DE1645769U - DEVICE FOR ELECTRIC HEATING OF MACHINE PARTS. - Google Patents
DEVICE FOR ELECTRIC HEATING OF MACHINE PARTS.Info
- Publication number
- DE1645769U DE1645769U DEV1332U DEV0001332U DE1645769U DE 1645769 U DE1645769 U DE 1645769U DE V1332 U DEV1332 U DE V1332U DE V0001332 U DEV0001332 U DE V0001332U DE 1645769 U DE1645769 U DE 1645769U
- Authority
- DE
- Germany
- Prior art keywords
- heating
- heated
- recesses
- heating elements
- magnesium oxide
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/34—Heating or cooling presses or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
- B01J3/06—Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
- B01J3/065—Presses for the formation of diamonds or boronitrides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/004—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses involving the use of very high pressures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/062—Press plates
- B30B15/064—Press plates with heating or cooling means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Resistance Heating (AREA)
Description
Gebrauchsmuster-Hilfsanmeldung. Vorrichtung zum elektrischen Beheizen von Maschinenteilen.Utility model auxiliary registration. Device for electrical heating of machine parts.
Die elektrische Beheizung grösserer Maschinenteile bietet insbesondere dann Schwierigkeiten, wenn die Heizelemente in Ausnehmungen der zu beheizenden Teile untergebracht sind, weil man dan zwecks Vermeidung unliebsamer Wärmeverluste darauf bedacht sein muss, dass der Wärmeübergang zwischen dem Heizelement und dem zu beheizenden Teil ein mögliche ! guter ist. Man muss also vermeiden, dass zwischen dem Wärmespender und dem zu beheizenden Teil Lufteinschlüsse oder ähnliche,einem guten Wärmeübergang abträgliche Faktoren in Erscheinung treten.The electrical heating of larger machine parts offers in particular then difficulties when the heating elements in recesses of the parts to be heated are housed, because you can then in order to avoid unpleasant heat loss on it It must be taken into account that the heat transfer between the heating element and the one to be heated Part of a possible! is good. So you have to avoid being between the heat dispenser and the part to be heated air inclusions or similar, a good heat transfer detrimental factors come into play.
Zur Lösung dieser Aufgabe sind bereits mehrere Einrichtungen bekannt geworden, u. a. eine, bei der in Bohrungen des zu beheizenden Maschinenteils Rohrheizkörper eingeschoben sind.Several devices are already known to solve this problem become, i.a. one with tubular heating elements in the bores of the machine part to be heated are inserted.
Abgesehen davon, dass die Herstellung tiefer Bohrungen an sich schon nicht gerade leicht ist, muss man im vorliegenden Falle den Aussendurchmesser der einzuschiebenden Rohrheizkbrper überschleifen, damit diese zügig in die Bohrungen der Maschinenteile eingeführt werden können. Eine solche Reizeinrichtung ist teuer und bietet trotz bester Fertigung nicht die Gewähr dafür, dass nicht noch immer Lufteinschlüsse und damit Stellen schlechten Wärmeübergangs zwischen dem Wärme spender und lem zu beheizenden Teil vorhanden sind.Apart from the fact that the production of deep holes is in itself is not exactly easy, you have to measure the outside diameter of the Grind the tubular heating element to be inserted so that they can quickly be inserted into the holes of the machine parts can be introduced. Such a stimulus device is expensive and despite the best production, it does not guarantee that it will not still be Air inclusions and thus places with poor heat transfer between the heat donors and lem part to be heated are available.
Des weiteren ist eine Einrichtung bekannt, bei der Rohrheizkörner in den zu beheizenden Maschinenteil eingegossen sind , Dieses Verfahren ist nur dann durchführbar, wenn es sich um die Beheizung kleinerer Teile handelt. Bei der Herstellung grösserer Teile besteht infolge der zur Anwendung kammenden grösseren Gussmenge die Gefahr, dass durch diese beim Giessen der Mantel des in die Form eingelegten Rohrheizkörpers vom Guss aufgelöst und dieser unbrauchbar wird.Furthermore, a device is known in which tubular heating elements are cast in the machine part to be heated, this procedure is only then feasible when it comes to heating smaller parts. In the The manufacture of larger parts is based on the larger parts that are used Pouring quantity the risk of the casing of the inserted into the mold during pouring Tubular heating element dissolved from the cast and this becomes unusable.
Um auch noch in größere Gussteile Rohrheizkörper eingiessen zu können, ist es bekannt, zunächst beim Giessen des zu beheizenden Teiles in die Gussform Stahlrohren einzulegen.In order to be able to cast tubular heating elements in larger cast parts, it is known to begin with when the part to be heated is poured into the mold Insert steel pipes.
In den so vorbereiteten Ausnehmungen wird nachfolgend mittig der Rohrheizkörper angeordnet und in die Stahlröhre eingegossen. Die hierfür erforderliche geringe Gussmenge kühlt beim Giessen schnell genug ab und greift daher den Mantel des Rohrheizkrpers nicht an. Trotz allem darf auch bei Anwendung dieses Verfahrens nicht übersehen werden, dass auch ihm, wie allen Gussvrfahren, ein Nachteil anhaftet. Die Lunkerbildung kann nämlich nicht mit Sicherheit vermieden werden und dadurch entstehen unkontrollierbare Lufteinschlüssel die ihrerseits einen schlechten Wärmeübergang zur Folge haben.The tubular heating element is then placed in the middle of the recesses prepared in this way arranged and poured into the steel tube. The small required for this The cast quantity cools down quickly enough when it is poured and therefore grips the jacket of the tubular heating element not on. In spite of everything, this procedure should not be overlooked either that it, like all casting methods, has a disadvantage. The formation of cavities namely cannot be avoided with certainty and this creates uncontrollable ones Air keys which in turn result in poor heat transfer.
Die vorbezeichneten Mängel bekannter Einrichtungen können erfindungsgemäss dadurch beseitigt werden, wenn die Ausnehmungen des zu beheizenden Teiles zugleich die Hüllkörper für an sich mantellose Heizelemente bilden.The above-mentioned shortcomings of known devices can according to the invention be eliminated when the recesses of the part to be heated at the same time form the enveloping body for heating elements without a jacket per se.
Bei Beachtung der durch die Erfindung gegebenen Lehre werden Vorteile
der verschiedensten Art erzielt. Beim Guss des zu beheizenden Teiles können durch
Einlegen von Kernen Ausnehmungen geschaffen werden, in die nachfolgend das Heizelement
mantellos eingebracht wird. Hierzu eignen sich vor allem
Die Herstellung geht etwa wie folgt vor sich. In die Ausnehmungen
des zu beheizenden Teiles werden on Segmenten aus Reinmgnesium Umhüllte Heizleiter
eingesehoben. Nachfolgend wird in einem
Innerhalb der Ausnebmungen 3 sind die Heizleiter 5 angeordnet, die
allseitig von der Magnesiumoxydumhüllung 4 eingeschlossen
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV1332U DE1645769U (en) | 1951-06-30 | 1951-06-30 | DEVICE FOR ELECTRIC HEATING OF MACHINE PARTS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV1332U DE1645769U (en) | 1951-06-30 | 1951-06-30 | DEVICE FOR ELECTRIC HEATING OF MACHINE PARTS. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1645769U true DE1645769U (en) | 1952-10-23 |
Family
ID=30467251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV1332U Expired DE1645769U (en) | 1951-06-30 | 1951-06-30 | DEVICE FOR ELECTRIC HEATING OF MACHINE PARTS. |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1645769U (en) |
-
1951
- 1951-06-30 DE DEV1332U patent/DE1645769U/en not_active Expired
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