FI71406B - Svetsmuff - Google Patents

Svetsmuff Download PDF

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Publication number
FI71406B
FI71406B FI831306A FI831306A FI71406B FI 71406 B FI71406 B FI 71406B FI 831306 A FI831306 A FI 831306A FI 831306 A FI831306 A FI 831306A FI 71406 B FI71406 B FI 71406B
Authority
FI
Finland
Prior art keywords
welding
melting point
sleeve
welding sleeve
desired melting
Prior art date
Application number
FI831306A
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English (en)
Other versions
FI831306A0 (fi
FI831306L (fi
FI71406C (fi
Inventor
Hans Keller
Original Assignee
Geberit 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4245240&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI71406(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Geberit Ag filed Critical Geberit Ag
Publication of FI831306A0 publication Critical patent/FI831306A0/fi
Publication of FI831306L publication Critical patent/FI831306L/fi
Publication of FI71406B publication Critical patent/FI71406B/fi
Application granted granted Critical
Publication of FI71406C publication Critical patent/FI71406C/fi

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Classifications

    • 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"
    • B29C65/3404—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"
    • B29C65/3468—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
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/70—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
    • B29C66/90—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
    • B29C66/9161—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
    • B29C66/912—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
    • B29C66/91211—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 with special temperature measurement means or methods
    • B29C66/91218—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 with special temperature measurement means or methods using colour change, e.g. using separate colour indicators
    • 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
    • B29C66/94—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

Description

71406
Hitsausmuhvi. - Svetsmuff.
Hitsausmuhvit kestomuovia olevien putkien yhdistämiseksi sisään sijoitetun sähkövirran johtimen kanssa, joka ainakin osittain on muodostettu vastuskuumennuslangaksi, ovat tunnettuja. Tällaiset muhvit ovat tavallisesti samaa ainesta kuin putki, jonka päälle se hitsataan, olkoonpa ne muodostettu tavallisiksi holkeiksi pysyvän liitoksen valmistamiseksi kahden putken välille tai olkoonpa ne toiselta sivulta varustettu kierteellä ja siten muodostettu putken osiksi, putken sen pään, johon se hitsataan, varustamiseksi kierteellä. Hitsauksen suorittamiseksi käytetään hyväksi erityisesti valmistettuja ohjauslaitteita, joilla vastuskuumennuslankaan aikaansaatua jännitystä ja kuumennuksen tarvittavaa kestoaikaa voidaan säätää. Tällaisia laitteita ei täydy olla ainoastaan jokaisella rakennuspaikalla, jolla hitsausmuhveja käytetään, vaan suurrakennuspaikoi1 la, joilla useat työntekijät ovat tekemisissä kestomuovia olevien putkien asennuksen kanssa, tarvitaan useita laitteita ja myöskin silloin, kun laitteita ei käytetä koko päivää. Usein kysymyksessä ovat siis suurehkot pääoman sijoitukset, joihin liittyy se tunnettu epäkohta, ette rakennuspaikoilla laitteet vahingoittuvat, joutuvat hukkaan tai niitä jopa varastetaan. Koska laitteessa voidaan säätää hitsausprosessia varten tarpeellisen virran läpikulun kestoaikaa ja usein myöskin tarvittavaa jännitettä, on olemassa mahdollisuus säätää näitä arvoja väärin, mikä johtaa hitsiliitoksen virheisiin. Nyt kaikki nämä epäkohdat voidaan välttää keksinnön mukaisella hitsausmuhvi1la, joka on tunnettu siitä, että sähkövirran johtimessa on haluttu sulatuskohta, joka on mitoitettu siten, että se sulaa poikki silloin, kun kuumennusjohtoon on siirretty muhvin hitsaamiseksi tarpeellinen energia. Tällöin on ainoastaan huomioitava, että valmistaja ilmoittaa käytettävän jännitteen, jolloin eurooppalaisissa oloissa tavallissti käytetään jännitettä 220 l/-'··, koska tämä jännite on saatavissa kaikilla rakennuspaikoilla. Kun ainoana apulaitteena on kaksijohtiminen kaapeli yhdessä pistokkeen 220 V-^-l i itäntää varten, nauha- 2 71406 kytkimen ja sähkövirran jobtimeen yhdistettävän pistokkeen sekä pistorasian kanssa, minkäänlainen käyttövirhe ei ole mahdollinen ja pääoman sijoituskustannukset sekä välineiden hukkaan joutumisen vaara ovat olennaisesti pienemmät kuin käytettäessä tähän saakka välttämättömiä ohjauslaitteita.
Seuraavasa selitetään keksinnön erästä sovellutusesimerkkiä viitaten piirustukseen, jossa:
Kuvio 1 esittää pituusleikkausta keksinnön mukaisesta hitsaus-muhvista.
Kuvio 2 esittää kuviosta 1 viivaa II-II pitkin otettua poikkileikkausta.
Viitenumerolla 1 on merkitty lieriömäistä muhviosaa, jonka sisäpintaan on sovitettu sinänsä tunnetulla tavalla vastus-kuumennuslangan 3 kierrokset. Tämän langan molemmat päät on merkitty viitenumeroilla 3b ja 3c.
Kierrosten 3a toisen pään ja liitännän 3c välille on sijoitettu haluttu sulatuskohta 3d, joka on mitoitettu siten, että se sulaa poikki, kun sähkökuumennusjohtoon 3a on siirretty muhvin hitsaamiseksi tarvittava energia, mikä muhvin koon mukaan jännitteellä 220 lAv voi kestää 0,5 - 5 minuuttia tai joissakin tapauksissa vielä kauemmin. Tässä tämä haluttu sulatuskohta on sijoitettu lasiampullin 4 sisään. Luonnollisesti se voisi olla suljettu myöskin sopivammin läpinäkyvään muoviholkkiin. Tarkoituksenmukaisesti sulatuskohta ainakin osittain on ympäröity aineksella, joka palautumattomasii muuttaa väriään. Tämä voidaan aikaansaada myöskin siten, että haluttu sulatuskohta on ainesta, joka sulaessaan muodostaa suojaholkin sisäpinnalle hyvin näkyvän kerroksen. Tällä tavalla on ilman muuta mahdollista todeta, onko hitsausprosessi jo suoritettu vai ei.
Esitetyssä sovellutusesimerkissä ampullin 4 suojaama haluttu 71406 sulatuskohta 4 on sijoitettu kiinnittimeen 5, joka sisältää myöskin johdon molemmat vapaat päät 3b sekä 3c ja joka on yhdistetty hitsausmuhvin muun osan kanssa kahdella muovi-niitillä 6 ja 7 niin, että koko kiinnitin hitsausprosessin jälkeen voidaan erottaa muhvista.

Claims (6)

1. Hitsausmuhvi kestomuovia olevien putkien yhdistämiseksi sisään sijoitetun sähkövirran johtimen (3) kanssa, joka ainakin osittain on muodostettu vastuskuumennuslangaksi ja jossa on kaksi vapaata sähkövirran liitospäätä (3b, 3c), tunnettu siitä, että sähkövirran johtimessa on haluttu sulatuskohta (3d), joka on mitoitettu siten, että se sulaa poikki silloin, kun kuumennusjohtoon on siirretty muhvin hitsaamiseksi tarpeellinen energia.
2. Patenttivaatimuksen 1 mukainen hitsausmuhvi, tunnettu siitä, että haluttu sulatuskohta on sovitettu siten, että se on nähtävissä ulkopuolelta.
3. Patenttivaatimuksen 2 mukainen hitsausmuhvi, tunnettu siitä, että haluttu sulatuskohta on sijoitettu läpinäkyvän aineksen (4) sisään.
4. Patenttivaatimuksen 2 tai 3 mukainen hitsausmuhvi, tunnettu siitä, että haluttu sulatuskohta on ympäröity ainakin osittain aineksella, joka poikki sulaessaan muuttaa pa 1autuma11omasti väriään.
3. Jonkin patenttivaatimuksen 1-4 mukainen hitsausmuhvi, t u n n e t. t u siitä, että haluttu sulatuskohta on sijoitettu hitsausmuhvin muusta osasta irrotettavaan muovikiirmittimeen (5).
6. Jonkin patenttivaatimuksen 1 - 5 mukainen hitsausmuhvi, t u n n e t t u siitä, että haluttu hitsauskohta on sovitettu sähkövirran johtimen virranliittimenä käytettävän pään (3c) ja vastuskuumennuslankana toimivan osan (3a) välille.
FI831306A 1982-05-12 1983-04-19 Svetsmuff FI71406C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH294882 1982-05-12
CH294882 1982-05-12

Publications (4)

Publication Number Publication Date
FI831306A0 FI831306A0 (fi) 1983-04-19
FI831306L FI831306L (fi) 1983-11-13
FI71406B true FI71406B (fi) 1986-09-09
FI71406C FI71406C (fi) 1986-12-19

Family

ID=4245240

Family Applications (1)

Application Number Title Priority Date Filing Date
FI831306A FI71406C (fi) 1982-05-12 1983-04-19 Svetsmuff

Country Status (7)

Country Link
US (1) US4493985A (fi)
EP (1) EP0093821B1 (fi)
AT (1) ATE27053T1 (fi)
DE (1) DE3276258D1 (fi)
DK (1) DK164241C (fi)
FI (1) FI71406C (fi)
NO (1) NO831674L (fi)

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Publication number Publication date
FI831306A0 (fi) 1983-04-19
DK164241C (da) 1992-10-26
DK163983A (da) 1983-11-13
FI831306L (fi) 1983-11-13
EP0093821A1 (de) 1983-11-16
DK163983D0 (da) 1983-04-14
DE3276258D1 (en) 1987-06-11
EP0093821B1 (de) 1987-05-06
DK164241B (da) 1992-05-25
US4493985A (en) 1985-01-15
FI71406C (fi) 1986-12-19
NO831674L (no) 1983-11-14
ATE27053T1 (de) 1987-05-15

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