EP2585235A2 - Verfahren zum warmwalzen metallischer hohlkörper sowie entsprechendes warmwalzwerk - Google Patents
Verfahren zum warmwalzen metallischer hohlkörper sowie entsprechendes warmwalzwerkInfo
- Publication number
- EP2585235A2 EP2585235A2 EP11779565.8A EP11779565A EP2585235A2 EP 2585235 A2 EP2585235 A2 EP 2585235A2 EP 11779565 A EP11779565 A EP 11779565A EP 2585235 A2 EP2585235 A2 EP 2585235A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- hot rolling
- rolling
- hollow body
- rod
- 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
- 238000005098 hot rolling Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000008569 process Effects 0.000 title abstract description 14
- 239000000314 lubricant Substances 0.000 claims abstract description 223
- 238000005096 rolling process Methods 0.000 claims abstract description 136
- 239000007787 solid Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 28
- 238000003825 pressing Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 11
- 239000011888 foil Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 47
- 239000007788 liquid Substances 0.000 description 21
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 12
- 239000000843 powder Substances 0.000 description 12
- 239000012530 fluid Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 5
- 230000009969 flowable effect Effects 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 235000011837 pasties Nutrition 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009785 tube rolling Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 208000002599 Smear Layer Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/04—Cooling or lubricating mandrels during operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
Definitions
- the invention relates to a method for hot rolling metallic hollow bodies and to a corresponding hot rolling mill.
- the invention relates to a method for hot rolling metallic elongated hollow body by means disposed in the hollow body rolling rod, on which before the hot rolling process lubricant is applied.
- the invention also relates to a hot rolling mill for hot rolling metallic elongated hollow body by means disposed in the hollow body roll bar, with a hot rolling device and with a previously arranged lubricant application station.
- the present invention does not relate to the chrome plating and subsequent polishing of rolling rods, as disclosed, for example, in JP 2000- 246312 A and has already been known for much longer, and which, of course, also due to the polishing process Frictional values of the rolling rods lowers.
- a chromium layer remains a plurality of rolling operations on the rolling rod, while associated lubricant layers are applied before each rolling on the roll bar, so that lubricant is therefore regarded as a real commodity in such rolling operations.
- Such methods and devices are known for example from DE 100 44 1 1 1 AI and EP 0 076 170 AI, DE 100 44 1 1 1 AI a method for lubricating forming or forming tools, in particular also of hot forging tools, disclosed in which a powder consisting of graphite or a graphite-containing powder is charged electrically or electrostatically and then brought to the respective tool with the aid of an electric field.
- EP 0 076 170 Al discloses, in which case a liquid, optionally with suspended in the liquid lubricant particles, as this is also disclosed in US 5,492,639, is applied, while according to DE 100 44 1 11 AI the order of a solid but powdery therefore also takes place via a fluid lubricant.
- EP 1 775 038 B and US 2009/0293569 AI disclose the use of a powdered so fluid or flowable lubricant, which, however, is obviously applied without the use of an electric field with the aid of a carrier gas stream.
- a lubricating layer on the one hand on the inside of the hollow block to be machined so the workpiece are applied.
- a corresponding lubrication on the rolling rod, so on a tool be provided, which can be used as a lubricant graphite-based lubricant, for example, adding a plastic-based organic binder or mica-based lubricant with an inorganic binder based on borates.
- Solid lubricants for rolling rods are also disclosed in US Pat. No. 4,575,430, where the solid lubricant is applied to the rolling rod via abrasive or melting processes. While the latter processes lead directly to a liquid application of the lubricant, as has already been explained above, the former processes themselves seem, at first sight, apparently to impose an order of the lubricant in solid form on a corresponding rolling rod. However, due to the abrasive carryover of lubricant, the seemingly solid structure of the abrasive lubricant is broken up on a microscopic scale and a solid structure only forms again after application to the rolling rod.
- lubricant which is applied fluidly, as a powder, pastes, suspension or in other liquid form
- lubricant allows the application in solid form, for example in the form of films, sheets or other moldings, a faster and more reliable application, in particular, since the dangers of lubricant dropping uncontrollably or being removed again by virtually explosive evaporation processes of a carrier fluid can be reduced to a minimum.
- a "solid form” is inherently macroscopic and, to a certain extent, inherently stable Form of the lubricant, which can flow from fluid so flowable or spreadable states, which as Dahlteilchen- or multi-body mass flow, be it in ablative or ablative processes, in a powder stream, in a suspension or be it entirely as a liquid, characterized in that the characteristic dimensions of the solid lubricant in the time in which the lubricant is brought to the roll bar, are substantially greater than the final layer thickness.
- films, plates or other thin sheet-like but also bars are to be regarded as solid, as they are substantially larger than the layer thickness, namely as the rod diameter or as at least in one dimension in bars and the like or in two dimensions in plates or films the thickness of the sheets or plates are while dry powders can flow and are not inherently solid.
- the lubricant is prefabricated to next in a first process step and then brought the pre-assembled lubricant in a second process step to the rolling rod.
- the lubricant is prefabricated to next in a first process step and then brought the pre-assembled lubricant in a second process step to the rolling rod.
- a hot rolling mill for hot rolling metallic elongated hollow body by means disposed in the hollow body rolling rod proposed with a hot rolling device and with a previously arranged lubricant application station, which records by a lubricant preparation station, the separately is arranged by the lubricant application station.
- This allows for the first time a targeted application of lubricant outside a taking place during production or during rolling cycle process, which the Run through rods and which is ultimately determined by the clock speed of this circulation, which is already for energy reasons and also for reasons of cost, the goal is to circulate the rolling rods with the shortest possible frequency and not to let cool as possible. Possibly. It is also conceivable to run several Schmierstofkonfek- tionation stations in parallel, when the clock frequency of the rolling rods is so high that a lubricant preparation station can not pre-fabricate the lubricant sufficiently fast.
- Such non-synchronized prefastening is particularly advantageous when the lubricant is placed in solid form on the rolling rod.
- films or tapes can be prepared accordingly as a roll goods to then wrap them in the current production process on the rolling rods.
- plates or films can be preparatory cut or even - possibly only locally, for example in the field or just behind a roll stand tip - be prepared in several layers to this quickly and reliably put around a rolling rod in the current production process around.
- lubricant be it in solid or in non-solid form, can first be applied to a preforming process step in a die and then applied to the roll bar in the second process step, it is quite conceivable during the second process step that the lubricant is solid or not solid as long as it remains sufficiently stable in the die until it is transferred to the rolling rod.
- the invention also proposes a method for hot rolling metallic elongated hollow body with a arranged in the hollow body rolling rod, on which before the rolling lubricant is applied, this hot rolling process is characterized in that the lubricant applied in a die adapted to the roll bar and then applied to the roll bar.
- the latter solution allows cumulative or alternatively to the lubricant application in solid form a controlled and controllable lubricant on contract, in which also the risk of sudden evaporation of large quantities of liquid but also an accurate layer thickness control can easily be achieved, since ultimately the die without Further prepared and in the amount of lubricant can also be adapted locally to the appropriate requirements before the lubricant from the die starting on the roll bar is transmitted. The latter process can then happen very quickly, so that the overall process is thereby slowed down only slightly.
- the lubricant can be introduced into the die in solid form.
- the lubricant film can be inserted into the die.
- liquid or fluidic lubricant can also be applied to the matrix, with the possibility in particular of carrying out this process thoroughly and over a relatively long period of time, so that it proceeds in a controlled manner.
- evaporation or drying processes take place, so that an uncontrolled evaporation of these liquids, when they come into contact with the rolling rod, does not occur.
- the lubricant is transferred from the die to the rolling rods by either placing the rolling rod in the die or the die around the rolling rod.
- This allows in particular a suitable pressing of the lubricant to the roll bar, so that this reliable even during the follow-up processes, such as during transport to the hot alz owned and the introduction into the hollow body, remains on the roll bar.
- a corresponding pressing or pressing of the lubricant can also be done in other ways, as will be explained below.
- the lubricant can be brought in sheet or plate form to the roll bar, as already indicated above.
- pre-cut parts can also be used, so that a layer thickness ti variation of the lubricant can be readily and reliably realized already during the preparation can.
- correspondingly thin shaped bodies of lubricant be they arranged within a die or preformed cantilever in some other way, are to be designated as films.
- lubricant in foil or plate form is preferably pressed or pressed against the roll bar.
- the pressing or pressing on rollers or other modules can be done.
- the present invention proposes a method for hot rolling elongated metallic hollow bodies by means of a rolling rod arranged in the hollow body as a solution to the above problem, wherein lubricant is applied to the rolling rod before the hot rolling process and the process characterized in that the lubricant is pressed against the rolling rod.
- a "pressing on” is understood to be a force application by mechanical means.
- a hot rolling mill is also proposed for hot rolling metallic elongated hollow body by means of a rolling rod arranged in the hollow body, wherein the hot rolling mill comprises a hot rolling device and a previously arranged lubricant application station and is characterized by a device for pressing lubricants.
- the layer thickness can be selectively influenced, for example, by lubricant plates or foils or by moist powder, by sufficiently pasty lubricant or by corresponding molding dies, wherein the pressing device can comprise at least one lubricant application roller, which ensures a particularly controlled and controllable lubricant application.
- the risk of sudden evaporation of large amounts of liquid as already explained above, can be specifically minimized.
- the pressing device comprises at least one lubricant press, which may be realized for example by the aforementioned chains, in particular prism chains, or else by conveyor belts.
- films can also be applied to the roll bar. Accordingly, it is advantageous if the pressing device comprises at least one film winding device.
- the film tension may optionally already serve a pressing, wherein - depending on the specific implementation - nor a lubricant press or a corresponding pressure roller, which may also serve as a lubricant application facilities or as an order rollers, may be provided in order to ensure sufficient pressure forces ,
- a hot rolling mill for hot rolling metallic elongated hollow bodies by means of a rolling rod arranged in the hollow body, wherein the hot rolling mill comprises a hot rolling device and a previously arranged lubricant application station and is characterized in that the lubricant application station a device for varying the layer thickness of the lubricant along the rolling rod.
- a method of hot rolling metal elongated hollow bodies by means of a in the hollow body arranged roll bar on which prior to the hot rolling process lubricant is applied proposed, this method is characterized in that the layer thickness of the lubricant during application along the roll bar is varied.
- the layer thickness can be adapted to individual needs.
- a layer thickness variation over the axial extent of the rolling rod can be provided, for example with a maximum at 0.3 times the Wal2 rod length.
- the amount of lubricant can be minimized, whereby the total cost of hot rolling can be optimized accordingly.
- a suitably adapted layer thickness of the lubricant can be ensured that only the amount of lubricant is present at the appropriate points, which is actually required.
- the layer thickness can also be measured locally and the measurement result can be used for a control loop for regulating the layer thickness.
- the latter applies in particular when fluidic lubricants, ie pasty, liquid or powdered lubricants, are applied, since possible deviations from target specifications due to small disturbances are to be feared to a greater extent than is the case with solid lubricants.
- the lubricant can be applied in multiple layers to the rolling rod. This can be done in particular by different application methods, whereby this can be done a more accurate and easy coating thickness control and adaptation to individual needs, especially if the number of lubricant layers is chosen locally different.
- the type of lubricant layers can be adapted according to the requirements, and it is also possible to apply different types of lubricant in different layers.
- a multi-layer application of lubricant on the roll bar is also independent of the other features of the present invention for a method for hot rolling metallic elongated hollow body by means disposed in the hollow body roll bar on which lubricant is applied before the hot rolling process, is advantageous ,
- the lubricant layers may have different material properties, so that in this way the lubricating behavior can be influenced in the desired manner, wherein in particular the lubricant layers can also be locally varied and adapted to the requirements.
- the lubricant Before the lubricant is applied to the rolling rod, the lubricant may be provided with a functional agent. Thereby, the risk of uncontrolled or sudden evaporation of any liquids can be minimized, since the functional agent, even if it is applied to the lubricant in liquid or powder form, has time to make a good connection with the lubricant before the lubricant itself together with the functional agent is applied to the roll bar. On the other hand, it is also possible to apply a layer of functional agent directly on the roll bar before the lubricant is applied. The latter is particularly possible without the risk of uncontrolled or sudden evaporation of liquid or without the risk of dripping of functional agent when the functional agent is fixed.
- a functional agent in particular an adhesive, a binder, a release agent, such as lime or borax, and / or an insulating agent, in particular a thermal insulation agent, are used.
- any suitable additional material which still has to be applied to the Watzstange, come to be used.
- the functional agent can be applied in foil or plate form on the roll bar.
- the functional agent does not have to be provided between the lubricant and the rolling rod, it is advantageous if the lubricant is applied directly to the rolling rod.
- these may be from lubricant and / or from functional agents, especially as an alternative to reusable, usually metallic matrices, support materials, such as cellulose or paper, find use on which the means, so the lubricant and / or functional means, are applied before they are applied to the roll bar or introduced into the die.
- This makes it possible to form self-supporting structures for the lubricant or the functional agent even with very thin layer thicknesses, even if these layer thicknesses are not sufficient in themselves to sufficiently stabilize the material.
- the support materials can be removed after the lubrication of the rolling rod or after an introduction of the lubricant or the functional agent in the die and disposed of or re-use to be performed.
- the carrier materials can also remain on the rolling rod and be lost during rolling, for example burn, and if necessary can also be used as a functional agent.
- the method according to the invention but also the device according to the invention, are particularly suitable for lumps, tubes or other elongated hollow bodies which are to be hot-rolled using a rolling rod.
- any kind of lubricants suitable for hot rolling may be used.
- Particularly preferred is layered graphite, in particular when this has been lowered by known measures in its electrical conductivity.
- graphite-rich or graphite-free lubricants are also conceivable.
- Figure 1 shows the principle of tube rolling with internal rolling rod, in this case a
- Figure 2 shows the principle of tube rolling with internal rolling rod, in this case a
- FIG. 3 shows a spraying of liquid lubricant dispersion through a nozzle ring in a schematic longitudinal view
- FIG. 4 shows the arrangement according to FIG. 3 in a sectional view through the rolling rod
- Figure 5 shows a coating of a rolling rod by winding a lubricant foil
- FIG. 6 shows a roller bar lubrication in which a lubricant film is unwound from rolls and drawn longitudinally over the roll bar;
- Figure 7 is a pressing of lubricant to a rotating mandrel bar via a
- FIG. 8 shows a wetting of lubricant powder onto a rolling rod
- FIG. 9 shows a rolling rod cycle of a hot rolling mill with a lubricant application station.
- a rolling bar 2 as shown schematically in FIGS. 1 and 2
- a hollow block, in which a corresponding rolling bar 2 is arranged is attached to rolls, be it oblique rolls 3 (see FIG. 1) 2), with the rollers 3, 4 correspondingly shaping the workpiece 1 onto the rolling rod 2, which accordingly counteracts the rollers 3, 4 with a counter resistance, so that after rolling an elongated internal opening in the workpiece 1 remains.
- the rolling rod 2 with the workpiece 1 occurs not only on pressure but also sliding or rubbing in interaction.
- a lubricant is usually provided between the workpiece 1 and the rolling rod 2 in order to correspondingly reduce the load for both the workpiece 1 and the rolling rod 2. It should also be borne in mind that such rolling operations take place at relatively high temperatures, in particular also at temperatures above 1000 ° C.
- the lubricant film 8 prior to winding - depending on requirements - can be provided with a functional agent, such as a binder, an adhesive or the like.
- the lubricant film 8 may in particular also be designed to be self-adhesive or a suitable adhesive is previously applied to the rolling rod 2.
- the lubricant film 8 comprises a carrier layer, for example made of paper, cellulose or the like, wherein - optionally - the carrier layer after application of the lubricant to the roll bar 2 can be withdrawn again, if the lubricant layer then sufficient intrinsically stable remains on the roll bar 2, which can be ensured for example by a suitable adhesive or even by pressing.
- the lubricant film 8 can also be unwound longitudinally from a supply roll 9 and applied to the rolling rod 2, for example by means of two semicircular rolls 10, with two separate lubricant films 8 in the exemplary embodiment according to FIG be applied on both sides via a respective applicator roll 10 is worked. Likewise, even more supply rollers 9 with lubricant films
- the lubricant film 8 can first be formed into a tube and then pulled or slipped over the roll bar 2.
- such a mechanical pressing or pressing can also - in accordance with the embodiment shown in FIG. 7 - also be used advantageously in fluidic lubricants, for example in dry or at best only slightly moistened lubricant powder but also in a corresponding pasty material.
- the fluidic lubricant is applied, for example, from a lubricant supply 11 to an application belt 12, which rotates over deflection rollers 13.
- the application tape 12 is arranged slightly inclined to the direction of movement of the rolling rod 2, which rolls over the application tape 12, so that the lubricant is pressed against the rolling rod 2.
- the layer thickness can be controlled on the one hand by the speed of the application belt 12, by the withdrawal speed from the lubricant reservoir 11 and / or by the inclination between the rolling rod 2 and the application belt 12.
- Flowable lubricant can, as exemplified in Figure 8, are also applied from a storage container 1 1 via a blast wheel 14 on a rolling rod 2, said impeller 14 is preferably provided in a closed space in order to escape in this way To minimize lubricant and contamination of the workplace. Even with such a configuration, as, moreover, in the other embodiments mentioned above, it is possible to measure the lubricant thickness of the lubricant layer 15 in order to locally adapt the lubricant thickness to the desired requirements in this way.
- the lubricant can be mixed with a corresponding functional agent which has adhesive properties or other properties in order to promote adhesion to the rolling rod 2.
- a circulating application belt 12 also applied to the roll bar 2 contract rollers, similar to the application rollers 10 in the application example of Figure 6, can be used.
- other or more pressing-effective facilities such as nozzle arrangements or link chains or prismatic chains can be used accordingly, possibly also can serve as applicators. It is also conceivable that apply lubricant via brushes on the rolling rod 2.
- a perforated hollow block is first towed via a transverse transport 22 to a deoxidation plant 23. There, loose scale is blown out on the inner surface of the hollow block 21 and injected a borate and / or phosphate powder for dissolution firmly adhering Zunders. It is understood that, depending on the specific implementation of the present invention, alternative or further measures may be provided at this point.
- the hollow block 21 is positioned in front of a corresponding rolling mill 24 (in this case a longitudinal rolling mill) and a roller bar 2 coated with lubricant is inserted into the hollow block 21.
- a retaining device 25 which positions the roller bar 2 accordingly and also holds during the subsequent rolling.
- the rolling rod 2 can run freely without restraint, in which case preferably a corresponding positioning device for the rolling rod 2 is provided in order to introduce it into the hollow block 1 and then, if necessary, to further convey it.
- the rolling rod 2 After rolling, the rolling rod 2 is pulled back and driven by a transverse transport 26 from the rolling line. After the transverse transport, the rolling rod 2 is conveyed in this embodiment via roller tables 27 by a cooling device 28 and cooled there to the temperature necessary for later lubrication. Depending on the specific implementation of the present invention, it may also be possible to dispense with separate cooling.
- the rolling rod 2 is again transversely transported in a transverse transport 29 and fed to a lubricant application station 30 according to the invention, which in this embodiment is connected to a separate lubricant preparation station 33, from which prefabricated lubricant lubricant is stored.
- a separate lubricant preparation station 33 from which prefabricated lubricant lubricant is stored.
- the hot rolling mill 20 and the lubricant preparation station 33 are not synchronized with each other, it being understood that in other embodiments, synchronous working or even a waiver of such a separate Schrnierrnittelvorkanfetechnischtechnik may be provided.
- the latter lubricant application station 30 can be any of the above-described application stations, or implement each of the application methods described above.
- the bar After lubrication, the bar is transported via further roller conveyors 31 or, via a further transverse transport 32, to a waiting position, from which they are taken up by the restraint device 25 when it is retracted (dotted) and into a hollow block 21 provided can be introduced.
- a cycle for billet lubrication may differ in details from the above-described embodiment without departing from the spirit of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010025288 | 2010-06-28 | ||
| DE102010049645A DE102010049645A1 (de) | 2010-06-28 | 2010-10-28 | Verfahren zum Warmwalzen metallischer Hohlkörper sowie entsprechendes Warmwalzwerk |
| PCT/DE2011/001411 WO2012022284A2 (de) | 2010-06-28 | 2011-06-28 | Verfahren zum warmwalzen metallischer hohlkörper sowie entsprechendes warmwalzwerk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2585235A2 true EP2585235A2 (de) | 2013-05-01 |
| EP2585235B1 EP2585235B1 (de) | 2016-11-16 |
Family
ID=45115843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11779565.8A Not-in-force EP2585235B1 (de) | 2010-06-28 | 2011-06-28 | Verfahren zum warmwalzen metallischer hohlkörper |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10166583B2 (de) |
| EP (1) | EP2585235B1 (de) |
| CN (1) | CN102971094B (de) |
| DE (2) | DE102010049645A1 (de) |
| ES (1) | ES2613359T3 (de) |
| WO (1) | WO2012022284A2 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012019025A1 (de) | 2012-09-26 | 2014-03-27 | Sms Meer Gmbh | Deoxidation von schräggewalzten Hohlblöcken |
| DE102014008835A1 (de) | 2014-02-20 | 2015-08-20 | Sms Meer Gmbh | Innenwerkzeug, Innenwerkzeug-Datenbank und Verfahren zum Umformen von Werkstücken mittels eines Innenwerkzeugs |
| CN113210430A (zh) * | 2021-04-28 | 2021-08-06 | 太原理工大学 | 一种改善波纹辊轧制金属板材板形和表面质量的方法 |
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-
2011
- 2011-06-28 US US13/806,802 patent/US10166583B2/en active Active
- 2011-06-28 CN CN201180032244.2A patent/CN102971094B/zh not_active Expired - Fee Related
- 2011-06-28 ES ES11779565.8T patent/ES2613359T3/es active Active
- 2011-06-28 EP EP11779565.8A patent/EP2585235B1/de not_active Not-in-force
- 2011-06-28 DE DE112011104104T patent/DE112011104104A5/de not_active Withdrawn
- 2011-06-28 WO PCT/DE2011/001411 patent/WO2012022284A2/de not_active Ceased
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| Title |
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Also Published As
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| WO2012022284A3 (de) | 2012-06-28 |
| CN102971094A (zh) | 2013-03-13 |
| DE112011104104A5 (de) | 2013-09-05 |
| EP2585235B1 (de) | 2016-11-16 |
| US20130098128A1 (en) | 2013-04-25 |
| CN102971094B (zh) | 2015-11-25 |
| ES2613359T3 (es) | 2017-05-24 |
| WO2012022284A2 (de) | 2012-02-23 |
| DE102010049645A1 (de) | 2011-12-29 |
| US10166583B2 (en) | 2019-01-01 |
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