JPS62292419A - 熱絶縁された導管のためのソケツト結合部を製造する際の熔接工程の制御方法と装置 - Google Patents

熱絶縁された導管のためのソケツト結合部を製造する際の熔接工程の制御方法と装置

Info

Publication number
JPS62292419A
JPS62292419A JP62139086A JP13908687A JPS62292419A JP S62292419 A JPS62292419 A JP S62292419A JP 62139086 A JP62139086 A JP 62139086A JP 13908687 A JP13908687 A JP 13908687A JP S62292419 A JPS62292419 A JP S62292419A
Authority
JP
Japan
Prior art keywords
temperature
welding
resistance wire
socket
resistance
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.)
Pending
Application number
JP62139086A
Other languages
English (en)
Inventor
ユルゲン・フリースネル
ペーテル・フーベル
ウエルネル・シチエパネツク
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.)
Kabelmetal Electro GmbH
Original Assignee
Kabelmetal Electro GmbH
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 Kabelmetal Electro GmbH filed Critical Kabelmetal Electro GmbH
Publication of JPS62292419A publication Critical patent/JPS62292419A/ja
Pending 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
    • 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"
    • B29C65/3404—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 type of heated elements which remain in the joint
    • B29C65/342—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 type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3428—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 type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding said at least a single wire having a waveform, e.g. a sinusoidal form
    • 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/229—Other specific patterns not provided for in B29C66/221 - B29C66/227
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7232—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer
    • B29C66/72321—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a non-plastics layer consisting of metals or their alloys
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
    • 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
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91221—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the parts to be joined
    • 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
    • B29C66/9141—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 temperature
    • B29C66/91411—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 temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • B29C66/9141—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 temperature
    • B29C66/91441—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 temperature the temperature being non-constant over time
    • B29C66/91443—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 temperature the temperature being non-constant over time following a temperature-time profile
    • 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
    • B29C66/91641—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 the heat or the thermal flux being non-constant over time
    • B29C66/91643—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 the heat or the thermal flux being non-constant over time following a heat-time profile
    • 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
    • B29C66/91655—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 current intensity
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • 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
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91951—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-time diagrams
    • 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
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1931—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of one space
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/22—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element being a thermocouple
    • 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"
    • B29C65/3404—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 type of heated elements which remain in the joint
    • B29C65/342—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 type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • B29C65/3432—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 type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • 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
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/949—Measuring or controlling the joining process by measuring or controlling the time characterised by specific time values or ranges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid
    • B29L2023/225—Insulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Remote Sensing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Branch Pipes, Bends, And 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】 ３、発明の詳細な説明 この発明は、熱絶縁された導管のためのソケット結合部
を製造する際の熔接工程の制御方法であって、結合箇所
を外管端部上に載置されたソケットによって被い、プラ
スチックから成るソケットを同じくプラスデックから成
る外管の端部に溶接し、ソケットと外管の間の各間隙に
蛇行形状または螺旋形状の一本または複数本の抵抗線を
挿入し、これらの抵抗線が通電時に相互に溶接すべきソ
ケットと外管の表面を熔接可能な状態にし、加圧加温下
でそれらの表面の溶接を行う、方法に関する。　西トイ
７国実用新案第号８２０４３７２明細書から、プラスデ
ック製外管の端部をプラスチックソケットにより彼っで
ある熱絶縁導管のソケット結合部が知られている。この
結合部ではソケットを有する外管の端部とソケットの長
手スリットが相Ｌｆに溶接されている。溶接は外管の端
部とソケットの間に蛇行していて通電時境界を接する面
を溶解する抵抗線によって実施されていて、従って溶接
は加圧の下に実施することができる。この種の溶接には
、たとえば溶接範囲中の過熱によってプラスチックが分
解し、整然とした熔接線にならない危険がある。他面温
度が低すぎても溶接は行なわれない。熔接線の温度に影
響するものとしてはたとえば風、周囲の気温、太陽など
があるこの発明の基本課題は、これらの環境の影響を遮
断し、永久的に固定される熔接線を達成することにある
。
この課題は次のようにして達成される。即ち通電中抵抗
線の温度を常に測定し、同時に二つの隣接する蛇行巻線
または並列している抵抗線間の中心の温度を測定し、そ
の際抵抗線の温度を限定してプラスデックの分解温度の
直ぐ下の温度である抵抗線の最高温度をこえないように
し、蛇行巻線または抵抗線間の領域の熔融池温度を加熱
能力の基準値として使用するのである。このような構成
によって、ブラスヂ１りの加熱が確実に回避され溶接す
べき面を常に熔接可能な状態にするごとが確実になる。
特に有利なのは熔接温度が少なくとも１０秒間にわたっ
てほぼ一定に保たれることである。これは、熔接温度を
３０〜１８０秒間ほぼ一定に保もてば更に確実になる。
抵抗線温度は、電流の強さを最大値から熔接温度に対応
する値まで連続的に引き下げれば加熱能力が変化して好
都合に制御される。実際には加熱能力は極めて速く最大
値に設定され、電流の強さの引き下げ制御によって抵抗
線温度がある時間の間ほぼ一定に保たれる。抵抗線温度
が最大値になった後融解物の温度は電流強度の制御基準
として利用され、その際抵抗線温度は最大値に限定され
る。その場合制御はマイクロプロセッサにより行うのが
好都合である。ポリエチレンの部分の熔接の際は最高抵
抗線温度が２８０°となり、熔接温度が１４０〜１６０
°に定められる。
この発明は更に前記方法を実施するための装置にも関す
るものである。即ち熔接変圧器と、熔接すべき表面の間
に蛇行している抵抗線または並列してある抵抗線とから
成る熔接変圧器から成る装置であって、抵抗線の端部が
熔接変圧器に連結してある。この発明はこのような装置
において、装置中に三箇所の測定位置によって制御され
るマイクロプロセッサを接続してあり、前記測定位置の
内一箇所は抵抗線にまたは複数本の抵抗線にあり他の一
箇所は抵抗線の二つの隣接する巻線の間で熔接箇所の領
域にあり、三箇所の熔接位置は導管を介してマイクロプ
ロセッサに連結してある。
温度の測定にはサーモエレメントを用いるのが有利であ
る。サーモエレメントの一つは抵抗線と伝熱結合、特に
ろうづけまたは熔接してある。選択的にサーモエレメン
トは抵抗線にクランプによって固定することができる。
抵抗線の測定位置とマイクロプロセッサの間には電位的
に分離された測定値増幅器を接続しておくのが有利であ
る。このようにして、マイクロプロセッサが高圧によっ
て損傷するのを阻止した方がよい。特に直径の大きいソ
ケットの場合、たとえば規格幅が２００ミリメートル以
上の長距離伝熱導管用の結合ソケットには、いくつかの
サーモエレメントを熔融池中に配設するのが好都合であ
ることが分かった。それらのサーモエレメントは周縁に
一様に分散するのがよい。熔融池温度を測定するサーモ
エレメントは溶融地の外側に固定してある。このように
して圧力とプラスチックの軟化によってサーモエレメン
トの移動が行なわれる。サーモニレメンＩ・が移動する
と、即し測定位置と抵抗線の間の間隔が変化することに
よって溶融地の正確な温度測定は最早不可能になる。同
じ理由から溶融地のための測定位置を囲む蛇行部は少な
くとも三箇所で、特に蛇行部の領域で溶融地の外側に置
かれた固定要素によって固定される。このようにして確
実に、圧力のために蛇行部まで熔融池中で移動するのが
阻止される。
螺旋状に延在する抵抗線または周方向に並列する抵抗を
使用することによってサーモエレメントを並列する二本
の巻線または抵抗線の間の中心に設ける。
一実施例を示した図について更に詳記する。
第１図に符号Ｉ及び２で長距離伝熱導管の端部を示して
ある。これらの端部は図示してない媒体案内鋼管、発泡
物質製熱絶縁体、プラスチックジャケット管から成る。
この種の長距離伝熱導管は実際にはプラスチックジャケ
ット管とされ、約６メートルの長さのものが建設現場に
供給され、そこで連結されてパイプラインにしなければ
ならない。個々の長さのものは、内管が発泡物質の両側
から突出していて、その結果二本の管の容易な相互溶接
が可能である。この溶接結合の二次絶縁のために熔接箇
所にわたってプラスチックソケット３を管またはプラス
チック帯の形にして敷設する。
第１図にはソケット３を示してある。このソケットは一
木のプラスデック帯からできており、このプラスチック
帯は、溶接結合部をプラスチックジャケット管１．２の
端部に載せることによって縁４を相互に重ねて溶接結合
部を中心に巻かれている。
ソケット３は媒体管とソケット３の間の環状スリット中
に満たされる発泡物質成分の型として機能し、同時にパ
ツキンとして湿度の侵入を防ぐ。ソケット３は長距離熱
導管ｌと２のプラスデック材料にも重ねられたその縁４
の領域でも熔接されている。そのために蛇行形抵抗線１
４を熔接すべき面の間に挿入してある。この抵抗線は導
線５と６を介して熔接変圧器７に連結されている。この
熔接変圧器には電圧源、たとえば電力網から電気が供給
される。即ち溶接変圧？５７のスイッチオンの後電流は
抵抗線中を流れ、これにより抵抗線は熱をもち境界を接
する面も同様に加熱し、熔接可能な状態になる。詳記は
してない補助手段により圧力が溶接継目に影響して、永
久的な溶接結合が達成される。熔接工程を制御するため
に三箇所の測定位置８と９を設けである。そのうちの一
つ、たとえば８は抵抗線１４の温度を測定し、他の一つ
９は熔融池の温度を測定する。測定位置８と９は導管１
０と１１を介してマイクロプロセッサ１２に連結されて
おり、マイクロプロセッサは加熱能力を制御する。抵抗
線１４の温度は最高値を２８０℃に設定してあり、他方
熔接温度はポリエチレンの場合１４０〜１６０℃にして
ある。
第２図はソケット３の内側表面の平面図である。
ソケット３の熔接すべき縁部要素には溝１３をきってあ
り、この溝の中にポリエチレン箔によって固定された抵
抗線１４が蛇行敷設してある。測定位置８と９はサーモ
エレメントにより形成され、そのうち測定位置８に属す
るサーモエレメントは抵抗線１４にたとえば固定金具１
５によって固定されている。
熔融池温度を測定する測定位置９のサーモエレメントは
二本の蛇行巻線間にある。即ち最低温度が期待できる領
域である。このサーモエレメントはクランプ１６によっ
てソケット３に固定されており、これらのクランプ１６
は溝■３の外側、即ち熔融池の外側にある。このように
して測定位置９は熔接温度で圧力を利用しても固定され
る。抵抗線１４も同様に、ソケット３の溝１３の外側に
固定されているクランプ１７によって、特に蛇行の湾曲
部の領域に固定されている。この固定は測定位置９と抵
抗線１４の間の間隔が熔接温度で圧力の利用の下に一定
に保たれるので好都合である。
第３図には熔接の経過を三本の曲線によって示してある
。曲線Ｃは加熱能力、Ａは抵抗線温度、即ち測定位置８
の値、Ｂは溶接Ｕ目の温度、即ち測定位置９の温度であ
る。横座標には時間を表した。さて熔接変圧器７のスイ
ッチが入ると、加熱能力は最短時間内に最大限になり、
必要に応じて制御される。従って曲線Ａの上昇もまずや
はり急である。２８０℃という最高の抵抗線温度になつ
た後加熱能力は測定位置８の値より高く限定される。曲
線Ｂの上昇は無論曲線Ａの上昇より緩やかである。なん
となれば測定位置９と、境界を接する巻線１４との間の
間隔は比較的大きいからである。約１５０℃という熔接
温度の達成の後加熱能力は制御されて、測定位置９の温
度は約３０〜５０秒間にわたって一定に保たれる。熔接
工程の終了後マイクロプロセッサ１２は熔接変圧器７の
スイッチを切り、溶接継目は次第に冷却する。
実施例は蛇行形状の抵抗線であったが、しかし周方向に
螺旋状に成形された抵抗線を管と管の間の環状間隙に入
れである場合もこの発明は有利に実施できる。周方向に
何本もの抵抗線を並列配置することも可能である。そう
なると熔融池温度を測定するサーモエレメントは並列す
る二本の巻線の間の中心に配設される。
【図面の簡単な説明】
第１図は長距離伝熱導管の端部を示し、第２図はソケッ
ト３の内側表面の平面図であり、第３図は熔接の過程を
示す三本の曲線を示す。 図中符号 １．２・・・長距離伝熱導管の端部、３・・・ソケット
、４・・・帯緑、５．６，１０．１１・・・導管、７・
・・熔接変圧器、８．９・・・測定位置、１２・・・マ
イクロプロセッサ、１３・・・ｉ／４．１４・・・抵抗
線、１５固定金具、１６、Ｉ７・・・クランプ。

Claims (1)

  1. 【特許請求の範囲】 １）熱絶縁された導管のためのソケット結合部を製造す
    る際の熔接工程の制御方法であって、結合箇所を外管端
    部上に載置されたソケットによって被い、プラスチック
    から成るソケットを同じくプラスチックから成る外管の
    端部に熔接し、ソケットと外管の間の各間隙に蛇行形状
    または螺旋形状の一本または複数本の抵抗線を挿入し、
    これらの抵抗線が通電時に相互に熔接すべきソケットと
    外管の表面を熔接可能な状態にし、加圧加温下でそれら
    の表面の熔接を行う、方法において、通電中抵抗線の温
    度を常に測定し、同時に二つの隣接する蛇行巻線または
    並列している抵抗線間の中心の温度を測定し、その際抵
    抗線の温度を限定してプラスチックの分解温度の直ぐ下
    の温度である抵抗線の最高温度をこえないようにし、蛇
    行巻線または抵抗線間の領域の熔融池温度を加熱能力の
    基準値として使用することを特徴とする、方法。 ２）熔接温度を少なくとも１０秒間ほぼ一定に保つ、特
    許請求の範囲１）に記載の方法。 ３）熔接温度を３０〜１８０秒間ほぼ一定に保つ、特許
    請求の範囲１）または２）に記載の方法。 ４）電流の強さを最大値から熔接温度に対応する値まで
    連続的に引き下げることによって加熱能力を変化させて
    抵抗線温度を制御する、特許請求の範囲１）〜３）のい
    ずれか一に記載の方法。 ５）融解温度を加熱能力の制御基準として利用し、抵抗
    線温度を最大値に限定する、特許請求の範囲１）〜４）
    のいずれか一に記載の方法。 ６）制御をマイクロプロセッサにより行う、特許請求の
    範囲１）〜５）のいずれか一に記載の方法。 ７）最大の抵抗線温度を２８０℃とし、熔接温度を１４
    ０〜１６０℃に定める、ポリエチレン製部分を熔接する
    ための特許請求の範囲１）〜６）のいずれか一に記載の
    方法。 ８）熔接変圧器と、熔接すべき表面の間に蛇行している
    抵抗線または並列してある抵抗線とから成る熔接変圧器
    から成る装置であって、抵抗線の端部が熔接変圧器に連
    結してある、熔接工程の制御装置において、装置中に二
    箇所の測定位置（８、９）によって制御されるマイクロ
    プロセッサを接続してあり、前記測定位置の内一箇所は
    抵抗線（１４）にまたは複数本の抵抗線にあり、他の一
    箇所は抵抗線（１４）の二つの隣接する巻線の間で熔接
    箇所の領域にあり、二箇所の熔接位置（８、９）は導管
    （１１、１２）を介してマイクロプロセッサ（１２）に
    連結してある、装置。 ９）測定位置（８、９）にサーモエレメントを配設して
    ある、特許請求の範囲８）に記載の装置。 １０）サーモエレメントの一つが抵抗線（１４）と伝熱
    結合、特にろうづけまたは熔接してある、特許請求の範
    囲９）に記載の装置。 １１）サーモエレメントの一つが固定金具（１５）によ
    って抵抗線（１４）に連結している、特許請求の範囲９
    ）に記載の装置。 １２）抵抗線（１４）の測定位置（８）とマイクロプロ
    セッサ（１２）との間に電位的に分離された測定値増幅
    器を接続してある、特許請求の範囲８）〜１１）のいず
    れか一に記載の装置。 １３）複数個のサーモエレメントを熔融池に配設してあ
    る、特許請求の範囲８）〜１２）のいずれか一に記載の
    装置。 １４）熔融池温度を測定するサーモエレメントを熔融池
    の外側に固定してある、特許請求の範囲８）〜１３）の
    いずれか一に記載の装置。 １５）熔融池温度の測定位置を囲む蛇行部が少なくとも
    三点で特に蛇行部の湾曲の範囲で熔融池の外側に置かれ
    た固定要素（１７）によって固定されている、特許請求
    の範囲８）〜１４）のいずれか一に記載の装置。
JP62139086A 1986-06-05 1987-06-04 熱絶縁された導管のためのソケツト結合部を製造する際の熔接工程の制御方法と装置 Pending JPS62292419A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3619006.3 1986-06-05
DE3619006 1986-06-05

Publications (1)

Publication Number Publication Date
JPS62292419A true JPS62292419A (ja) 1987-12-19

Family

ID=6302392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62139086A Pending JPS62292419A (ja) 1986-06-05 1987-06-04 熱絶縁された導管のためのソケツト結合部を製造する際の熔接工程の制御方法と装置

Country Status (10)

Country Link
JP (1) JPS62292419A (ja)
KR (1) KR880000219A (ja)
CN (1) CN87102675A (ja)
DK (1) DK291187A (ja)
FI (1) FI872513A (ja)
FR (1) FR2607057A1 (ja)
GB (1) GB2191146A (ja)
IT (1) IT1206014B (ja)
NL (1) NL8701310A (ja)
SE (1) SE8702326L (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995016557A2 (en) * 1993-12-15 1995-06-22 Tokushu, Kogyo Kabushikigaisha Electrofusion fastening apparatus
GB2294898B (en) * 1994-09-26 1998-03-18 Toa Kokyu Tugitevarubu Seizo C A method of automatically controlling the fusion process between thermoplastic articles
CA2225479A1 (en) * 1995-06-28 1997-01-16 Raymond Allan Goldsmid Element for fusion welding plastics
SE529741C2 (sv) * 2005-01-17 2007-11-13 Sandvik Intellectual Property Förfarande för termisk isolering av svetsfog samt hylsa därför
SE534975C2 (sv) * 2009-10-16 2012-03-06 Tsc Innovation Ab Förfarande vid och anordning för installation och reparation av isolerade ledningsrör

Also Published As

Publication number Publication date
SE8702326L (sv) 1987-12-06
FI872513A0 (fi) 1987-06-04
GB8713118D0 (en) 1987-07-08
NL8701310A (nl) 1988-01-04
DK291187D0 (da) 1987-06-04
DK291187A (da) 1987-12-06
IT1206014B (it) 1989-04-05
CN87102675A (zh) 1987-12-16
IT8748019A0 (it) 1987-06-04
GB2191146A (en) 1987-12-09
FR2607057A1 (fr) 1988-05-27
FI872513A (fi) 1987-12-06
SE8702326D0 (sv) 1987-06-04
KR880000219A (ko) 1988-03-24

Similar Documents

Publication Publication Date Title
KR102444335B1 (ko) 폴리에틸렌 파이프라인의 전기융합을 위한 장치 및 시스템
US4436988A (en) Spiral bifilar welding sleeve
JP2687994B2 (ja) フィッティング及びフィッティングを用いる管継ぎ目
EP0258827B1 (en) A method for connecting a plastic pipe end to a plastic welding sleeve
JPH03213327A (ja) 加熱されると溶融するプラスチック製の配管部材を融接する方法およびそれに使用する連結スリーブ
EP0160536A2 (en) A Fusion pad
JPS62292419A (ja) 熱絶縁された導管のためのソケツト結合部を製造する際の熔接工程の制御方法と装置
ATE95113T1 (de) Schweisselement zum verschweissen stumpfgestossener rohre aus kunststoff.
DE69709713D1 (de) Verfahren und vorrichtung zum zusammenfügen, reparieren und wartung von mit einer isolierschicht versehenen rohren
JP2834842B2 (ja) 熱収縮性被覆材の接着装置
PL203692B1 (pl) Sposób wytwarzania szczelnego względem wilgoci połączenia między końcami dwóch rur z tworzywa sztucznego
WO1995025243A1 (en) Wraparound cover
JPH10238677A (ja) 保温二重管の接続構造およびその接続方法
ES2023167B3 (es) Conexion de manguitos para tubos de conduccion aislantes de calor
JPH01158288A (ja) 管継手
JP2699161B2 (ja) 熱可塑性樹脂製品の融着方法
JPH06185688A (ja) 加熱用プレート
JP3764522B2 (ja) エレクトロフュージョン継手とその製造法
JPH0425840Y2 (ja)
JPH0116310Y2 (ja)
JPS58146104A (ja) 漏洩同軸ケ−ブルの製造方法
SE460683B (sv) Elektriskt vaermbart band foer framstaellning av en muffoerbindning foer vaermeisolerade ledningsroer samt saett att framstaella bandet
KR200219024Y1 (ko) 수지관 융착접합시트
JPS63111394A (ja) 電気融着式プラスチツク管の接続方法
JPS60208693A (ja) パイプラインの加熱方法