DE939719C - Rohr aus nichtschweissbarem Kunststoff - Google Patents

Rohr aus nichtschweissbarem Kunststoff

Info

Publication number
DE939719C
DE939719C DER14824A DER0014824A DE939719C DE 939719 C DE939719 C DE 939719C DE R14824 A DER14824 A DE R14824A DE R0014824 A DER0014824 A DE R0014824A DE 939719 C DE939719 C DE 939719C
Authority
DE
Germany
Prior art keywords
weldable plastic
weldable
pipe
plastic
end collars
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.)
Expired
Application number
DER14824A
Other languages
English (en)
Inventor
Heinrich Dr-Ing Hofmeier
Heinrich Dipl-Chem Dr Klas
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.)
Phoenix Rheinrohr AG
Original Assignee
Phoenix Rheinrohr AG
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 Phoenix Rheinrohr AG filed Critical Phoenix Rheinrohr AG
Priority to DER14824A priority Critical patent/DE939719C/de
Application granted granted Critical
Publication of DE939719C publication Critical patent/DE939719C/de
Expired 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
    • 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
    • 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
    • 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
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B29C65/42—Applying molten plastics, e.g. hot melt between pre-assembled parts
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • 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
    • B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162—Single bevel to bevel joints, e.g. mitre 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
    • B29C66/50—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
    • B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
    • B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
    • 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
    • B29C66/70—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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/721—Fibre-reinforced materials
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7394—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/02—Welded joints; Adhesive 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • 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
    • B29C66/70—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
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

Die Erfindung bezieht sich auf die Herstellung von Rohrleitungen zum Fortleiten vornehmlich aggressiver Medien aus Rohren aus einem nichtschweißbaren Kunststoff und hier in Sonderheit auf die Gestaltung der Rohrenden, um sie schweißbar zu machen und damit die einzelnen Rohre zur Rohrleitung miteinander verschweißen zu können.
Zum Fortleiten aggressiver Medien werden vielfach Rohrleitungen verwendet, deren Rohre aus einem schweißbaren Kunststoff bestehen. Hierfür wurden bisher in erster Linie die thermoplastischen Werkstoffe Polyvinylchlorid und Polyäthylen verwendet, die eine hervorragende Schweißbarkeit besitzen, so daß die einzelnen Rohre durch Schweißen zu einer absolut dichten Rohrleitung miteinander verbunden werden können. In letzterer Zeit werden aber auch in steigendem Maße zum Fortleiten aggressiver Medien Rohre aus nichtschweißbaren Kunststoffen zu Rohrleitungen verwendet, da nichtschweißbare Kunststoffe in bestimmten Fällen in chemischer Hinsicht geeigneter als schweißbare Kunststoffe sind. Insbesondere auch eignen sich nichtschweißbare Kunststoffe für die Einlagerung von Verstärkungen in die Rohre in Form von Geweben, Vließen und Schnüren, vorzugsweise aus Glasfaser, wodurch dem Rohr eine überragende Festigkeit verliehen wird.
Zu den nichtschweißbaren Kunststoffen gehören als thermoplastische Kunststoffe in erster Linie die
Cellulosederivate und als härtbare Kunststoffe vor allem die Polyesterharze und die Äthoxylinharze. Rohre aus den erwähnten Kunststoffen lassen sich also nicht durch Schweißen miteinander verbinden. Wenn auch Rohre aus diesen Kunststoffen durch Verkleben, Verkitten oder sonstwie, gegebenenfalls unter Verwendung von Paß- und Überschiebestücken oder mit Hilfe von gummigedichteten Überschiebmuffen, zur Rohrleitung miteinander verbunden ίο werden können, so stellen doch derartige Verbindungen keine absolut dichte Verbindung dar. Dies wirkt sich in vielen Fällen als nachteilig aus, wo es auf eine gute und dichte Verbindung ankommt, wie es die Schweißverbindung darstellt.
Gegenstand der vorliegenden Erfindung ist nun der Gedanke, die Enden der Rohre eines nichtschweißbaren Kunststoffes mit einem schweißbaren Kunststoff zu versehen und dadurch schweißbar zu gestalten, um auf diese Weise die Rohre zur Rohrleitung miteinander verschweißen zu können. Dabei ist der nichtschweißbare, aus chemischen oder Festigkeitsgründen bevorzugte Kunststoff der eigentliche Träger der Rohrfunktion, während der schweißbare Kunststoff an den Enden der Rohre aus nichtschweißbarem Kunststoff vornehmlich zur Aufnahme der Schweißnaht dient und so von dem nichtschweißbaren Kunststoffrohr getragen wird, daß er nicht oder nach Möglichkeit nur wenig mit dem die Rohrleitung durchströmenden Medium in Berührung kommt. In der Zeichnung sind die Enden zweier Rohre aus nichtschweißbarem Kunststoff mit hierauf aufgebrachten Enden aus schweißbarem Kunststoff in zwei verschiedenen Ausführungsmöglichkeiten schematisch im Längsschnitt veranschaulicht, womit jedoch noch nicht alle Ausführungsmöglichkeiten erschöpft sind.
Fig. ι zeigt die erste Ausführung. Mit 1 sind die beiden Rohre aus nichtschweißbarem aber sehr festem Kunststoff, beispielsweise aus glasverstärktem Polyesterharz, bezeichnet, deren Enden mit einem Bund 2 aus einem schweißbaren Kunststoff, beispielsweise aus Polyvinylchlorid, zug- und druckfest umgeben sind. Die Bunde 2 sind hier vorn abgeschrägt, um die beiden Rohre 1 in üblicher Weise durch V-Nahtschweißung miteinander dicht verbinden zu können. Die Stärke der Bunde 2 und damit die Festigkeit der Schweißnaht 3 ist so bemessen, daß alle vorkommenden und bei den nichtschweißbaren Kunststoffrohren zulässigen Drücke von der Schweißnaht 3 aufgenommen werden können. Um zu verhindern, daß der schweißbare Kunststoff der Bunde 2 mit dem die Leitung durchströmenden aggressiven Medium in Berührung kommt, kann zwischen den beiden Rohren stirnseitig eine Dichtung 4 eingelegt werden. Die Bunde 2 selbst können durch Aufkleben, Aufschrauben, durch Pressen oder sonstwie in an sich bekannter Weise, auf die Rohrenden 1 aufgebracht werden.
Fig. 2 zeigt die zweite Ausführungsform. Diese besteht im wesentlichen aus den gleichen Teilen wie die der Fig. 1, nur daß hier die Verbindungsstelle zwischen den Bunden 5 und den Rohren 6 abgeschrägt ist. Durch die Abschrägung wird bei an sich niedriger Bundhöhe die für die Herstellung einer guten V-Nahtschweißung notwendige Höhe zwischen den beiden Bunden 5 erzielt. Die Befestigung der Bunde 5 auf den Rohren 6 ist die gleiche wie die der Fig. 1.
Das Aufbringen und Befestigen der Bunde oder sonstigen Ansatzstücke aus schweißbarem Kunststoff kann bei glatten Rohren, wie sie beispielsweise auf der Strangpresse erzeugt werden, in der Werkstatt oder auch auf der Baustelle erfolgen, so daß die Möglichkeit des Ablängens der Rohre zum Zwecke der Anpassung auf der Baustelle gegeben ist. Eine hervorragende Verbindung zwischen dem Rohr und dem Bund bzw. dem Ansatzstück wird erzielt, wenn man erfindungsgemäß den Bund oder das Ansatz- '75 stück schon bei der Fertigstellung des Rohres auf dieses aufbringt, wie dies bei der Herstellung von Rohren aus Polyesterharzen oder Äthoxylinharzen mit Verstärkungseinlagen im Schleuderverfahren möglich ist. Zu diesem Zwecke wird ein entsprechender Formteil aus schweißbarem Kunststoff in eine entsprechende Aussparung oder Ausformung der Schleuderkokille eingebracht, wonach die polymerisierbare Harzmasse eingebracht und durch Schleudern zum Rohr geformt wird. Infolge der guten Haftung zwischen der polymerisierenden Harzmasse und dem schweißbaren Kunststoff ist eine außerordentlich gute Verbindung und Haftung gewährleistet.
Durch Anbringen von Gewindegängen, Nocken oder ähnlichem kann die erforderliche Abstreiffestigkeit in der Verbindungsstelle in allen Fällen erzielt werden.
Der Erfindungsgedanke soll sich nicht auf die beiden dargestellten Ausführungsmöglichkeiten beschränken, sondern alle Ausführungsmöglichkeiten erfassen, die sich aus der. Vereinigung von Rohren aus nichtschweißbarem Kunststoff mit einem Endbund oder Endstück aus einem schweißbaren Kunststoff ergeben.
Das Verschweißen der Endbunde oder Endstücke der Rohre kann außer durch die erwähnte V-Nahtschweißung mit Zusatzdraht in bekannter Weise durch Preß-Stumpfschweißung, durch Hochfrequenzschweißung oder sonstwie erfolgen.
Als nichtschweißbare Kunststoffe für die Rohrherstellung kommen außer den Cellulosederivaten vor allem die Polyesterharze und die Äthoxylinharze in Frage, jedoch können auch andere härtbare Kunstharze, wie die Phenoplaste, hierfür Verwendung finden. Als schweißbare Kunststoffe kommen vor allem Hartpolyvinylchlorid, Polystyrol, Acrylate und Polyäthylen in Betracht.

Claims (7)

PATENTANSPRÜCHE:
1. Rohr aus nichtschweißbarem Kunststoff mit oder ohne innere Verstärkungseinlagen für die Herstellung von Rohrleitungen zum Fortbewegen vornehmlich aggressiver Medien, dadurch gekennzeichnet, daß es an seinen Enden Ansatzstücke, Endbunde od. dgl. aus schweißbaren Kunststoffen aufweist, die eine Schweißverbindung der einzelnen iao Rohre miteinander ermöglichen.
2. Rohr nach Anspruch 1, dadurch gekennzeichnet, daß die Stärke der an den Rohrenden angebrachten Ansatzstücke oder Endbunde aus schweißbaren Kunststoffen der hierin auftretenden Druckbeanspruchung angepaßt ist.
3· Rohr nach Anspruch ι oder 2, dadurch gekennzeichnet, daß die Teile aus schweißbarem Kunststoff durch eine Dichtungslage gegen die das Rohr durchströmenden Medien geschützt sind.
4. Verfahren zur Herstellung von Rohren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ansatzstücke oder Endbunde aus schweißbarem Kunststoff durch Verkleben, Verschrauben, Aufpressen oder sonstwie mit dem Rohr aus nichtschweißbarem Kunststoff zug- und druckfest verbunden und abgedichtet sind.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Ansätze oder Endbunde aus schweißbarem Kunststoff durch angebrachte Gewindegänge, Nocken od. dgl. eine erhöhte Festigkeit gegen Abstreifen vom Rohr aus nichtschweißbarem Kunststoff besitzen.
6. Verfahren nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß das Anbringen der Ansatzstücke oder Endbunde aus schweißbarem Kunststoff auf dem Rohr aus nichtschweißbarem Kunststoff mit der Herstellung der Rohre nach dem Schleuderverfahren erfolgt.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Ansatzstücke oder Endbunde aus schweißbarem Kunststoff vor Beginn des Rohrschleuderverfahrens in entsprechende Aussparungen oder Ausformungen der Schleuderkokille eingelegt werden.
Hierzu 1 Blatt Zeichnungen
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DER14824A 1954-08-10 1954-08-11 Rohr aus nichtschweissbarem Kunststoff Expired DE939719C (de)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946525A (en) * 1987-12-03 1990-08-07 Compagnie Generale Des Etablissements Michelin - Michelin & Cie Process for the butted connecting of the edges of a rubberized fabric intended for the manufacture of a carcass reinforcement, and the tire with radial carcass reinforcement obtained thereby
DE102015109183A1 (de) 2015-06-10 2016-12-15 Fachhochschule Schmalkalden Verfahren zum Verbinden von zwei Fügepartnern aus Kunststoff
WO2022020323A1 (en) * 2020-07-20 2022-01-27 Saudi Arabian Oil Company Apparatus and method for friction welding of reinforced thermosetting resin pipe joints
WO2022020309A1 (en) * 2020-07-20 2022-01-27 Saudi Arabian Oil Company Apparatus and method for welding reinforced thermosetting resin pipe joints by induction heating
US11761571B2 (en) 2020-07-20 2023-09-19 Saudi Arabian Oil Company Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946525A (en) * 1987-12-03 1990-08-07 Compagnie Generale Des Etablissements Michelin - Michelin & Cie Process for the butted connecting of the edges of a rubberized fabric intended for the manufacture of a carcass reinforcement, and the tire with radial carcass reinforcement obtained thereby
DE102015109183A1 (de) 2015-06-10 2016-12-15 Fachhochschule Schmalkalden Verfahren zum Verbinden von zwei Fügepartnern aus Kunststoff
WO2022020323A1 (en) * 2020-07-20 2022-01-27 Saudi Arabian Oil Company Apparatus and method for friction welding of reinforced thermosetting resin pipe joints
WO2022020309A1 (en) * 2020-07-20 2022-01-27 Saudi Arabian Oil Company Apparatus and method for welding reinforced thermosetting resin pipe joints by induction heating
US11754215B2 (en) 2020-07-20 2023-09-12 Saudi Arabian Oil Company Apparatus and method for friction welding of reinforced thermosetting resin pipe joints
US11761571B2 (en) 2020-07-20 2023-09-19 Saudi Arabian Oil Company Apparatus and method for electrofusion welding of reinforced thermosetting resin pipe joints
US11794418B2 (en) 2020-07-20 2023-10-24 Saudi Arabian Oil Company Apparatus and method for threaded-welded reinforced thermosetting resin pipe joints

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