EP0947605A1 - Verfahren zum Erhöhen der Korrisionsbeständigkeit eines metallischen Werkstücks sowie Werkstück - Google Patents
Verfahren zum Erhöhen der Korrisionsbeständigkeit eines metallischen Werkstücks sowie Werkstück Download PDFInfo
- Publication number
- EP0947605A1 EP0947605A1 EP99100999A EP99100999A EP0947605A1 EP 0947605 A1 EP0947605 A1 EP 0947605A1 EP 99100999 A EP99100999 A EP 99100999A EP 99100999 A EP99100999 A EP 99100999A EP 0947605 A1 EP0947605 A1 EP 0947605A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- workpiece
- abrasive
- corrosion resistance
- blasting
- alloy
- 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.)
- Granted
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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
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
Definitions
- the invention relates to the field of surface treatment of metallic workpieces to increase the corrosion resistance of a such workpiece.
- the invention relates to a method to increase the corrosion resistance of a metallic workpiece by coating it with a material related to the workpiece has a higher corrosion resistance.
- the invention relates to a workpiece made of metal with a more corrosion-resistant Layer is coated.
- Metallic workpieces made in different ways can be, for example, by a casting or forging process coated on the surface to increase their corrosion resistance. This applies in particular to all FE metals, but can also apply to non-ferrous metals, such as aluminum alloys.
- the corrosion resistance of such a metallic workpiece can by different coatings are increased, both chemical as well as physical coating processes can be used.
- vapor deposition or atomization processes as well as covering the workpieces in gases or components containing liquids. In many cases, one such material can also be galvanically coated.
- To perform Such a coating process requires the metallic Workpieces to be cleaned prior to coating to keep them from previous Machining residues, such as scale or lubricant residues to free.
- the physical Nature such as a cleaning blasting or chemical nature, such as a Can be pickled.
- a cleaning blasting or chemical nature such as a Can be pickled.
- abrasive and chemical cleaning processes used.
- non-ferrous metals such as cast aluminum or forgings undergo a chemical cleaning process after their manufacture Pickling, which usually follows the final step of thermosetting then subjected to the removal of manufacturing residues.
- Pickling usually follows the final step of thermosetting then subjected to the removal of manufacturing residues.
- the in-line manufactured workpieces are made in Repackaged baskets and then fed to a pickling bath.
- pickling agents from ecological Not harmless for reasons, as residues from these baths a not inconsiderable amount of sludge has to be disposed of.
- one upstream of the pickling abrasive cleaning blasting can be provided, for example at Workpieces made of aluminum alloys not on a subsequent one Pickling can be dispensed with because it adheres to the surface of the workpiece Abrasive residue the corrosion resistance of such a workpiece affect.
- the invention lies on the basis of the prior art discussed above therefore on the one hand the task of a method of increasing the corrosion resistance of a metallic workpiece by coating the same with a material that is related to the workpiece has a higher corrosion resistance, to propose which is not only ecologically harmless, but with the one coating the workpiece with a more corrosion-resistant material is made possible with a smaller number of process steps.
- Another object of the invention is to provide a workpiece made of metal, which is coated with a more corrosion-resistant layer, which compared to a smaller number of process steps can be produced with the known methods.
- the first-mentioned object is achieved in that the Coating of the workpiece by blasting the surface of the workpiece with an abrasive under restructuring or reshaping the surface of the workpiece or parts thereof, wherein a Material abrasion occurs on the grains of the blasting media, which abrasion has a higher corrosion resistance than the workpiece and on the surface of the workpiece is connected to the structure Layer.
- the latter task is performed by a metal workpiece, which is coated with a more corrosion-resistant layer, which Workpiece is characterized in that the near-surface areas are reshaped and compressed and that the surface of the workpiece one connected to it by a structural connection Cover layer is coated.
- the workpiece is coated according to the invention by Blasting the workpiece surface, the process parameters of Blasting process (e.g .: abrasive grain, abrasive grain shape, abrasive grain composition, Blasting agent throughput, blasting duration and Beam intensity) are coordinated so that, on the one hand with respect to the workpiece to be coated is provided by the blasting a restructuring of the surface of the workpiece forming areas or a reshaping of the grain boundaries in these areas takes place.
- the material is the abrasive grains of such a nature that it has only such abrasion resistance have that by blasting the workpiece surface on the An abrasion of abrasive material is distributed approximately evenly over the surface accumulates.
- This abrasion goes with his Accumulation on the workpiece surface by continuous blasting a physical structure connection with the workpiece. After completion the blasting process is the workpiece with the abrasion material the abrasive grains are coated. This process can therefore be used as application blasting be designated. Since the invention provides that the material of the abrasive grains and thus the abrasion of the same has a higher corrosion resistance than the material of the Workpiece, is the workpiece after the end of this blasting process coated with a more corrosion-resistant material.
- the blasting process according to the invention is not just cleaning the workpiece surface but also a coating at the same time the same is done with a more corrosion-resistant material. thats why only one for the entire cleaning and coating process Method step, namely that of the blasting according to the invention necessary to a coated with a more corrosion-resistant layer To manufacture the workpiece.
- a specialist in the field of radiation is used to different Workpieces to be blasted depending on the desired ones Workpiece requirements include cleaning or tension blasting to carry out with very different beam process parameters.
- Such a specialist usually determines the beam process parameters in test series.
- a specialist does the same in the method according to the present invention, in which it easily by a series of tests depending on the material of the workpiece and the other requirements placed on it necessary parameters for performing the invention Blasting process determined. It would be beyond the scope of these statements therefore exceed specific information on the beam process parameters to make for the multitude of possible workpiece abrasive constellations.
- the abrasive grains should be dependent of their normal potential in relation to that of the surface of the Workpiece own normal potential must be selected, with the normal potential difference between the material of the surface of the workpiece and the abrasion material of the abrasive grains as far as possible is low. With a very high normal potential difference, appropriate environmental conditions a potential between the two Form materials, the material with the lower Normal potential can be damaged by its property as a sacrificial anode can.
- the workpiece according to the invention stands out, as from the description clarifies the method according to the invention, characterized in that the cleaning and coating process in a single blasting process has been carried out.
- a layer connection of the workpiece is provided, so that on using additional, establishing a connection Fabrics can be dispensed with.
- Such a structural connection is expediently a cold weld, so that a permanent Connection between the more corrosion-resistant top layer and is given to the workpiece.
- FIG. 1 shows an enlarged schematic section of a cross section through the regions of a workpiece 1 near the surface. which has been coated by a blasting process with a layer 2 which is more corrosion-resistant than the material of the workpiece 1.
- the region of the workpiece 1 close to the surface, which has been restructured or solidified by the blasting process, is identified in the figure by the reference symbol 3.
- an AlMgSi alloy was used as the material of the workpiece with a Brinell hardness (HB) of about 100.
- HB Brinell hardness
- the workpiece was cooled down subjected to the blasting process according to the invention.
- an abrasive spherical abrasive grains were used, made of an AlMg alloy exist and have a hardness between 50 and 70 HB to have.
- the uncoated workpiece 1 is inserted into a blasting chamber and blasted in it with the abrasive mentioned above.
- the beam process parameters have been chosen so that the near-surface Area 3 is restructured to give residual compressive stress and that when the abrasive grains hit the surface of the Workpiece 3 is a grit abrasion, which is also caused by the a cold-welded joint immediately after the abrasive particles with the surface of the workpiece.
- the duration of the blasting process depends on after the abrasion resistance of the Abrasive grains, so that the blasting process is provided until a uniform coating of the workpiece 1 by the abrasive grit 2 is done.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Building Environments (AREA)
Abstract
Description
A | x max (µm) | x Q (µm) | A | x max (µm) | x Q (µm) | A | x max (µm) | x Q (µm) | |
Referenz 1 | 10 | 60 | 50 | 10 | 120 | 72 | <5 | 110 | 65 |
Probe 1 | <5 | 20 | 20 | <5 | 40 | 30 | <5 | 30 | 28 |
A | x max (µm) | x Q (µm) | A | x max (µm) | x Q (µm) | A | x max (µm) | x Q (µm) | |
Referenz 2 | 20 | 140 | 64 | 20 | 170 | 74 | >20 | 100 | 53 |
Probe 2 | <10 | 50 | 30 | <5 | 70 | 32 | 5-10 | 40 | 34 |
- 1
- Werkstück
- 2
- Korrosionsbeständigere Beschichtung - Strahlmittelkörnerabrieb
- 3
- Umstrukturierter oberflächennaher Bereich des Werkstückes
Claims (7)
- Verfahren zum Erhöhen der Korrosionsbeständigkeit eines metallischen Werkstückes (1) durch Beschichten desselben mit einem Material (2), welches bezüglich des Werkstückes (1) eine höhere Korrosionsbeständigkeit aufweist, dadurch gekennzeichnet, daß die Beschichtung (2) des Werkstückes (1) durch Strahlen der Oberfläche des Werkstückes (1) mit einem Strahlmittel unter Umstrukturierung oder Umformung der Oberfläche des Werkstückes oder von Teilen davon erfolgt, wobei ein Materialabrieb an den Körnern des Strahlmittels entsteht, welcher Abrieb eine höhere Korrosionsbeständigkeit als das Werkstück (1) aufweist und auf der Oberfläche des Werkstückes (1) eine mit dem Gefüge (3) verbundene Schicht (2) ausbildet.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Durchführung des Verfahrens ein Strahlmittel verwendet wird, dessen einzelne Strahlmittelkörner bezüglich ihrer Härte eine geringere Härte als das Werkstück (1) aufweisen.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Oberfläche des Werkstückes (1) mit einem Strahlmittel bestrahlt wird, wobei die Normalpotentialdifferenz zwischen dem Material der Oberfläche des Werkstückes (1) und demjenigen des Abriebs (2) der Strahlmittelkörner gering oder null ist.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Oberfläche des Werkstückes (1) mit kugeligen Strahlmittelkörnern bestrahlt wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß als Werkstück (1) eine AlMgSi-Legierung oder eine AlMgSiCu-Legierung und als Strahlmittel Strahlmittelkörner aus Aluminium oder einer AlMg-Legierung eingesetzt werden.
- Werkstück aus Metall, das mit einer korrosionsbeständigeren Schicht beschichtet ist, dadurch gekennzeichnet, daß die oberflächennahen Bereiche (3) umgeformt und verdichtet sind und daß die Oberfläche des Werkstückes (1) von einer mit dieser durch eine Gefügeverbindung verbundenen Deckschicht (2) beschichtet ist.
- Werkstück nach Anspruch 6, dadurch gekennzeichnet, daß die Gefügeverbindung zwischen der Werkstückoberfläche und der Deckschicht (2) eine Kaltschweißung ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19814218 | 1998-03-31 | ||
DE19814218A DE19814218A1 (de) | 1998-03-31 | 1998-03-31 | Verfahren zum Erhöhen der Korrosionsbeständigkeit eines metallischen Werkstückes sowie Werkstück |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0947605A1 true EP0947605A1 (de) | 1999-10-06 |
EP0947605B1 EP0947605B1 (de) | 2002-08-21 |
Family
ID=7862990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99100999A Expired - Lifetime EP0947605B1 (de) | 1998-03-31 | 1999-01-21 | Verfahren zum Erhöhen der Korrisionsbeständigkeit eines metallischen Werkstücks sowie Werkstück |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0947605B1 (de) |
AT (1) | ATE222612T1 (de) |
DE (2) | DE19814218A1 (de) |
ES (1) | ES2182406T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6911249B2 (en) * | 1991-06-17 | 2005-06-28 | Medsource Technologies Pittsburgh, Inc. | Surface for use on implantable device |
US10821000B2 (en) | 2016-08-03 | 2020-11-03 | Titan Spine, Inc. | Titanium implant surfaces free from alpha case and with enhanced osteoinduction |
US11370025B2 (en) | 2015-11-20 | 2022-06-28 | Titan Spine, Inc. | Processes for additively manufacturing orthopedic implants followed by eroding |
US11510786B2 (en) | 2014-06-17 | 2022-11-29 | Titan Spine, Inc. | Corpectomy implants with roughened bioactive lateral surfaces |
Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2618572A (en) * | 1950-11-25 | 1952-11-18 | Northrop Aircraft Inc | Method for impact plating |
GB1041620A (en) * | 1964-06-16 | 1966-09-07 | Huettenwerk Oberhausen Ag | Improvements in or relating to processes for coating steel surfaces with layers of corrosion-resisting metal |
US3754976A (en) * | 1971-12-06 | 1973-08-28 | Nasa | Peen plating |
DE3003045A1 (de) * | 1980-01-25 | 1981-07-30 | Zschimmer, Gero, 8000 München | Verfahren zum bearbeiten eines teils mittels eines gaspartikelstrahles |
JPS57108266A (en) * | 1980-12-26 | 1982-07-06 | Mitsui Mining & Smelting Co Ltd | Spray plating method |
JPS57140872A (en) * | 1981-02-24 | 1982-08-31 | Mitsui Mining & Smelting Co Ltd | Projection plating method |
BR8201279A (pt) * | 1982-03-10 | 1983-11-01 | J C Hempel S Skibsvarfe Fabrik | Processo e composicao para limpar superficies metalicas e protege-las coontra corrosao |
JPS59150085A (ja) * | 1983-02-17 | 1984-08-28 | Mitsubishi Heavy Ind Ltd | 亜鉛被覆鋼材の製造方法 |
JPS616283A (ja) * | 1984-06-20 | 1986-01-11 | Mitsubishi Motors Corp | 防振ゴム用金具の防錆処理工法 |
EP0556065A1 (de) * | 1992-02-14 | 1993-08-18 | Dowa Iron Powder Co., Ltd | Verfahren zur Herstellung von Bestrahlungspulver zum mechanischen Beschichten und Bestrahlungsverfahren zu seiner Anwendung |
WO1994008755A1 (en) * | 1992-10-08 | 1994-04-28 | Julius Stephen Csabai | The use of specular hematite as an impact material |
EP0647505A1 (de) * | 1993-10-08 | 1995-04-12 | Entrepose-Montalev | Verfahren und Vorrichtung zur Behandlung von metallischen Werkstücken, die beschichtet oder nicht sind |
JPH08333671A (ja) * | 1995-06-02 | 1996-12-17 | Fuji Kihan:Kk | 常温拡散・浸透メッキ方法 |
WO1998014638A1 (en) * | 1996-10-01 | 1998-04-09 | Vms Holding Ag | Method and apparatus for applying a layer of protecting metal by means of blasting |
-
1998
- 1998-03-31 DE DE19814218A patent/DE19814218A1/de not_active Withdrawn
-
1999
- 1999-01-21 AT AT99100999T patent/ATE222612T1/de not_active IP Right Cessation
- 1999-01-21 DE DE59902392T patent/DE59902392D1/de not_active Expired - Fee Related
- 1999-01-21 EP EP99100999A patent/EP0947605B1/de not_active Expired - Lifetime
- 1999-01-21 ES ES99100999T patent/ES2182406T3/es not_active Expired - Lifetime
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2618572A (en) * | 1950-11-25 | 1952-11-18 | Northrop Aircraft Inc | Method for impact plating |
GB1041620A (en) * | 1964-06-16 | 1966-09-07 | Huettenwerk Oberhausen Ag | Improvements in or relating to processes for coating steel surfaces with layers of corrosion-resisting metal |
US3754976A (en) * | 1971-12-06 | 1973-08-28 | Nasa | Peen plating |
DE3003045A1 (de) * | 1980-01-25 | 1981-07-30 | Zschimmer, Gero, 8000 München | Verfahren zum bearbeiten eines teils mittels eines gaspartikelstrahles |
JPS57108266A (en) * | 1980-12-26 | 1982-07-06 | Mitsui Mining & Smelting Co Ltd | Spray plating method |
JPS57140872A (en) * | 1981-02-24 | 1982-08-31 | Mitsui Mining & Smelting Co Ltd | Projection plating method |
BR8201279A (pt) * | 1982-03-10 | 1983-11-01 | J C Hempel S Skibsvarfe Fabrik | Processo e composicao para limpar superficies metalicas e protege-las coontra corrosao |
JPS59150085A (ja) * | 1983-02-17 | 1984-08-28 | Mitsubishi Heavy Ind Ltd | 亜鉛被覆鋼材の製造方法 |
JPS616283A (ja) * | 1984-06-20 | 1986-01-11 | Mitsubishi Motors Corp | 防振ゴム用金具の防錆処理工法 |
EP0556065A1 (de) * | 1992-02-14 | 1993-08-18 | Dowa Iron Powder Co., Ltd | Verfahren zur Herstellung von Bestrahlungspulver zum mechanischen Beschichten und Bestrahlungsverfahren zu seiner Anwendung |
WO1994008755A1 (en) * | 1992-10-08 | 1994-04-28 | Julius Stephen Csabai | The use of specular hematite as an impact material |
EP0647505A1 (de) * | 1993-10-08 | 1995-04-12 | Entrepose-Montalev | Verfahren und Vorrichtung zur Behandlung von metallischen Werkstücken, die beschichtet oder nicht sind |
JPH08333671A (ja) * | 1995-06-02 | 1996-12-17 | Fuji Kihan:Kk | 常温拡散・浸透メッキ方法 |
WO1998014638A1 (en) * | 1996-10-01 | 1998-04-09 | Vms Holding Ag | Method and apparatus for applying a layer of protecting metal by means of blasting |
Non-Patent Citations (7)
Title |
---|
CHEMICAL ABSTRACTS, vol. 100, no. 22, 28 May 1984, Columbus, Ohio, US; abstract no. 178675v, CHRISTENSEN BENT BENDER: "method and composition for cleaning metal surfaces and protecting them from corrosion" page 233; XP002108771 * |
K LOWREY: "blast cleaning with zinc-coated abrasives", CHEMICAL ABSTRACTS + INDEXES, vol. 26, no. 101, 24 December 1984 (1984-12-24), pages 197, XP002108480 * |
PATENT ABSTRACTS OF JAPAN vol. 006, no. 197 (C - 128) 6 October 1982 (1982-10-06) * |
PATENT ABSTRACTS OF JAPAN vol. 006, no. 239 (C - 137) 26 November 1982 (1982-11-26) * |
PATENT ABSTRACTS OF JAPAN vol. 008, no. 279 (C - 257) 20 December 1984 (1984-12-20) * |
PATENT ABSTRACTS OF JAPAN vol. 010, no. 148 (C - 350) 29 May 1986 (1986-05-29) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 004 30 April 1997 (1997-04-30) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6911249B2 (en) * | 1991-06-17 | 2005-06-28 | Medsource Technologies Pittsburgh, Inc. | Surface for use on implantable device |
US11510786B2 (en) | 2014-06-17 | 2022-11-29 | Titan Spine, Inc. | Corpectomy implants with roughened bioactive lateral surfaces |
US11370025B2 (en) | 2015-11-20 | 2022-06-28 | Titan Spine, Inc. | Processes for additively manufacturing orthopedic implants followed by eroding |
US10821000B2 (en) | 2016-08-03 | 2020-11-03 | Titan Spine, Inc. | Titanium implant surfaces free from alpha case and with enhanced osteoinduction |
US11690723B2 (en) | 2016-08-03 | 2023-07-04 | Titan Spine, Inc. | Implant surfaces that enhance osteoinduction |
US11712339B2 (en) | 2016-08-03 | 2023-08-01 | Titan Spine, Inc. | Titanium implant surfaces free from alpha case and with enhanced osteoinduction |
Also Published As
Publication number | Publication date |
---|---|
DE59902392D1 (de) | 2002-09-26 |
ES2182406T3 (es) | 2003-03-01 |
ATE222612T1 (de) | 2002-09-15 |
EP0947605B1 (de) | 2002-08-21 |
DE19814218A1 (de) | 1999-10-14 |
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