Method for coating and deep rolling movable disc

Abstract

The invention relates to a method for coating and deep rolling a movable disc (B), the invention relates to a method for coating a brake disc (B), comprising the following steps: b) providing a device (V5) for coating the brake disc (B), d) providing a device (V7) for deep rolling the coated brake disc (B), e) providing a device (1) for transporting the brake disc (B), i) coating a first side of the brake disc (B), j) coating a second side of the brake disc (B), and k) deep rolling both sides of the coated brake disc (B), the brake disc (B) is transported by a transport device (1) at least between a device (V5) for coating the brake disc (B) and a device (V7) for deep rolling of the coated brake disc (B). In order to solve the problem, steps i) and j) are carried out in sequence on the same device (V5) for coating the brake disc (B).

Description

Technical Field

[0001] The present invention relates to a method for coating and deep-rolling (Festwalzen) a brake disc, the method comprising the steps of: b) providing an apparatus for coating the brake disc, d) providing an apparatus for deep-rolling the coated brake disc, e) providing an apparatus for transporting the brake disc, i) coating a first side of the brake disc, j) coating a second side of the brake disc, and k) deep-rolling both sides of the coated brake disc, wherein the brake disc is transported by a transport device at least between the apparatus for coating the brake disc and the apparatus for deep-rolling the coated brake disc. Background Technology

[0002] Disc brakes are widely used in the field of vehicle technology. These disc brakes typically consist of a brake disc with an annular braking surface and a brake caliper with two brake pads that act on the braking surface of the brake disc from both sides to slow down rotational motion through friction.

[0003] The annular braking surface of the brake disc is subjected to very high thermal and mechanical loads, and therefore experiences very high wear. This high wear not only reduces the brake disc's service life but also increases losses, which are released into the surrounding environment in the form of fine particles ("fine dust" or "brake dust"), and thus must be reduced. Therefore, various attempts have been made to coat and treat the braking surface of the brake disc to improve its wear characteristics.

[0004] One possibility for processing the brake surface of a brake disc is to perform deep rolling, as deep rolling offers several advantages. During deep rolling, a suitable rolled material is guided or rolled on both sides of the brake surface to be processed under clamping force. Here, different effects occur on the surface or surface layer of the processed material, such as a smoother surface (small notches are flattened), and the material undergoes plastic deformation and is simultaneously strengthened. Smoothing the surface has the advantage that when the already very smooth surface of the brake disc is subsequently ground, only a small amount of material needs to be removed to achieve the desired low roughness. This allows for thinner coatings, thus saving on expensive coating materials; furthermore, it saves on abrasive material and reduces grinding time. Furthermore, deep rolling can eliminate undesirable internal stresses that may exist in the surface layer of the workpiece; a favorable stress state can also be established in the surface layer areas through deep rolling.

[0005] For example, early apparatuses for deep or smooth rolling of brake discs are described in DE 1 286 932 B and DE 2 217 546 A1. The apparatuses described there have two hinged lever arms, at the ends of which are supported two large support rolls and two smaller rolls driven by the support rolls. At the opposite ends of the lever arms, the lever arms are connected to hydraulic cylinders that can open and close the lever arms like scissors or pliers. The workpiece to be processed (e.g., a brake disc) can be clamped between the two rolls so that the two rolls can simultaneously roll the opposite braking surfaces of the brake disc.

[0006] The devices described in DE 1 286 932 B and DE 2 217 546 A1, dating from the 1960s and 1970s, are for uncoated brake discs. Unfortunately, the concept of deep rolling has not yet been satisfactorily applied to other brake discs, especially coated ones. The reasons are, for example, that the coating is subjected to very high mechanical loads during deep rolling, and may therefore partially detach from the brake disc's braking surface. This detachment not only reduces the surface quality of the braking surface but also leads to uneconomical and rapid wear of the rolls due to the highly abrasive properties of the detached coating. Furthermore, in uncoated brake discs, there is simply no need to conserve coating material (e.g., powder). Summary of the Invention

[0007] Therefore, the objective of this invention is to achieve more advantageous manufacturing and improved properties even in brake discs with coated brake surfaces through deep rolling.

[0008] This task is solved in the method of the preamble of claim 1 by performing steps h) and i) sequentially on the same apparatus for coating the brake disc.

[0009] This invention relates to a method for coating and deep rolling a brake disc. As an alternative to the brake disc, the method can also be used to coat and deep roll other disc-shaped, particularly rotationally symmetrical, components, such as clutch discs. The method first includes the step of providing an apparatus for coating the brake disc (step b). Here, for example, a laser unit can be used to apply a hard material coating to the brake disc, such as a hard material coating based on powder materials, such as titanium carbide (TiC) or tungsten carbide (WC). The coating can be, for example, an anti-corrosion layer and / or a wear-resistant layer. The method further includes the step of providing an apparatus for deep rolling the coated brake disc (step d). The rolling apparatus can be, for example, the rolling apparatus described at the beginning in conjunction with the prior art. Furthermore, the method includes the step of providing an apparatus for transporting the brake disc (step e). Using this transport apparatus, the brake disc should be transported at least between the apparatus for coating the brake disc and the apparatus for deep rolling the coated brake disc. Thus, automatic or at least semi-automatic transport of the brake disc is possible, in contrast to manual transport. The method further includes steps of coating a first side of the brake disc (step i) and coating a second side of the brake disc (step j). Specifically, the two opposing brake surfaces of the brake disc are coated. Preferably, the brake disc is rotated, for example, by about 180°, between coating the first side and coating the second side. Finally, the method includes a step of deep rolling the previously coated sides of the brake disc (step k). Again, specifically, the two opposing brake surfaces of the brake disc are deep rolled.

[0010] According to the present invention, steps i) and j) are performed sequentially on the same apparatus for coating brake discs, namely, coating the first side and coating the second side of the brake disc. Coating both sides of the brake disc on the same apparatus has several advantages. One advantage is that only a single (often very expensive) coating apparatus (e.g., a laser unit) is required. Another advantage is that by using the same apparatus, consistent and unchanging coating results can be ensured on both sides of the brake disc. Due to the use of a single coating apparatus, the coating results can also be optimized particularly easily for subsequent deep rolling. To enable coating of both sides of the brake disc on the same apparatus, it is preferable to feed the same brake disc to the coating apparatus twice, preferably with a flip between the two feeds. These two feeds can be achieved, for example, by linear back-and-forth movement of the brake disc, or by circular forward (clockwise) and backward (counterclockwise) movement, for example, within the framework of a (linear or circular) "Pilger stepping method". Performing multiple steps on the same apparatus also has the advantage that the cycle time can be optimized so that, for example, the coating apparatus is optimally utilized and can operate almost without interruption.

[0011] According to one design of the method, the method additionally includes the following steps: step a) providing means for applying a primer to the brake disc, and step c) providing means for deep rolling the primer-applied brake disc. These means may be of the type previously described, as they are used not only for the (main) coating but also for applying and deep rolling another coating, particularly a primer layer. According to this design, the method further includes a step of applying a primer to a first side of the brake disc (step f), a step of applying a primer to a second side of the brake disc (step g), and a step of deep rolling both sides of the primer-applied brake disc (step h). The brake disc is transported by a transport device at least between the means for applying the primer to the brake disc and the means for deep rolling the primer-applied brake disc. In this design of the method, steps f) and g) should be performed sequentially on the same means for applying the primer to the brake disc, i.e., applying the primer to the first side of the brake disc and applying the primer to the second side of the brake disc. By providing additional coating or primer application devices and additional deep rolling devices, brake discs with not only a single coating (“single-layer”) can be manufactured, but also brake discs with multiple different layers (“double-layer”), such as a brake disc with a primer layer and a (main) coating. Since devices for applying primer (e.g., laser units) are typically very expensive, applying primer to both sides of the brake disc on the same device is particularly cost-effective. Another advantage is that (as in coating) equally good coating results are achieved on both sides of the brake disc, which can be optimized particularly easily for subsequent deep rolling. To allow primer to be applied to both sides of the brake disc on the same device, (as in coating) it is preferable to feed the same brake disc to the primer application device twice, preferably flipping it between the two feeds. Here, the two feeds can also be achieved, for example, by linear back-and-forth movement of the brake disc, or by circular forward (clockwise) and backward (counterclockwise) movement, for example within the framework of a (linear or circular) “Pilger stepping method”.

[0012] According to another design of the method, in step h) and / or step k), deep rolling is performed simultaneously on both sides of the brake disc using a feed method, for which the rolls move in the radial direction of the brake disc. The feed method is understood as a method in which the rolling tool (rolls) moves radially relative to the rotating brake disc during deep rolling (similar to a stylus in a record player). This has the advantage that the rolls can also process brake discs where the braking surface is significantly wider in the radial direction than the rolls themselves. The rolls cannot be arbitrarily wide, as an increased contact area would lead to a decrease in the ("pressing") rolling pressure. The feed rate can, for example, be between 0.4 mm and 2.5 mm per revolution.

[0013] According to another design of this method, a rotatable circular platform is provided as a transport device, which allows the brake disc to move back and forth between multiple positions, particularly between multiple processing positions and / or through positions. Using the circular platform as a transport device allows the brake disc to be manufactured particularly compactly, as the equipment required for processing the brake disc can be arranged circularly and space-savingly around the platform. Another advantage of the circular platform is that its size can be matched to the number of required processing steps, so that one complete rotation of the platform corresponds to one complete cycle of the process. This has logistical advantages, namely, the loading and unloading of the brake disc can be performed at the same location on the platform, facilitating the transport of the brake disc. The compact arrangement also makes it easy to almost completely "enclose" the platform and the equipment arranged around it with an outer casing (e.g., for acoustic reasons, for radiation protection, or for dust extraction), since the platform only needs to perform loading and unloading of the brake disc in one location.

[0014] This design of the method is further configured such that the truncated disc has multiple, preferably eight, receptacles for accommodating the brake discs. These receptacles allow for the defined positioning of the brake discs. Preferably, these receptacles are replaceable to accommodate the geometry of different brake discs. Preferably, these receptacles have recesses in their outer regions, allowing access to the brake discs (e.g., via a rolling tool or a flipping device). Preferably, these receptacles are designed such that the brake discs are arranged within the receptacles at an angle of 5° to 25° relative to the horizontal plane (lower on the outer side, higher on the inner side). This particularly facilitates the application of primer and coating to the brake discs using a device arranged around the truncated disc.

[0015] Regarding further details of the circular stage, the stage has a lifting and / or rotating device at at least one receiving portion for raising and / or rotating the brake disc during machining. The lifting device allows the brake disc to be raised for machining, for example, when machining of the brake disc located in the receiving portion is not possible. The rotating device allows the brake disc to be rotated for machining when this facilitates machining, or when machining is necessary. The lifting device may be combined with the rotating device and, for example, arranged below the receiving portion of the circular stage.

[0016] The circular platform can be configured to occupy at least the following positions, particularly the following processing and / or passage positions: a first position where the brake disc can be inserted and removed; a second position where a primer can be applied to the brake disc; a third position where the brake disc can be flipped; a fourth position where the primer-coated brake disc can be deep-rolled; a fifth position where the brake disc can be coated; a sixth position where the brake disc can be flipped; a seventh position where the coated brake disc can be deep-rolled; and an eighth position where the brake disc can be cleaned. These positions are preferably arranged at uniform intervals along a circular trajectory extending around the central axis or rotation axis of the circular platform, sequentially in a clockwise direction. Of course, the number and order of positions can be matched according to the requirements of the process flow. Preferably, corresponding devices are provided at some or all of the positions, by which the steps to be performed at said positions can be executed.

[0017] According to one design of the method, the circular stage changes its rotation direction between applying primer to a first side of the brake disc and applying primer to a second side of the same brake disc, allowing the brake disc to be flipped between applying primer to the first side and applying primer to the second side, and enabling both sides of the brake disc to be primed in the same device. Changing the rotation direction of the circular stage allows for structurally simple and cost-effective feeding of the brake disc to the same device (here, the primer application device) twice, so that processing (here, primer application) can be performed from both sides. The advantages of applying primer to both sides in the same device have been previously described.

[0018] According to another design of the method, the circular stage changes its rotation direction between coating a first side of the brake disc and coating a second side of the same brake disc, allowing the brake disc to be flipped between coating the first and second sides, and enabling both sides of the brake disc to be coated in the same apparatus. Changing the rotation direction of the circular stage allows for structurally simple and cost-effective feeding of the brake disc to the same apparatus (here, the coating apparatus) twice, so that processing (here, coating) can be performed from both sides there. The advantages of coating both sides in the same apparatus have been previously described.

[0019] According to one design of the method, the circular stage moves according to the Pilger stepping method, specifically, moving two or more positions along a first rotational direction, and then moving one or more positions along a second rotational direction opposite to the first rotational direction. Since the circular stage not only rotates stepwise in the same direction (e.g., clockwise), but also rotates back one step (e.g., counterclockwise) after a predetermined number of steps (e.g., after two steps), the apparatus arranged around the circular stage can be used multiple times to process the same brake disc, meaning that expensive equipment can be utilized particularly efficiently.

[0020] According to one design of the method, the circular stage moves periodically, with different cycle times set, specifically a first cycle time of approximately 10 seconds and a second cycle time of approximately 60 seconds. The different cycle times can be matched to processing steps of varying durations. It has proven suitable to set at least one shorter cycle time (e.g., for loading, unloading, and flipping the brake disc) and at least one longer cycle time (e.g., for applying primer, coating, and deep rolling to the brake disc). Preferably, the short cycle time is followed by multiple (e.g., two) longer cycle times, because most processing steps are longer in duration, and only a few are shorter. Furthermore, the different cycle times allow for optimal or full utilization of a particular apparatus, such as a coating apparatus.

[0021] According to another design of the method, an apparatus is provided for cleaning a brake disc that has been primed, coated, and deep-rolled, and the brake disc is cleaned using this apparatus. The cleaning apparatus may be, for example, an apparatus that cleans the brake disc by suction and / or blowing (e.g., through an air curtain). Preferably, the apparatus for cleaning the brake disc is arranged in the final position, such that the brake disc is cleaned in the last method step, thereby reducing material emissions from the equipment.

[0022] Finally, according to another design of the method, the brake disc is cleaned before step h) and / or before step k). This design is based on the idea that not only can the aforementioned "final cleaning" of the brake disc be performed, but it is also advantageous to clean it before deep rolling the primer-coated brake disc (step h) and / or before deep rolling the coated brake disc (step k), because a dust-free environment improves the rolling results. Cleaning the brake disc before deep rolling can be achieved, for example (as previously described), by suction and / or blowing. The necessary equipment for cleaning the brake disc can be integrated directly into the rolling mill, or (in a previous position) into the turning device. Alternatively, two additional positions (e.g., ten positions instead of eight) can be provided, allowing separate cleaning devices to be arranged at positions before the two rolling mills. Attached Figure Description

[0023] The invention will now be explained in detail with the aid of the accompanying drawings, which show only one preferred embodiment. The drawings show: Figure 1 The flowchart illustrating the steps of the method according to the present invention is shown in the diagram. Figure 2 A circular platform is shown for simplifying the implementation of the method according to the invention, and Figure 3 A flowchart of the method according to the present invention is shown. Detailed Implementation

[0024] Figure 1 The flowchart illustrates the steps of a method according to the invention for coating and deep rolling a brake disc B. Optional steps (shown in dashed boxes) are shown in addition to the mandatory steps. The mandatory steps are applicable, for example, to brake discs coated with only one layer (“single layer”). The method is also used, for example, to brake discs coated with two layers (“double layer”), such as a primer layer and another coating applied over that primer layer.

[0025] exist Figure 1 In the exemplary method shown, firstly, in steps a) to e), some devices V used in performing the method are provided. These steps are: step a) providing device V2 (optional) for applying primer to brake disc B, step b) providing device V5 for coating brake disc B, step c) providing device V4 (optional) for deep rolling the primer-coated brake disc B, step d) providing device V7 for deep rolling the coated brake disc B, and step e) providing device 1 for transporting brake disc B.

[0026] exist Figure 1 The method shown may further include optional steps, namely, applying a primer to a first side of the brake disc B (step f) and applying a primer to a second side of the brake disc B (step g). These two steps can be performed in the previously (optionally) provided apparatus V2 for applying a primer to the brake disc B. Applying a primer is understood as coating with a primer. Between steps f) and g), the brake disc B may optionally be rotated 180°, preferably in an apparatus V3 provided for this purpose and optionally previously provided for rotating the brake disc B. After applying the primer, the method continues with an optional step, namely, deep rolling (step h) on both sides of the primer-applied brake disc B. This step is preferably performed in the previously provided apparatus V4 for deep rolling the primer-applied brake disc B.

[0027] Next, the method performs the following steps: coating a first side of the brake disc B (step i) and coating a second side of the brake disc B (step j). These two steps are preferably performed in the previously provided apparatus V5 for coating the brake disc B. Between steps i) and j), the brake disc B is rotated 180°, preferably in the previously provided apparatus V6 for rotating the brake disc B. After coating, the method continues with a step of deep rolling both sides of the coated brake disc B (step k). This step is preferably performed in the previously provided apparatus V7 for deep rolling the coated brake disc B.

[0028] Figure 2 A circular platform 1 is shown as a transport device 1, used for simplified implementation of the method according to the invention. The circular platform 1 is shown in a top view and is rotatable about a central axis 2 in two directions of rotation (indicated by double arrows). Using the circular platform 1, the brake disc B can move back and forth between multiple positions, particularly between multiple processing positions and / or passing positions. For this purpose, the circular platform 1 has eight receiving portions 3 for accommodating the brake disc B respectively. The circular platform 1 can occupy at least the following positions P, particularly the processing position and / or the passage position: first position P1, where the brake disc B can be inserted and removed; second position P2, where the brake disc B can be primed; third position P3, where the brake disc B can be flipped; fourth position P4, where the primed brake disc B can be deep rolled; fifth position P5, where the brake disc B can be coated; sixth position P6, where the brake disc B can be flipped; seventh position P7, where the coated brake disc B can be deep rolled; and eighth position P8, where the brake disc B can be cleaned.

[0029] Preferably, corresponding devices V are provided at different positions P of the circular platform 1. These devices are: a first device V1 for loading and unloading the brake disc B, a second device V2 for applying a primer to the brake disc B, a third device V3 for flipping the brake disc B, a fourth device V4 for deep rolling the primer-coated brake disc B, a fifth device V5 for coating the brake disc B, a sixth device V6 for flipping the brake disc B, a seventh device V7 for deep rolling the coated brake disc B, and an eighth device V8 for cleaning the brake disc B.

[0030] exist Figure 2 The circular platform 1 shown can have (in) one or more receiving portions 3 Figure 2 (not shown) Lifting device and / or (in Figure 2A rotating device (not shown in the diagram) is used to lift and / or rotate the brake disc B during processing. The lifting and / or rotating device is preferably arranged below the receiving portion 3 so that the brake disc B can be lifted from below and rotated above the receiving portion 3. This lifting and / or rotating device is preferably arranged at the desired or required brake disc rotation position P on the circular table 1, namely, at the second position P2 (applying primer), the fourth position P4 (deep rolling), the fifth position P5 (coating), the seventh position P7 (deep rolling), and the eighth position P8 (cleaning).

[0031] Figure 3 A flowchart of the method according to the invention is shown. In the vertical direction, processing positions P1 to P8 are shown, namely, the positions of "applying primer" (P2), "flipping" (P3), "rolling" (P4), "coating" (P5), "flipping" (P6), "rolling" (P7), "cleaning" (P8), and "loading / removing" (P1). In the horizontal direction, cycle times (individual and cumulative) are shown. Numbers B1 to B14 in the table represent different brake discs to varying degrees of execution of the method.

[0032] The process will now be explained using the first brake disc B1 as an example. Brake disc B1 is first inserted into the receiving portion 3 of the circular platform 1 and rotated clockwise from the first position P1 to the second position P2, where a primer is applied from the first side (cycle time 60 seconds). Then, the circular platform 1 rotates further clockwise to position P3, where it is rotated 180° (cycle time 10 seconds). Then, the circular platform 1 rotates counterclockwise back to position P2, where the brake disc B1 is again positioned to apply a primer from the second side (cycle time 60 seconds).

[0033] After applying the primer, brake disc B1 first rotates forward two positions clockwise from position P2 (position P2: cycle time 60 seconds + position P3: cycle time 10 seconds), and then rotates back one position counterclockwise (position P2: cycle time 60 seconds). However, brake disc B1 is not machined at these positions; therefore, these positions are not machining positions, but rather positions determined by the machined position (in...). Figure 3 (Used as different shaded lines). Then, brake disc B1 rotates forward one position clockwise, allowing the two sides of the brake disc with applied primer to be deeply rolled at position P4 (cycle time: 60 seconds).

[0034] After deep rolling, brake disc B1 first rotates forward one position clockwise from position P4 (position P5: cycle time 10 seconds), and then rotates back one position counterclockwise (position P4: cycle time 60 seconds), but brake disc B1 is not machined in these positions; therefore, these positions are passing positions.

[0035] Then, brake disc B1 is rotated clockwise from position P4 to position P5 to allow coating to be applied from the first side (cycle time 60 seconds). Then, the circular platform 1 continues to rotate clockwise one position, causing brake disc B1 to rotate to position P6, where it is flipped 180° (cycle time 10 seconds). Then, the circular platform 1 rotates counterclockwise one position back, causing brake disc B1 to return to position P5 for coating to be applied from the second side (cycle time 60 seconds).

[0036] After coating, brake disc B1 first rotates forward two positions clockwise from position P5 (position P6: cycle time 60 seconds + position P7: cycle time 10 seconds), and then rotates back one position counterclockwise (position P6: cycle time 60 seconds), but brake disc B1 is not machined at these positions; therefore, these positions are pass-through positions. Afterwards, brake disc B1 rotates forward one position clockwise, allowing the coated sides of brake disc B1 to be deep-rolled at position P7 (cycle time: 60 seconds).

[0037] After deep rolling, brake disc B1 first rotates forward one position clockwise from position P7 (position P8: cycle time 10 seconds), and then rotates back one position counterclockwise (position P7: cycle time 60 seconds), but brake disc B1 is not machined in these positions; therefore, these positions are passing positions.

[0038] Then, brake disc B1 continues to rotate clockwise one position to be cleaned at position P8 (position P8: cycle time 60 seconds). Finally, brake disc B1 continues to rotate clockwise one more position to be removed from the pedestal at position P1. The total cycle time for the brake disc to completely pass through all positions is 970 seconds, or approximately 16 minutes.

[0039] The process described using the first brake disc B1 as an example is also performed in a corresponding manner (albeit at different times) for the other brake discs B2 to B14, such as by Figure 3As can be seen, up to eight brake discs B can be placed simultaneously on the circular stage 1, corresponding to the number of receiving parts 3, and can be processed at different processing positions or temporarily "parked" at different passing positions. The brake discs B are sequentially loaded into the circular stage 1 at intervals of approximately 130 seconds, so that one brake disc B can be manufactured approximately every 130 seconds.

[0040] The process described indicates that the circular platform 1 moves according to the so-called "Pilger stepping method", that is, it moves two positions along a first rotation direction (clockwise), and then moves one position along a second rotation direction opposite to the first rotation direction (counterclockwise), and so on.

[0041] Explanation of reference numerals in the attached figures

[0042] 1: Transport device / circular platform

[0043] 2: Central axis

[0044] 3: Reception area

[0045] B, B1-B8: Brake discs

[0046] P, P1-P8: (Positions of circular platform 1)

[0047] P1: The (first) position of the circular platform (loading / removing)

[0048] P2: The (second) position of the circular platform (apply primer)

[0049] P3: The (third) position of the circular platform (flipped)

[0050] P4: The fourth position of the circular platform (deep rolling)

[0051] P5: The fifth position of the circular platform (coating)

[0052] P6: The sixth position of the circular platform (flipped)

[0053] P7: The seventh position of the circular platform (deep rolling)

[0054] P8: The eighth position of the circular platform (cleaning)

[0055] V1: (First) Device for inserting and removing the brake disc

[0056] V2: (Second) Device for applying primer to brake discs

[0057] V3: (Third) Device for flipping the brake disc

[0058] V4: (Fourth) Device for deep rolling of brake discs to which primer has been applied.

[0059] V5: (Fifth) Device for coating brake discs

[0060] V6: (Sixth) Device for flipping the brake disc

[0061] V7: (Seventh) Device for deep rolling coated brake discs.

[0062] V8: (Eighth) Device for cleaning the brake disc.

Claims

1. A method for coating and deep-rolling a brake disc (B), comprising the following steps: b) Provide a device (V5) for coating the brake disc (B). d) Provide an apparatus (V7) for deep rolling the coated brake disc (B). e) Provide a device (1) for transporting the brake disc (B). i) Apply a coating to the first side of the brake disc (B). j) Coating the second side of the brake disc (B), and k) Deep rolling is performed on both sides of the coated brake disc (B). The brake disc (B) is transported by the transport device (1) between the device (V5) for coating the brake disc (B) and the device (V7) for deep rolling the coated brake disc (B). Its features are, Steps i) and j) are performed sequentially on the same device (V5) for coating the brake disc (B).

2. The method according to claim 1, comprising the following steps: a) Provide a device (V2) for applying primer to the brake disc (B). c) Provide a device (V4) for deep rolling the brake disc (B) to which the primer has been applied. f) Apply primer to the first side of the brake disc (B). g) Apply primer to the second side of the brake disc (B). h) Deep rolling is performed on both sides of the brake disc (B) after applying the primer. The brake disc (B) is transported by the transport device (1) between the device (V2) for applying primer to the brake disc (B) and the device (V4) for deep rolling the brake disc (B) after applying primer. Its features are, Steps f) and g) are performed sequentially on the same device (V2) for applying primer to the brake disc (B).

3. The method according to claim 1 or 2, Its features are, In step h) and / or step k), both sides of the brake disc (B) are simultaneously deep rolled using a feed method, for which the rolls move in the radial direction of the brake disc (B).

4. The method according to any one of claims 1 to 3, Its features are, A rotatable circular stage (1) is provided as a transport device (1), by which the brake disc (B) can move back and forth between multiple positions (P), especially between multiple processing positions and / or passing positions.

5. The method according to claim 4, Its features are, The circular platform (1) has multiple receiving portions (3), preferably eight receiving portions (3), which are used to respectively receive the brake disc (B).

6. The method according to claim 5, Its features are, The circular table (1) has a lifting device and / or a rotating device on at least one receiving part (3) for lifting and / or rotating the brake disc (B) during processing.

7. The method according to any one of claims 3 to 6, Its features are, The circular stage (1) can occupy at least the following positions (P), especially the machining position and / or the passage position: - First position (P1), in which the brake disc (B) can be inserted and removed. - Second position (P2), in which primer can be applied to the brake disc (B). - Third position (P3), in which the brake disc (B) can be flipped. - Fourth position (P4), where the brake disc (B) with the primer applied can be deep rolled. - Fifth position (P5), where the brake disc (B) can be coated. - Sixth position (P6), in which the brake disc (B) can be flipped. - Position 7 (P7), where the coated brake disc (B) can be deep rolled, and - Eighth position (P8), where the brake disc (B) can be cleaned.

8. The method according to any one of claims 3 to 7, Its features are, The circular platform (1) changes its rotation direction between applying primer to the first side of the brake disc (B) and applying primer to the second side of the same brake disc (B), so that the brake disc (B) can be flipped between applying primer to the first side and applying primer to the second side, and so that both sides of the brake disc (B) can be primed in the same device (V2).

9. The method according to any one of claims 3 to 8, Its features are, The circular platform (1) changes its rotation direction between the first side of the brake disc (B) being coated and the second side of the same brake disc (B) being coated, so that the brake disc (B) can be flipped between the first side and the second side being coated, and both sides of the brake disc (B) can be coated in the same device (V5).

10. The method according to any one of claims 3 to 9, Its features are, The circular platform (1) moves according to the Pilger step method, in particular, it moves two or more positions (P) along the first rotation direction, and then moves one or more positions (P) along the second rotation direction opposite to the first rotation direction.

11. The method according to any one of claims 1 to 10, Its features are, The circular platform (1) moves periodically, with different period times set, in particular, a first period time of about 10 seconds and a second period time of about 60 seconds.

12. The method according to any one of claims 1 to 11, Its features are, A device (V8) is provided for cleaning brake discs (B) that have been primed, coated and deep-rolled, and the brake discs (B) are cleaned using the device (V8).

13. The method according to any one of claims 1 to 12, Its features are, Clean the brake disc (B) before step h) and / or before step k).

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