EP1377411A1 - Support bodies and method for improving wear and tear on support bodies in large-scale grinders - Google Patents
Support bodies and method for improving wear and tear on support bodies in large-scale grindersInfo
- Publication number
- EP1377411A1 EP1377411A1 EP02708125A EP02708125A EP1377411A1 EP 1377411 A1 EP1377411 A1 EP 1377411A1 EP 02708125 A EP02708125 A EP 02708125A EP 02708125 A EP02708125 A EP 02708125A EP 1377411 A1 EP1377411 A1 EP 1377411A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- main layer
- layer
- grinding
- resistant
- spraying process
- 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
Links
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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- 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
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
Definitions
- the invention relates to a method for improving the wear situation of support bodies in wide grinding machines, in particular at least for the driven rollers of the feed unit and / or the grinding belt contact rollers and / or the counter pressure shoe and / or the counter pressure roller.
- the invention further relates to support bodies for plates or sanding belts in wide grinding machines, which are designed either as driven rollers of the feed unit and / or as sanding belt contact rollers and / or as counter pressure shoes and / or the counter pressure roller.
- Wide grinding machines have established themselves as their own type of grinding machine for several decades. They are grinders of considerable size. The height is 1.5 to 3 meters, and the length can range from one meter to many meters depending on the grinding heads. The width of the machine, which can range from 1 to over 3 meters, is typical. As a rule, a wide grinding machine is adapted to the specific circumstances, especially the width of the workpieces to be ground. Workpiece after workpiece is continuously fed through the machine. In technical terms, therefore, larger systems speak of a grinding line, which includes inbound and outbound transportation. A typical application is the grinding of raw chipboard. The majority of the lower and upper surfaces are ground simultaneously over the entire width.
- Raw chipboard has an excess thickness of 0.5 mm and more immediately after pressing and should be brought to a nominal size with a thickness tolerance of ⁇ 1 ⁇ - 3/100 mm after the grinding process.
- the thickness tolerance must be maintained evenly over the entire area.
- a very high surface quality is required for the finished workpiece.
- the calibration grinding as the first grinding stage requires powerful motors for the removal of quite a large amount of material. The same applies to the forced promotion of slabs to be ground. Here too there are quite large thrusts.
- the correspondingly enormous grinding work also requires the highest accuracy and stability of the machine, especially the machine stand, for plate sizes of several m 2 .
- a wide variety of abrasives are used in wide grinding machines.
- the sanding belts and sanding rollers are wear parts that have to be replaced or reworked after a relatively short period of work. It is, as it were, unchangeable wear and tear of the work intervention means, which are tougher and harder than the workpiece to be machined, but wear out.
- a second category is the carrier or support body, be it for the sanding belts or the workpieces to be machined, for example chipboard.
- These are supporting bodies that move themselves or have their own drive or stand still and serve to press the grinding belt sliding past it onto the workpiece to be machined.
- the rollers for the feed unit have the task of precisely guiding the workpieces through the wide grinding machine and, in the case of the driven roller, of imparting the necessary pushing force to the workpieces.
- the throughput speed should be as constant as possible regardless of the grinding work currently required.
- the driven rollers for the feed unit have a profiled surface. So-called cords are most commonly used to create surface profiling.
- the protruding knobs are formed by crosswise, diagonally milled grooves about 2 to 3 mm deep. The knobs have a good grip on the workpiece to be moved so that the necessary forces can be transmitted. The slip between the knobs of the rollers and the workpiece results in abrasion on the roller surface.
- the roller In order to maintain the grip, the roller would have to be restored from time to time by cords. Because about 1 - 3 mm would have to be removed, a roller of smaller size would result after the re-cording Diameter, so that the processed roller could no longer be installed in a row with other rollers. In actual use, the reworked rolls could no longer be reused.
- the sanding belt contact roller has other conditions.
- the sanding belt is driven by a sanding belt contact roller.
- a certain slip is inevitable because of the enormous forces that have to be transmitted.
- the situation is more difficult in two ways compared to the driven roller of the feed unit.
- the nubbed feed roller attacks the raw, uncut workpiece, so that impressions in the workpiece are permissible to a certain extent.
- the sanding belt contact roller must be smooth so that the high requirements for surface sanding on the workpiece can be achieved via the sanding belt. In order to be able to transfer the driving forces to the sanding belt at all, an attempt was made to temper the surface, so that despite the smooth roller there is improved adhesion and abrasion resistance.
- the second method is vacuum plasma spraying.
- An essential component of a vacuum plasma spraying system is the approximately 2 to 3 m 3 large vacuum chamber, which is evacuated before the start of the process. Due to the high particle speed and the good melting conditions, a layer porosity below 1% can be achieved.
- an additionally transmitted arc can be ignited between the anode of the torch and the workpiece. The following functions are assigned to this transmitted arc: preheating the workpiece, cleaning the surface to be coated, supplying additional energy for melting the particles and keeping the substrate temperature constant during the spraying process in order to optimize the layer structure.
- materials with a high affinity for oxygen such as Ti, Tic or Ta
- the third support body which is known for an almost extremely heavy wear situation, is the sanding belt shoe and the counter pressure shoe.
- the back pressure shoe is required to have a high level of lubricity directly to the plate material.
- a plate-shaped intermediate layer which is enriched with graphite, is arranged between the sanding belt shoe and the sanding belt.
- the graphite layer of the sanding belt shoe can be replaced after wear.
- the support bodies described are not classic wearing parts, since the wear is relatively low. Nevertheless, from time to time either a complete replacement of the counter pressure shoe and in the case of the sanding belt contact roller a relatively complex regrinding is necessary.
- the object of the invention was now to develop a method and a device in order to improve the wear situation with regard to maintaining the value and the service life of the support bodies and to optimize the maintenance situation of the entire machine.
- the method according to the invention is characterized in that the support body has a base body on which an abrasion-resistant main layer of at least 0.3 mm thickness is applied in the thermal spraying method, the main layer being designed as an inhomogeneous layer with oxide inclusions.
- the main layer preferably has a certain porosity.
- the support body according to the invention is characterized in that it has a base body and an outer, abrasion-resistant main layer of at least 0.3 mm thickness applied in the thermal spraying process, the structure of the main layer having oxide inclusion and being inhomogeneous.
- the main layer preferably has a certain porosity.
- metal oxides are used as oxide inclusions.
- the new state and thus the original dimensional accuracy can be restored with relatively little effort by renewed thermal application.
- the thermal application can take place within a few tenths of a millimeter, depending on the special requirements.
- the support body is as good as new after being worked up by the thermal arc spraying process.
- the invention allows a number of particularly advantageous configurations, for which reference is made to claims 2 to 8 and 10 to 13.
- the surface is roughened beforehand prior to the thermal application by means of sandblasting.
- the base body no longer has to be a metal body, as was the case until now.
- the base body can consist entirely or partially of plastic, in each case a specially adapted adhesive layer being applied before the main layer is applied, likewise in the thermal arc spraying process.
- Non-metals can directly influence the vibration or oscillation behavior in a positive sense in order to avoid surface oxidation.
- the arc spraying process uses wire additives that are electrically conductive in wire form. If the base body is an oxidizable metal body, the thermal layer application should be carried out within a limited time, in particular less than three hours after surface roughening.
- the thermal spray process has the enormous advantage that almost any layer thickness can be produced by transferring the metal particles.
- this process accompanied by an air stream, there is a partial oxidation of the oxide-forming elements or metals.
- the application is very rough on the outer surface after its completion and, particularly on the surface, has oxide particles of different sizes. These primarily result in the wear-resistant and hard surface properties. If the hard main layer is slowly removed by the abrasion, then new oxide particles are continuously effective on the surface, so that regardless of the abrasion, a rough, non-slip and wear-resistant surface texture is almost unchanged.
- the cabling in the case of the rollers for the feed unit according to the prior art is relatively cumbersome and requires a relatively long manufacturing process.
- the arc spraying process is quick, simple and offers a wear quality that is significantly higher than that of a structural steel.
- the hardening of structural steel would make it extremely difficult to rework it later.
- thermally apply an adhesive layer in particular made of aluminum bronze or zinc substrate, prior to the application of the main layer in the arc spraying process.
- the adhesive base can have a thickness of approximately 0.1 to 0.3 mm.
- the main layer is applied with a thickness of approximately 0.4-5 mm, preferably 0.5 to 2 mm, the layer thickness in the case of the sanding belt roller and / or the sanding belt shoe being at least 0.2-1 mm after surface grinding. Because the primer and main layer can be applied using the same process, the work process in question is greatly simplified. In the case of rollers for the feed unit of the roller bodies, these are roughened beforehand, and then an adhesive base and the main layer are thermally applied in the arc spraying process.
- the main layer of the roller for the feed unit consists of approximately half of chrome steel, in particular 13% chrome steel, and abrasion-resistant hard material, a rough, non-slip and wear-resistant surface being produced on the main layer.
- the base body is roughened and a) a primer and then b) the main layer are applied thermally in the arc spraying process.
- the main layer preferably consists of approximately 13% chrome steel. After the thermal application of the main layer, the surface is ground to produce a smooth surface.
- a sliding plate is attached to a solid support body, which is provided with a wear-resistant layer structure according to the invention.
- FIG. 1 shows a wide grinding machine for double-sided grinding with two coarse and two fine grinding stages with grinding belts; 2 shows a wide grinding arrangement with two calibration stages and two
- Fine grinding stages the fine grinding stages grinding rollers or
- Abrasive belt contact rollers shows a counter pressure shoe according to a new solution
- 5 schematically shows a complete structure of the wide grinding machine
- FIG. 6 diagrammatically the different process steps for the treatment of the grinding roller according to the new solution
- FIG. 7 one above the other three different sectional images of thermal in
- FIG. 8 shows three sectional images with ground and unground main layer and the relationships of the respective material hardness.
- FIGS 1 and 3 show a larger wide grinding machine 1 in side view for double-sided grinding, e.g. of rough chipboard 3.
- the coarse or calibration grinding has been designated as process section 2, two coarse grinding heads 4 and 5 or 4 'and 5' being provided at the top and bottom, which are equipped with grinding belts 6 and 7 or 6 'and 7' are equipped.
- the coarse sanding head 4 the sanding belt 6 (6 ') loops around an upper sanding belt contact roller 8 (8') and a lower driven sanding belt contact roller 9 (9 ') in each case by approximately 180 °.
- the looping of the sanding belts 7, 7' is only about 90 °.
- Each of the grinding heads 4, 5 each has a strong cross member 10, 10 ', via which the grinding belt contact rollers are supported on the machine stand 1 1, 1 1'.
- Each of the abrasive belt contact rollers 9, 9 ' has a base body 18 and, according to FIGS. 1 and 3, is supported on both sides by means of a stub shaft 12 in a pillow block 13 and is driven by a respective drive motor 15, respectively, via a corresponding overdrive 14. 16 driven. In the usual sizes, this can be a 50 to 1 50 HP engine.
- the grinding belt contact rollers 9, 9 ' are supported downwards or upwards on the machine stand 11 or 11'.
- the upper machine stand 1 1 rests on the lower machine stand 1 1 'via height-adjustable support columns 17, which can be designed as hydraulic cylinders with pistons 17'.
- the height-adjustable support columns 17 serve primarily to adjust the gap width between the two grinding belt contact rollers 9, 9 '.
- the wide grinding machine also has a first guide and feed unit 20 on the plate feed side and a second guide and feed unit 21 on the plate discharge side.
- Both guide and feed units 20 respectively. 21 consist of two pairs of guide rollers 22, wherein at least one roller of each guide and feed unit can be designed as a driven feed roller 23.
- the guide and feed units 20 respectively. 21 consist of an upper guide roller set 24 and. a lower guide roller set 25, the corresponding guide rollers 22 and the corresponding feed rollers ⁇ 23 result in stable longitudinal and transverse guidance.
- the height of the guide roller sets 24 and 25 must be precisely adjusted so that the plate guides run exactly plane-parallel in accordance with the middle grinding plane 26 and are in an optimal position with respect to the two sliding contact rollers.
- each guide roller set 24 or 25 precisely adjusted via setting elements 27.
- the feed section for the raw chipboard is designated by 29 in accordance with FIG. 1 and comprises the feed unit 20 and 28.
- the feed roller which is filled in black, is marked with a feed roller, which according to the new solution can have an abrasion-resistant and rough main layer f applied by thermal spraying. It is important that the rough engagement of the feed rollers up to the second rough grinding may well leave traces of engagement, since these are eliminated with the rough grinding.
- the requirements for the guide units 22, 30 and 31, which can be designed as rubberized rollers, are completely different.
- the section with the reference numeral 40 denotes the process section for fine grinding. In Figure 1, this fine grinding body 41 and 42 or 41 ', 42' each have a grinding shoe step 43 or. 43 'on.
- the fine grinding stage has two fine grinding rollers 44 or brushes 45.
- FIG. 4 shows a counter pressure shoe 50 with a support body 54 with a slide plate 51 attached to it, which is held on the counter pressure shoe by means of clamping means, not shown.
- the sliding plate 51 has an abrasion-resistant and ground main layer 52 applied by thermal spraying (thick black line).
- the main layer can also be applied, for example, over the contours, which is taken up with a graphite layer of the prior art. Because the risk of damage to the main layer, especially from the incoming Workpiece, which is much smaller, a flat application of the main layer with an inlet slope 53 and a minimal rounding off may also suffice under certain circumstances.
- FIG. 5 shows schematically advantageous control, control and regulating means for the entire grinding process step according to WO00 / 35628.
- a calibration grinding head 4, 5 and a fine grinding head 41, 42 are shown.
- a workpiece 3 is shown as a flat plate 3 ground on one side from above.
- the plate 3 has a raw thickness Dr before the grinding engagement, a thickness DK after the first or calibration grinding and a thickness DF after the fine grinding.
- the difference in thickness between Dr and DK is e.g. 0.4 mm, which corresponds to a grinding decrease of 0.4 mm.
- the grinding decrease in fine sanding is in the range of a few hundredths of a millimeter.
- a thickness measuring device or a thickness monitoring device Ds is drawn as the grinding intervention monitoring device.
- the plate thickness DK is determined using two sensing rollers and the corresponding signal is forwarded via a data bus.
- the calibration grinding head 4 and the fine grinding head are stored in the stand of the wide grinding machine ST, symbolized by a thick line.
- HP represents a height position signaling device by means of which the desired grinding acceptance can be determined.
- the workpiece or plate 3 is guided several times so that the desired grinding accuracy can be achieved at all.
- Corresponding single or double guide rollers and drive rollers, which are stored in the machine, ensure the precise and constant conveying of the workpieces through the grinding line.
- the running speed of the plate 3 is determined by speed sensors VPS. With the calibration grinding head 4, the grinding belt speed VKBS, the drive motor current AK and AF can be determined with the fine grinding head 41.
- the abrasives can be positioned vertically in several ways, as mentioned above over the entire machine frame or e.g. via eccentric setting means from each of the grinding heads or on the calibration grinding head Hks and on the fine grinding head FHs.
- the signals mentioned can be made available via the data bus bus to the control and management level, which consists of the three primary components of the machine control PLC, a recipe memory for order and recipe input, and a multi-size controller.
- FIG. 6 shows the grinding belt contact roller 9, 9 'with the various process steps from A - E.
- A represents the raw condition of the abrasive belt contact roller at the end of the roller production.
- the rollers are manufactured in larger series and brought to the desired dimensional accuracy, whereby the surface can change due to environmental influences. If, on the other hand, a protective layer is applied, it must first be completely removed using the thermal spray process.
- the base body 18 shows the preparation of the abrasive belt contact roller for thermal spraying.
- the light spots on the surface of the base body 18 symbolize the metallic, white appearance of a smooth metal surface after surface finishing.
- the cylindrical surface of the base body is roughened using sandblasting, which is illustrated by the dark color. Sand means sandblasting.
- the next step in the process is to apply an aluminum bronze 0.1 to 2 millimeters thick using the thermal spraying process or, for example, a zinc substrate adhesive layer.
- the thermal spraying process is known per se.
- the wire process is shown in simplified form in FIG.
- a spray head 60 has two mechanical wire feeds 61 and 62, each of which feeds a wire 63 or 64 continuously to an electrical ignition point 65. At the ignition point, the materials of the two wires are melted by the electrical heat of ignition. The two materials are applied to the base body as intimately mixed, atomized particles by means of a primary air jet 66 and a secondary air jet 67 as a spray jet 68, similar to dye spraying.
- the abrasive belt contact roller rotates in a controlled manner, as indicated by arrow 69.
- the axial movement, arrow 70 can either by appropriate movement in the direction of the axis of rotation 71 of the grinding belt contact roller 9, 9 'or by a controlled longitudinal movement of the spray head 60.
- the desired layer thickness can be selected, which in the case of the adhesive layer can be 0.1 to 0.2 millimeters.
- D shows the thermal application of the main layer.
- the process is basically identical to the application of the adhesive layer, so that reference is made to it.
- the materials of the wires 63 ', 64' and also the layer thicknesses will generally be different than in the case of the adhesive layer.
- a not unimportant aspect is that materials of different hardness are chosen for the adhesive layer and for the main layer (FIGS. 7 and 8).
- E shows the sanding belt contact roller ready for use.
- SF is symbolically the last stage of the process to create a finishing touch. With the desired finishing touch, the surface gets a metallic shine again and is therefore brightly colored.
- FIG. 7 shows an example of layer build-up of a layer of slightly more than 0.3 mm thick in cross section at different magnifications.
- the rough surface (upper edge) and the inhomogeneous porous structure are very clearly expressed in all three cuts.
- the dark and strong grayish parts represent larger or a 'small amount of oxide inclusions, which constitute the abrasion resistance. It can be seen that the surface roughness is of the order of about 0.1 mm.
- This roughness of 0.1 mm is in the thickness range of the entire order of the vacuum plasma spraying process of the prior art mentioned at the beginning.
- FIG. 8 shows on the left in the picture two different magnifications with a square black marking, which reflects the hardness of the layer in question.
- the statement is qualitative. The larger the square, the softer the material.
- the basic body consists of ST-52, for example, and has a medium-sized square.
- the thin adhesive layer consists of aluminum bronze and is soft with a significantly larger square.
- the main layer consists of 13% chrome steel and is much harder than the other two materials.
- the example according to FIG. 8 is a sliding contact roller 9, 9 ', which has to be finely ground after thermal spraying, which is indicated by the SF. It can be seen that approximately 0.1 to 0.2 mm of the main layer has to be removed.
- the material of the base body is provided with the reference numeral 75, the adhesive layer with 72, the main layer with 73 and the finished grinding surface with 74.
- the rough spots and stains are oxide particles.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH6782001 | 2001-04-11 | ||
CH6782001 | 2001-04-11 | ||
PCT/CH2002/000198 WO2002083362A1 (en) | 2001-04-11 | 2002-04-09 | Support bodies and method for improving wear and tear on support bodies in large-scale grinders |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1377411A1 true EP1377411A1 (en) | 2004-01-07 |
EP1377411B1 EP1377411B1 (en) | 2007-03-07 |
Family
ID=4528276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02708125A Expired - Lifetime EP1377411B1 (en) | 2001-04-11 | 2002-04-09 | Support bodies and method for improving wear and tear on support bodies in large-scale grinders |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040147207A1 (en) |
EP (1) | EP1377411B1 (en) |
CN (1) | CN1246122C (en) |
AT (1) | ATE355932T1 (en) |
DE (1) | DE50209658D1 (en) |
WO (1) | WO2002083362A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101822976B1 (en) * | 2010-05-18 | 2018-01-29 | 마포스 쏘시에타 페르 아지오니 | Method and apparatus for optically measuring by interferometry the thickness of an object |
CN101961925A (en) * | 2010-10-12 | 2011-02-02 | 健伦精密机械(中国)有限公司 | Improved 15-70 degree steel cord fabric cutting machine roller |
CN102179762B (en) * | 2011-04-06 | 2013-03-27 | 浙江金圣竹木有限公司 | Chopping board polishing machine |
TWI634016B (en) * | 2016-10-11 | 2018-09-01 | 雷立強光電科技股份有限公司 | Forming method of alignment layer |
CN107699842B (en) * | 2017-09-23 | 2019-08-13 | 广东省新材料研究所 | A kind of high-densit tungsten carbide coating roller manufacturing method of solvent-free composite machine |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3779745A (en) * | 1969-02-26 | 1973-12-18 | Aerojet General Co | Carbide alloys suitable for cutting tools and wear parts |
US3918137A (en) * | 1973-07-05 | 1975-11-11 | Ford Motor Co | Wear-resistant coating for rotary engine side housing and method of making |
JPS5332833A (en) * | 1976-09-08 | 1978-03-28 | Hitachi Cable | Zinccaluminum metallization wire material |
FR2539325A1 (en) * | 1983-01-17 | 1984-07-20 | Armotek Ind Inc | Powder feed device for applying wear-resistant coatings to objects |
FI70273C (en) * | 1985-01-09 | 1986-09-15 | Valmet Oy | SYNTHETIC PRESS RELEASES FOR THE FRAMEWORK OF THE FRAMEWORK |
DE8814128U1 (en) * | 1988-11-11 | 1989-03-09 | Reinhold Hess Gmbh & Co Kg Maschinenbau, 7460 Balingen, De | |
DE4320069A1 (en) * | 1993-06-17 | 1995-01-12 | Roland Man Druckmasch | Method and device for repairing cylinders of printing machines |
US5679167A (en) * | 1994-08-18 | 1997-10-21 | Sulzer Metco Ag | Plasma gun apparatus for forming dense, uniform coatings on large substrates |
US5744777A (en) * | 1994-12-09 | 1998-04-28 | Northwestern University | Small particle plasma spray apparatus, method and coated article |
EP0902099A1 (en) * | 1997-09-10 | 1999-03-17 | Eidgenössische Materialprüfungs- und Forschungsanstalt Empa Thun | Wear and corrosion resistant surfaces |
US6376091B1 (en) * | 2000-08-29 | 2002-04-23 | Amorphous Technologies International | Article including a composite of unstabilized zirconium oxide particles in a metallic matrix, and its preparation |
-
2002
- 2002-04-09 CN CNB028080300A patent/CN1246122C/en not_active Expired - Lifetime
- 2002-04-09 WO PCT/CH2002/000198 patent/WO2002083362A1/en active IP Right Grant
- 2002-04-09 DE DE50209658T patent/DE50209658D1/en not_active Expired - Lifetime
- 2002-04-09 AT AT02708125T patent/ATE355932T1/en active
- 2002-04-09 EP EP02708125A patent/EP1377411B1/en not_active Expired - Lifetime
- 2002-04-09 US US10/474,623 patent/US20040147207A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO02083362A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20040147207A1 (en) | 2004-07-29 |
ATE355932T1 (en) | 2007-03-15 |
EP1377411B1 (en) | 2007-03-07 |
WO2002083362A1 (en) | 2002-10-24 |
CN1509221A (en) | 2004-06-30 |
DE50209658D1 (en) | 2007-04-19 |
CN1246122C (en) | 2006-03-22 |
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