PT95460A - WELDING SLEEVE AND ITS MANUFACTURING PROCESS - Google Patents

WELDING SLEEVE AND ITS MANUFACTURING PROCESS Download PDF

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Publication number
PT95460A
PT95460A PT95460A PT9546090A PT95460A PT 95460 A PT95460 A PT 95460A PT 95460 A PT95460 A PT 95460A PT 9546090 A PT9546090 A PT 9546090A PT 95460 A PT95460 A PT 95460A
Authority
PT
Portugal
Prior art keywords
sleeve
welding
reinforcing layer
thermoplastic material
sleeve body
Prior art date
Application number
PT95460A
Other languages
Portuguese (pt)
Inventor
Thomas Strauch
Alfred Thalmann
Original Assignee
Georg Fischer Aktiengeselschaf
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 Georg Fischer Aktiengeselschaf filed Critical Georg Fischer Aktiengeselschaf
Publication of PT95460A publication Critical patent/PT95460A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D23/00—Producing tubular articles
    • B29D23/001—Pipes; Pipe joints
    • B29D23/003—Pipe joints, e.g. straight joints
    • B29D23/005—Pipe joints, e.g. straight joints provided with electrical wiring
    • 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
    • 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
    • B29C66/01—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
    • B29C66/50—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
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/522—Joining tubular articles
    • B29C66/5229—Joining tubular articles involving the use of a socket
    • B29C66/52295—Joining tubular articles involving the use of a socket said socket comprising reinforcements
    • 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
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • 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"
    • B29C65/3468—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 means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of 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
    • B29C66/72—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Ropes Or Cables (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

A welding muff comprises a thermoplastic, tubular muff body (1) which has a heating wire winding on its inner surface. A reinforcing layer connected to the muff body (1) by interpenetration of the material or by interlocking has a high rigidity which ensures that the welding pressure is absorbed during welding and the service life is prolonged.

Description

71 51071 510

2668/VS2668 / VS

MEMÓRIA......DESCRITIVA 0 presente invento diz respeito a urna manga de soldadura de acordo com a parte genérica da reivindicação 1 e a um processo para o seu fabrico,.The present invention relates to a welding sleeve according to the generic part of claim 1 and to a process for its manufacture.

As mangas de soldadura do tipo mencionado são utilizadas, sobretudo, para a união de tubos» A partir da descrição de patente europeia EP-0222 287 conhece-: £> d/ uma manga. mater i a1 te rmoplástico colocado na ‘o U p 0 rficie pode ser ali inent ado, pai sléctric a „ Na s ;uperf íc ar maçao com a forma di ranhura, ou com a forma de dilatação da armação ; soldadura para a união de tubos de 'ou soldável, com um fio de. aquecimento :erior sob forma de enrolamento, o qual efectuar a soldadura, com uma corrente exterior da manga de soldadura há uma com a forma de um enrolamento colocado dentro de uma forma de uma peça tubular, sendo o coeficiente •mação menor do que o do corpo da manga»Welding sleeves of the aforesaid type are used, in particular, for joining tubes. From European patent specification EP-0222 287, it is known: > d / a sleeve. the plasmoplast material placed on the surface may be inserted therein, the sheet having a diffractive shape, or the expansion shape of the frame; welding for joining pipes or weldable with a wire of. In the embodiment shown in FIG. 2, there is provided a welding torch with an outer stream of the welding sleeve, in the form of a winding placed inside a form of a tubular part, the coefficient being less than that of the body of the manga »

Por meio desta armação pretende-se aplicar, mesmo quando se utiliza um corpo da manga com quantidade reduzida de material, a pressão de soldadura necessária quando da soldadura. Mas constitui uma desvantagem, após o fabrico do corpo da manga, serem necessárias mais fases de operação, e o enrolamento metálico e o corpo turbular, respectivamente, não resistirem a corrosão, de modo que não é garantida uma armação duradoura da manga s o 1 d a cl u ( a»By means of this frame it is intended to apply, even when using a sleeve body with a reduced amount of material, the welding pressure required upon welding. But it is a disadvantage, after the manufacture of the sleeve body, that more operating phases are required, and the metal winding and the turbine body, respectively, do not resist corrosion, so that a durable sleeve frame is not guaranteed. cl u (a »

Partindo do estado actual da técnica, o presente invento tem por ofojectivo propor uma manga de soldadura do tipo atrás mencionado, na qual seja garantida, mesmo quando se utiliza uma quantidade reduzida de material, uma rigidez duradoura da manga, de modo a esta ser apropriada, durante o processo de aquecimento e de soldadura, para resistir à necessária pressão de soldadura e também, depois de se ter realizado a união de tubos, resistir à pressão causada pelo fluido que passa, nos mesmos,. A manga, de soldadura deve ser resistente à corrosão e fabricável por um processo simples e automático»Starting from the current state of the art, the present invention aims at proposing a welding sleeve of the aforementioned type, in which a durable stiffness of the sleeve is ensured, even when a reduced amount of material is used, so as to be suitable , during the heating and welding process, to withstand the necessary welding pressure and also, after the tubing has been made, to withstand the pressure caused by the fluid passing therethrough. The welding sleeve must be corrosion resistant and can be fabricated by a simple and automatic process »

71 510 2668/VS71 510 2668 / VS

Este problema, é solucionado de acordo com o invento através da parte caracterizante da reivindicação l.This problem is solved according to the invention by the characterizing part of claim 1.

Outros aperfeiçoamentos vantajosos do invento são indicados nas reivindicações dependentes,. 0 invento é representado através de exemplo, nos desenhos anexos, & descritos a seguir, os quais mostram na figura 1 um corte longitudinal de uma forma, de realização da manga soldadura na figura 2 urna variante de realização da manga de soldadura mostrada na figura 1* A figura 1 mostra uma manga de soldadura, cujo corpo 1 consiste num material termoplástico como, por exemplo, polietileno, o qual contém na sua superfície interior 2, de modo em princípio conhecido, um enrolamento de um fio de aquecimento 3, © o qual apresenta, por exemplo, fios de ligação 4 ou ligações encaixáveis para se ligarem a uma fonte de corrente» Na. superfície exterior 5 do corpo da manga 1 há uma camada de reforço 6, a qual apresenta uma resistência mecânica maior do que o corpo da manga 1» A camada de reforço está ligada ao corpo da manga, de preferência, por uma união de interferência de mater ial« reforço São possíveis os seguintes tipos de camadas de integradas no corpo da manga, na sua. superfície exterior. 0 corpo da manga é produzido, como corpo moldado, por moldação por injeeção, ou como segmento tubular, por um processo de extrusão a partir de um material susceptivel a ser reticulado, apresentando dimensões exteriores que incluem a. camada de reforço„ A seguir é gerada a camada de reforço, por urna reacção de reticulação, na qual pode ser aplicado um processo de reticulação químico e/ou físico para se obter o efeito cie reforço numa determinada camada na periferia exterior cio corpo da manga,. ε possível realizar essa reacção de reticulação, por exemplo,Further advantageous improvements of the invention are set forth in the dependent claims. The invention is shown by way of example, in the accompanying drawings, & described below, which show in Figure 1 a longitudinal cross-section of one embodiment of the welding sleeve in Figure 2 a variant embodiment of the welding sleeve shown in Figure 1. Figure 1 shows a welding sleeve, whose body 1 consists of a thermoplastic material such as polyethylene, which contains on its inner surface 2, in principle known, a winding of a heating wire 3, which has, for example, connecting wires 4 or plug-in connections to connect to a current source. the outer surface 5 of the body of the sleeve 1 is a reinforcing layer 6, which has a greater mechanical strength than the body of the sleeve 1. The reinforcing layer is attached to the sleeve body, preferably by an interference fit of The following types of integrated layers are possible in the sleeve body, in its. outer surface. The sleeve body is produced, as a molded body, by injection molding, or as a tubular segment, by an extrusion process from a material susceptible to be crosslinked, having exterior dimensions including a. The reinforcement layer is then generated by a crosslinking reaction in which a chemical and / or physical crosslinking process can be applied to obtain the reinforcing effect in a given layer on the outer periphery of the sleeve body ,. It is possible to carry out this crosslinking reaction, for example,

71 510 2668/VS atra clica expo vês da retieulação de silano, » através da retieulação por f sição aos raios ultravioletas» através da retieulação peroxí~ eixe de electroes ou através da71 510 2668 / VS by exfoliation of silane, by ultraviolet ray deposition by means of peroxidase retention of the electrodes or through

JJ

Unia reacção de retieulação ê, em principio, um processo de endurecimento irreversívelIsto significa que a camada de dureza ou resistência maior produzida pela retieulação não torna a ser plastificada pelo calor gerado pelo fio de aquecimento» Desta forma, a camada de reforço 6 opoe-se ao desvio radial do material da manga durante o processo de soldadura.»A retraction reaction is in principle an irreversible hardening process. This means that the layer of hardness or greater strength produced by the re-settling does not again be plasticized by the heat generated by the heating wire. In this way, the reinforcing layer 6 opposes to radial deviation of the sleeve material during the welding process. '

No caso de o material termoplástico utilizado para o fabrico do corpo da manga não ser apropriado para um bom endurecimento por retieulação, é possível produzir um corpo de manga composto de dois materiais termoplásticos diferentes, sendo o material de fácil retieulação colocado na periferia, numa camada com a espessura necessária, por meio de uma união de interferência, no fabricante do corpo da manga. Este fabrico pode ser realizado pela. injecção conjunta, no caso de se tratar de um corpo moldado por injecção, pela extrusão conjunta, no caso de se tratar de um segmento tubular, ou pela inserção de uma peça correspondente no molde de injecção.In the case where the thermoplastic material used for the manufacture of the sleeve body is not suitable for a good hardening by retieulation, it is possible to produce a sleeve body composed of two different thermoplastic materials, the easily retracting material being placed on the periphery, in a layer with the required thickness, by means of an interference fit, in the sleeve body manufacturer. This manufacture can be carried out by. joint injection, in the case of an injection molded body, by the joint extrusion in the case of a tubular segment, or by the insertion of a corresponding part in the injection mold.

JJ

Um outro tipo da camada de reforço colocada na periferia exterior pode ser a que consiste num material termoplástico reforçado por fibras de vidro ou carbono. Esta camada de reforço 6, a qual apresenta, uma maior rigidez do que o corpo da. manga, é produzida, durante o fabrico do corpo da manga, por injecção conjunta ou por inserção de uma peça no molde de injecção, ficando então ligada ao corpo da manga por uma união de interferência. No caso de o corpo da manga ser um segmento tubular, a produção realiza-se pelo processo de extrusão conjunta. A figura 2 mostra uma disposição da camada de reforço 6, no corpo da manga 1, diferente da da figura 1. ê integrada na zona exterior do corpo da manga 1, e envolvida, de acordo com a figura 2, parte superior, completamente pelo material termoplástico do corpo da manga. 1. 71. 510Another type of the reinforcing layer placed on the outer periphery may be that consisting of a glass or carbon fiber reinforced thermoplastic material. This reinforcing layer 6, which has a higher stiffness than the body of the. sleeve is produced during the manufacture of the sleeve body by injection or by insertion of a part into the injection mold and is then attached to the sleeve body by an interference fit. In the case where the sleeve body is a tubular segment, the production is carried out by the joint extrusion process. Figure 2 shows an arrangement of the reinforcing layer 6 in the body of the sleeve 1, different from that of Figure 1. It is integrated in the outer region of the body of the sleeve 1, and wrapped, according to Figure 2, upper part, completely through the thermoplastic material of the sleeve body. 71. 510

2668/VS2668 / VS

0 corpo da manga é, neste caso, de moldada por injecção, ficando a camada como peça tubular 7, no molde de injecção preferência, uma peça de reforço 6 inserida.;, , durante o processo de fabrico do corpo da manga»The sleeve body is, in this case, injection molded, the layer being a tubular part 7, preferably in the injection mold, a reinforcement piece 6 inserted during the manufacturing process of the sleeve body.

Essa peça tubular pode consistir num material sintético reforçado por fibras de vidro ou carbono, ou num outro material sólido como, por exemplo, metal» Devido ao envolvimento total pelo material termoplástico, não pode haver corrosão»Such a tubular part may consist of a synthetic material reinforced by glass or carbon fibers or another solid material such as metal. Due to the total involvement of the thermoplastic material, there can be no corrosion.

JJ

De acordo com a figura 2, parte inferior, a camada 6 reforçada por fibras de vidro ou carbono fica dentro do corpo da manga 1, que consiste numa segmento tubular, realizando-se a sua produção por extrusão conjunta»According to figure 2, the lower part, the layer 6 reinforced by glass or carbon fibers lies inside the body of the sleeve 1, which consists of a tubular segment, being produced by coextrusion '

As mangas de soldadura acima de preferência, para a união de tubos de pela existência da camada de reforço seritas são utilizadas, de diâmetro maior, e garantem, integrada, a qual apresenta uma rnaior rigidez, aplicando uma quantidade menor de material, a formação de uma pressão de soldadura necessária para uma boa união soldada, assim como também a resistência, suficiente para aguentar os esforços causados pela pressão do fluido por elas e por influências exteriores, durante a que passa duração do serviço»The above-preferred welding seams for the joining of tubes by the existence of the reinforcing layer are used, of larger diameter, and guarantee, integrated, which has a higher rigidity, by applying a smaller amount of material, the formation of a welding pressure required for a good welded joint, as well as the strength sufficient to withstand the stresses caused by the fluid pressure exerted by them and by external influences during which the service lasts'

Pela ligação de união oositiva da camada de reforço iapa.2 de aguentar, além de for· de acção axial, i de interferência e/ou de união ao corpo da manga, essa camada é ?as de acção radial, também forçasBy the positive bonding connection of the backing layer 2, in addition to axial action, of interference and / or attachment to the sleeve body, this layer is radially actionable, also forces

Claims (8)

REIVINDICACSE 1 ~ Manga de soldadura, com um corpo tubular, reforçado com um material termoplástico, que tem na sua superfície interior um enrolamento de um fio de resistência, caracterizada por o corpo de manga (1) apresentar, pelo menos, uma camada de reforço (6) nele integrada, a qual tem uma maior rigidez em relação ao material do corpo de manga (1),.A welding sleeve having a tubular body reinforced with a thermoplastic material having on its inner surface a winding of a resistance wire, characterized in that the sleeve body (1) has at least one reinforcement layer (6) therein, which has a greater rigidity with respect to the material of the sleeve body (1). 2 - Manga de soldadura de acordo com a reivindicação 1, caracterizada por a camada de reforço (6) estar colocada na superfície exterior (5) do corpo da manga (1) e por ficar ligada com este numa união de soldadura.Welding sleeve according to claim 1, characterized in that the reinforcing layer (6) is placed on the outer surface (5) of the sleeve body (1) and is connected therewith to a welding joint. 3 - Manga de soldadura de acordo com a reivindicação 1, caracterizada por a camada de reforço (6) estar colocada no interior do corpo da manga (1), na sua zona exterior e por estar manga (1)., rei vind i caçoes envolvida pelo material termoplástico do corpo daWelding sleeve according to claim 1, characterized in that the reinforcing layer (6) is placed inside the body of the sleeve (1), in its outer zone and in the form of a sleeve (1). by the thermoplastic material of the body of the 4 - Manga de soldadura de acordo com urna das 1 a 3, caracterizada por a camada de reforço (6) consistir num material termoplástico diferente do material do corpo da manga (1). reivindicações consistir numWelding sleeve according to one of the claims 1 to 3, characterized in that the reinforcing layer (6) consists of a thermoplastic material different from the material of the sleeve body (1). claims consist of a 5 - Manga de soldadura de acordo com uma das 1 a 3, caracterizada por a camada de reforço (6) material termoplástico reforçado por fibras.Welding sleeve according to one of Claims 1 to 3, characterized in that the reinforcing layer (6) is fiber reinforced thermoplastic material. 6 - Manga de soldadura de acordo com a reivindicação 3, caracterizada por a camada de reforço (6) consistir numa peça tubular metálica (7).Welding sleeve according to claim 3, characterized in that the reinforcing layer (6) consists of a metal tubular part (7). 7 Processo de fabrico de uma manga de soldadura de acordo com a reivindicação 2, caracterizado por, durante o fabrico, ser gerado um efeito de reforço no material termoplástico, por uma reacção de reticulação. caracterizado ser associada para a reacçãoProcess for manufacturing a welding sleeve according to claim 2, characterized in that, during manufacture, a reinforcing effect is generated in the thermoplastic material by a cross-linking reaction. characterized in that it is associated for the reaction 8 ~ Processo de acordo com a reivindicação 7, por se gerar, durante o fabrico do corpo da manga, uma camada de um material termoplástico apropriado de reticulação, por extrusão ou injecção conjuntas 71 510 2668/VS com a reivindicação 3, no qual o corpo da manga ê fabricado por m o Idagem por i n j e c ção, c a r a c i e r i z a d o p o r s e .1 n ser ir, d u r a n t e o fabrico do corpo da manga, no molde de injecçao, uma peça tubular como camada de reforço, a. qual é coberta por extrusão pelo material termoplástico da peça da manga.A process according to claim 7 in that, during the manufacture of the sleeve body, a layer of a suitable thermoplastic crosslinking material is formed by extrusion or injection together with claim 3, in which the The sleeve body is manufactured by injection molding, characterized in that, during the manufacture of the sleeve body, in the injection mold, a tubular part is used as the reinforcing layer, which is covered by extrusion by the thermoplastic material of the sleeve part. JJ
PT95460A 1989-09-30 1990-09-28 WELDING SLEEVE AND ITS MANUFACTURING PROCESS PT95460A (en)

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EP (1) EP0446314A1 (en)
JP (1) JPH04501986A (en)
AU (1) AU6279490A (en)
BR (1) BR9006940A (en)
CA (1) CA2042367A1 (en)
CS (1) CS473390A3 (en)
DE (1) DE3932807C1 (en)
FI (1) FI912498A0 (en)
GR (1) GR900100705A (en)
HU (1) HUT58600A (en)
NO (1) NO912066D0 (en)
PL (1) PL287101A1 (en)
PT (1) PT95460A (en)
WO (1) WO1991004845A1 (en)
YU (1) YU172090A (en)

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YU172090A (en) 1992-09-07
FI912498A0 (en) 1991-05-23
EP0446314A1 (en) 1991-09-18
NO912066L (en) 1991-05-29
CS473390A3 (en) 1992-01-15
JPH04501986A (en) 1992-04-09
HU907689D0 (en) 1991-08-28
BR9006940A (en) 1991-10-08
AU6279490A (en) 1991-04-28
DE3932807C1 (en) 1991-05-02
WO1991004845A1 (en) 1991-04-18
GR900100705A (en) 1992-01-20
HUT58600A (en) 1992-03-30
CA2042367A1 (en) 1991-03-31
PL287101A1 (en) 1991-06-03
NO912066D0 (en) 1991-05-29

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