DE4306897A1 - Method for corrosion protection for electric motors which run in water - Google Patents

Method for corrosion protection for electric motors which run in water

Info

Publication number
DE4306897A1
DE4306897A1 DE19934306897 DE4306897A DE4306897A1 DE 4306897 A1 DE4306897 A1 DE 4306897A1 DE 19934306897 DE19934306897 DE 19934306897 DE 4306897 A DE4306897 A DE 4306897A DE 4306897 A1 DE4306897 A1 DE 4306897A1
Authority
DE
Germany
Prior art keywords
stator
water
rotor
corrosion protection
electric motors
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.)
Withdrawn
Application number
DE19934306897
Other languages
German (de)
Inventor
Rupert Hummel
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.)
Heidolph Elektro GmbH and Co KG
Original Assignee
Heidolph Elektro GmbH and Co KG
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 Heidolph Elektro GmbH and Co KG filed Critical Heidolph Elektro GmbH and Co KG
Priority to DE19934306897 priority Critical patent/DE4306897A1/en
Publication of DE4306897A1 publication Critical patent/DE4306897A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit

Abstract

In the case of a method for corrosion protection for electric motors which run in water as a drive element for pumps, especially shaded polar motors, having a rotor which can rotate in water-lubricated bearings of the stator, it is provided in order to increase the oxidization resistance and to form permanently reliable corrosion protection that a cataphoretic coating is applied to the stator or to the stator and the rotor by means of a first dipping process, as a priming layer, and a watery (thin, dilute) single-component or multi-component paint, which is resistant to chemical influences, is subsequently applied by means of a second dipping process, as a sealing layer.

Description

Die Erfindung betrifft ein Verfahren zum Korrosions­ schutz für in Wasser laufenden Elektromotoren als An­ triebsorgan für Pumpen, insbesondere Spaltpolmotoren, mit einem in wassergeschmierten Lagern des Stators dreh­ baren Rotor.The invention relates to a method for corrosion Protection for electric motors running in water as an drive element for pumps, in particular shaded-pole motors, with a turn in water-lubricated bearings of the stator hard rotor.

Bei Elektromotoren obiger Gattung ist es bekannt, daß trotz einer auf den Stator und den Rotor aufgebrachten Lackierung Rostansätze auftreten, deren Bildung unter anderem von etwaigen chemischen Wasserzusätzen, wie Chlor, beeinflußt ist. Außerdem ist es bekannt, daß sich desöfteren von den Rostansätzen Rostpartikel lösen, die unterstützt durch das magnetische Streufeld in die Ro­ torlager gelangen und dort zu Beschädigungen oder einem Unbrauchbarwerden des Elektromotors Anlaß geben.In electric motors of the above type, it is known that despite being applied to the stator and rotor Painting rust deposits occur, their formation under other of any chemical water additives, such as Chlorine, is affected. It is also known that often loosen rust particles from the rust deposits supported by the magnetic stray field in the Ro gate bearing and there damage or a If the electric motor becomes unusable, give cause.

Es ist Aufgabe der Erfindung Maßnahmen zur Erhöhung der Oxidationsfestigkeit und zu einem dauerhaft sicheren Korrosionsschutz bei in Wasser laufenden Elektromotoren zu schaffen.It is an object of the invention to increase measures Resistance to oxidation and to a permanently safe Corrosion protection for electric motors running in water to accomplish.

Der Erfindung gemäß ist diese Aufgabe dadurch gelöst, daß auf den Stator oder den Stator und den Rotor vermit­ tels eines ersten Tauchvorgangs eine Katophoreselackier­ ung als Grundschicht aufgetragen und nachfolgend durch einen zweiten Tauchvorgang ein dünnflüssiger gegen chemischen Einflüssen beständiger Ein- oder Mehrkomponenten­ lack als Versiegelungsschicht aufgebracht werden. Durch die Verfahrensschritte ist erreicht, daß die Versiege­ lungsschicht, z. B. die vorwiegend in Eckbereichen oder im Bereich des Anlaufkupfers nach Auftrag der Grund­ schicht verbleibenden Poren und Spalten verschließt und somit durch Erhöhung der Oxidationsfestigkeit Korros­ ionen der Stator- bzw. Stator- und Rotormaterialien aus­ schließt. Außerdem trägt die Versiegelungsschicht zur Verfestigung der Grundschicht bei, was zu einem dauer­ haft wirkenden Schutz von Stator bzw. Stator und Rotor gegen chemischen und mechanischen Einflüssen führt. Be­ vorzugt wird die Versiegelungsschicht durch einen Ein- oder Mehrkomponentenklarlack gebildet. Es ist denkbar, daß an Stelle der Katophorese-Tauchlackierung auch an­ derweitig geeignete Lacke als Grundschicht beliebig, z. B. durch tauchen, aufgetragen sein können.According to the invention, this object is achieved in that that on the stator or the stator and the rotor a catophoresis painter applied as a base layer and then through a second dip against a thin chemical influences of stable single or multiple components lacquer can be applied as a sealing layer. By the procedural steps have been achieved that the seals treatment layer, e.g. B. the predominantly in corner areas or  in the area of the starting copper after order the reason layer closes remaining pores and gaps and thus by increasing the corrosion resistance of Korros ions of the stator or stator and rotor materials closes. The sealing layer also helps Solidification of the base layer, resulting in a permanent adhesive protection of the stator or stator and rotor against chemical and mechanical influences. Be the sealing layer is preferred by a or multi-component clear varnish. It is conceivable that instead of the catophoretic dip coating also any other suitable lacquer as a base layer, e.g. B. by diving can be applied.

In Fortführung des Verfahrens zur Schaffung eines sich­ eren Korrosionsschutzes für in Wasser laufenden Elektro­ motoren ist vorgesehen, auf den Rotor oder auf den Rotor und den Stator eine Polyamidpulverbeschichtung nach dem Wirbelsinterverfahren aufzubringen. Es versteht sich, daß bei Aufbringen einer Polyamidpulverbeschichtung die Anordnung von als Grund- und Versiegelungsschichten dienenden Lackierungen wegen der Sintertemperaturen ent­ fällt.Continuing the process of creating one corrosion protection for electrical systems running in water motors is provided on the rotor or on the rotor and the stator a polyamide powder coating after the To apply vortex sintering. It goes without saying that when applying a polyamide powder coating Arrangement of as base and sealing layers serving coatings due to the sintering temperatures ent falls.

Claims (3)

1. Verfahren zum Korrosionsschutz für in Wasser laufen­ den Elektromotoren als Antriebsorgan für Pumpen, insbe­ sondere Spaltpolmotoren, mit einem in wassergeschmierten Lagern des Stators drehbaren Rotor, dadurch gekennzeich­ net, daß auf den Stator oder den Stator und den Rotor vermittels eines ersten Tauchvorgangs eine Katophorese­ lackierung als Grundschicht aufgetragen und nachfolgend durch einen zweiten Tauchvorgang ein dünnflüssiger, ge­ gen chemischen Einflüssen beständiger Ein- oder Mehrkom­ ponentenlack als Versiegelungsschicht aufgebracht wer­ den.1. A method of corrosion protection for running in water, the electric motors as a drive for pumps, in particular special shaded-pole motors, with a rotatable rotor in water-lubricated bearings of the stator, characterized in that a catophoresis on the stator or the stator and the rotor by means of a first immersion process applied as a base layer and then a second immersion process applied a thin, one-component or multi-component lacquer resistant to chemical influences as a sealing layer. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Versiegelungsschicht durch einen Ein- oder Mehr­ komponentenklarlack gebildet wird.2. The method according to claim 1, characterized in that that the sealing layer by one or more component clear lacquer is formed. 3. Verfahren zum Korrosionsschutz für in Wasser lauf en­ den Elektromotoren als Antriebsorgan für Pumpen, insbe­ sondere Spaltpolmotoren, mit einem in wassergeschmierten Lagern des Stators drehbaren Rotor, dadurch gekennzeich­ net, daß auf den Rotor oder den Rotor und den Stator eine Polyamidpulverbeschichtung nach dem Wirbelsinter- Verfahren aufgebracht wird.3. Process for corrosion protection for running in water the electric motors as a drive element for pumps, esp special shaded-pole motors, with one in water-lubricated Bearings of the stator rotatable rotor, characterized net that on the rotor or the rotor and the stator a polyamide powder coating after the spine sintering Procedure is applied.
DE19934306897 1993-03-05 1993-03-05 Method for corrosion protection for electric motors which run in water Withdrawn DE4306897A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934306897 DE4306897A1 (en) 1993-03-05 1993-03-05 Method for corrosion protection for electric motors which run in water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934306897 DE4306897A1 (en) 1993-03-05 1993-03-05 Method for corrosion protection for electric motors which run in water

Publications (1)

Publication Number Publication Date
DE4306897A1 true DE4306897A1 (en) 1994-09-08

Family

ID=6482005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934306897 Withdrawn DE4306897A1 (en) 1993-03-05 1993-03-05 Method for corrosion protection for electric motors which run in water

Country Status (1)

Country Link
DE (1) DE4306897A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271747A1 (en) * 2001-06-27 2003-01-02 E + A Elektromaschinen und Antriebe AG Cooling of the stator of an air-gap sleeve motor
DE10144653A1 (en) * 2001-09-11 2003-04-03 Ate Antriebstechnik Und Entwic Permanently excited electromechanical machine for operating in liquids and gases, has an encapsulated/compound-filled stator fitted on a coil unit.
DE102016217433A1 (en) 2016-09-13 2018-03-15 Robert Bosch Gmbh Rotor for a wet-running electric machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271747A1 (en) * 2001-06-27 2003-01-02 E + A Elektromaschinen und Antriebe AG Cooling of the stator of an air-gap sleeve motor
DE10144653A1 (en) * 2001-09-11 2003-04-03 Ate Antriebstechnik Und Entwic Permanently excited electromechanical machine for operating in liquids and gases, has an encapsulated/compound-filled stator fitted on a coil unit.
DE10144653B4 (en) * 2001-09-11 2006-05-11 Ate Antriebstechnik Und Entwicklungs Gmbh Permanently energized electromechanical machine for operation in liquids and gases
DE102016217433A1 (en) 2016-09-13 2018-03-15 Robert Bosch Gmbh Rotor for a wet-running electric machine

Similar Documents

Publication Publication Date Title
JP6723936B2 (en) Indicator paint for metal surface
EP1163378B1 (en) Chemically passivated object made of magnesium or alloys thereof
KR102379587B1 (en) Method for coating metal surfaces of substrates and composition for using in said method
WO1995005496A1 (en) Composition and method for treatment of phosphated metal surfaces
CA1243564A (en) Autodeposition post-bath rinse
DE102009028025A1 (en) Multi-stage process for the treatment of metal surfaces prior to dip coating
US6004628A (en) Metal corrosion protection with wash coat of polyphenylene oxide
JP2023511727A (en) Surface treatment method for aluminum-based parts
DE4306897A1 (en) Method for corrosion protection for electric motors which run in water
EP1879288A3 (en) Rotation angle determination for an electric motor
DE1941563C3 (en) Process for cleaning electrical machines
EP0998596B1 (en) Electric dip coating
WO2003090938A1 (en) Method for inhibiting corrosion by post-dip of coated parts
DE2046449A1 (en) Process for applying protective coatings to metal objects
DE3133734A1 (en) Winding for electrical machines
DE1696652A1 (en) Method for applying an organic protective layer to metallic strips or wires, in particular steel strips or wires
DE881547C (en) Method for insulating laminated cores for electrical machines
DE69836908T2 (en) METAL CORROSION PROTECTION WITH WASHCOAT OF POLYPHENYLENE OXIDE
DE3403267C2 (en)
DE60319795T2 (en) Chromate-free pretreatment process for metal alloys
DE2700612A1 (en) PROCESS FOR PREVENTING CORROSION ON STEEL WORKPIECES
DE19723975B4 (en) Continuous, computer-controlled process for the production of black-chromated surface-defect-free, complete injection-molded parts made of magnesium alloys with electrically conductive and optimally adhesive surface areas, and application of this method
WO2002033145A2 (en) Adhesion promoter for varnishes and adhesives applied to metal
DE2363667A1 (en) Selective anodic oxidn of aluminium components - process using mask of resin and hardener, cured by heat-treatment
DE102004055458A1 (en) Method and device for painting workpieces

Legal Events

Date Code Title Description
8139 Disposal/non-payment of the annual fee