EP1056551A1 - Procede et dispositif pour enlever des couches d'oxyde sur des elements constitutifs - Google Patents

Procede et dispositif pour enlever des couches d'oxyde sur des elements constitutifs

Info

Publication number
EP1056551A1
EP1056551A1 EP98961153A EP98961153A EP1056551A1 EP 1056551 A1 EP1056551 A1 EP 1056551A1 EP 98961153 A EP98961153 A EP 98961153A EP 98961153 A EP98961153 A EP 98961153A EP 1056551 A1 EP1056551 A1 EP 1056551A1
Authority
EP
European Patent Office
Prior art keywords
component
medium
oxide layer
components
container
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Withdrawn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
EP98961153A
Other languages
German (de)
English (en)
Inventor
Holger Englisch
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.)
ENGLISCH, HOLGER
Original Assignee
Claas Saulgau GmbH
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 Claas Saulgau GmbH filed Critical Claas Saulgau GmbH
Publication of EP1056551A1 publication Critical patent/EP1056551A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations

Definitions

  • the invention relates to a method for removing impurities and oxide layers on components formed by laser treatment according to the preamble of claim 1 and a device for carrying out this method according to the preamble of claim 10.
  • thermal cutting processes such as cutting using a pressurized inflamed medium that can be adjusted via nozzles in the flame cross section and laser cutting technology are becoming increasingly important, particularly in the area of cutting semi-finished products.
  • components made of metallic materials, in particular steel are surface-coated, such coatings being achieved in the simplest case by means of paints or varnishes and associated with an increased technical and technological outlay by means of plastics or non-ferrous metals.
  • coatings In order for such coatings to achieve good and therefore long-lasting adhesion to the component surfaces to be coated, these have to meet certain qualitative requirements.
  • Good adhesion of the coating medium requires a grease and dirt-free and chemically pretreated component surface.
  • the cross-hatch characteristic value which according to DEN EN ISO 2409 is used as a characteristic value for assessing the quality of adhesion of the coating medium on the coated component surface, depends on its manufacturing process. If, for example, components consisting of iron-containing metal compounds are heat-treated (thermal separation processes, welding), the surrounding atmospheric oxygen reacts with the material of the component that is very hot in the working area, so that an oxide layer forms on the component in this area, which is inhomogeneous compared to the base material Lattice structure leads to an extreme deterioration in the adhesion of coating materials. From a standing start Methods such as sandblasting and pickling are known in the art, with the aid of which the oxide layers formed can be removed from the component.
  • a component produced by thermal separation processes or by welding can always be wetted with grease or oil and contaminated, such a component must be coated with a high quality coating in a grease and dirt dissolving medium consisting of acidic or alkaline substances as well as wetting agents and surfactants. washed and sandblasted or pickled to remove the oxide layer, for example.
  • This requires a complex, time-consuming technology, which requires a considerable amount of space for the arrangement of the individual processing modules and is therefore expensive, since, for example, sandblasting and cleaning of the component must be carried out separately. Since cleaning, pretreatment and coating are carried out in immersion baths arranged in a row in many industrial processes, sandblasting can be difficult to adapt to this technological process.
  • the metallic surface reacts with the atmospheric oxygen surrounding it to form a glass-like, very hard layer which cannot be removed with the ultrasound processes known from the prior art, since the components contained in the liquid media are unable to form the lattice structure to change the glass-like oxide layer so that an amorphous coating is formed, which can then be easily removed by ultrasonic vibrations.
  • the invention is therefore based on the object of providing a method of the type mentioned at the outset and an apparatus for carrying out the method, by means of which an oxide layer formed on components by laser action can be removed by pretreating the components in a medium before contacting them with ultrasonic waves , which It is also able to convert the lattice structure of the glass-like oxide layer into an amorphous layer that can be easily removed by sound waves and, in addition, degreasing, cleaning and oxide layer removal can be carried out in one operation, with the components being converted from an oxide layer-removing to a grease-removing and cleaning processing module omitted and the media used for degreasing, cleaning and oxide layer removal have an aggregate state adapted to the technological process.
  • the object is achieved by a method for removing impurities and oxide layers on components according to the characterizing features of claim 1 and a device for carrying out this method according to the characterizing features of claim 10.
  • the component surfaces to be coated can be cleaned, degreased and freed from the oxide layer without this this requires a conversion to another work module. Due to the fact that the medium used is liquid, the device required to carry out the proposed method can be fitted well into existing technological processes.
  • the chemical substances to be used are also not aggressive, do not form any vapors that are harmful to health and are good for the environment (pH-neutral).
  • Figure 1 is a schematic representation of the inventive method
  • Figure 2 is a schematically illustrated device for performing the method, the vibrating rods are arranged in a plate shape on the container wall
  • Figure 3 is a schematically illustrated device for performing the method, wherein the vibrating rods have circular cross-sections and are arranged distributed on the container bottom.
  • a container 1 is filled with a liquid medium 2 consisting of the components K1-K3.
  • the component K1 is formed by phosphorus derivatives, which are chemically able to convert the lattice structure of the glass-like oxide layer 4 created by laser action into an amorphous layer to convert
  • the component K2 contained in the liquid medium 2 has the property of removing the impurities adhering to the surface of the component 3, such as dirt particles, residues from previous processing methods, oils and greases.
  • the component K3, which is also present in the liquid medium 2 is composed of constituents which favors the detachment of the oxide layer 4 located on the component 3, which can occur at different locations on the component 3 in different sizes and frequencies, while the component K2 itself Known and therefore not explained in detail, chemical substances usable for cleaning purposes, the component K3 also comprises known from the prior art, the surface tension of the water reducing surfactants and non-metal components complexing agents.
  • the main component of the medium 2 is water
  • the level of the medium 2 in the container 1 must be chosen so that the component 3 is completely or enclosed in the area to be machined by this.
  • the vibration-generating vibrating rod 5 is completely enclosed by the medium 2.
  • the vibrating rods 5 After applying a voltage, the vibrating rods 5 generate vibrations which propagate as sound waves 6 depending on the shape and arrangement of the vibrating rods 5 in the medium 2.
  • a defined one is provided in the container 1, which is provided with one or more vibrating oscillating rods 5 and filled with medium 2
  • the component K1 of the medium 2 leads to a change in the lattice structure of the oxide layer 4 in such a way that the glass-like oxide layer 4 produced by laser action is converted into an amorphous layer by chemical means.
  • the component K2 in cooperation with the components K1 and K3, leads to the loosening of impurities on the component surface and the oxide layer 4 along the edge 7 of the component 3, which is also on the surface of the component 3 and changes in its lattice structure and sound waves 6 propagating in the medium 2 finally ensure that the oxide layer 4 detached from the component 3 is removed therefrom and that the component 3 reaches a surface good at these points, which creates favorable conditions for the adhesion of
  • the vibrating rod (s) 5 can be put into operation from the beginning of the immersion of component 3 in medium 2 or only after a certain exposure time from medium 2 to component 3
  • FIGS. 2 and 3 devices 8 according to the invention are described, in the trough-shaped container 1 which is open on the top and is indicated for reasons of clarity only in its circumference, the method according to the invention is carried out residues 9 are disposed of via piping systems and suction devices. which are known and widely used in the field of cleaning by means of liquid media, so that they are not shown and explained in more detail.
  • the connection systems 10, 11, 12 attached to the container 1 for the piping systems not described in detail and the power supply are designed so that the Vornchtung 8 either separately or in existing technological processes frequently encountered in practice in the surface treatment of components 3.
  • the container can be loaded with one or more components 3 either manually or, as shown in FIG.
  • the vibrating rods 5, 5a, 5b arranged in the container are, depending on the shape of their cross section, either attached to the rare walls la-ld of the container 1 or to the base le thereof.
  • the oscillating rod 5a can, in the form of oscillating plates 16 that emit vibration on one side, as required in pairs on opposite sides la, ld or lb, lc, on all sides la-d, or only on one side la-d of the container 1
  • Be arranged in cross section circular vibrating rod 5b ( Figure 3) generate in the medium 2 sound waves 6 spreading on all sides, so that vibrating rod 5b designed in this way can be arranged free-standing in the container 1 and between the components 3 located in the medium 2.
  • the effectiveness of the action of the sound waves 6 on the components 3 can be improved, since in comparison to the vibrating plates 16 located on the container side walls la-d, free-standing vibrating rods 5b can be arranged between the components 3 in such a way that considerably fewer of them the sound waves 6 attenuating components 3 must be penetrated.
  • the frequency of the vibrating rods 5a, 5b is advantageously adjustable so that 2 sound waves 6 in the range from 10 kHz to 100 kHz can be generated in the medium.

Abstract

L'invention concerne un procédé permettant simultanément de nettoyer des éléments constitutifs (3) souillés qui présentent également des dépôts collants de graisse ou d'huile, et d'enlever des couches d'oxyde (4) situées sur lesdits éléments constitutifs (3), qui résultent de traitements thermiques, notamment à l'aide de lasers. L'invention concerne en outre un dispositif approprié pour mettre ledit procédé en oeuvre. La couche d'oxyde (4) vitreuse résultant de l'action du laser est convertie par voie chimique en une couche amorphe par un constituant (K1) du milieu fluide (2), qui présente des dérivés phosphorés, de manière que la couche d'oxyde (4) soit aisée à enlever de l'élément constitutif (3). A cet effet, l'élément constitutif (3) muni d'une couche d'oxyde (4) est entouré d'une substance (32) dans un récipient (1), ladite substance éliminant les substances souillant l'élément constitutif et dissolvant la couche d'oxyde (4). Des ondes sonores (6) sont injectées par l'intermédiaire de tiges oscillantes (5) dans ladite substance, et entraînent l'élimination de la couche d'oxyde (4) située sur l'élément constitutif (3). Le récipient (1) se présente de manière que le procédé proposé puisse être intégré et mis en oeuvre séparément ou dans des processus technologique d'ores et déjà existants, concernant le traitement de surfaces d'éléments constitutifs.
EP98961153A 1998-01-19 1998-11-07 Procede et dispositif pour enlever des couches d'oxyde sur des elements constitutifs Withdrawn EP1056551A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19801738 1998-01-19
DE19801738 1998-01-19
PCT/EP1998/007116 WO1999036197A1 (fr) 1998-01-19 1998-11-07 Procede et dispositif pour enlever des couches d'oxyde sur des elements constitutifs

Publications (1)

Publication Number Publication Date
EP1056551A1 true EP1056551A1 (fr) 2000-12-06

Family

ID=7854983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98961153A Withdrawn EP1056551A1 (fr) 1998-01-19 1998-11-07 Procede et dispositif pour enlever des couches d'oxyde sur des elements constitutifs

Country Status (3)

Country Link
EP (1) EP1056551A1 (fr)
AU (1) AU1667599A (fr)
WO (1) WO1999036197A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2784492T3 (es) * 2009-12-22 2020-09-28 Tech Sonic Lp Aparato para limpiar componentes industriales

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB998575A (en) * 1962-01-17 1965-07-14 Noburo Sasaki Process for cleaning metal surfaces and apparatus therefor
GB1488252A (en) * 1973-12-15 1977-10-12 Kerry Ultrasonics Ultrasonic cleaning apparatus
DE3339048A1 (de) * 1983-10-27 1985-05-09 Nea Nuclear Engineering Fuer A Verfahren zur dekontamination von feststoffkoerpern, sowie vorrichtung und ultraschallquelle zur durchfuehrung des verfahrens
JPS6250488A (ja) * 1985-08-29 1987-03-05 Ishikawajima Harima Heavy Ind Co Ltd 鋼材のスケ−ル除去方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9936197A1 *

Also Published As

Publication number Publication date
WO1999036197A1 (fr) 1999-07-22
AU1667599A (en) 1999-08-02

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