DE966669C - Heizkeil zum Schweissen von thermoplastischen Kunststoffen - Google Patents
Heizkeil zum Schweissen von thermoplastischen KunststoffenInfo
- Publication number
- DE966669C DE966669C DEZ4394A DEZ0004394A DE966669C DE 966669 C DE966669 C DE 966669C DE Z4394 A DEZ4394 A DE Z4394A DE Z0004394 A DEZ0004394 A DE Z0004394A DE 966669 C DE966669 C DE 966669C
- Authority
- DE
- Germany
- Prior art keywords
- welding
- hot wedge
- wedge
- thermoplastics
- hot
- 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
Links
- 238000003466 welding Methods 0.000 title claims description 13
- 229920001169 thermoplastic Polymers 0.000 title claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 title claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 229910052790 beryllium Inorganic materials 0.000 claims description 4
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 7
- 239000004033 plastic Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical class Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910017767 Cu—Al Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000994 Tombac Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
- B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/8126—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
- B29C66/81261—Thermal properties, e.g. thermal conductivity, thermal expansion coefficient
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
- B29C66/8183—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal conducting constructional aspects
- B29C66/81831—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal conducting constructional aspects of the welding jaws
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
- Heizkeil zum Schweißen von thermoplastischen Kunststoffen Die Erfindung bezieht sich auf einen Heizkeil zum Schweißen von thermoplastischen Kunststoffen.
- Mit der Entwicklung der thermoplastischen Kunststoffe kamen verschiedene Verfahren auf, um zwei derartige Stoffe an den miteinander zu verbindenden Fläche. unter Wärmeeinwirkung im weichplastischen Zustand zu verschweißen.
- Zu diesem Zweck führt man einen Heizkeil, der eine der jeweiligen Schweißarbeit angepaßte messer- oder keilartige Form besitzt, zwischen die beiden zu verschweißenden Stoffe ein, so daß diese unter dem Einfluß der Wärme plastisch werden.
- In diesem Zustand, der nur kurze Zeit anhält, werden die Stoffe mechanisch zusammengepreßt. Damit ist dann die Schweißung vollzogen.
- Da die thermoplastischen Stoffe vielfach organische Chlorwasserstoffverbindungen darstellen, entstehen beim Schweißen Zersetzungsprodukte, die stark chlorwasserstoffhaltig sind und die Heizkeile sehr schnell angreifen, ganz gleich, ob es sich um Handwerkzeuge oder Teile von Schweißmaschinen handelt. Es wird daher als sehr lästig empfunden, daß diese Heizkeile nach kurzer 5 chweiß dauer wieder zugerichtet oder nachgeformt werden müssen. Diese häufig notwendig werdende Arbeit stört den gleichmäßigen Ablauf des Schweißens und verteuert diese erheblich. Es hat nicht an Versuchen gefehlt, diesem Übelstand abzuhelfen.
- Man hat Versuche mit Legierungen, z. B. Messing, Tombak, Cu-Al, Bronze usw., durchgeführt. die besonderes beständig gegen die Zersetzungs- produkte der Kunststoffe sind. Diese Legierungen haben aber alle den Nachteil, daß ihre Wärmeleitfähigkeit klein ist und dadurch nur eine geringe Schweiß leistung erreicht werden kann.
- Mit Heizkeilen aus Kupfer, aber auch aus Silber, fst die Schweileistung am besten, und man hat viele Versuche gemacht, um durch geeignete galvanische Oberflächenveredelung, wie Vernicklung, Verchromung, Cadmieren usw., eine Verbesserung der Haltbarkeit zu erzielen. Alle diese Versuche brachten nur kleine Teilerfolge, die aber zeitlich nur geringe Wirkung hatten.
- Die demgegenüber fortschrittliche Lösung dieser Aufgabe besteht gemäß der Erfindung darin, daß der Heizkeil aus einer Legierung eines gut wärmeleitenden Metalls mit einem Erdalkalimetall aus der II. Gruppe des Periodischen Systems, z. B.
- Beryllium, besteht. Eine solche Legierung bildet nach einer entsprechenden Wärmebehandlung an der Oberfläche des Heizkeiles eine dünne festhaftende Oxydhaut mit einer besonderen Widerstandsfestigkeit gegen die Einwirkung der Zersetzungsprodukte des Kunststoffes beim Schweißen.
- Als Ausführungsbeispiel wird ein Heizkeil aus Kupfer mit einem geringen Berylliumzusatz genannt. DieseLegierung scheidet nach einer Wärmebehandlung an der Oberfläche eine dünne Haut von Kupfer-Beryllium-Oxyd aus, das außerordentlich festhaftet und durch seinen höheren Berylliumoxydanteil chemisch - selbst bei höherer Temperatur - von Chlorwasserstöffverbindungen so gut wie nicht angegriffen wird. Diese sehr dünne Oxydhaut, die sich bei gelegentlichen Verletzungen schnell neu bildet, bietet für den Wärmeübergang fast kein Hindernis, so daß die gute Wärmeleitfähigkeit des Kupfer-Berylliums praktisch völlig ungehemmt zur Auswirkung kommt.
- Praktische Versuche haben gezeigt, daß Heizkeile nach der Erfindung eine Haltbarkeit bei der Kunststoffschwefßung aufweisen, die um 30- bis 50mal größer ist als diejenige von Heizkeilen aus Kupfer, selbst wenn diese besonders gut oberflächenveredelt sind.
- Ähnliche Wirkungen sind z. B. mit Legierungen von Kupfer mit Magnesium zu erzielen.
Claims (1)
- ! PATENTANSPRUCH: Heizkeil zum Schweißen von thermoplastischen Kunststoffen, dadurch gekennzeichnet, daß er aus einer Legierung eines gut wärmeleitenden Metalls mit einem Erdalkalimetall aus der II. Gruppe des Periodischen Systems, z. B. Beryllium, besteht.In Betracht gezogene Druckschriften: Zeitschrift »Wertkstoffe und Korrosion«, Jahrgang I950, Heft 12, S. 493.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEZ4394A DE966669C (de) | 1954-09-01 | 1954-09-01 | Heizkeil zum Schweissen von thermoplastischen Kunststoffen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEZ4394A DE966669C (de) | 1954-09-01 | 1954-09-01 | Heizkeil zum Schweissen von thermoplastischen Kunststoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE966669C true DE966669C (de) | 1957-08-29 |
Family
ID=7619119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEZ4394A Expired DE966669C (de) | 1954-09-01 | 1954-09-01 | Heizkeil zum Schweissen von thermoplastischen Kunststoffen |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE966669C (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1192813B (de) * | 1961-06-08 | 1965-05-13 | Funck Kg Dr Ing | Verfahren zum Verschweissen von thermoplastischen Kunststoffen |
| DE102006016695A1 (de) * | 2006-04-08 | 2007-10-11 | Leister Process Technologies | Elektrisches Heizelement |
-
1954
- 1954-09-01 DE DEZ4394A patent/DE966669C/de not_active Expired
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1192813B (de) * | 1961-06-08 | 1965-05-13 | Funck Kg Dr Ing | Verfahren zum Verschweissen von thermoplastischen Kunststoffen |
| DE102006016695A1 (de) * | 2006-04-08 | 2007-10-11 | Leister Process Technologies | Elektrisches Heizelement |
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