal disposed in the cavity is in a cross section parallel to the surface of the base material; A step having a width larger than the width of the contact portion with the material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Destroying at least a portion between the weld terminal and the base material surface;
including.
(8) Furthermore, the thermite welding method of the present invention comprises:
A crucible for thermite welding of a welding terminal to which a conducting wire is connected and a base material,
A combustion chamber for burning thermite material;
A channel communicating with the combustion chamber for flowing thermite material melted by combustion;
A hollow portion for forming a welded portion for welding the weld terminal and the base material, the hollow portion communicating with the flow path and having an opening with respect to the base material;
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a crucible equipped with
A step of disposing a welding terminal in the recess so that at least a part of the welding terminal is disposed in the cavity, wherein the welding terminal disposed in the cavity is in a cross section parallel to the surface of the base material; A step having a width larger than the width of the contact portion with the material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Destroying at least a portion between the weld terminal and the base material surface;
including.

（発明の効果）
（１）本発明の溶接具は、前記当接される母材表面から所定距離を隔てた部位と前記空洞部とで開口する貫通孔を具備するので、テルミット溶接を行うと、母材表面と当接する面に設けられた開口部内における母材表面と溶接端子との間の隙間に溶融金属が流入して母材と溶接端子との溶接面積が拡大することとなり、溶接強度を向上させることができる。
また、本発明の溶接具は、坩堝本体と着脱可能に構成することができ、可搬性の向上を図ることができる。
（２）本発明の坩堝は、上記溶接具の他に、流入口部から延びてテルミット材を流入させる流路と、前記流路と連通した連通口を備えた、テルミット材を燃焼させるための燃焼室とを備えているので、溶接具と溶融金属生成部と一体化した坩堝を構成して点火材に点火するのみで、（１）のテルミット溶接の効果を実現することができる。
（３）本発明の溶接具又は坩堝は、少なくとも貫通孔と母材表面との間に介在する部分が陶器または炭酸ガス型法で製造されているので、テルミット溶接後に当該部分を容易に破壊して溶接具または坩堝をテルミット溶接部位から取り外すことができる。
（４）本発明のテルミット溶接方法は、上記溶接具又は坩堝を用い、少なくとも溶接端子と母材表面との間の部位を破壊する工程とを含むので、溶接後に溶接具または坩堝を取外し不能にしていた箇所を破壊することができるようになり、テルミット溶接後に母材表面と当接する面に設けられた開口部内における母材表面と溶接端子との間の隙間に溶融金属が流入して母材と溶接端子との溶接面積が拡大することとなり、溶接強度を向上させるテルミット溶接を実現することができる。
（５）本発明の別の実施形態によるテルミット溶接方法は、少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を凹部内に配置する工程と、前記凹部において、溶接端子と母材表面との間に介在する位置に前記切片を配置する工程と、前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、 溶融したテルミット材を空洞部に流入して溶着部を形成する工程とを含む。
それによって、母材表面と当接する面に設けられた空洞部の開口部内において、溶接端子と母材表面との間に切片の厚み間隔分だけ隙間が形成されるので、テルミット溶接を行うと、溶融金属が当該隙間に流入して溶接端子と母材表面とを溶接することとなり、空洞部の開口部（母材表面に形成される溶着部の底面）内全域に渡って母材表面との溶接面積を拡大することができる。
（６）本発明の別の実施形態によるテルミット溶接方法は、溶接具の他に、溶融金属の生成部を一体化して、（５）に記載した効果を実現することができる。
（７）本発明の別の実施形態によるテルミット溶接方法は、空洞部内に配置された溶接端子が、母材表面と平行な断面において、母材表面との当接部の幅よりも大きい幅を有するので、例えば、溶接具または坩堝の溶接端子の挿入方向に対する垂直断面が三角形で、テルミット溶接前に母材表面上に溶接端子を安定配置するために三角形の頂部の縁と母材表面とを当接させた場合、その当接面積は従来の溶接端子と比較して小さく、空洞部の開口部内における母材表面の溶接面積を拡大することができる。 (The invention's effect)
(1) Since the welding tool of the present invention includes a through-hole that opens at a portion separated from the surface of the base material to be contacted by a predetermined distance and the hollow portion, when performing thermite welding, The molten metal flows into the gap between the base metal surface and the welding terminal in the opening provided in the contact surface, and the welding area between the base material and the welding terminal is expanded, thereby improving the welding strength. it can.
Moreover, the welding tool of this invention can be comprised with a crucible main body so that attachment or detachment is possible, and can aim at the improvement of portability.
(2) The crucible of the present invention is for burning the thermite material provided with a flow path extending from the inflow port and allowing the thermite material to flow in, in addition to the welding tool, and a communication port communicating with the flow path. Since the combustion chamber is provided, the effect of thermite welding of (1) can be realized only by constituting a crucible integrated with the welding tool and the molten metal generator and igniting the ignition material.
(3) In the welding tool or crucible of the present invention, at least a portion interposed between the through hole and the base material surface is manufactured by a pottery or carbon dioxide gas type method, so that the portion can be easily broken after thermite welding. The welding tool or crucible can be removed from the thermite welding site.
(4) The thermite welding method of the present invention uses the above-mentioned welding tool or crucible and includes a step of destroying at least a portion between the welding terminal and the base material surface, so that the welding tool or the crucible cannot be removed after welding. The molten metal flows into the gap between the base metal surface and the welding terminal in the opening provided on the surface that comes into contact with the base metal surface after thermite welding. The welding area with the welding terminal is expanded, and thermite welding that improves the welding strength can be realized.
(5) The thermite welding method according to another embodiment of the present invention includes a step of arranging the welding terminal in the recess so that at least a part of the welding terminal is arranged in the cavity, and the welding terminal and the mother in the recess. A step of arranging the section at a position interposed between the surface of the material and a step of bringing the surface of the cavity portion in which the opening is formed and the surface of the recess in which the opening is formed into contact with the surface of the base material And a step of flowing the molten thermit material into the hollow portion to form a welded portion.
Thereby, in the opening of the cavity provided in the surface that comes into contact with the base material surface, a gap is formed by the thickness interval of the section between the welding terminal and the base material surface, so when performing thermite welding, The molten metal flows into the gap and welds the welding terminal and the base metal surface, and the entire area in the opening of the cavity (the bottom surface of the weld formed on the base metal surface) is in contact with the base metal surface. The welding area can be enlarged.
(6) The thermite welding method according to another embodiment of the present invention can realize the effect described in (5) by integrating the weld metal generation part in addition to the welding tool.
(7) In the thermite welding method according to another embodiment of the present invention, the welding terminal disposed in the cavity has a width larger than the width of the contact portion with the base material surface in a cross section parallel to the base material surface. For example, the vertical cross-section of the welding tool or crucible with respect to the insertion direction of the welding terminal is a triangle, and the top edge of the triangle and the surface of the base material are arranged in order to stably place the welding terminal on the surface of the base material before thermite welding. In the case of contact, the contact area is smaller than that of a conventional welding terminal, and the weld area on the surface of the base material in the opening of the cavity can be enlarged.

本発明の好ましい実施形態について実施例を挙げ、図面を参照して説明する。なお、図１ないし４において、同じ構成要素には同じ符号を用い、適宜その説明を省略する場合がある。   The preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 4, the same components are denoted by the same reference numerals, and the description thereof may be omitted as appropriate.

図１（ａ）ないし（ｃ）は本発明の第１の実施例を図示している。図１（ａ）は、本発明の第１実施例における坩堝１の斜視図を示している。図１（ｂ）は、テルミット溶接を行うために導線を接続した溶接端子を所定位置に配置した坩堝の斜視図である。図１（ｃ）は、坩堝を用いて母材と溶接端子とをテルミット溶接した溶接後の側面図を示している。   FIGS. 1A to 1C illustrate a first embodiment of the present invention. Fig.1 (a) has shown the perspective view of the crucible 1 in 1st Example of this invention. FIG.1 (b) is a perspective view of the crucible which arrange | positioned the welding terminal which connected the conducting wire in order to perform thermite welding in the predetermined position. FIG.1 (c) has shown the side view after the welding which carried out thermite welding of the base material and the welding terminal using the crucible.

図１（ａ）を参照して本発明の坩堝１を説明すると、当該坩堝１は、図６に示したテルミット溶接用の溶融金属を生成する生成部を内部に備えた坩堝本体２と、該坩堝本体２の面４上で着脱可能なテルミット溶接を行う溶接具３とを具備する。坩堝本体２とテルミット溶接具３との着脱は、例えば、溶接具３の突起と坩堝本体２の面４内の孔部とを係合させて接合部１８を形成するようにして行うことができる。
坩堝本体２には、テルミット材を収容して燃焼及び溶融させるための燃焼室１１と、燃焼室１１の底部内面と面４上とにおいて開口部を有し、溶融したテルミット材を流動させるための通路５とが形成されている。
溶接具３には、流路７、円錐台形状の凹部８、及び、面１３と凹部８の内面とで開口する貫通孔９が形成されている。溶接具３を坩堝本体２に装着してテルミット溶接を行うと、流路７には、坩堝本体２の面４上の開口部から溶融したテルミット材が流入される。
通路７は、坩堝本体の面４の開口部から凹部８に沿って開口しているが、開口していない貫通孔としてもよい。
凹部８は、流路７及び貫通孔９と連通する空洞部を形成するとともに、テルミット溶接時に母材表面（図示せず）と当接する面６に開口部を有する。貫通孔９は、その内部形状がテルミット溶接される溶接端子の外郭形状と略相補的な形状を有する。テルミット溶接準備段階において配置される母材の表面と貫通孔９との間に介在する領域Ｇの部分は陶器又は炭酸ガス型法等による外力に対して破損しやすい部材で形成されている。 Referring to FIG. 1 (a), the crucible 1 of the present invention will be described. The crucible 1 includes a crucible body 2 having a generation unit for generating molten metal for thermite welding shown in FIG. And a welding tool 3 that performs detachable thermite welding on the surface 4 of the crucible body 2. The crucible body 2 and the thermite welding tool 3 can be attached and detached by, for example, engaging the projection of the welding tool 3 with the hole in the surface 4 of the crucible body 2 to form the joint 18. .
The crucible body 2 has a combustion chamber 11 for containing and burning and melting the thermite material, and an opening at the bottom inner surface and the surface 4 of the combustion chamber 11 for flowing the molten thermite material. A passage 5 is formed.
In the welding tool 3, a flow path 7, a truncated conical recess 8, and a through hole 9 that opens at the surface 13 and the inner surface of the recess 8 are formed. When the welding tool 3 is attached to the crucible body 2 and thermite welding is performed, the molten thermite material flows into the flow path 7 from the opening on the surface 4 of the crucible body 2.
The passage 7 opens from the opening of the surface 4 of the crucible body along the recess 8, but may be a through hole that is not open.
The recess 8 forms a cavity that communicates with the flow path 7 and the through-hole 9 and has an opening on the surface 6 that abuts the surface of the base material (not shown) during thermite welding. The through hole 9 has a shape that is substantially complementary to the outer shape of the weld terminal to be welded with thermite. The portion of the region G that is interposed between the surface of the base material and the through-hole 9 that is arranged in the thermite welding preparation stage is formed of a member that is easily damaged by an external force such as pottery or a carbon dioxide gas method.

続いて、図１（ｂ）を参照してテルミット溶接前の準備段階について説明すると、図６に示したように、燃焼室１１には、その底部に通路を塞ぐディスク１４が置かれ、それを覆うようにテルミット材１６及びその上に点火材１７が充填される。さらに、導線を接続した溶接端子１０は、その先端部が凹部８の内部に突出するように、溶接端子１０の外表面と相補的な形状の貫通孔９に所定位置まで挿入される。そのとき、凹部８内の溶接端子１０は、面６とは所定距離を隔てて配置されることになる。   Next, the preparatory stage before thermite welding will be described with reference to FIG. 1B. As shown in FIG. 6, the combustion chamber 11 is provided with a disk 14 for closing the passage at the bottom thereof. The thermite material 16 and the ignition material 17 are filled thereon so as to cover. Furthermore, the welding terminal 10 to which the conducting wire is connected is inserted to a predetermined position in the through hole 9 having a shape complementary to the outer surface of the welding terminal 10 so that the tip end portion projects into the recess 8. At that time, the welding terminal 10 in the recess 8 is arranged at a predetermined distance from the surface 6.

最後に、母材表面を面６と当接させて凹部８を封止した後に点火材１７に点火してテルミット溶接を行う。溶融金属が凹部８内に流入後、冷却されて凹部８の内部形状と同一に成形された溶着部を介して母材（図示せず）と溶接端子１０とが固着される。溶接具３の貫通孔９と母材表面との間に介在する領域Ｇの部分が存在するため、坩堝１または溶接具３は取り外しができない状態となっているが、テルミット溶接後に溶接具３を母材から離隔方向へ引張って、あるいは、金鎚等を用いて溶接具３を殴打して領域Ｇを破壊する。これによって、溶接具３をテルミット溶接部から取り外して図１（ｃ）の溶着部を介した母材２９と溶接端子１０との溶接を実現する。また、溶接具３は坩堝本体２に着脱可能であるため、例えば、全体を陶器や炭酸ガス型法で製造することによって破壊し易く安価に製造できるとともに、代替的かつ経済的に使用することができる。もちろん、坩堝本体と一体的に製造して、坩堝全体を破壊する工程を含めても本発明のテルミット溶接方法を実現することは可能であり、発明の範囲に含まれる。   Finally, the surface of the base material is brought into contact with the surface 6 to seal the concave portion 8, and then the ignition material 17 is ignited to perform thermite welding. After the molten metal flows into the recess 8, the base metal (not shown) and the welding terminal 10 are fixed via a welded portion that is cooled and formed in the same shape as the internal shape of the recess 8. Since there is a region G that is interposed between the through hole 9 of the welding tool 3 and the base material surface, the crucible 1 or the welding tool 3 is in a state where it cannot be removed. The region G is destroyed by pulling it away from the base metal or striking the welding tool 3 with a metal hammer or the like. As a result, the welding tool 3 is removed from the thermite weld and the base material 29 and the welding terminal 10 are welded via the welded portion of FIG. Moreover, since the welding tool 3 can be attached to and detached from the crucible body 2, it can be easily manufactured at a low cost by being manufactured entirely by a pottery or carbon dioxide gas type method, and can be used alternatively and economically. it can. Of course, it is possible to realize the thermite welding method of the present invention even if it includes a step of manufacturing the crucible body integrally and destroying the entire crucible, and it is included in the scope of the invention.

図１（ｃ）を参照して説明すると、本発明のテルミット溶接の溶接具３又は坩堝１、及び、テルミット溶接方法を用いて溶接後、溶着部内では、溶接端子１０と母材２９表面との間に所定距離を隔てた隙間領域Ｈに溶着金属が流入しており、本発明のテルミット溶接方法は、従来のテルミット溶接方法に比して溶接面積を増大していることがわかる。   Referring to FIG. 1 (c), after welding using the thermite welding welding tool 3 or crucible 1 and the thermite welding method of the present invention, the weld terminal 10 and the surface of the base material 29 are formed in the welded portion. The weld metal flows into the gap region H with a predetermined distance therebetween, and it can be seen that the thermite welding method of the present invention increases the welding area as compared with the conventional thermite welding method.

図２（ａ）ないし（ｃ）は、本発明の第２の実施例を図示している。図２（ａ）は、本発明の第２実施例における坩堝１を示している。図２（ａ）を参照して第２実施例における坩堝１を説明すると、溶接端子を配置するための凹部１９が母材との当接面に開口して形成されている点で実施例１の坩堝とは相違しており、第１実施例における領域Ｇの部分が小さい切片１５として独立している。   2 (a) to 2 (c) illustrate a second embodiment of the present invention. Fig.2 (a) has shown the crucible 1 in 2nd Example of this invention. The crucible 1 in the second embodiment will be described with reference to FIG. 2 (a). The first embodiment is that a recess 19 for placing a welding terminal is formed in an opening on the contact surface with the base material. The region G in the first embodiment is independent as a small section 15.

続いて、図２（ｂ）を参照して第２実施例におけるテルミット溶接前の準備段階について説明すると、第１実施例と同様に、燃焼室１１には、その底部に通路を塞ぐディスク１４が置かれ、それを覆うようにテルミット材１６及びその上に点火材１７が充填される。続いて、溶接端子１０が配置されるに際して、溶接端子１０のドーム状の外郭部分と凹部１９の相補的な内表面とが密着しつつ、溶接端子１０の先端部が凹部８の内部に突出するように配置される。そのとき、凹部８内の溶接端子１０は、面６とは所定距離を隔てて配置されることになる。続いて、小切片１５が配置されるに際して、溶接端子１０と母材表面との間に介在するように配置され面６で面一になる。   Next, the preparatory stage before thermite welding in the second embodiment will be described with reference to FIG. 2B. As in the first embodiment, the combustion chamber 11 has a disk 14 that blocks the passage at the bottom thereof. The thermite material 16 and the igniter material 17 are filled thereon so as to cover it. Subsequently, when the welding terminal 10 is disposed, the distal end portion of the welding terminal 10 protrudes into the recess 8 while the dome-shaped outer portion of the welding terminal 10 and the complementary inner surface of the recess 19 are in close contact with each other. Are arranged as follows. At that time, the welding terminal 10 in the recess 8 is arranged at a predetermined distance from the surface 6. Subsequently, when the small piece 15 is arranged, the small piece 15 is arranged so as to be interposed between the welding terminal 10 and the base material surface and is flush with the surface 6.

最後に、母材表面を面６と当接させて凹部８を封止した後に点火材１７に点火してテルミット溶接を行う。溶融金属が凹部８内に流入後、冷却されて凹部８の内部形状と同一に成形された溶着部を介して母材（図示せず）と溶接端子１０とが固着される。続いて、溶接具３又は坩堝１を母材から離隔する方向に引いてテルミット溶接部から取り外し、図２（ｃ）に示したように、溶着部を介した母材２９と溶接端子１０との溶接を実現する。   Finally, the surface of the base material is brought into contact with the surface 6 to seal the concave portion 8, and then the ignition material 17 is ignited to perform thermite welding. After the molten metal flows into the recess 8, the base metal (not shown) and the welding terminal 10 are fixed via a welded portion that is cooled and formed in the same shape as the internal shape of the recess 8. Subsequently, the welding tool 3 or the crucible 1 is pulled away from the base material and removed from the thermite weld, and as shown in FIG. 2 (c), the base material 29 and the welding terminal 10 through the welded portion are connected. Realize welding.

続いて、図２（ｃ）を参照して説明すると、本発明の第２実施例におけるテルミット溶接の溶接具３又は坩堝１、及び、テルミット溶接方法を用いて溶接後、溶着部内では、溶接端子１０と母材２９表面との間に所定距離を隔てた隙間領域Ｈに溶着金属が流入しており、本発明のテルミット溶接方法は、従来のテルミット溶接方法に比して溶接面積を増大していることがわかる。小切片１５は、そのまま放置してもよいし、取り外し、又は、陶器等の容易に破壊できる部材で製造されている場合は破壊してもよい。   Next, with reference to FIG. 2 (c), the welding terminal 3 or the crucible 1 for thermite welding in the second embodiment of the present invention and the welding terminal after welding using the thermite welding method, 10 and the surface of the base material 29, a deposited metal flows into a gap region H that is separated by a predetermined distance, and the thermite welding method of the present invention increases the welding area as compared with the conventional thermite welding method. I understand that. The small piece 15 may be left as it is, or may be removed if it is manufactured by a member that can be easily removed such as pottery.

図３は、内部に導線を挿入した溶接端子の異なる外郭形状を有した第３実施例を示している。図３（ａ）は、テルミット材を流入させて、図示されていない母材２９表面と溶接端子とが接触領域を有して溶着部を形成した直後の図を示しており、図３（ｂ）は、溶接具の一部を破壊して溶接端子と溶接具とを隔離した図を示している。図３（ｃ）は、母材２９表面に溶着部が形成された図を示している。   FIG. 3 shows a third embodiment having a different outer shape of the welding terminal into which a conducting wire is inserted. FIG. 3 (a) shows a view immediately after the thermite material is allowed to flow and the surface of the base material 29 (not shown) and the welding terminal have a contact area to form a welded portion, and FIG. ) Shows a diagram in which a part of the welding tool is broken to separate the welding terminal and the welding tool. FIG. 3C shows a view in which a welded portion is formed on the surface of the base material 29.

図４（ａ）は、図３（ｃ）における溶接端子の長手方向（溶接端子の挿入方向）からみたＸ−Ｘの横断断面図を示している。
図１及び図２では、溶接端子の長手方向（溶接端子の挿入方向）に対する垂直断面が半円の半円筒形状を有し、母材表面上の溶着部内において母材表面と溶接端子との間に隙間が形成されている場合について説明したが、図４（ａ）では図３（ｃ）における溶接端子のＸ−Ｘの横断断面が円形の筒形状である。
また、図４（ｂ）では溶接端子の横断断面が三角形の筒形状をしている場合の実施例を示している。各断面において、母材表面と溶接端子とが溶接端子全体に渡って接触領域を有する場合について説明する。 Fig.4 (a) has shown the cross-sectional view of XX seen from the longitudinal direction (insertion direction of a welding terminal) of the welding terminal in FIG.3 (c).
In FIG. 1 and FIG. 2, the vertical cross section with respect to the longitudinal direction of the welding terminal (insertion direction of the welding terminal) has a semi-cylindrical shape with a semicircle, and between the base metal surface and the welding terminal in the welded portion on the base metal surface In FIG. 4A, the XX cross section of the welding terminal in FIG. 3C has a circular cylindrical shape.
FIG. 4B shows an embodiment in which the cross section of the welding terminal has a triangular cylindrical shape. In each cross section, the case where the base material surface and the welding terminal have a contact area over the entire welding terminal will be described.

図４（ａ）及び図４（ｂ）では、溶接端子と母材表面との接触する間隔がｌで表示されている。テルミット溶接時における溶融金属は、溶接端子と母材表面との接触領域の境界まで流れ込むため、従来の半円筒形状の長方形断面部が全て母材表面と当接領域Ｗ（図６（ｃ）参照）を形成した場合と比較して溶接面積は明らかに増大している。
したがって、本発明のテルミット溶接方法では、少なくとも溶接具３における溶接端子１０と母材２９表面との間に存在する領域部分を破壊する（図３（ｂ）参照）ことによって、容易にテルミット溶接後に溶接具３を取り外すことができるので、凹部８内に配置された溶接端子１０は、母材２９表面と平行な断面において、母材２９表面との当接領域ｌの幅よりも大きい幅を有する任意の形状で、例えば、円筒や角筒等とすることができる。溶接端子１０をこのような外郭形状とすることによって、図６に示した従来の溶接端子の非溶接領域Ｗと比較すると、図４（ａ）における非溶接領域（当接領域）ｌが減少し溶接面積が増大するため、その結果、溶接強度を向上させることができる。 In FIG. 4A and FIG. 4B, the contact distance between the welding terminal and the base material surface is indicated by l. Since the molten metal at the time of thermite welding flows to the boundary of the contact region between the welding terminal and the base material surface, the conventional semi-cylindrical rectangular cross section is entirely in contact with the base material surface (see FIG. 6C). The welding area is clearly increased as compared with the case where) is formed.
Therefore, in the thermite welding method of the present invention, at least the region portion existing between the welding terminal 10 and the surface of the base material 29 in the welding tool 3 is destroyed (see FIG. 3B), thereby easily after the thermite welding. Since the welding tool 3 can be removed, the welding terminal 10 disposed in the recess 8 has a width larger than the width of the contact region 1 with the surface of the base material 29 in a cross section parallel to the surface of the base material 29. For example, a cylinder or a square tube can be used. By making the welding terminal 10 into such an outer shape, the non-welding area (contact area) l in FIG. 4A is reduced as compared with the non-welding area W of the conventional welding terminal shown in FIG. Since the welding area increases, the welding strength can be improved as a result.

（ａ）は本発明の実施例１による溶接具及び坩堝の斜視図。（ｂ）はテルミット溶接前の準備段階において導線を接続した溶接端子を挿入孔から挿入した態様の斜視図。（ｃ）はテルミット溶接後における溶着部を介した母材と溶接端子とを溶接した態様側面図。(A) is a perspective view of the welding tool and crucible by Example 1 of the present invention. (B) is the perspective view of the aspect which inserted the welding terminal which connected the conducting wire in the preparatory stage before thermite welding from the insertion hole. (C) is the aspect side view which welded the base material and the welding terminal through the welding part after thermite welding. （ａ）は本発明の実施例２による溶接具及び坩堝の斜視図。（ｂ）はテルミット溶接前の準備段階において、小切片を用いて、導線を接続した溶接端子を配置した態様の斜視図。（ｃ）はテルミット溶接後における溶着部を介した母材と溶接端子とを溶接した態様側面図。(A) is a perspective view of the welding tool and crucible by Example 2 of the present invention. (B) is the perspective view of the aspect which has arrange | positioned the welding terminal which connected the conducting wire using the small section in the preparatory stage before thermite welding. (C) is the aspect side view which welded the base material and the welding terminal through the welding part after thermite welding. （ａ）は、円筒形端子を用いて、テルミット材を流入させて、図示されていない母材表面と溶接端子とが接触領域を有して溶着部を形成した直後の図。（ｂ）は、溶接具の一部を破壊して溶接端子と溶接具とを隔離した図。（ｃ）は、母材表面上に円筒形端子を覆った溶着部が形成された図。(A) is a view immediately after forming a welded portion in which a thermite material is caused to flow in using a cylindrical terminal and a base material surface (not shown) and a welding terminal have a contact region. (B) The figure which destroyed a part of welding tool and isolate | separated the welding terminal and the welding tool. (C) is the figure in which the welding part which covered the cylindrical terminal was formed on the base material surface. （ａ）は、図３（ｃ）におけるＸ−Ｘの横断断面図。（ｂ）は、別の実施例によるテルミット溶接後の溶着部内における三角筒形状の溶接端子の長手方向に対する垂直断面図。(A) is the cross-sectional view of XX in FIG.3 (c). (B) is a vertical cross section with respect to the longitudinal direction of the triangular cylindrical welding terminal in the welded part after thermite welding according to another embodiment. 鉄道用レール母材上にテルミット溶接を行った態様図。The aspect figure which performed thermite welding on the rail-base material for railroads. （ａ）は従来のテルミット溶接用坩堝の斜視図。（ｂ）はテルミット溶接前の準備段階において導線を接続した溶接端子を配置した態様の斜視図。（ｃ）はテルミット溶接後の態様を示した側面図。(A) is a perspective view of the conventional crucible for thermite welding. (B) is the perspective view of the aspect which has arrange | positioned the welding terminal which connected conducting wire in the preparatory stage before thermite welding. (C) is the side view which showed the aspect after thermite welding.

Claims (9)

導線を接続した溶接端子と母材とをテルミット溶接するための坩堝を構成する溶接具であって、該溶接具が、溶融したテルミット材を受容する空洞部を有して構成され、
該空洞部が、
母材表面と当接する面に設けられた開口部と、
空洞部内に溶融したテルミット材を流入させる流入口部と、
前記当接される母材表面から所定距離を隔てた部位と前記空洞部とにおいて開口する貫通孔と、
を具備することを特徴とする溶接具。 A welding tool that constitutes a crucible for thermite welding of a welding terminal and a base material to which a conductive wire is connected, the welding tool is configured to have a hollow portion that receives a molten thermit material,
The cavity is
An opening provided on a surface that contacts the surface of the base material;
An inlet port for flowing molten thermite material into the cavity,
A through-hole that opens at a portion separated from the surface of the base material to be contacted by a predetermined distance and the hollow portion;
A welding tool comprising: 少なくとも貫通孔と母材表面との間に介在する部分が陶器または炭酸ガス型法で製造されていることを特徴とする請求項１に記載の溶接具。   The welding tool according to claim 1, wherein at least a portion interposed between the through hole and the surface of the base material is manufactured by a pottery or carbon dioxide gas type method. 請求項１または２に記載の溶接具と、
前記流入口部から延びてテルミット材を流入させる流路と、
前記流路と連通した連通口を備えた、テルミット材を燃焼させるための燃焼室と
を備えた坩堝。 The welding tool according to claim 1 or 2,
A flow path extending from the inflow port and flowing in the thermite material;
A crucible comprising a combustion chamber for combusting thermite material, comprising a communication port communicating with the flow path. 陶器又は炭酸ガス型法で製造されていることを特徴とする請求項３に記載の坩堝。   The crucible according to claim 3, wherein the crucible is manufactured by a pottery or carbon dioxide gas type method. 請求項１あるいは２に記載の溶接具、または、請求項３あるいは４に記載の坩堝を用いてテルミット溶接を行う方法であって、
前記溶接端子を前記挿通孔に挿入し、少なくとも溶接端子の一部を空洞部内に配置する工程と、
前記母材表面により前記空洞部の開口部を封止する工程と、
溶融したテルミット材を空洞部に流入させて溶着部を形成する工程と、
前記坩堝または溶接具において、少なくとも溶接端子と母材表面との間の部位を破壊する工程と、
を含むテルミット溶接方法。 A method for performing thermite welding using the welding tool according to claim 1 or 2, or the crucible according to claim 3 or 4,
Inserting the welding terminal into the insertion hole, and disposing at least a part of the welding terminal in the cavity; and
Sealing the opening of the cavity with the base material surface;
A process of flowing a molten thermite material into the cavity to form a welded portion;
In the crucible or the welding tool, at least a step of breaking a portion between the welding terminal and the base material surface;
Including thermite welding method. 導線を接続した溶接端子と母材とをテルミット溶接するための溶接具であって、
当該溶接具が、溶融したテルミット材を受容する空洞部を有して構成され、
当該空洞部が、
母材表面と当接する面に設けられた開口部と、
空洞部内に溶融したテルミット材を流入させる流入口部と、
前記母材との当接面に開口部を有して、前記空洞部に連通する凹部と、
を備えた溶接具を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を凹部内に配置する工程と、
前記凹部において、溶接端子と母材表面との間に介在する位置に前記切片を配置する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
を含むテルミット溶接方法。 A welding tool for thermite welding of a welding terminal to which a conductor is connected and a base material,
The welding tool is configured to have a cavity for receiving the molten thermit material,
The cavity is
An opening provided on a surface that contacts the surface of the base material;
An inlet port for flowing molten thermite material into the cavity,
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a welding tool comprising:
Disposing the welding terminal in the recess so that at least a portion of the welding terminal is disposed in the cavity; and
In the recess, the step of arranging the section at a position interposed between the welding terminal and the base material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Including thermite welding method. 導線を接続した溶接端子と母材とをテルミット溶接するための坩堝であって、
テルミット材を燃焼させるための燃焼室と、
燃焼により溶融したテルミット材が流動するための、前記燃焼室に連通する流路と、
前記溶接端子と母材とを溶接する溶着部を形成するための空洞部であって、前記流路と連通するとともに母材に対して開口部を有する空洞部と、
前記母材との当接面に開口部を有して、前記空洞部に連通する凹部と、
を備えた坩堝を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程と、
前記凹部において、溶接端子と母材表面との間に介在する位置に前記切片を配置する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
を含むテルミット溶接方法。 A crucible for thermite welding of a welding terminal to which a conducting wire is connected and a base material,
A combustion chamber for burning thermite material;
A channel communicating with the combustion chamber for flowing thermite material melted by combustion;
A hollow portion for forming a welded portion for welding the weld terminal and the base material, the hollow portion communicating with the flow path and having an opening with respect to the base material;
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a crucible equipped with
Disposing the welding terminal in the recess so that at least a portion of the welding terminal is disposed in the cavity;
In the recess, the step of arranging the section at a position interposed between the welding terminal and the base material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Including thermite welding method. 導線を接続した溶接端子と母材とをテルミット溶接するための溶接具であって、
当該溶接具が、溶融したテルミット材を受容する空洞部を有して構成され、
当該空洞部が、
母材表面と当接する面に設けられた開口部と、
空洞部内に溶融したテルミット材を流入させる流入口部と、
前記母材との当接面に開口部を有し、前記空洞部に連通する凹部と、
を備えた溶接具を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程であって、前記空洞部内に配置された溶接端子が、前記母材表面と平行な断面において、母材表面との当接部の幅よりも大きい幅を有する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
少なくとも溶接端子と母材表面との間の部位を破壊する工程と、
を含むテルミット溶接方法。 A welding tool for thermite welding of a welding terminal to which a conductor is connected and a base material,
The welding tool is configured to have a cavity for receiving the molten thermit material,
The cavity is
An opening provided on a surface that contacts the surface of the base material;
An inlet port for flowing molten thermite material into the cavity,
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a welding tool comprising:
A step of disposing a welding terminal in the recess so that at least a part of the welding terminal is disposed in the cavity, wherein the welding terminal disposed in the cavity is in a cross section parallel to the surface of the base material; A step having a width larger than the width of the contact portion with the material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Destroying at least a portion between the weld terminal and the base material surface;
Including thermite welding method. 導線を接続した溶接端子と母材とをテルミット溶接するための坩堝であって、
テルミット材を燃焼させるための燃焼室と、
燃焼により溶融したテルミット材が流動するための、前記燃焼室に連通する流路と、
前記溶接端子と母材とを溶接する溶着部を形成するための空洞部であって、前記流路と連通するとともに母材に対して開口部を有する空洞部と、
前記母材との当接面に開口部を有し、前記空洞部に連通する凹部と、
を備えた坩堝を用いてテルミット溶接を行う方法であって、
少なくとも溶接端子の一部が空洞部内に配置されるように溶接端子を前記凹部に配置する工程であって、前記空洞部内に配置された溶接端子が、前記母材表面と平行な断面において、母材表面との当接部の幅よりも大きい幅を有する工程と、
前記空洞部の開口部が形成された面と前記凹部の開口部が形成された面とを母材表面に当接させる工程と、
溶融したテルミット材を空洞部に流入して溶着部を形成する工程と、
少なくとも溶接端子と母材表面との間の部位を破壊する工程と、
を含むテルミット溶接方法。 A crucible for thermite welding of a welding terminal to which a conducting wire is connected and a base material,
A combustion chamber for burning thermite material;
A channel communicating with the combustion chamber for flowing thermite material melted by combustion;
A hollow portion for forming a welded portion for welding the weld terminal and the base material, the hollow portion communicating with the flow path and having an opening with respect to the base material;
A recess having an opening on the contact surface with the base material and communicating with the cavity;
A method of performing thermite welding using a crucible equipped with
A step of disposing a welding terminal in the recess so that at least a part of the welding terminal is disposed in the cavity, wherein the welding terminal disposed in the cavity is in a cross section parallel to the surface of the base material; A step having a width larger than the width of the contact portion with the material surface;
Contacting the surface on which the opening of the cavity is formed and the surface on which the opening of the recess is formed on the surface of the base material;
A flow of molten thermite material into the cavity to form a weld, and
Destroying at least a portion between the weld terminal and the base material surface;
Including thermite welding method.
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