EP2026920B1 - Method for producing a container from aluminium sheets - Google Patents
Method for producing a container from aluminium sheets Download PDFInfo
- Publication number
- EP2026920B1 EP2026920B1 EP07729813A EP07729813A EP2026920B1 EP 2026920 B1 EP2026920 B1 EP 2026920B1 EP 07729813 A EP07729813 A EP 07729813A EP 07729813 A EP07729813 A EP 07729813A EP 2026920 B1 EP2026920 B1 EP 2026920B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel tank
- sheets
- aluminium
- container
- tank
- 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.)
- Not-in-force
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/02—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape
- B65D7/06—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by shape of polygonal cross-section, e.g. tins, boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0147—Shape complex
- F17C2201/0157—Polygonal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/054—Size medium (>1 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/058—Size portable (<30 l)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0617—Single wall with one layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0646—Aluminium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0648—Alloys or compositions of metals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/21—Shaping processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/221—Welding
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/23—Manufacturing of particular parts or at special locations
- F17C2209/232—Manufacturing of particular parts or at special locations of walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/035—High pressure (>10 bar)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/011—Improving strength
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/012—Reducing weight
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
- F17C2270/0171—Trucks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0184—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
Definitions
- the invention relates to a method for producing a container from sheets of aluminum or an aluminum alloy, wherein the surfaces of the aluminum sheets are at least partially visible on the finished container. Moreover, the invention relates to a corresponding container at least partially consisting of sheets of aluminum or an aluminum alloy.
- a container in the context of the present invention are understood in particular technical container for the transport of liquid, gaseous or solid materials, such as pressure vessels, fuel tanks or transport containers for liquid or pourable grades.
- Such a container and a corresponding method for its production are already out JP-2000 234699 A known.
- these containers consist of a plurality of assembled or also of individual, shaped aluminum sheets.
- Aluminum sheet trays are increasingly replacing containers made of sheet steel due to weight savings.
- mechanical properties of the containers made of aluminum sheets are also decorative properties of the container in the foreground.
- fuel tanks for trucks often consist of several joined segments, which are made of individual aluminum sheets. Due to different production parameters or a different storage time of the aluminum sheets used, these often have different surface appearance.
- the fuel tanks are therefore surface-coated or painted in order to obtain a homogeneous surface.
- the problem with the surface coating of the container is that it is complicated and leads to additional costs in the production of the container.
- the surface-coated containers do not exhibit the typical decorative metallic luster of an uncoated aluminum surface. Nevertheless, in order to provide containers with uncoated aluminum surfaces and a uniform appearance, prior to assembly, the various aluminum sheets have been subjected to scrutiny with respect to their surface appearance, and only aluminum sheets having the same or similar characteristics have been used for the production.
- the present invention has the object to provide a method for producing a container made of aluminum sheets, with which containers with decorative, visible aluminum surfaces can be produced with little effort.
- the invention has for its object to propose containers produced by the method.
- the above-described object is achieved for a generic method according to claim 1, characterized in that by forming and / or joining the aluminum sheets, which are visible on the finished container, the container is at least partially prefabricated and subsequently the entire, at least prefabricated containers are subjected to surface treatment by mechanical blasting, leaving the visible surfaces of the aluminum sheets unattended.
- the different appearance of the aluminum sheets used can be changed so that the containers have aluminum surfaces with a uniform, decorative appearance and metallic luster.
- resulting surface defects which have so far led to rejects in the production, eliminated to some extent, so that the rejects and rework share in the production of the container with the inventive method can be significantly reduced.
- the containers thus produced can be used very well uncoated.
- a further coating of the aluminum surfaces can be dispensed with, so that the method according to the invention is particularly cost-effective.
- the aluminum surfaces of the containers are solidified by mechanical blasting, making the containers more resistant to mechanical surface damage.
- the container is finished by forming and / or joining the aluminum sheets and the entire finished container is mechanically blasted, so that the surface treatment of the container takes place in the last manufacturing step. Due to the advantageous method, surface-defect-free containers can therefore be made available which have a particularly decorative surface. Preferably, at least the mechanically blasted aluminum surfaces are not subjected to any further coating and therefore remain uncoated.
- the mechanical blasting is carried out by glass beads, corundum, fine corundum, sand and / or steel balls.
- Glass beads, corundum, corundum and sand have the advantage over steel balls that they do not lead to any additional entry of iron in the blasted aluminum surfaces, which should be avoided for corrosion reasons.
- steel balls high solidification of the aluminum surface can be achieved, so that the resistance of the aluminum surfaces to mechanical influences, such as rockfall, can be increased more.
- other agents or their mixtures for mechanical blasting are also known as rockfall.
- the container is a pressure vessel, a fuel tank, in particular a modular fuel tank or a transport container for liquid or bulk goods. All of these containers are often in a modular design or from a plurality of Aluminum sheets produced and preferably used uncoated, so that these containers can be produced particularly economically with the inventive method.
- the aluminum sheets consist of an aluminum alloy of the type 3xxx, 5xxx and / or 6xxx.
- Aluminum alloys of the type 3xxx are characterized by a good forming behavior, so that the joining and forming of the aluminum sheets to a container succeeds in a simple manner.
- the strength values of the 3xxx aluminum alloys are not as high as those of the 5xxx and 6xxx type aluminum alloys.
- Aluminum alloys of type 6xxx have the highest strength values of the mentioned types of alloys.
- the forming properties of the 6xxx aluminum alloy are again not as good as those of the 5xxx type.
- a good compromise between very good strength properties, good formability and good corrosion resistance is the aluminum alloy type 5xxx. All three types of alloy mentioned have in common that they tend in a mechanical blasting to a high surface hardening, the resistance of the aluminum surface in terms of mechanical damage clearly improved.
- the above-described object is achieved by a generic container according to claim 5, characterized in that the visible aluminum surfaces after assembly of at least the visible aluminum sheets by joining and / or forming are surface-treated by mechanical blasting of the entire, at least prefabricated container, the visible surfaces of the aluminum sheets being unvisited.
- the mechanical blasting of the aluminum surfaces after assembly of the container results in a homogeneous appearance of the aluminum surfaces, even if they have surface defects or different surface appearance from surface treatment by mechanical blasting from the forming process.
- the visible surfaces of the aluminum sheets of the container are uncoated, so that the costs for the surface coating, for example for painting and drying, can be saved.
- the aluminum sheets of the container are made of an aluminum alloy of the type 3xxx, 5xxx and / or 6xxx.
- the aluminum alloys mentioned can be blasted well mechanically and show a clear hardening of the surface after blasting.
- the different types of aluminum alloys depending on the properties described above for the production of a container according to the invention or individual segments of a container according to the invention can be selected.
- the container according to the invention is a pressure vessel, a fuel tank, in particular a modular fuel tank or a Transport container for gaseous, liquid or pourable goods.
- the said containers are usually made of a plurality of aluminum sheets, so that their surfaces must be coated in order to obtain a uniform appearance of the surfaces.
- the mechanical surface of the various surfaces is given a uniform surface texture by the mechanical blasting performed after the assembly, thereby even eliminating surface defects of production at least to a certain extent.
- the preferably uncoated used pressure vessel, fuel tank and transport container can be provided according to the invention in a simple and cost-effective manner and yet meet high decorative requirements.
- the container is constructed of several segments made of aluminum sheets.
- the individual segments then do not have to be selected according to the invention according to their surface properties and joined together, so that the amount of rejects in the production of the container can be significantly reduced.
- the Indian Fig. 1 shown fuel tank 1 of a truck consists of three segments 2, 3, 4, which are interconnected by welds 5, 6.
- the three segments 2, 3, 4, separated from each other, produces aluminum sheets originating from different production lots.
- the different segments 2, 3, 4 can also consist of different, adapted to the respective function aluminum alloys or have only different thicknesses.
- the different functions of the segments are indicated by a filling opening 3a and treads 4a.
- the associated different process parameters of the aluminum sheets used for the production of the segments 2, 3, 4 results in a different appearance of the aluminum surfaces, which is perceived particularly clearly by the human eye.
- the mechanical blasting of the aluminum surfaces of the container according to the invention results in that scratches or defects introduced to the surfaces, for example, in the manufacture of the sheets, can be eliminated to some extent.
- the reject and reworking share in the production of the containers can therefore be significantly reduced.
- a particularly good solidification of the surface without removing too much material on the aluminum surface is further achieved by the particles, which are used for blasting, are directed substantially perpendicular to the radiating aluminum surfaces. It is also conceivable to direct the particles at a different angle to the aluminum surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Rigid Or Semi-Rigid Containers (AREA)
- Laminated Bodies (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Behälters aus Blechen aus Aluminium oder einer Aluminiumlegierung, wobei die Oberflächen der Aluminiumbleche am fertigen Behälter zumindest teilweise sichtbar sind. Darüber hinaus betrifft die Erfindung einen entsprechenden Behälter zumindest teilweise bestehend aus Blechen aus Aluminium oder einer Aluminiumlegierung.The invention relates to a method for producing a container from sheets of aluminum or an aluminum alloy, wherein the surfaces of the aluminum sheets are at least partially visible on the finished container. Moreover, the invention relates to a corresponding container at least partially consisting of sheets of aluminum or an aluminum alloy.
Als Behälter im Sinne der vorliegenden Erfindung werden insbesondere technische Behälter zum Transport von flüssigen, gasförmigen oder festen Stoffen verstanden, beispielsweise Druckbehälter, Kraftstoffbehälter oder Transportbehälter für flüssige oder schüttfähige Güten. Einen solchen Behälter und ein entsprechendes Verfahren zur dessen Herstellung sind bereits aus
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Verfahren zur Herstellung eines Behälters aus Aluminiumblechen zur Verfügung zu stellen, mit welchem mit geringem Aufwand Behälter mit dekorativen, sichtbaren Aluminiumoberflächen hergestellt werden können.On this basis, the present invention has the object to provide a method for producing a container made of aluminum sheets, with which containers with decorative, visible aluminum surfaces can be produced with little effort.
Darüber hinaus liegt der Erfindung die Aufgabe zugrunde nach dem Verfahren hergestellte Behälter vorzuschlagen.In addition, the invention has for its object to propose containers produced by the method.
Gemäß einer ersten Lehre der vorliegenden Erfindung wird die oben aufgezeigte Aufgabe für ein gattungsgemäßes Verfahren gemäss Anspruch 1 dadurch gelöst, dass durch Umformen und/oder Fügen der Aluminiumbleche, welche am fertigen Behälter sichtbar sind, der Behälter zumindest teilweise vorgefertigt wird und nachfolgend der gesamte, zumindest vorgefertigte Behälter einer Oberflächenbearbeitung durch mechanisches Strahlen unterzogen wird, wobei die sichtbaren Oberflächen der Aluminiumbleche unbesichtet bleiben.According to a first teaching of the present invention, the above-described object is achieved for a generic method according to claim 1, characterized in that by forming and / or joining the aluminum sheets, which are visible on the finished container, the container is at least partially prefabricated and subsequently the entire, at least prefabricated containers are subjected to surface treatment by mechanical blasting, leaving the visible surfaces of the aluminum sheets unattended.
Es hat sich überraschenderweise gezeigt, dass durch ein mechanisches Strahlen des bereits teilweise fertiggestellten Behälters das unterschiedliche Aussehen der verwendeten Aluminiumbleche so verändert werden kann, dass die Behälter Aluminiumoberflächen mit einheitlichem, dekorativem Aussehen und metallischem Glanz aufweisen. Zusätzlich werden durch das mechanische Strahlen auch während der Herstellung, beispielsweise beim Umformen oder Fügen, entstandene Oberflächenfehler, welche bisher zu Ausschuss in der Produktion geführt haben, bis zu einem gewissen Grad beseitigt, so dass der Ausschussanteil und Nacharbeitsanteil bei der Herstellung der Behälter mit dem erfindungsgemäßen Verfahren deutlich verringert werden kann. Die so hergestellten Behälter können sehr gut unbeschichtet verwendet werden. Auf eine weitere Beschichtung der Aluminiumoberflächen kann verzichtet werden, so dass das erfindungsgemäße Verfahren besonders kostengünstig ist. Darüber hinaus werden die Aluminiumoberflächen der Behälter beim mechanischen Strahlen verfestigt, wodurch die Behälter gegen mechanische Oberflächenbeschädigungen resistenter werden.It has surprisingly been found that by mechanical blasting of the already partially finished container, the different appearance of the aluminum sheets used can be changed so that the containers have aluminum surfaces with a uniform, decorative appearance and metallic luster. In addition, by the mechanical blasting even during manufacture, for example, during forming or joining, resulting surface defects, which have so far led to rejects in the production, eliminated to some extent, so that the rejects and rework share in the production of the container with the inventive method can be significantly reduced. The containers thus produced can be used very well uncoated. A further coating of the aluminum surfaces can be dispensed with, so that the method according to the invention is particularly cost-effective. In addition, the aluminum surfaces of the containers are solidified by mechanical blasting, making the containers more resistant to mechanical surface damage.
Gemäß einer ersten Ausgestaltung des erfindungsgemäßen Verfahrens wird durch Umformen und/oder Fügen der Aluminiumbleche der Behälter fertig hergestellt und der gesamte fertig hergestellte Behälter mechanisch gestrahlt, so dass die Oberflächenbearbeitung des Behälters im letzten Fertigungsschritt stattfindet. Durch das vorteilhafte Verfahren können daher besonders leicht oberflächenfehlerfreie Behälter zur Verfügung gestellt werden, die eine besonders dekorative Oberfläche aufweisen. Vorzugsweise werden zumindest die mechanisch gestrahlten Aluminiumoberflächen keiner weiteren Beschichtung unterzogen und bleiben daher unbeschichtet.According to a first embodiment of the method according to the invention, the container is finished by forming and / or joining the aluminum sheets and the entire finished container is mechanically blasted, so that the surface treatment of the container takes place in the last manufacturing step. Due to the advantageous method, surface-defect-free containers can therefore be made available which have a particularly decorative surface. Preferably, at least the mechanically blasted aluminum surfaces are not subjected to any further coating and therefore remain uncoated.
Gemäß einer nächsten weitergebildeten Ausführungsform des erfindungsgemäßen Verfahrens erfolgt das mechanische Strahlen durch Glasperlen, Korund, Edelkorund, Sand und/oder Stahlkugeln. Glasperlen, Korund, Edelkorund und Sand weisen gegenüber Stahlkugeln den Vorteil auf, dass sie zu keinem zusätzlichen Eintrag von Eisen in die gestrahlten Aluminiumoberflächen führen, welcher aus Korrosionsgründen vermieden werden soll. Andererseits können mit Stahlkugeln hohe Verfestigungen der Aluminiumoberfläche erzielt werden, so dass die Widerstandsfähigkeit der Aluminiumoberflächen gegenüber mechanischen Einflüssen, beispielsweise Steinschlag, stärker erhöht werden kann. Denkbar ist auch die Verwendung anderer Mittel oder deren Gemische zum mechanischen Strahlen.According to a further developed embodiment of the method according to the invention, the mechanical blasting is carried out by glass beads, corundum, fine corundum, sand and / or steel balls. Glass beads, corundum, corundum and sand have the advantage over steel balls that they do not lead to any additional entry of iron in the blasted aluminum surfaces, which should be avoided for corrosion reasons. On the other hand, with steel balls high solidification of the aluminum surface can be achieved, so that the resistance of the aluminum surfaces to mechanical influences, such as rockfall, can be increased more. Also conceivable is the use of other agents or their mixtures for mechanical blasting.
Vorzugsweise ist der Behälter ein Druckbehälter, ein Kraftstoffbehälter, insbesondere ein modular aufgebauter Kraftstoffbehälter oder ein Transportbehälter für flüssige oder schüttfähige Güter. Alle genannten Behälter werden häufig in modularer Bauweise oder aus einer Mehrzahl von Aluminiumblechen hergestellt und vorzugsweise unbeschichtet verwendet, so dass diese Behälter mit dem erfindungsgemäßen Verfahren besonders wirtschaftlich hergestellt werden können.Preferably, the container is a pressure vessel, a fuel tank, in particular a modular fuel tank or a transport container for liquid or bulk goods. All of these containers are often in a modular design or from a plurality of Aluminum sheets produced and preferably used uncoated, so that these containers can be produced particularly economically with the inventive method.
Gemäß einer nächsten weitergebildeten Ausführungsform des erfindungsgemäßen Verfahrens bestehen die Aluminiumbleche aus einer Aluminiumlegierung vom Typ 3xxx, 5xxx und/oder 6xxx. Aluminiumlegierungen vom Typ 3xxx zeichnen sich durch ein gutes Umformverhalten aus, so dass das Fügen und Umformen der Aluminiumbleche zu einem Behälter auf einfache Weise gelingt. Andererseits sind die Festigkeitswerte der Aluminiumlegierungen vom Typ 3xxx nicht so hoch wie die der Aluminiumlegierungen vom Typ 5xxx und 6xxx. Aluminiumlegierungen vom Typ 6xxx weisen die höchsten Festigkeitswerte der genannten Legierungstypen auf. Allerdings sind die Umformeigenschaften der Aluminiumlegierung 6xxx wiederum nicht so gut wie die des Typs 5xxx. Einen guten Kompromiss zwischen sehr guten Festigkeitseigenschaften, guter Umformbarkeit und guter Korrosionsbeständigkeit stellt die Aluminiumlegierung vom Typ 5xxx dar. Alle drei genannten Legierungstypen ist gemein, dass diese bei einem mechanischen Strahlen zu einer hohen Oberflächenverfestigung neigen, welche die Widerstandsfähigkeit der Aluminiumoberfläche in Hinblick auf mechanische Beschädigungen deutlich verbessert.According to a further developed embodiment of the method according to the invention, the aluminum sheets consist of an aluminum alloy of the type 3xxx, 5xxx and / or 6xxx. Aluminum alloys of the type 3xxx are characterized by a good forming behavior, so that the joining and forming of the aluminum sheets to a container succeeds in a simple manner. On the other hand, the strength values of the 3xxx aluminum alloys are not as high as those of the 5xxx and 6xxx type aluminum alloys. Aluminum alloys of type 6xxx have the highest strength values of the mentioned types of alloys. However, the forming properties of the 6xxx aluminum alloy are again not as good as those of the 5xxx type. A good compromise between very good strength properties, good formability and good corrosion resistance is the aluminum alloy type 5xxx. All three types of alloy mentioned have in common that they tend in a mechanical blasting to a high surface hardening, the resistance of the aluminum surface in terms of mechanical damage clearly improved.
Gemäß einer zweiten Lehre der vorliegenden Erfindung wird die oben hergeleitet Aufgabe durch einen gattungsgemäßen Behälter gemäss Anspruch 5 dadurch gelöst, dass die sichtbaren Aluminiumoberflächen nach einem Zusammenbau zumindest der sichtbaren Aluminiumbleche durch Fügen und/oder Umformen durch mechanisches Strahlen des gesamten, zumindest vorgefertigten Behälters oberflächenbearbeitet sind, wobei die sichtbaren Oberflächen der Aluminiumbleche unbesichtet sind.According to a second teaching of the present invention, the above-described object is achieved by a generic container according to
Wie oben bereits ausgeführt, führt das mechanische Strahlen der Aluminiumoberflächen nach dem Zusammenbau des Behälters zu einem homogenen Erscheinungsbild der Aluminiumoberflächen, selbst wenn diese aus dem Umform- bzw. Fügeprozess Oberflächenfehler oder unterschiedliches Oberflächenaussehen vor der Oberflächenbearbeitung durch mechanisches Strahlen aufweisen.As stated above, the mechanical blasting of the aluminum surfaces after assembly of the container results in a homogeneous appearance of the aluminum surfaces, even if they have surface defects or different surface appearance from surface treatment by mechanical blasting from the forming process.
Vorzugsweise sind die sichtbaren Oberflächen der Aluminiumbleche des Behälters unbeschichtet, so dass die Kosten für die Oberflächenbeschichtung, beispielsweise für Lackieren und Trocknen, eingespart werden können.Preferably, the visible surfaces of the aluminum sheets of the container are uncoated, so that the costs for the surface coating, for example for painting and drying, can be saved.
Gemäß einer nächsten vorteilhaften Ausführungsform des erfindungsgemäßen Behälters bestehen die Aluminiumbleche des Behälters aus einer Aluminiumlegierung vom.Typ 3xxx, 5xxx und/oder 6xxx. Die genannten Aluminiumlegierungen lassen sich gut mechanisch Strahlen und zeigen eine deutliche Verfestigung der Oberfläche nach dem Strahlen. Abhängig vom Anwendungsfall, beispielsweise ob besonders korrosionsbeständige Werkstoffe, besonders gute Umformeigenschaften erforderlich sind oder ein Kompromiss aus beiden Eigenschaften benötigt wird, können die verschiedenen Aluminiumlegierungstypen abhängig von den oben beschriebenen Eigenschaften zur Herstellung eines erfindungsgemäßen Behälters oder einzelner Segmente eines erfindungsgemäßen Behälters ausgewählt werden.According to a next advantageous embodiment of the container according to the invention, the aluminum sheets of the container are made of an aluminum alloy of the type 3xxx, 5xxx and / or 6xxx. The aluminum alloys mentioned can be blasted well mechanically and show a clear hardening of the surface after blasting. Depending on the application, for example, whether particularly corrosion-resistant materials, particularly good forming properties are required or a compromise of both properties is required, the different types of aluminum alloys depending on the properties described above for the production of a container according to the invention or individual segments of a container according to the invention can be selected.
Vorzugsweise ist der erfindungsgemäße Behälter ein Druckbehälter, ein Kraftstoffbehälter, insbesondere ein modular aufgebauter Kraftstoffbehälter oder ein Transportbehälter für gasförmige, flüssige oder schüttfähige Güter. Die genannten Behälter werden in der Regel aus einer Mehrzahl von Aluminiumblechen hergestellt, so dass deren Oberflächen beschichtet werden müssen, um ein einheitliches Aussehen der Oberflächen zu erhalten. Bei den erfindungsgemäßen Behältern wird dagegen durch das im Anschluss an den Zusammenbau durchgeführte mechanische Strahlen den verschiedenen Oberflächen eine einheitliche Oberflächenstruktur verliehen, wodurch sogar Oberflächenfehler aus der Produktion zumindest bis zu einem gewissen Grad beseitigt werden. Die vorzugsweise unbeschichtet eingesetzten Druckbehälter, Kraftstoffbehälter und Transportbehälter können erfindungsgemäß auf einfache und kostengünstige Weise zur Verfügung gestellt werden und dennoch hohen dekorativen Ansprüchen genügen.Preferably, the container according to the invention is a pressure vessel, a fuel tank, in particular a modular fuel tank or a Transport container for gaseous, liquid or pourable goods. The said containers are usually made of a plurality of aluminum sheets, so that their surfaces must be coated in order to obtain a uniform appearance of the surfaces. On the other hand, in the containers of the present invention, the mechanical surface of the various surfaces is given a uniform surface texture by the mechanical blasting performed after the assembly, thereby even eliminating surface defects of production at least to a certain extent. The preferably uncoated used pressure vessel, fuel tank and transport container can be provided according to the invention in a simple and cost-effective manner and yet meet high decorative requirements.
Da bei dem erfindungsgemäßen Behälter auf eine Oberflächenbeschichtung der Aluminiumoberflächen verzichtet werden kann, können die genannten Behälter, wie bereits ausgeführt, besonders wirtschaftlich hergestellt werden.Since in the container according to the invention can be dispensed surface coating of the aluminum surfaces, said container, as already stated, can be produced particularly economically.
Besonders große wirtschaftliche Vorteile ergeben sich zudem dann, wenn der Behälter aus mehreren, aus Aluminiumblechen hergestellten Segmenten aufgebaut ist. Die einzelnen Segmente müssen dann erfindungsgemäß nicht gemäß ihrer Oberflächeneigenschaften ausgewählt und zusammengefügt werden, so dass der Ausschussanteil in der Produktion der Behälter deutlich gesenkt werden kann.Particularly great economic advantages also arise when the container is constructed of several segments made of aluminum sheets. The individual segments then do not have to be selected according to the invention according to their surface properties and joined together, so that the amount of rejects in the production of the container can be significantly reduced.
Es gibt nun eine Vielzahl von Möglichkeiten, das erfindungsgemäße Verfahren zur Herstellung von Behältern sowie die erfindungsgemäßen Behälter weiterzubilden und auszugestalten. Hierzu wird einerseits verwiesen auf die den Patentansprüchen 1 und 6 nachgeordneten Patentansprüche, andererseits auf die Beschreibung eines Ausführungsbeispiels in Verbindung mit der Zeichnung. Die Zeichnung zeigt in einer einzigen Figur ein Ausführungsbeispiel eines nach dem erfindungsgemäßen Verfahren hergestellten Behälters, vorliegend einen Kraftstoffbehälter für einen Lastkraftwagen.There are now a variety of ways to further develop the inventive method for the production of containers and the container according to the invention and embody. For this purpose, on the one hand reference is made to the
Der in der
Claims (8)
- Method for producing a fuel tank, in particular a fuel tank of modular construction, from sheets of aluminium or an aluminium alloy, the surfaces of the aluminium sheets being at least partially visible on the finished fuel tank, wherein the fuel tank is at least partially prefabricated by shaping and/or joining at least the aluminium sheets that are visible on the finished fuel tank, subsequently the entire, at least prefabricated fuel tank being subjected to a surface treatment by mechanical blasting, characterized in that the visible surfaces of the aluminium sheets of the fuel tank remain uncoated.
- Method according to Claim 1,
characterized in that
the tank is produced by shaping and/or joining the aluminium sheets and, in the final production step, the entire, fully fabricated tank is mechanically blasted. - Method according to any one of claims 1 to 2,
characterized in that
mechanical blasting takes place by glass beads, corundum, special fused alumina, sand and/or steel balls. - Method according to any one of claims 1 to 3,
characterized in that
aluminium sheets made from an aluminium alloy of the type 3xxx, 5xxx and/or 6xxx are used. - Fuel tank at least partially made from sheets of aluminium or an aluminium alloy, the surfaces of the aluminium sheets employed being at least partially visible on the fuel tank, in particular produced by a method in accordance with claim 1 to 4, wherein, after at least partial assembly of the fuel tank by joining and/or shaping of the aluminium sheets, the visible aluminium surfaces of the fuel tank are surface treated by mechanical blasting of the entire, at least prefabricated fuel tank, characterized in that the visible surfaces of the aluminium sheets of the fuel tank are uncoated.
- Tank according to Claim 5,
characterized in that
the aluminium sheets of the tank are made from an aluminium alloy of the type 3xxx, 5xxx and/or 6xxx. - Tank according to any one of claims 5 or 6,
characterized in that
the fuel tank is of modular construction. - Tank according to any one of claims 5 to 7,
characterized in that
the tank is constructed of a plurality of segments produced from aluminium sheets (2, 3, 4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006026828A DE102006026828A1 (en) | 2006-06-07 | 2006-06-07 | Method for producing a container from aluminum sheets |
PCT/EP2007/055419 WO2007141217A1 (en) | 2006-06-07 | 2007-06-01 | Method for producing a container from aluminium sheets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2026920A1 EP2026920A1 (en) | 2009-02-25 |
EP2026920B1 true EP2026920B1 (en) | 2009-10-21 |
Family
ID=38512471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07729813A Not-in-force EP2026920B1 (en) | 2006-06-07 | 2007-06-01 | Method for producing a container from aluminium sheets |
Country Status (6)
Country | Link |
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US (1) | US20100015369A1 (en) |
EP (1) | EP2026920B1 (en) |
JP (1) | JP2009539708A (en) |
AT (1) | ATE446150T1 (en) |
DE (2) | DE102006026828A1 (en) |
WO (1) | WO2007141217A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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IT1396769B1 (en) * | 2009-10-23 | 2012-12-14 | Cmt Costr Mecc & Tec | METHOD OF TREATMENT OF STEEL SURFACES IN CASE MACHINES |
WO2019070832A1 (en) * | 2017-10-05 | 2019-04-11 | Fuelie Systems, Inc. | Trailer for transporting fluid |
US11458879B2 (en) | 2017-10-05 | 2022-10-04 | Fuelie Systems, Inc. | Fuel trailer |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD28454A1 (en) * | 1960-06-10 | 1964-04-25 | Werner Schmidt | Method and device for blasting thin-walled parts with a high-quality decorative surface |
US3868762A (en) * | 1971-01-29 | 1975-03-04 | Asea Ab | Method of joining wire or rods of compound material with aluminum core and copper casing |
JPH0680293B2 (en) * | 1988-03-08 | 1994-10-12 | 日本鋼管株式会社 | Exhaust pipe manufacturing method |
DE4021467A1 (en) * | 1990-07-05 | 1992-01-09 | Bayernwald Fruechteverwertung | Improved corrosion protection for aluminium tanks - for food, consisting of flame-sprayed aluminium alloy coating |
DE4021468A1 (en) * | 1990-07-05 | 1992-01-09 | Bayernwald Fruechteverwertung | Reconditioning of porous aluminium tanks - involves roughening surface of porous area and compressing the surface |
JPH04190615A (en) * | 1990-11-22 | 1992-07-09 | Fujikura Ltd | Manufacture of pipe jumper for overhead transmission line |
JPH05273U (en) * | 1991-06-14 | 1993-01-08 | 日本軽金属株式会社 | Fuel tank |
JPH05329561A (en) * | 1992-06-02 | 1993-12-14 | Furukawa Alum Co Ltd | Production of metallic plate having surface of satin pattern |
US5401319A (en) * | 1992-08-27 | 1995-03-28 | Applied Materials, Inc. | Lid and door for a vacuum chamber and pretreatment therefor |
EP1006210A4 (en) * | 1998-03-18 | 2005-02-09 | Taiho Kogyo Co Ltd | Aluminum alloy-based sliding material |
JP2000234699A (en) * | 1999-02-17 | 2000-08-29 | Kanto Koatsu Yoki Seisakusho:Kk | Gas cylinder |
JP3502785B2 (en) * | 1999-04-30 | 2004-03-02 | 象印マホービン株式会社 | Coating structure of cooking vessel and method of forming the same |
JP4843952B2 (en) * | 2004-02-04 | 2011-12-21 | ソニー株式会社 | Manufacturing method of light diffusing sheet replication mold, light diffusing sheet, manufacturing method thereof, and screen |
-
2006
- 2006-06-07 DE DE102006026828A patent/DE102006026828A1/en not_active Withdrawn
-
2007
- 2007-06-01 DE DE502007001809T patent/DE502007001809D1/en active Active
- 2007-06-01 AT AT07729813T patent/ATE446150T1/en active
- 2007-06-01 WO PCT/EP2007/055419 patent/WO2007141217A1/en active Application Filing
- 2007-06-01 US US12/303,306 patent/US20100015369A1/en not_active Abandoned
- 2007-06-01 EP EP07729813A patent/EP2026920B1/en not_active Not-in-force
- 2007-06-01 JP JP2009513659A patent/JP2009539708A/en active Pending
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EP2026920A1 (en) | 2009-02-25 |
WO2007141217A1 (en) | 2007-12-13 |
DE102006026828A1 (en) | 2007-12-13 |
JP2009539708A (en) | 2009-11-19 |
ATE446150T1 (en) | 2009-11-15 |
US20100015369A1 (en) | 2010-01-21 |
DE502007001809D1 (en) | 2009-12-03 |
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