EP0846037B1 - Formkörper aus metallpulver und verfahren zu seiner herstellung - Google Patents
Formkörper aus metallpulver und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- EP0846037B1 EP0846037B1 EP96928457A EP96928457A EP0846037B1 EP 0846037 B1 EP0846037 B1 EP 0846037B1 EP 96928457 A EP96928457 A EP 96928457A EP 96928457 A EP96928457 A EP 96928457A EP 0846037 B1 EP0846037 B1 EP 0846037B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- functional
- retaining plate
- functional surface
- depressions
- adhesive
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 16
- 239000000843 powder Substances 0.000 title claims description 10
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000001747 exhibiting effect Effects 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 21
- 230000001070 adhesive effect Effects 0.000 description 21
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000003825 pressing Methods 0.000 description 8
- 239000011521 glass Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000002730 additional effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
Definitions
- the invention relates to a pressed from a metal powder and / or sintered mirror holding plate, which with at least is provided with a functional surface.
- Moldings produced by the known method can be deburred by sintering after sintering. If by slide grinding when pressing the metal powder burrs are removed from the molded body, the undesirable side effect on that increases versus the ideal shape of the shaped body essentially by Surface grinding is removed while the indentations are in Shape of the pores are preserved. To the molded body with ridges to be provided, it would have to be blasted after surface grinding become. This would be done in an additional step depending on the abrasive and the impact speed of the abrasive on the surface of the molded body Surface structure can be achieved.
- the disadvantage of one such a method is that by what cannot be influenced Impact of the abrasive on the surface of the Shaped body no defined structure can be achieved. Furthermore, the surface of the molded body does not or only has to a small extent the pores typical of sintered components, because these are struck by the abrasive.
- the functional surface it has so far not been possible to use the functional surface to provide a surface structure on a molded body, which is optimally matched to the fact that the molded body is glued to another object. In the event of an overload the adhesive surface therefore often occurs between the adhesive material and the functional surface.
- a similar behavior shows up when a coating is applied to the functional surface and then the coated molded body is glued to an object.
- the separation often occurs due to an overload between the functional surface and the coating because the Surface structure of the functional surface is not optimal on the Use case can be coordinated.
- a sintered metal body is known from FR-A-7 821 220, which is a smooth surface with a variety of irregular distributed depressions.
- EP-A-0 424 109 shows a composite material made from a Aluminum alloy matrix reinforced by a porous metal is, the surface of the cylinder bore a Variety of irregularly distributed holes, grooves and depressions having.
- the invention has for its object the above Avoid disadvantages and as inexpensively as possible to produce a shaped body, namely a mirror holding plate, the one tailored to the respective application has optimal surface structure of the functional surface.
- a metal powder pressed and / or sintered mirror holding plate which are provided with at least one functional surface is the one through a variety of increases and / or Has depressions formed surface structure.
- a Such mirror holding plate has the advantage that the functional surface, optimally trained depending on the desired application can be.
- the functional surface is designed as an adhesive surface is.
- the elevations and / or depressions of the Functional surface formed by a rough surface structure become. Because the functional surface has a rough surface structure the total surface of the functional surface compared to a smooth surface depending increased by the roughness. This results in that when applying an adhesive to the functional surface this accumulates along the elevations and / or depressions and because of the larger total surface between Adhesive and functional surface a much better adhesion of the adhesive on the functional surface guaranteed is. The same advantage arises if instead of one Adhesive a coating on the functional surface is applied.
- the ridges and / or depressions face each other a given shape level a size between about 3 ⁇ m and about 3 mm.
- the minimum roughness to be introduced is limited by the manufacturing technology Possibilities. While the minimum increases and / or The depressions are distributed rather irregularly and have a roughness depth represent, with increasing increases and / or deepening also regular structures such as grooves, Geometric patterns, characters and / or symbols are possible. The size of the roughness can vary depending on the functional Requirements of the use case and by the Manufacturing costs are determined.
- the functional area can either increase and / or decrease have or correspond to a roughness depth Raises and / or depressions, the size of the design of grooves, geometric patterns, characters and / or symbols allows, or any combination of the above the entire width from about 3 ⁇ m to about 3 mm.
- Font- and / or symbols can serve, for example, the molded body to be marked with the manufacturer's name, a type designation apply or a graphic element Design reasons. In the case of labeling, Type designation or graphic design can the elevations and / or depressions amount to about 3 mm also significantly exceed. It is also possible to use the Shaped body with a text and / or picture symbol indicate that for recycling purposes the for the mirror mounting plate used material is evident.
- the surface structure is provided with a coating.
- the coating provides surface protection and / or surface finishing achieved. Through surface protection layers can wear, corrosion or affects the strength properties of the base material become.
- a surface finish lends products Metal additional properties, such as a higher one Resistance to corrosion and oxidation in many cases, however a decorative look.
- Possible processes are: galvanic Processes such as electrolytic deposition without external current Deposition and hot dipping; Infusion; Sintering; thermal spraying, such as flame spraying, arc spraying, Plasma and detonation syringes; Cladding; Enamel; Phosphating and coating with organic or inorganic substances. Because of the on the functional surface applied surface structure is on the one hand improved adhesion between the coating and the functional surface given and on the other hand, the adhesive also adheres better on the coating, since this depends on the thickness Depicts surface structure of the functional surface.
- the molded body is a mirror holding plate.
- Mirror mounting plates are used, for example, in motor vehicles used and have a functional surface and a device to clip on the mirror.
- the functional surface that can be glued to the glass pane of the motor vehicle can also be provided with a coating, for example can be made of enamel.
- the surface structure The functional area comes with a variety of increases and / or depressions designed so that optimal gluing is guaranteed with the glass pane.
- word characters and / or graphic elements for identification contained by the glass pane of are visible from the outside.
- Elevations and / or depressions can be incorporated.
- the ridges and / or depressions can be in the surface of the ram are incorporated so that when pressing of the metal powder, the surface structure accordingly the green compact is transferred.
- Introducing the increases and / or depressions in the pressing of the metal powder is characterized in that the introduction of the surface structure on the functional surface with low energy consumption is possible because the shaped body in the form of the mirror holding plate its final strength is only obtained by sintering. It is also possible that the increases and / or Wells after sintering through a calibration process in the sintered component can be incorporated.
- the functional surface 1 is a top view of the functional surface 1 Mirror mounting plate 2 shown.
- the functional area 1 of the Mirror mounting plate 2 serves as an adhesive surface and is required around the mirror holding plate 2 by means of an adhesive on the Fasten the glass pane of a motor vehicle.
- the adhesive surface has a net-like surface structure 3 on.
- the net-like surface structure that is from a multiplicity of elevations 4 and / or depressions 5 has a larger surface area than one in contrast with a smooth surface.
- the adhesive that is in the wells 5 can penetrate, guaranteed due to the larger Adhesive surface and interlocking in the recesses 5 a better one Adhesive power.
- the mirror holding plate 2 shows a section through the mirror holding plate 2 along the line II-II in Fig. 1.
- the mirror holding plate 2 has a fastening pin 6 with two opposite one another Undercuts 7 and two protruding on both sides Overlaps 8, which serves to turn the mirror on to fix the mirror mounting plate 2.
- Fig. 3 shows the surface structure of the adhesive surface accordingly a detail A according to FIG. 1.
- the elevations 4 and / or depressions 5 of the adhesive surface can be used when pressing the metal powder in a range from about 3 ⁇ m to about 3 mm become.
- a press ram with one of the surface structures is used appropriate surface used.
- the adhesive surface provided with a defined surface structure can also be subjected to surface finishing are made by processes such as enamelling, galvanic process or coating with organic or inorganic substances, whereby due to the increases 4 and / or depressions 5 a high adhesive power between the coating and mirror mounting plate 2 is guaranteed.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Description
- Fig. 1
- eine Aufsicht auf die Funktionsfläche einer Spiegelhalteplatte,
- Fig. 2
- einen Schnitt entsprechend der Linie II-II in Fig. 1,
- Fig. 3
- eine Einzelheit A gemäß Fig. 1.
Claims (7)
- Aus einem Metallpulver gepreßte und gesinterte Spiegelhalteplatte (2), die mit wenigstens einer Funktionsfläche (1) versehen ist, die eine durch eine Vielzahl von Erhöhungen (4) und/oder Vertiefungen (5) gebildete definierte Oberflächenstruktur aufweist.
- Spiegelhalteplatte (2) nach Anspruch 1, dadurch gekennzeichnet, daß die Funktionsfläche als Klebefläche ausgebildet ist.
- Spiegelhalteplatte (2) nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Erhöhungen (4) und/oder Vertiefungen (5) der Funktionsfläche (1) durch eine rauhe Oberflächenstruktur gebildet werden.
- Spiegelhalteplatte (2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Erhöhungen (4) und/oder Vertiefungen (5) gegenüber einer vorgegebenen Formebene (11) eine Größe zwischen etwa 3 µm und etwa 3 mm aufweisen.
- Spiegelhalteplatte (2) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Oberflächenstruktur mit einer Beschichtung versehen ist.
- Verfahren zur Herstellung einer aus einem Metallpulver durch Pressen und Sintern hergestellten Spiegelhalteplatte (2) nach einem der Ansprüche 1 bis 5, die mit wenigstens einer Funktionsfläche (1) versehen ist, dadurch gekennzeichnet, daß beim Pressen und/oder nach dem Sintern in die Oberfläche der Funktionsfläche (1) eine definierte Oberflächenstruktur in Form von Erhöhungen (4) und/oder Vertiefungen (5) eingearbeitet wird.
- Verfahren zur Herstellung einer Spiegelhalteplatte (2) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Erhöhungen (4) und/oder Vertiefungen (5) durch einen Kalibriervorgang nach dem Sintern eingearbeitet werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19531077 | 1995-08-23 | ||
DE19531077A DE19531077A1 (de) | 1995-08-23 | 1995-08-23 | Bauteil mit einer zumindest in Teilbereichen seiner Oberfläche erhöhten Rauheit für eine Preßverbindung mit einem Bauelement sowie Verfahren zu seiner Herstellung als Sinterteil aus Metallpulver |
PCT/EP1996/003573 WO1997007916A1 (de) | 1995-08-23 | 1996-08-13 | Formkörper aus metallpulver und verfahren zu seiner herstellung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0846037A1 EP0846037A1 (de) | 1998-06-10 |
EP0846037B1 true EP0846037B1 (de) | 2001-02-28 |
Family
ID=7770230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96928457A Expired - Lifetime EP0846037B1 (de) | 1995-08-23 | 1996-08-13 | Formkörper aus metallpulver und verfahren zu seiner herstellung |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0846037B1 (de) |
DE (2) | DE19531077A1 (de) |
ES (1) | ES2155619T3 (de) |
WO (1) | WO1997007916A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005022109U1 (de) | 2005-12-19 | 2014-01-09 | Gehring Technologies Gmbh | Kraftschlüssige Verbindung der Stirnflächen zweier Maschinenteile |
DE102005062522C5 (de) * | 2005-12-19 | 2019-04-04 | Gehring Technologies Gmbh | Verfahren zur kraftschlüssigen Verbindung der Stirnflächen zweier Maschinenbauteile zur Übertragung hoher Drehmomente oder Querkräfte |
DE102007016643A1 (de) | 2007-04-05 | 2008-10-09 | Geislinger Gmbh | Kraftschlüssige Spannverbindung und Verfahren zu deren Herstellung |
DE102012214271B4 (de) * | 2012-08-10 | 2014-08-07 | Aktiebolaget Skf | Maschinenanordnung und Verfahren zu ihrer Herstellung |
DE102016204425A1 (de) | 2016-03-17 | 2017-09-21 | Schaeffler Technologies AG & Co. KG | Nockenwellenversteller |
FR3091915B1 (fr) * | 2019-01-17 | 2023-01-06 | Renault Sas | « Pièce métallique pour un moteur à combustion interne et ensemble comportant une telle pièce » |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1576143A (en) * | 1977-07-20 | 1980-10-01 | Brico Eng | Sintered metal articles |
DE3736661C1 (de) * | 1987-10-29 | 1988-07-21 | Mtu Muenchen Gmbh | Verfahren zur Herstellung von Schichten |
EP0424109A3 (en) * | 1989-10-18 | 1991-10-02 | Izumi Industries Ltd. | Aluminium alloy matrix composite for internal combustion engines |
-
1995
- 1995-08-23 DE DE19531077A patent/DE19531077A1/de not_active Ceased
-
1996
- 1996-08-13 WO PCT/EP1996/003573 patent/WO1997007916A1/de active IP Right Grant
- 1996-08-13 EP EP96928457A patent/EP0846037B1/de not_active Expired - Lifetime
- 1996-08-13 ES ES96928457T patent/ES2155619T3/es not_active Expired - Lifetime
- 1996-08-13 DE DE59606522T patent/DE59606522D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1997007916A1 (de) | 1997-03-06 |
ES2155619T3 (es) | 2001-05-16 |
EP0846037A1 (de) | 1998-06-10 |
DE59606522D1 (de) | 2001-04-05 |
DE19531077A1 (de) | 1997-02-27 |
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