DE974450C - Bi-metal strips or a similar body made up of two layers of different thermal expansion - Google Patents

Bi-metal strips or a similar body made up of two layers of different thermal expansion

Info

Publication number
DE974450C
DE974450C DES21364A DES0021364A DE974450C DE 974450 C DE974450 C DE 974450C DE S21364 A DES21364 A DE S21364A DE S0021364 A DES0021364 A DE S0021364A DE 974450 C DE974450 C DE 974450C
Authority
DE
Germany
Prior art keywords
layers
thermal expansion
different thermal
metal strips
body made
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
DES21364A
Other languages
German (de)
Inventor
Wilhelm Dipl-Ing Gebhardt
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Priority to DES21364A priority Critical patent/DE974450C/en
Application granted granted Critical
Publication of DE974450C publication Critical patent/DE974450C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K5/00—Measuring temperature based on the expansion or contraction of a material
    • G01K5/48—Measuring temperature based on the expansion or contraction of a material the material being a solid
    • G01K5/56—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid
    • G01K5/62—Measuring temperature based on the expansion or contraction of a material the material being a solid constrained so that expansion or contraction causes a deformation of the solid the solid body being formed of compounded strips or plates, e.g. bimetallic strip
    • G01K5/64—Details of the compounds system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H2037/525—Details of manufacturing of the bimetals, e.g. connection to non bimetallic elements or insulating coatings

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)

Description

Bi-Metallstreifen oder ähnlicher aus zwei Schichten verschiedener Wärmedehnung aufgebauter Körper Die Erfindung bezieht sich auf Bi-Metallstreifen oder ähnliche Körper, die Schichten verschiedener Wärmedehnung haben und sich deshalb bei Erwärmung unter dem Einfluß der Schicht mit dem größeren Wärmedehnungskoeffizienten krümmen.Bi-metal strips or similar made of two layers of different Thermal expansion of built-up body The invention relates to bi-metal strips or similar bodies that have layers of different thermal expansion and are therefore when heated under the influence of the layer with the greater coefficient of thermal expansion bend.

Zur Herstellung von Bi-Metallstreifen sind bereits verschiedene Verfahren vorgeschlagen und angewendet worden. Außer einem Lötverfahren wurden Niet- und Walzschweißverfahren vorgeschlagen und angewendet. Bei einem weitverbreiteten Verfahren wird ein zusammengesetzter zweiteiliger Block auf die gewünschte Stärke heruntergewalzt. Es ist einleuchtend, daß bei derartig starken Verformungsarbeiten die Dicken der einzelnen Schichten nicht immer mit der gewünschten Genauigkeit eingehalten werden können, woraus sich ergibt, daß die so gefertigten Bi-Metallstreifen in bezug auf die Genauigkeit unter Umständen größeren Toleranzen unterworfen sind. There are already various processes for producing bi-metal strips proposed and applied. In addition to a soldering process, rivet and roll welding processes were used proposed and applied. One widely used method is becoming a compound two-part block rolled down to the desired thickness. It is obvious that with such strong deformation work the thicknesses of the individual layers cannot always be maintained with the desired accuracy, from which shows that the bi-metal strips so manufactured in terms of accuracy below Are subject to larger tolerances under certain circumstances.

Die beschriebenen Schwierigkeiten werden erfindungsgemäß dadurch beseitigt, daß zum Verbinden der Schichten eines Bi-Metallstreifens oder ähnlicher Körper aus zwei Schichten verschiedener Wärmedehnung an sich bekannte Klebemittel angewendet werden. The described difficulties are thereby solved according to the invention eliminates the need for connecting the layers of a bi-metal strip or the like Body made of two layers of different thermal expansion, known adhesive be applied.

Zwar sind bereits früher verschiedene Vorschläge gemacht worden, Metalle, z. B. auch Schaltmagnetteile, durch Kleben miteinander zu verbinden, jedoch läßt sich diesen Vorschlägen nichts entnehmen, was geeignet wäre, den gedanklich großen Schritt vom bekannten Stand der Technik zur Erfindung zu überbrücken. Various suggestions have already been made earlier, Metals, e.g. B. also switching magnet parts to be connected to each other by gluing, however nothing can be inferred from these proposals that would be suitable in terms of ideas big step from known prior art to the invention bridge.

Als Kleber können die für Metalle bekannten Klebemittel verwendet werden. Besteht der Körper aus Kunststoffstreifen verschiedener Wärmedehnung bzw. wird eine Kunststoffschicht auf eine Metall schicht aufgeklebt, so wird vorteilhaft hierfür ein geeigneter Kunststoffkleber eingesetzt. Diese so aus zwei Schichten zusammengeklebten Körper sind von bereits vorgeschlagenen Körpern zu unterscheiden, bei denen auf einen dünnen Metallstreifen eine Schicht aus Kunststoff, z. B. durch Spritzen, aufgetragen ist. The adhesives known for metals can be used as the adhesive will. If the body consists of plastic strips of different thermal expansion or If a plastic layer is glued onto a metal layer, it is advantageous a suitable plastic adhesive is used for this. This so from two layers bodies that are glued together are to be distinguished from bodies that have already been proposed, in which on a thin metal strip a layer of plastic, z. B. by Spray, is applied.

Ein derartiger Körper ist kein echter Zweischichtenkörper, er hat auch nicht den von einem Zweischichtenkörper geforderten ausgeprägten Temperaturgang.Such a body is not a real two-layer body, it has not even the pronounced temperature response required of a two-layer body.

Die Erfindung bietet unter anderem den Vorteil, daß diese Körper leicht und billig herstellbar sind. The invention offers, inter alia, the advantage that this body are easy and cheap to manufacture.

Verwendet man Metall geringerer Wärmedehnung und Kunststoffe; namentlich solche mit besonders hoher Wärmedehnung, dann krümmen sich die Körper schon bei kleinen Temperaturschwankungen ziemlich stark. Man kommt deshalb mit geringen Heiztemperaturen aus. Dies ist besonders erwünscht, wenndie Körper in Meßgeräte, temperaturempfindliche Gegenstände od. dgl. eingebaut werden. Bei aus Metall und Kunststoff bestehenden Körpern rufen zwar auch die Schwankungen der Raumtemperatur schon starke Krümmungsänderungen hervor. Diese können aber in bekannter Weise durch einen zweiten derartigen Körper, der nur den Schwankungen der Raumtemperatur ausgesetzt ist, ausgeglichen werden.If you use metal with lower thermal expansion and plastics; by name those with particularly high thermal expansion, then the body bends over small temperature fluctuations quite strong. You therefore come with low heating temperatures the end. This is particularly desirable when the bodies in meters are temperature sensitive Objects or the like. Be installed. When made of metal and plastic The fluctuations in room temperature cause bodies to change their curvature strongly emerged. These can, however, in a known manner by a second such body, which is only exposed to fluctuations in room temperature.

Claims (1)

PATENTANSPRUCH: Die Anwendung von an sich bekannten Klebemitteln zum Verbinden der Schichten eines Bi-Metallstreifens oder ähnlicher Körper aus zwei Schichten verschiedener Wärmedehnung. PATENT CLAIM: The use of adhesives known per se for connecting the layers of a bi-metal strip or similar body of two Layers of different thermal expansion. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 690 687, 732 341, 327 873, 707 445, 75I I64. Publications considered: German Patent Specifications No. 690 687, 732 341, 327 873, 707 445, 75I I64. In Betracht gezogene ältere Patente: Deutsches Patent Nr. 8I5 539. Older patents considered: German Patent No. 8I5 539.
DES21364A 1950-12-24 1950-12-24 Bi-metal strips or a similar body made up of two layers of different thermal expansion Expired DE974450C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES21364A DE974450C (en) 1950-12-24 1950-12-24 Bi-metal strips or a similar body made up of two layers of different thermal expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES21364A DE974450C (en) 1950-12-24 1950-12-24 Bi-metal strips or a similar body made up of two layers of different thermal expansion

Publications (1)

Publication Number Publication Date
DE974450C true DE974450C (en) 1960-12-29

Family

ID=7476420

Family Applications (1)

Application Number Title Priority Date Filing Date
DES21364A Expired DE974450C (en) 1950-12-24 1950-12-24 Bi-metal strips or a similar body made up of two layers of different thermal expansion

Country Status (1)

Country Link
DE (1) DE974450C (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE327873C (en) * 1919-03-09 1920-10-20 Siemens & Halske Akt Ges Electrothermal measuring device
DE690687C (en) * 1937-05-28 1940-05-04 Siemens Schuckertwerke Akt Ges Temperature toggle switch
DE707445C (en) * 1937-03-10 1941-06-21 Heraeus Vacuumschmelze Akt Ges Thermal bimetal
DE732341C (en) * 1938-05-13 1943-02-27 Telefunken Gmbh Process for the production of magnet systems made up of permanent magnetic and soft iron parts
DE815539C (en) * 1948-10-02 1951-10-01 Fried Krupp Widiafabrik Thermobimetal equivalent composite material
DE751164C (en) * 1938-04-21 1952-11-24 Trierer Walzwerk Ag Process for the production of bimetal strips

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE327873C (en) * 1919-03-09 1920-10-20 Siemens & Halske Akt Ges Electrothermal measuring device
DE707445C (en) * 1937-03-10 1941-06-21 Heraeus Vacuumschmelze Akt Ges Thermal bimetal
DE690687C (en) * 1937-05-28 1940-05-04 Siemens Schuckertwerke Akt Ges Temperature toggle switch
DE751164C (en) * 1938-04-21 1952-11-24 Trierer Walzwerk Ag Process for the production of bimetal strips
DE732341C (en) * 1938-05-13 1943-02-27 Telefunken Gmbh Process for the production of magnet systems made up of permanent magnetic and soft iron parts
DE815539C (en) * 1948-10-02 1951-10-01 Fried Krupp Widiafabrik Thermobimetal equivalent composite material

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