EP3370916A1 - Procédé et dispositif de production d'une surface homogène rectifiée d'une bande métallique - Google Patents

Procédé et dispositif de production d'une surface homogène rectifiée d'une bande métallique

Info

Publication number
EP3370916A1
EP3370916A1 EP16793801.8A EP16793801A EP3370916A1 EP 3370916 A1 EP3370916 A1 EP 3370916A1 EP 16793801 A EP16793801 A EP 16793801A EP 3370916 A1 EP3370916 A1 EP 3370916A1
Authority
EP
European Patent Office
Prior art keywords
grinding
metal strip
ground
medium
abrasive
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
Application number
EP16793801.8A
Other languages
German (de)
English (en)
Other versions
EP3370916B1 (fr
Inventor
Herbert BLOCHBERGER
Roland Schuster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Berndorf Band GmbH
Original Assignee
Berndorf Band GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Berndorf Band GmbH filed Critical Berndorf Band GmbH
Priority to SI201630962T priority Critical patent/SI3370916T1/sl
Publication of EP3370916A1 publication Critical patent/EP3370916A1/fr
Application granted granted Critical
Publication of EP3370916B1 publication Critical patent/EP3370916B1/fr
Priority to HRP20201814TT priority patent/HRP20201814T1/hr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • 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
    • B24B21/04—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces
    • B24B21/12—Machines or devices using grinding or polishing belts; Accessories therefor for grinding plane surfaces involving a contact wheel or roller pressing the belt against the work
    • 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
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • 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
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/005—Portal grinding machines
    • 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
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/12—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work
    • B24B7/13—Single-purpose machines or devices for grinding travelling elongated stock, e.g. strip-shaped work grinding while stock moves from coil to coil

Definitions

  • the invention relates to a method for the production of a metal strip, in which the metal strip is ground in several passes at least on one side on substantially the entire surface.
  • the invention relates to a device for the manufacture of a metal strip comprising two rollers or two reels for holding and moving the metal strip, and a grinding device for grinding the metal strip in multiple passes at least on one side and on substantially the entire surface.
  • metal strips of the prior art are known. Such metal strips are produced for certain applications with a very high surface quality and are usually polished or even polished.
  • the metal strips are used, for example, for the production of plate-like or film-like materials, in particular for films for photography, LCD screens or for engineered stone, in which a liquid or pasty material is applied to a driven / moving belt and The surface quality of the product produced with such a metal strip depends directly on the surface quality of the metal strip.
  • An object of the invention is therefore to improve the grinding of a metal strip, or to produce an improved metal strip.
  • the metal strip should be ground so that a homogeneous strip surface is formed in order to meet the above requirements.
  • This object is achieved by a method of the type mentioned above, in which the metal strip is ground in a final grinding pass (at least on one side on substantially the entire surface) with an aged or worn abrasive medium.
  • the final grinding pass is started with an aged or worn abrasive medium, or the final grinding pass is carried out entirely with an aged or worn abrasive medium.
  • the object of the invention is also achieved with a metal strip, which is produced by a method of the type mentioned above.
  • the object of the invention is also achieved with a device of the type mentioned above, additionally comprising means for determining an age respectively a wear of a grinding medium and to issue an alarm when an abrasive medium in a final grinding pass does not correspond to a predetermined age or a predetermined wear ,
  • the proposed measures a particularly flat and high quality surface of the metal strip is achieved.
  • for a high-quality grinding result in the prior art mostly recourse to new and unused grinding media as far as possible.
  • this procedure leads only to relatively small surfaces to be ground to success or to a homogeneous microsection.
  • the wear of the abrasive particles which is particularly large in a new abrasive medium, comes into play. Tips and sharp edges on the abrasive grains are rounded relatively quickly, but the rounded edges remain for a comparatively long time. With the same grain size, a much more homogeneous and smoother grinding pattern can be achieved with a used abrasive medium than with a new abrasive medium.
  • the purpose of the grinding may be, for example, to grind the metal strip to a certain thickness and / or to ensure a certain thickness uniformity and / or to produce a specific surface finish. For example, a tolerance band for the thickness of the metal strip
  • the thickness of the metal strip should therefore be within each tolerance band at each point.
  • the surface texture can be defined, for example, by the surface roughness and / or the degree of gloss.
  • the surface roughness is usually given in ⁇ , where the indication can mean the average roughness, square roughness or average roughness. It should be noted at this point that the invention relates not only to bonded abrasive media but also to loose abrasive particles. In particular, the invention therefore also relates to abrasive pastes in which abrasive particles are present, for example, in aqueous or oily solution.
  • substantially the entire surface in the context of the invention means in particular a proportion of at least 90% of the entire strip surface of a strip side. Smaller areas may be excluded from processing, such as the area around a weld to connect the tape ends to an endless belt.
  • the method is not limited to the grinding of a band side, but it can also be sanded both sides of the band.
  • the metal strip is ground in a final grinding pass up to a maximum wear of the grinding medium. In this way it is ensured that the abrasive medium still has a sufficiently high removal rate or a sufficiently long residual service life.
  • the wear of the grinding medium can be determined in various ways. For example, the wear can be determined based on the duration of use of the grinding medium. It is also conceivable that the wear is determined by the number of grinding cycles, that is, how often an abrasive grain is in engagement with the metal strip. Another influencing factor is the cycle engagement time, that is, the period during which an abrasive grain engages the metal strip in one cycle.
  • a very similar influencing factor is the cycle engagement path, that is, the path length that an abrasive grain engages the metal strip in one cycle.
  • the contact pressure of the grinding medium on the metal strip has an influence on the wear of the grinding medium.
  • the wear can be determined by the following formulas:
  • the final grinding pass is carried out with a single grinding medium.
  • the processing time is kept short, and there are also steps in the strip surface after a change of the grinding medium prevented.
  • the final grinding pass is carried out with a plurality of aged or already used grinding media. In this way, the influence of the degradation of the grinding media can be further reduced. This procedure is particularly suitable for grinding particularly large metal bands.
  • the metal strip is cross-grinded and longitudinally ground. Due to the "cross-cut", the strip surface is particularly flat
  • a single grinding device for transverse grinding of the metal strip transversely to its longitudinal direction and for longitudinally grinding the metal strip in the longitudinal direction thereof, wherein the single grinding device is rotatably mounted about an axis oriented transversely to the plane of the metal strip.
  • a feed in the longitudinal direction for example, an oscillating movement can be superimposed in the transverse direction, or the movement is gradual, that is, a feed in the longitudinal direction takes place only when completed movement in the transverse direction.
  • the transverse grinding and longitudinal grinding take place simultaneously at locations offset in the longitudinal direction of the metal strip.
  • a longitudinal grinding device is arranged in the feed direction behind a transverse grinding device.
  • the metal strip can be made very fast.
  • the transverse grinding and longitudinal grinding takes place one behind the other.
  • the transverse grinding and the longitudinal grinding are decoupled from each other, which can be very specific influence on the grinding result.
  • the device for the production of a metal strip has a grinding wheel or grinding roller, or if the metal strip is ground with a grinding wheel or grinding roller. It is also beneficial if the device for the production of a metal strip has a grinding belt, or if the metal strip is ground with a grinding belt.
  • the abovementioned grinding media are particularly suitable for the stated purpose because they have a long service life and thus enable efficient and dimensionally stable grinding.
  • the abrasive medium touches the metal strip on a surface or if the contact between the metal strip and the abrasive medium takes place during grinding on a surface.
  • the surface of the strip can be leveled particularly well in a homogenized, more respectful manner.
  • sanding belts which lie flat on the metal strip are suitable for this purpose.
  • the metal strip is ground over the entire bandwidth.
  • a particularly flat surface of the metal strip can be produced.
  • the longitudinal grinding takes place over the entire bandwidth.
  • the metal strip is ground in a reduced area compared to the entire bandwidth. This allows the grinding process done very differentiated. By way of example, comparatively high removal can take place in a width region of the metal strip, whereas in a different width region of the metal strip a rather slight removal takes place.
  • the grinding process takes place on the endless, closed metal strip.
  • the grinding operations can be performed well in several passes.
  • the transverse grinding can be carried out in several passes or also the longitudinal grinding.
  • the grinding process can take place even in the case of long belts in a narrow space, for example in which the band to be ground is unwound from one reel and the ground band is reeled onto another reel.
  • the sanding belt can also be laid without the use of reels.
  • metal strip is ground dry. In this way, the resulting sanding dust can be sucked out well.
  • the metal strip is ground wet or with the aid of a lubricant. In this way, the formation of grinding dust is prevented.
  • the grinding medium is kept largely free of deposits, and the processing point is cooled.
  • wet grinding for example, petroleum, oil or water can be used as a lubricant.
  • the removal rate for wet grinding is usually higher than for dry grinding.
  • FIG. 1 shows a first arrangement for the production of a metal strip with a grinding roller for transverse grinding in side view.
  • Fig. 2 shows the arrangement of Figure 1 in plan view.
  • FIG. 3 shows a second arrangement for the production of a metal strip with a belt grinding device for longitudinal grinding in side view
  • Fig. 5 shows schematically the relationship between the roughness of the grinding medium and its wear
  • 6 shows a further arrangement for the production of a metal strip with a grinding roller for transverse grinding and a belt grinding device for longitudinal grinding in side view;
  • Figure 7 shows the arrangement of Figure 6 in plan view.
  • FIG. 8 shows an arrangement with a single rotatably mounted belt grinding device in FIG.
  • Fig. 10 shows an arrangement for the production of a metal strip with a grinding wheel for
  • FIG. 11 shows the arrangement of Figure 10 in plan view.
  • Fig. 12 shows an arrangement for grinding on the open metal belt with grinding wheel
  • FIG. 13 shows the arrangement of FIG. 12 in plan view
  • Fig. 14 shows an arrangement for grinding on the open metal band by means of a movable portal in side view
  • Fig. 15 shows the arrangement of Fig. 14 in plan view.
  • Fig. 1 shows an exemplary and purely schematically illustrated system for manufacturing a metal strip in a side view
  • Fig. 2 in plan view.
  • Figures 1 and 2 show a metal strip 1, which is designed as an endless belt and is guided around two rollers 2 and 3, of which at least one is driven.
  • a grinding roller 4 is shown.
  • the metal strip 1 can be ground transversely to its longitudinal extent.
  • the grinding roller 4 is used for this purpose, whose grinding direction (not the feed direction) is designated "B". This movement is effected by rotation of the grinding roller 4 about a horizontal, aligned along the metal strip 1 axis.
  • the metal strip 1 is moved by means of the rollers 2 and 3 in the direction "C" and thus causes a longitudinal feed during transverse grinding.
  • transverse feed also takes place in the direction D transverse to the longitudinal direction of the metal strip 1.
  • the welding area with the grinding roller 4 can be ground flat.
  • the feed in the longitudinal direction C for example, an oscillating movement in the transverse direction D is superimposed, such as triangular, sawtooth or sinusoidal course.
  • the movement in the direction D can also be done gradually.
  • a feed in the longitudinal direction C only takes place when the movement is completed in the transverse direction D. During the movement in direction D, the metal strip 1 is thus stopped.
  • the transverse grinding may be performed over the entire bandwidth or, for example, may be limited to an area reduced in relation to the entire bandwidth, which is denoted by "E" in FIG.
  • FIG. 3 shows a further exemplary and purely schematically illustrated system for manufacturing a metal strip 1 in side view
  • Fig. 4 in plan view.
  • the plant again comprises a metal strip 1, which is designed as an endless belt and is guided around two rollers 2 and 3, at least one of which is powered.
  • FIGS. 3 and 4 show a belt grinding device which comprises three deflection rollers 5, 6 and 7 as well as an abrasive belt 8.
  • FIG. 1 also shows a counterplate 9 for supporting the metal strip 1 (note: the sensor 10 and the electronic evaluation or alarming unit 11 will be explained in connection with FIG. 5).
  • counter-plate 9 could also be provided a support roller, or the grinding could in principle also be done without counter-plate 9 or support roller. The same applies to the system shown in FIGS. 1 and 2. Again, the grinding can be done with a back plate 9 or support role.
  • the metal strip 1 is ground in its longitudinal direction.
  • the belt grinder 6..8 is used for this purpose, whose grinding direction (not the feed direction) is denoted by "F".
  • the metal strip 1 is moved by means of the rollers 2 and 3 in the direction "C" and thus causes a longitudinal feed during longitudinal grinding.
  • the sanding roller 4 is used for the transverse grinding of the metal strip 1, and the sanding belt 8 for the longitudinal grinding.
  • the abovementioned grinding media are well suited for the stated purpose, because they have a long service life and thus an efficient and dimensionally stable grinding but this is not the only option.
  • the transverse grinding takes place with the grinding belt 8, or that the longitudinal grinding takes place with the grinding roller 4.
  • a grinding wheel instead of the grinding roller 4, a grinding wheel whose essential difference from the grinding roller 4 is the larger diameter / width ratio. Lower contact surface reduces the grinding pressure, which favors high removal rates.
  • FIG. 5 shows schematically the relationship between the roughness R of the grinding medium 4, 8 and the wear A of the grinding medium 4, 8.
  • the initial roughness R0 for a new grinding medium 4, 8 (FIG. Wear A0) is comparatively high and decreases rapidly. With increasing wear A, the roughness R then decreases less and less. That is, at the beginning, the abrasive particles of the grinding medium 4, 8 sharp points and edges, which are rounded relatively quickly. Although these rounded edges do not allow such a high removal rate, but have a relatively long life, or are subject to a relatively low degradation. This can be seen in FIG.
  • the wear of the grinding medium 4, 8 can be determined in various ways.
  • the wear A can be determined based on the duration of use of the grinding medium 4, 8. It is also conceivable that the wear A is determined on the basis of the number of grinding cycles, that is, how often an abrasive grain is in engagement with the metal band 1.
  • Another influencing factor is the cycle engagement time, that is, the period during which an abrasive grain in a cycle cycle is engaged with the metal strip 1.
  • a very similar influencing factor is the cycle engagement path, that is, the path length, which is an abrasive grain in a cycle cycle in engagement with the metal strip 1.
  • the contact pressure of the grinding medium 4, 8 on the metal strip 1 influence on the wear of the grinding medium.
  • the wear can be determined by the following formulas:
  • the metal strip 1 is ground in a final grinding pass with an abrasive medium 4, 8 which has a minimum wear. This avoids that the degradation of the grinding medium 4, 8 in the final grinding cycle is too strong.
  • the minimum wear can be defined by the value AI.
  • the metal strip 1 is ground in a final grinding pass also up to a maximum wear of the grinding medium 4, 8.
  • the maximum wear can be defined by the value A2.
  • the device shown in FIGS. 3 and 4 comprises exemplary means for determining an age or wear of the abrasive belt 8 and for issuing an alarm when the abrasive belt 8 does not meet a predetermined age or wear in a final grinding pass.
  • a sensor 10 and an electronic evaluation or alarm unit 11 are provided in the example shown.
  • the sensor 10 may be formed as a displacement sensor or rotary encoder or revolution.
  • the wear of the abrasive belt 8 can then be given, for example, as a product of the cycle engagement path and the number of cycles, the cycle engagement path substantially corresponding to the horizontal distance of the two rollers 5 and 6 and the number of cycles indicating how many times a particular location of the abrasive belt 8 passes through this cycle engagement path, respectively.
  • the number of cycles can be determined as follows over the number of revolutions of the roller 5
  • Number of cycles number of revolutions roll 5 x circumference roll 5 / length sanding belt 8
  • the engagement force and / or a factor for determining the wear of the abrasive belt 8 can be used.
  • the cycle engagement time ie, the time required for a particular location of the abrasive belt 8 to pass the cycle engagement path
  • the operating time of the abrasive belt 8 may be used to determine wear. If the abrasive belt 8 used for the final grinding cycle does not correspond to a specific specification, ie if the wear A does not lie in a range between Al and A2, for example, then the machine operator is notified. It is also conceivable that for alerting a lying between AI and A2, but close to AI, upper
  • Limit for determining the suitability of the abrasive belt 8 is used for the final grinding cycle to ensure a certain remaining service life of the abrasive belt 8.
  • the above considerations apply not only to the abrasive belt 8 but also to other types of abrasive media, such as grinding wheels and sanding rollers 4.
  • Grinding medium 4 takes place on a line, as shown in Figures 1 and 2.
  • grinding belts 8 can also be used for this, which contact the belt surface along a line (see also FIGS. 8 and 9). As a result of the line contact, the metal strip 1 can be removed in a particularly targeted manner at relatively low grinding pressure.
  • FIGS. 6 and 7 now show a further arrangement for grinding a metal strip 1 (FIG. 6 side view, FIG. 7 top view).
  • This includes both an abrasive roller 4 for transverse grinding of the metal strip 1 and a belt grinder 6..8 for longitudinal grinding of the metal strip 1.
  • the comments made to the figures 1 to 4 thus applies mutatis mutandis to the device shown in Figures 6 and 7.
  • the metal strip can thus be ground transversely and longitudinally. In the illustrated configuration, the transverse grinding takes place before the longitudinal grinding.
  • a further feature of the method illustrated with the aid of FIGS. 6 and 7 is that a wider abrasive medium 8 is used for longitudinal grinding than for transverse grinding.
  • a wider abrasive medium 8 is used for longitudinal grinding than for transverse grinding.
  • the transverse grinding and longitudinal grinding can take place at positions offset in the longitudinal direction of the metal strip 1 at the same time.
  • the sanding roller 4 and the sanding belt 8 are activated simultaneously. By this procedure, the metal strip 1 can be made very fast.
  • FIGS. 8 and 9 now show an embodiment variant which is basically very similar to the variant shown in FIGS. 6 and 7. In contrast to this, however, a single belt grinder 5.8 is now used for longitudinal grinding and transverse grinding.
  • Figures 8 and 9 show the device in the position for longitudinal grinding.
  • the belt grinding device 5..8 can be rotated through 90 ° about its vertical axis (see the double arrow in FIG. 9), whereby only a single grinding device 5..8 is required for transverse grinding and longitudinal grinding.
  • a single belt grinder 5..8 but also two separate belt grinder 5..8 may be provided which are rotated by 90 ° from each other.
  • the transverse feed can take place in an oscillating manner (for example triangular, sawtooth or sinusoidal) simultaneously with the longitudinal feed in the direction C or in temporal succession.
  • the abrasive belt 8 contacts the metal belt 1 both during transverse grinding and during longitudinal grinding along a line. It is also conceivable, however, that for the longitudinal grinding a contact between the grinding belt 8 and metal strip 1 is provided on a surface, as already shown in FIGS. 3 and 4. This can be accomplished by providing two separate belt grinders 5..8 which are rotated 90 ° about their vertical axis, with the belt grinder 5.8 provided for transverse grinding only rests with the roller 5 (line contact) and the intended for longitudinal grinding belt grinder 5..8 as shown in Fig. 3 and 4 is arranged (surface contact).
  • a single belt grinder 5.8 can be rotated not only by 90 ° about the vertical axis, but also about the axis of the roller 5 (here by 60 °), so that can be switched between line contact and surface contact.
  • sand belts 8 of different widths for longitudinal grinding and transverse grinding.
  • the longitudinal grinding does not take place over the entire bandwidth, but the transverse grinding takes place over the entire bandwidth (see also the region E).
  • the longitudinal feed in the direction C can also be superimposed on an oscillating movement in the direction D, even during longitudinal grinding, or this can also be carried out successively.
  • Figures 10 and 11 show a further variant, which is similar to the variants shown so far.
  • a grinding wheel 12 is used for the transverse grinding and a grinding roller 4 for the longitudinal grinding.
  • the transverse grinding and longitudinal grinding is also conceivable with a single 90 ° rotatable about its vertical axis grinding roller 4 (see Figure 8 and 9).
  • FIGS. 12 and 13 furthermore show a variant in which the grinding operation takes place on the open band 1.
  • the band 1 to be ground is unwound from a reel 13 and the ground band 1 is reeled onto another reel 14. In this way, the grinding process can take place even in long bands 1 in a narrow space.
  • all previously mentioned embodiments can also be applied to the grinding on the open belt 1.
  • a just laid (and not reeled) metal strip 1 can be ground in the specified manner.
  • FIGS. 14 and 15 show an example in which a belt grinder 6..8 is fastened to a gantry frame 15 which can be moved along the metal belt 1 with the aid of wheels 16 and rails 17. In this way, in particular (open) and just spread metal band 2 are processed.
  • the comments made for the preceding example apply mutatis mutandis to this device.
  • the portal structure is not mandatory, but the grinding of the metal strip 1 can also be performed by a Gelenkarmroboter (industrial robot) or by several such robots.
  • the portal frame 15 and / or articulated arm robot can also be used in connection with the processing of endless metal bands 1 respectively off / on reeled metal bands 1.
  • a relative movement between a grinding device and The metal band 1 can then be made in particular by moving the portal frame 15 / Gelenkarmroboters and / or by moving the metal strip 1.
  • the metal strip 1 can be ground in sections by the relative movement between metal band 1 and portal frame 15 during grinding exclusively by moving the portal frame 15 and then the metal strip 1 is moved on to the next grinding section.
  • FIG. 15 also explicitly shows a weld seam 18, with the aid of which several parts are connected to form a metal strip 1.
  • This can be ground longitudinally with the belt grinder 6..8.
  • a separate device for transverse grinding is provided on the portal frame 15 (compare, for example, FIGS. 6 and 7), provision may be made in particular for the metal strip 1 to be ground transversely in the seam region G of the weld seam 18 and thus along the weld seam 18. In this way, the weld 18 can be removed very targeted. Thereafter, a longitudinal grinding of the metal strip 1 take place.
  • a transverse grinding of the weld 18 with the belt grinding 6..8 takes place when this is designed to rotate as shown in Figs. 8 and 9.
  • similar considerations apply to a weld with which a metal band 1 is welded together to form an endless band.
  • the individual grinding operations can generally be carried out in several passes.
  • the transverse grinding can be carried out in several passes and also the subsequent longitudinal grinding.
  • the proposed method can equally be applied to longitudinal weld seams. This can also be ground first transversely and then longitudinally.
  • the final grinding pass is performed with a hard-bonded grinding medium 4, 8, 12.
  • the abrasive particles remain relatively long in the matrix in which they are embedded. Therefore, the rounded edges of the abrasive particles remain in effect for a long time before the abrasive particles break out and new abrasive particles with peaks and sharp edges are exposed.
  • the Bandoberfikiee 1 is particularly homogeneous with these grinding media. in principle but is also the use of soft grinding media 4, 8, 12 conceivable.
  • the hardness of grinding media 4, 8, 12 by the letters of D very soft until
  • T very hard.
  • the structure or structure of an abrasive medium 4, 8, 12 is determined by the distance of the
  • the grinding of the metal strip 1 can be done with open or narrow abrasive media.
  • abrasive particles are generally natural grain materials (quartz, corundum, emery, garnet, natural diamond) and synthetic grain materials (corundum, silicon carbides, chromium oxides, cubic boron nitride, diamonds) in question.
  • the processing time is kept short, and steps in the strip surface after a change of the grinding medium 4, 8, 12 are prevented.
  • the final grinding passage by means of the device shown in Figures 3 and 4 carried out such that a used sanding belt 8 is inserted into the belt grinder 5..7 or is already there and the metal strip 1 is once moved around, that is a circulation is performed. The sanding belt 8 is not changed.
  • the final grinding pass is carried out with a plurality of aged or already used grinding media 4, 8, 12.
  • This procedure is particularly suitable for grinding particularly large metal bands 1.
  • the final grinding passage with the aid of the device shown in Figures 3 and 4 done so that a used sanding belt 8 is inserted into the belt grinder 5..7 or already there and a part of the metal strip 1 is ground.
  • another used abrasive belt 8 is inserted, and it is another part of the metal strip 1 ground.
  • This process is repeated until the entire strip surface has been finally ground.
  • the abrasive belts used have the same or approximately the same wear A.
  • a final grinding cycle can also be performed with a grinding roller 4 or a grinding wheel 12.
  • the comments on the sanding belt 8 is mutatis mutandis applicable to the sanding roller 4 or a grinding wheel 12.
  • the metal strip 1 can be ground dry or wet. When dry grinding, the resulting sanding dust can be sucked off well, while wet grinding prevents the formation of sanding dust at all.
  • the grinding medium 4, 8, 12 is kept largely free of deposits, and the processing point is cooled.
  • wet grinding for example, petroleum, oil or water can be used as a lubricant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

L'invention concerne un procédé de production d'une bande métallique (1) selon lequel la bande métallique (1) est rectifiée en plusieurs passes au moins sur une face sur sensiblement la totalité de la surface. Lors d'une dernière passe de rectification, la bande métallique (1) est rectifiée avec un fluide de rectification (4, 8, 12) vieilli ou usagé. L'invention concerne par ailleurs un dispositif de production d'une bande métallique (1) qui comprend deux rouleaux (2, 3) ou deux dévidoirs (13, 14) servant à maintenir et à déplacer la bande métallique (1), ainsi qu'un dispositif de rectification (4, 8, 12). Le dispositif comprend en outre des moyens permettant de déterminer un âge ou une usure (A) d'un fluide de rectification (4, 8, 12) et d'émettre une alarme si dans une dernière passe de rectification, un fluide de rectification (4, 8, 12) ne correspond pas à un âge prédéfini ou à une usure (A) prédéfinie.
EP16793801.8A 2015-11-03 2016-11-02 Procédé et dispositif de production d'une surface homogène rectifiée d'une bande métallique Active EP3370916B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201630962T SI3370916T1 (sl) 2015-11-03 2016-11-02 Postopek in naprava za izdelavo homogene, brušene površine kovinskega traka
HRP20201814TT HRP20201814T1 (hr) 2015-11-03 2020-11-13 Postupak i uređaj za proizvodnju homogene, brušene površine metalne trake

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50928/2015A AT517879B1 (de) 2015-11-03 2015-11-03 Verfahren und Vorrichtung zum Herstellen einer homogenen, geschliffenen Oberfläche eines Metallbands
PCT/EP2016/076427 WO2017076905A1 (fr) 2015-11-03 2016-11-02 Procédé et dispositif de production d'une surface homogène rectifiée d'une bande métallique

Publications (2)

Publication Number Publication Date
EP3370916A1 true EP3370916A1 (fr) 2018-09-12
EP3370916B1 EP3370916B1 (fr) 2020-08-19

Family

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Application Number Title Priority Date Filing Date
EP16793801.8A Active EP3370916B1 (fr) 2015-11-03 2016-11-02 Procédé et dispositif de production d'une surface homogène rectifiée d'une bande métallique

Country Status (7)

Country Link
EP (1) EP3370916B1 (fr)
CN (1) CN108349057B (fr)
AT (1) AT517879B1 (fr)
HR (1) HRP20201814T1 (fr)
HU (1) HUE052535T2 (fr)
SI (1) SI3370916T1 (fr)
WO (1) WO2017076905A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017208498A1 (de) * 2017-05-19 2018-12-06 Homag Bohrsysteme Gmbh Verfahren zur Bestimmung eines Zustands eines Schleifmittels und Schleifvorrichtung
AT524459B1 (de) * 2020-11-27 2023-01-15 Berndorf Band Gmbh Metallbandfertigung durch Schleifen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244536A (en) * 1937-10-30 1941-06-03 Minnesota Mining & Mfg Apparatus for and method of surfacing metals, etc.
CN1138612C (zh) * 1998-06-25 2004-02-18 尤诺瓦英国有限公司 抛光晶片边缘的方法和设备
EP2938444B1 (fr) * 2012-12-27 2017-04-26 Berndorf Band GmbH Dispositif de nettoyage pour une bande sans fin en metal ainsi qu'une installation de coulée de bandes avec cette unite de nettoyage
WO2014134639A1 (fr) * 2013-03-07 2014-09-12 Berndorf Band Gmbh Bande sans fin à corps en métal et procédé de contrôle de la taille des pores dans la surface de la bande côté extérieur
CN105073339B (zh) * 2013-04-10 2017-07-14 百德福钢带有限公司 用于打磨金属带的装置和方法
CN103692324B (zh) * 2013-12-18 2016-04-13 湖南湘投金天钛金属有限公司 金属带表面打磨设备及利用该设备打磨的方法

Also Published As

Publication number Publication date
AT517879B1 (de) 2018-02-15
WO2017076905A1 (fr) 2017-05-11
SI3370916T1 (sl) 2020-12-31
CN108349057A (zh) 2018-07-31
CN108349057B (zh) 2021-03-12
AT517879A1 (de) 2017-05-15
HRP20201814T1 (hr) 2021-01-08
HUE052535T2 (hu) 2021-05-28
EP3370916B1 (fr) 2020-08-19

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