JPH0497830A - エレクトロフュージョン継手の融着方法 - Google Patents

エレクトロフュージョン継手の融着方法

Info

Publication number
JPH0497830A
JPH0497830A JP2214660A JP21466090A JPH0497830A JP H0497830 A JPH0497830 A JP H0497830A JP 2214660 A JP2214660 A JP 2214660A JP 21466090 A JP21466090 A JP 21466090A JP H0497830 A JPH0497830 A JP H0497830A
Authority
JP
Japan
Prior art keywords
heating wire
joint
electric heating
voltage
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2214660A
Other languages
English (en)
Other versions
JP2847686B2 (ja
Inventor
Fumio Hase
文夫 長谷
Kazunori Mito
水戸　和憲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Petrochemical Industries Ltd
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP21466090A priority Critical patent/JP2847686B2/ja
Publication of JPH0497830A publication Critical patent/JPH0497830A/ja
Application granted granted Critical
Publication of JP2847686B2 publication Critical patent/JP2847686B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91653—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、プラスチック管を連結するのに使用され、管
との接触面に電熱線を埋設したエレクトロフュージョン
継手の融着方法に関する。
従来技術 上下水道やガス管などに多用され始めたプラスチック管
の継手として近年開発されたものにエレクトロフュージ
ョン継手がある。
エレクトロフュージョン継手は管との接触面に電熱線を
埋設した成形品よりなるもので、ソケット継手、サドル
継手、エルボ継手、Ｔ継手、レジューサ継手、キャップ
継手など各種の継手が開発されており、管との融着は、
管端部を継手に嵌挿するか、継手を管の側方より外周面
に押当てた状態で決められた時間、一定の電圧で通電し
て接触面を加熱溶融することにより行われている。
融着時にエレクトロフュージョン継手に付与される適正
なインプットエネルギーは、継手の種類や口径によって
異なり、そのコントロールは出力電圧が一定であるから
電熱線の抵抗値によって行われている。そこで従来、エ
レクトロフュージョン継手の設計時には、継手の種類や
口径に応じて適正な出力エネルギーが得られるような抵
抗値の電熱線を選び、コイルのピッチや融着時間を変え
ることによって調整していた。
第１図に示すソケット継手と第２図に示すキャンプ継手
についていえば、これらの融着部は口径が同し場合、全
く同一の条件で融着することが好ましい、同一条件の融
着とは、電熱線からの放熱を考慮すると、線の外径、巻
ピッチが同一であることが必要であり、上述のキャップ
継手は、ソケットの１７２のエネルギーで融着しなけれ
ばならない、従って定電圧の場合、キャップ継手はソケ
ット継手に比較して電熱線が１７２の長さで２倍の抵抗
を必要とすることから、線の固を抵抗は４倍であること
が要求されるが、ぴったりと一致するような電熱線を探
すのは困難であり、通常は線径の若干の変更を含め、４
倍に近い電熱線を選択してからコイルのピッチ、巻数や
時間を変更して調整していた。
発明が解決しようとする課題 従来法では上述するように、継手の種類や口径に応じて
必要な抵抗値の電熱線を選択し、なければピッチを変え
て電熱線の密度を変更したり、融着時間を変えて調整し
ていたが、必要な出力エネルギーが得られるように設計
するのは困難であり、そのうえ電熱線の密度、例えばコ
イルピッチを変え、電熱線の抵抗価を変えると、出力エ
ネルギーが電熱線の総抵抗に反比例し、必要なエネルギ
ー密度が得られなくなる。
また融着時間を変えるのも加熱不足や過加熱を来たしが
ちとなり好ましくない。
本発明は、必要な出力エネルギーを得るためのエレクト
ロフュージョン継手の設計が容易に行えるようにするこ
とを目的としてなされたものである。
課題の解決手段 本発明は、継手の種類や口径により電圧を変えることに
よって上記の目的を達成しようとするものである。
すなわち本発明は、プラスチック管を連結するのに使用
され、管との接触面に電熱線を埋設したエレクトロフュ
ージョン継手の融着方法において、継手の種類や電圧に
応じて設定された電圧を付与することを特徴とするもの
である。
作用 電熱線の固有抵抗は変えなくても電圧を変えることによ
り出力エネルギーが変わり、必要なエネルギー密度が得
られる。
実施例 第１図に示すソケット継手と第２図に示すキャップ継手
を同線材の電熱線を使用し、同一ピッチで設計した場合
、キャップ継手の電熱線の総抵抗は１／２となるが、電
圧を１／２にすることによりソケット継手の１／２の総
エネルギーを生じることが可能となる。したがって、第
１図に示すようなソケット継手において、融着面積が１
．５倍のサイスのもので、同線材の電熱線を使用し、同
ピンチで設計すると、電熱線の総抵抗は１．５倍となり
、与える電圧は１．５倍となる。
発明の効果 本発明は以上のように、継手の種類や口径に応じて電圧
を変え、継手に付与されるエネルギーをコントロールで
きるようになっているもので、電熱線の抵抗値の如何に
か＼わらず適正なインプットエネルギーを付与し、必要
なエネルギー密度を与えることができ、そのために必要
な電熱線についての条件設定を容易に行うことができる
。
【図面の簡単な説明】
第１図はソケット継手、第２図はキャップ継手の正面図
をそれぞれ示す。 出願人　三井石油化学工業株式会社

Claims (1)

    【特許請求の範囲】
  1. プラスチック管を連結するのに使用され、管との接触面
    に電熱線を埋設したエレクトロフュージョン継手の融着
    方法において、継手の種類や口径に応じて設定された電
    圧を付与することを特徴とするエレクトロフュージョン
    継手の融着方法。
JP21466090A 1990-08-13 1990-08-13 エレクトロフュージョン継手の融着方法 Expired - Lifetime JP2847686B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21466090A JP2847686B2 (ja) 1990-08-13 1990-08-13 エレクトロフュージョン継手の融着方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21466090A JP2847686B2 (ja) 1990-08-13 1990-08-13 エレクトロフュージョン継手の融着方法

Publications (2)

Publication Number Publication Date
JPH0497830A true JPH0497830A (ja) 1992-03-30
JP2847686B2 JP2847686B2 (ja) 1999-01-20

Family

ID=16659452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21466090A Expired - Lifetime JP2847686B2 (ja) 1990-08-13 1990-08-13 エレクトロフュージョン継手の融着方法

Country Status (1)

Country Link
JP (1) JP2847686B2 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015008028A1 (en) * 2013-07-18 2015-01-22 Pioneer Lining Technology Limited Improved electrofusion fittng methods

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160822A (ja) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd 電気溶着装置
JPS63160820A (ja) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd 電気溶着装置
JPH0167022U (ja) * 1987-10-22 1989-04-28
JPH01172692A (ja) * 1987-12-25 1989-07-07 Mitsui Petrochem Ind Ltd エレクトロフュージョン継手の接合方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63160822A (ja) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd 電気溶着装置
JPS63160820A (ja) * 1986-12-24 1988-07-04 Sekisui Chem Co Ltd 電気溶着装置
JPH0167022U (ja) * 1987-10-22 1989-04-28
JPH01172692A (ja) * 1987-12-25 1989-07-07 Mitsui Petrochem Ind Ltd エレクトロフュージョン継手の接合方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015008028A1 (en) * 2013-07-18 2015-01-22 Pioneer Lining Technology Limited Improved electrofusion fittng methods
US10047892B2 (en) 2013-07-18 2018-08-14 Pioneer Lining Technology Limited Electrofusion fitting methods
EP3556542A1 (en) * 2013-07-18 2019-10-23 Pioneer Lining Technology Limited Improved electrofusion fitting methods
US10533690B2 (en) 2013-07-18 2020-01-14 Pioneer Lining Technology Limited Electrofusion fitting methods

Also Published As

Publication number Publication date
JP2847686B2 (ja) 1999-01-20

Similar Documents

Publication Publication Date Title
GB1577650A (en) Coupling and method for connecting two tubular members by welding
CA1193641A (en) Bifilar resistance element, heating element made therefrom, and process for preparing heating element made therefrom
US4842305A (en) Pipe joint connecting plastic pipes and process of making such joint
US4117311A (en) Electric welding muff
US5921587A (en) Fusion jointing of plastic pipes
AU697840B2 (en) A coil structure
US6131954A (en) Weldable couple for electrofusion coupling of profile wall thermoplastic pipes without a separate coupler
US5820720A (en) Method of and apparatus for electrofusion coupling of thermoplastic pipes
JPS6141292B2 (ja)
US5328210A (en) Polyolefin coupler for joining polyolefin pipes
US20010048223A1 (en) Method of and joint for coupling thermoplastic pipes
JP2009526171A (ja) ネジ山による加圧構造を有する電気融着用配管装置
US4530520A (en) Electrically weldable bushings
JPS61258726A (ja) 管壁に管軸方向の通孔が並設された樹脂管の通孔閉塞方法
GB2282201A (en) Thermoplastic welding sleeve
JPH02270536A (ja) 溶融性プラスチツク材料の物理的状態変化検知装置
JPH0497830A (ja) エレクトロフュージョン継手の融着方法
AU7304687A (en) Heat-recoverable devices
JPH06278211A (ja) ワークコイルおよび誘導融着システム
AU2172099A (en) Method of joining plastics pipes by heat fusion
JPH08200581A (ja) プラスチック管の融着方法
JP2556772Y2 (ja) プラスチック製管継手
JPH0230517A (ja) 溶着継手
SU1004129A1 (ru) Устройство дл нагрева при стыковой сварке термопластичных труб
JPH0648237Y2 (ja) 溶着継手

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081106

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081106

Year of fee payment: 10

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081106

Year of fee payment: 10

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091106

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091106

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101106

Year of fee payment: 12

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101106

Year of fee payment: 12