JPS58209472A - Joining method of pipes by automatic brazing - Google Patents

Abstract

PURPOSE:To diffuse and pack molten solder forcibly into the spacings between pipes which are cooled on the joining sides and a joint member provided with a projection on the inside surface at both ends having a brazing material and to join the pipes securely by inserting the pipes into said joint member and heating the same. CONSTITUTION:A projection (g) is formed on one body on the inside circumference at both ends of a joint member (b) having a brazing material (e). The joint sides of pipes a, a' to be joined are cooled with a refrigerant (m) such as liquid nitrogen or the like and are then inserted into the member (b). The joint member is heated to melt the solder and the molten solder is diffused and packed forcibly in the spacings between the pipes a, a' and the member (b) by utilizing the recovering effect of the pipes a, a' during heating. The pipes a, a' are joined securely by the above-mentioned method without pressurization.

Description

【発明の詳細な説明】 本発明はパイプ接合方法に関する改良に関する。[Detailed description of the invention] The present invention relates to improvements in pipe joining methods.

従来のパイプ接合法としては、漏れを防上し、強固にパ
イプを接合する方・法として第１図〜第４図に示すよう
なロウ材は接合が考えられている１、第１図はロウ材ｅ
を有するスリーブｂを用いてパイプａＸ　ａ’をガスバ
ーナーｄにより加熱し一〇接合させるツノθ２．第２図
は［ロウ＋Ａｅ（！−はさノド、〕、ム、υ１１月−加
熱、こよ′つてバイブａ、ａ’を接合させるＪＪ法、第
５図はパイプａ、ａ’をロウ材ｅを１＋する継ぎ手部伺
すをＩｆｌいて、その部うＪを加１１ｔかつ加熱するこ
とにより接合させる方法及び第４図１・まスリーブｂＱ
両側に−に１のリング状ＩＪ　Ｉ７８　、　　ｅ’を置
き、その外側に一対の補助スリブ■゛、ｆ゛／を配置し
、その置きロウｅ、ｅ’を加熱するとともに補助スリー
ブｆ、ｆ’を相寄せる／、向にリロエし、溶融した置ぎ
ロウを毛細管現象による浸透作用によりパイプａ、ａ’
とスリーブｂの間に圧入して、強制的に拡散光てんさせ
て接合する方法を夫々示す、）（図中Ｓは／リンダーで
ある）以４−１．いずれの方法も強固に接合させるため
、加熱とともにｂｌ圧を同時に行なうものであ゛る６１ これに灯し、本発明は加圧に換わる方法で、ｋ−’ｒｒ
に溶融した置きロウをパイプとスリーブの間に入れる方
法として、冷しバメ方法を提案するもので　パイプを突
き合せ状態に接合する場合、ロウ材を有する両端内面に
−・体の突起物、うついた継ぎ平部イオを用い、パイプ
の接合側全冷媒で冷やした後、その継ぎ手部材に挿入し
、加熱時のパイプの復元作用を利用して、パイプと継ぎ
手部材の間に溶融ロウを強制的に拡散光でんさせること
を特徴とした自動ロウ付けによるパイプ接合方法を要旨
とするものである。As a conventional pipe joining method, brazing metal joining as shown in Figures 1 to 4 has been considered as a method to prevent leakage and firmly join pipes1. Brazing material e
Pipe aX a' is heated by gas burner d using sleeve b having 10 horns θ2. Figure 2 shows the JJ method of joining the vibrators a and a' by [waxing + Ae (!-hasanod,], mu, υNovember-heating, and so on). Fig. 4 1. The method of joining by adding 11t and heating the joint part to make 1+, and the method of joining by adding 11t to that part and heating.
A ring-shaped IJ I78, e' is placed on both sides, and a pair of auxiliary sleeves f, f' are placed on the outside thereof, and the auxiliary sleeves f, f' are heated. The melted wax is poured into pipes a and a' by capillary action.
(S in the figure is /linder) 4-1. In either method, heating and bl pressure are applied simultaneously in order to bond firmly.61 In light of this, the present invention is a method that replaces pressurization.
The cold fitting method is proposed as a method for inserting molten solder between the pipe and the sleeve. After cooling the joint side of the pipe with all the refrigerant, it is inserted into the joint member, and the molten wax is forced between the pipe and the joint member by using the restoring action of the pipe when heated. The gist of this paper is a method for joining pipes by automatic brazing, which is characterized by emitting diffused light.

以下、本発明を第５図、第６図を参照しつ＼詳述する。The present invention will be described in detail below with reference to FIGS. 5 and 6.

第５図にロウ材ｅを有する継ぎ手部材すと接合させよう
とするパイプａ、ａ’を示す５、継ぎ手部材すの両端内
面には周上に突起物ｇが一体で付いている。継ぎ手部材
すの突起部の内径１１とパイプの外径１２は同じとし、
ロウ材部の内径１：。Fig. 5 shows pipes a and a' to be joined to a joint member having brazing material e, and protrusions g are integrally attached to the inner surfaces of both ends of the joint member on the circumference. The inner diameter 11 of the protrusion of the joint member and the outer diameter 12 of the pipe are the same,
Inner diameter of brazing metal part 1:.

は突１起部の内径１１よりもわずかに小とする。パイプ
を接合しようとする場合、まず、第６図？こ示すように
パイプａＸ　ａ’の継ぎ目側を液体窒素等の冷媒ｍで冷
やす。（図中、ｉは保温材を示す）その後、そのパイプ
を取り出して、第５図に示すロウ＋Ａｅを有する継ぎ手
部材すの中に止しくさし込み、継き丁一部を加Ｍして「
１つを溶融さＶ。is slightly smaller than the inner diameter 11 of the projection 1. When trying to join pipes, first refer to Figure 6. As shown, the joint side of the pipe aX a' is cooled with a refrigerant m such as liquid nitrogen. (In the figure, i indicates a heat insulating material.) Then, take out the pipe, insert it into a joint member with wax +Ae shown in Figure 5, and heat a part of the joint. "
V melted one.

パイプと継き千部拐の間に拡散４１てＡ７させる、加圧
により、「Ｊつを毛細管現象による浸、今（、ｌ、−＋
＋＋でパイプと継き千部桐の間に、−ｈ　’ｔｉｌｌ的
に拡＾々Ａ−，ｔんさせる従来ｔ）二の換わり１で、本
発明は冷却されたパイプが復元する作用を利用して［−
記動ＩＰ、を働かせるものである。Diffusion 41 and A7 between the pipe and the 1,000 parts, and by applying pressure, immersion by capillary action, now (, l, - +
++ In place of the conventional method of connecting the pipe and the 1,000 paulownia wood, -h 'till, expanding A-, t), the present invention utilizes the action of the cooled pipe to restore its original shape. Then [-
It is the one that makes the recording IP work.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第４図は従来のパイプ接合方法の態様を説明す
る図、第５図、第・６図は本発明のペイプ接合方法の一
態様を説明する図である。 復代理人　　内　１）　　＋ｌｌ 復代理人　　萩　１ち１、・免 第１図 力口圧 第５図 第６図1 to 4 are diagrams for explaining aspects of a conventional pipe joining method, and FIGS. 5 and 6 are diagrams for explaining one aspect of the pipe joining method of the present invention. Sub-Agent 1) +ll Sub-Agent Hagi 1 Chi 1, Immunity 1 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】[Claims] パイプを突き合せ状態に接合する場合、ロウ材を有する
両端内面に一体の突起物のついた継ぎ手部材を用い、パ
イプの接合側を冷媒で冷やした後、その継ぎ手部材に挿
入１−１加熱時のパイプの復元作用を利用して、パイプ
と継ぎ手部材の間に溶融ロウを強制的に拡散光てんさせ
ることを特徴とした自動ロウ付けによるパイプ接合方法
。When joining pipes in a butt state, use a joint member with integrated protrusions on the inner surfaces of both ends that has brazing material, and after cooling the joining side of the pipe with a refrigerant, insert it into the joint member 1-1 During heating. A method for joining pipes by automatic brazing, which uses the restoring action of the pipe to forcibly diffuse molten wax between the pipe and the joint member.