AT101911B - Connection contact for electric heating elements. - Google Patents
Connection contact for electric heating elements.Info
- Publication number
- AT101911B AT101911B AT101911DA AT101911B AT 101911 B AT101911 B AT 101911B AT 101911D A AT101911D A AT 101911DA AT 101911 B AT101911 B AT 101911B
- Authority
- AT
- Austria
- Prior art keywords
- connection contact
- electric heating
- heating elements
- metal
- connection
- Prior art date
Links
- 238000005485 electric heating Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000011049 pearl Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
<Desc/Clms Page number 1>
Anschlusskontakt für elektrische Heizstäbe.
Es ist bekannt, Anschlusskontakte für elektrische Heizstäbe aus Siliziumkarbid derart herzustellen, dass an den Anschlussenden der Heizwiderstände Umwicklungen mit Draht vorgenommen und dann die Enden mit einem Überzug aus Kupfer, Nickel, Silber oder Aluminium versehen werden, sei es durch das Metallspritzverfahren oder auf galvanischem Wege. Alle diese bis heute verwendeten Metallüberzüge haben den Nachteil, dass die bis jetzt gebräuchlichen Metalle einen relativ niedrigen Schmelzpunkt aufwiesen oder bei der Art der Verwendung, d. h. bei den hohen Temperaturen, die mit solchen Heizstäben erzeugt werden, an der Luft bei den bestehenden Temperaturen oxydierten. Sie wurden also an ihrer Oberfläche nichtleitend, wodurch hohe Übergangswiderstände erzeugt und unangenehme Erwärmungen hervorgerufen wurden.
Die Erfindung besteht nun in der Herstellung der an sich bekannten Metallüberzüge an den Anschlussenden der Heizstäbe aus einem schwer schmelzbaren und gegen Oxydierung äusserst widerstands- fähigem Metall u. zw. soll dazu Chrom verwendet werden. Der Überzug von Chrom an den Enden der Heizstäbe kann entweder galvanisch oder mechanisch erfolgen. Die Vorteile, die sich durch eine Verehromung der Anschlussenden ergeben, sind die kombinierte Eigenschaft der Sehwerschmelzbarkeit (Schmelzpunkt bedeutend höher als bei Nickel) mit einer praktischen Oxydierbarkeit, die bis heute in einem Metall fehlten. Das Nichtoxydieren, verbunden mit dem hohen Schmelzpunkt dieser Ansehluss- enden, hat dann stets gleichbleibenden Übergangswiderstand zur Folge.
Ebenso fällt das sogenannte Schmoren und die Sehmelzperlenbildung bei einer vorübergehend auftretenden Überlastung der Anschlussenden weg. Frhöht wird die Wirksamkeit der Erfindung wenn auch die für die Heizstäbe verwendeten Metal1fassungen, wie Klemmen, Schrauben usw. der Verchromung unterworfen werden.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Connection contact for electric heating elements.
It is known to manufacture connection contacts for electrical heating rods from silicon carbide in such a way that the connection ends of the heating resistors are wrapped with wire and then the ends are provided with a coating of copper, nickel, silver or aluminum, either by the metal spraying process or by galvanic means . All of these metal coatings used up to now have the disadvantage that the metals used up to now have a relatively low melting point or, in the type of use, i. H. at the high temperatures that are generated with such heating rods, oxidized in the air at the existing temperatures. So they became non-conductive on their surface, creating high contact resistances and uncomfortable warming.
The invention now consists in the production of the metal coatings known per se on the connection ends of the heating rods from a metal which is difficult to melt and which is extremely resistant to oxidation and the like. between chrome should be used for this. The chrome plating on the ends of the heating rods can be done either galvanically or mechanically. The advantages that result from admiring the connection ends are the combined property of visual fusibility (melting point significantly higher than with nickel) with a practical oxidizability, which has been lacking in a metal until today. The non-oxidation, combined with the high melting point of these connection ends, then always results in constant contact resistance.
Likewise, the so-called stewing and the formation of pearls of pearls in the event of a temporary overload of the connection ends are eliminated. The effectiveness of the invention is increased early if the metal mountings used for the heating rods, such as clamps, screws, etc., are subjected to chrome plating.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT101911T | 1924-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT101911B true AT101911B (en) | 1925-12-10 |
Family
ID=3620535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT101911D AT101911B (en) | 1924-12-05 | 1924-12-05 | Connection contact for electric heating elements. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT101911B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137516B (en) * | 1957-09-09 | 1962-10-04 | Kanthal Ab | Process for the production of a connection device for electrical heating elements |
-
1924
- 1924-12-05 AT AT101911D patent/AT101911B/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137516B (en) * | 1957-09-09 | 1962-10-04 | Kanthal Ab | Process for the production of a connection device for electrical heating elements |
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