JP5705198B2 - Yamagata rolling - Google Patents

Description

  The present invention relates to a horizontally arranged upper caliber roll and a horizontally arranged upper caliber roll that together define one rolling gap having an open caliber located in one rolling plane perpendicular to the conveying direction of the rolled product. The arranged lower caliber roll and the at least one pair of upset rolls that are not arranged horizontally and that set up a rolling plane that is set up vertically from the side of the rolled product and that is positioned perpendicular to the conveying direction of the rolled product. (Stauwalze), and a roll assembly (Walzen-Anordungung) that rolls a winker profile from a rolled product. This type of chevron profile is, for example, an angle having equilateral or unequal sides.

  The invention also relates to a compact group or a tandem group comprising at least one roll assembly.

  The present invention also relates to a method of manufacturing a chevron profile using a roll assembly.

  Furthermore, the present invention relates to a method for producing an angle profile using a compact group or a tandem group.

  This type of profile rolling is already known for a long time in actual use. In that case, the angle-shaped rolling is generally carried out by a duo rolling method (DUO-Walzverfahren) in a closed type caliber.

  Furthermore, for example, from DE 3627729, it is possible to observe a section rolling mechanism that uses a (universal) rolling stand, possibly in a reversible rolling operation, to form the desired profile section. .

  The use of multiple universally arranged universal rolling stands for the production of double T-shaped support profiles is disclosed, for example, in DE-A 14 27 875.

  The use of a duo rolling stand or universal rolling stand is advantageous with regard to the shape accuracy and dimensional accuracy of the chevron profile formed when rolling a pre-profile with a generally square or rectangular cross section to form the chevron profile. Despite being considered, these stands with work rolls arranged substantially horizontally are of the form caliber required for the flexibility of the production of different profiles and for the deformation process. This leads to the disadvantage of increasing the cost of producing different chevron profiles in terms of number. That is, for all methods using a closed path design (Karibrierung), in order to form a chevron profile from a rectangular cross section, 5 to 9 molding calibers are required depending on the angle of the chevron profile. It is typically done.

  In this case, the necessary caliber requires a large rolling barrel length and can only be used in a limited range of side thicknesses. However, many chevron profiles are manufactured with different side thicknesses. This further increases the number of necessary calibers and thus the rolling costs. Therefore, already in actual use, a duo-front stand is formed with a rectangular initial path cross section with a small angle or a pre-profiled initial path cross section with a relatively large angle, After that, it is generally deformed to the side thickness of the finished mountain-shaped material by running three times in the same cariba of Duo-Uni-Duo-Gruppe, Attempts have been made to improve the angle-rolling process within the rolling mechanism by deforming to the finished angle shape in a Duo-Fertig-Kaliber.

  However, a disadvantage of this embodiment is that in this type of rolling embodiment, a stand-up stand, which is generally designed as a simple duo stand, must be designed as a relatively expensive universal stand. Another major drawback of this universal rolling method is that a large non-driven vertical roll (Verticalwalze) has to be driven by the horizontal roll of the upright stand (Horizontalwalze). For this reason, the side thickness of the web, that is, the chevron, must also be reduced by rolling in the upstand. This leads to an increase in the thickness of the end of the formed profile material in the vertical rolling gap. On the other hand, this thickening is additionally enhanced by the necessary compression when the side thickness is small, and the resulting broadening of the rolled product. Finally, with this type of universal rolling process, it is impossible to provide a predetermined radius in a defined and controlled manner at the tip of the chevron side.

German Patent No. 3627729 German Patent Application No. 1427875

  Therefore, it is an object of the present invention to provide a simplified and improved formation of equilateral and unequal side chevron profiles with both sides having different thicknesses as the case may be. In the rolling mill row (Walzstrasse) arranged in a continuous manner, it is changed so that it can be carried out in a wide range of dimensions while maintaining tolerances.

  In order to solve this problem, in the roll assembly according to the present invention for rolling a chevron profile from a rolled product, an open or closed caliber positioned in one rolling plane perpendicular to the transport direction of the rolled product is provided. Horizontally arranged upper caliber rolls and horizontally arranged lower caliber rolls that together define one rolling gap, and the rolled product is swept up from the side, and perpendicular to the conveying direction of the rolled product A rolling plane defined by at least a pair of caliber rolls, and a rolling plane defined by a pair of upsetting rolls. Did not match.

  A preferred embodiment is the invention according to the dependent claims.

  In a preferred embodiment, the rolling plane defined by the pair of upsetting rolls is disposed after the rolling plane of the caliber roll in the transport direction of the rolled product.

  In a preferred embodiment, the rolling plane defined by the pair of upsetting rolls is disposed in front of the rolling plane of the caliber roll in the conveyance direction of the rolled product.

  In a preferred embodiment, the roll assembly can be used for continuous and / or reversible rolling.

  In a preferred embodiment, the roll assembly is arranged on one common stand foundation.

  In a preferred embodiment, the chevron profile has an equilateral cross section.

  In a preferred embodiment, the chevron profile has an unequal cross section.

  In a preferred embodiment, the spacing between at least one pair of upsetting rolls is adjustable relative to each other to a spacing smaller than the barrel width of the caliber roll.

  In a preferred embodiment, the upsetting roll has a caliber profile that is likewise formed at least partially over the length, preferably in pairs.

  In a preferred embodiment, the chevron profile has a side tip radius formed as a natural or rounded edge.

  In a preferred embodiment, the upsetting rolls are each positionable relative to the rolled product, preferably independently of one another, with the longitudinal axis offset by 90 ° relative to the respective longitudinal axis of the caliber roll. is there.

  Moreover, in order to solve the said subject, in the compact group or tandem group which concerns on this invention, it was made to provide at least 1 above-mentioned roll assembly.

  A preferred embodiment is the invention according to the dependent claims.

  In a preferred embodiment, the compact group or tandem group comprises at least one front stand, a stand having the roll assembly described above, and a pair of horizontal upsetting rolls (edgers), preferably at least one front stand, A stand having a roll assembly and an edger.

  In a preferred embodiment, the compact group or tandem group comprises at least one front stand, a stand comprising the roll assembly described above, and a finishing stand.

  Further, in order to solve the above-mentioned problem, in the method of manufacturing the chevron profile according to the present invention, the roll assembly is an open type or a closed type which is located in one rolling plane perpendicular to the conveyance direction of the rolled product. Horizontally arranged upper caliber rolls and horizontally arranged lower caliber rolls that together define one rolling gap having a number of calibers, and the rolled product are swept up from the side, and the rolled product is conveyed in the conveying direction. And at least a pair of upsetting rolls that are not horizontally arranged to define one rolling plane that is vertically positioned, and is defined by at least a pair of upsetting rolls that are defined by a pair of caliber rolls. Using a roll assembly that does not coincide with the rolling plane, the rolled product is placed in front of a rolling pass (Walzstich) and / or through a horizontally arranged caliber roll. Later, it was such that deformation by at least a pair of swaging rolls not arranged horizontally.

  A preferred embodiment is the invention according to the dependent claims.

  In a preferred embodiment, preferably all deformations of the rolled product, including finish rolling after pre-rolling in the pre-rolling stand, are arranged horizontally when using a profiled upset roll It is carried out by a caliber roll and a setup roll and using a pair of horizontal setup rolls (edgers).

  In a preferred embodiment, all deformations of the rolled product, including finish rolling after pre-rolling at the pre-rolling stand, are carried out by means of horizontally arranged caliber rolls and upsetting rolls and using a single finishing stand.

  Furthermore, in order to solve the above-mentioned problem, in the method for producing the chevron profile according to the present invention, the chevron profile is produced by using the above-mentioned compact group or tandem group.

  The present invention relates to an apparatus, in which a rolling plane defined by at least a pair of caliber rolls having an open or closed type caliber does not coincide with a rolling plane defined by at least a pair of upset rolls, in particular, a rolled product, in particular a steel to chevron A modified roll assembly for rolling a profile is provided. Rather, the upsetting rolls are arranged in pairs, in the rolling direction, before and / or after the rolling gap defined by the caliber roll. The rolling stand according to the present invention can perform chevron rolling in a reversible operation mode or a continuous operation mode.

  Preferably, the present invention allows for rolls of side tip radii formed as natural edges and rolls of side tip radii formed as rounded edges with a roll assembly modified according to the present invention. An equilateral or unequal chevron having a side thickness of equal thickness or unequal thickness and having a natural edge or a predetermined rounded edge is a modification of the roll assembly according to the present invention. Can be rolled in an open or closed path design, but with the main standard stand arrangement of reversible, semi-continuous or fully continuous rolling equipment. The natural edge is understood as a contour as a result of free widening when the contour geometric shape is deformed without intentional control.

  Preferably, from an initial pass section dimensioned to a geometrically sufficient size, the initial pass required for the size of the chevron to be produced each time in the rough rolling pass (Vorstich) is For the path design, it is rolled in a generally known manner with an open or closed caliber. These cross-sectional shapes, referred to as the leading path, are preferably geometrically matched to the subsequent caliber with respect to that shape. However, it is also advantageous if the caliber is geometrically matched to the cross-sectional shape predetermined by the leading path. This ultimately means that the open or closed path design in the present invention is already adapted to the existing leading path geometry, or possibly used without further modification. ing.

  In a universal rolling stand, a vertical roll which is common from the prior art and is opposed to the central axis of a horizontal roll in a pair, so that the rolling plane defined by the work roll coincides with the rolling plane defined by the upsetting roll is According to the invention, it is arranged before and / or after the so-called H-roll (H-Walzen), preferably replaced by a caliber roll or an upsetting roll, preferably vertically, which can enter the barrel region of the H-roll. The

  In a preferred embodiment of the present invention, since the upsetting rolls are arranged in a pair after the caliber rolls, the rolling plane defined by at least one pair of upsetting rolls is positioned after the rolling plane of the caliber rolls in the conveyance direction of the rolled product. doing. In another still preferred aspect of the present invention, since the upsetting rolls are arranged in pairs in front of the caliber rolls, the rolling plane defined by at least one pair of upsetting rolls is rolled by the caliber rolls in the conveyance direction of the rolled product. Located in front of the plane. However, in a particularly preferred embodiment, at least one pair of upsetting rolls is arranged before the caribarol and at least one upsetting roll is arranged after the caribarol. This preferably aids in particular the reversible operation of the roll assembly according to the invention.

  However, the roll assembly according to the present invention can also be used in a continuous rolling operation. There are no restrictions on equipment technology. For example, when a roll assembly with upsetting rolls placed before and after the cariba roll is to be used in continuous operation, it may be sustained, if necessary, with a pair of upsetting rolls placed before the cariba roll. It can be individually moved out of the edge area of the chevron, thereby not affecting the rolling result. The same is of course true for the pair of upset rolls placed after the caliber rolls in the rolling direction.

  The roll assembly according to the invention is arranged on one common stand foundation and is therefore advantageous when used in a rolling mill row as a so-called modified universal rolling stand. This preferred embodiment can also assist in retrofitting or replacing the stand or replacing the entire roll set.

  The arrangement of the upsetting roll pair before and / or after the rolling plane of the caliber roll is particularly advantageous because the spacing between the upsetting rolls can be adjusted to a spacing less than the barrel width of the caliber roll when required. is there. In the case of a conventional universal rolling stand, the mutual adjustment of the positions of the upsetting rolls is usually limited by the size setting of the work roll, especially when the profile width is narrower than the barrel width of the work roll. There was no possibility to use. This problem is solved by particularly simple means according to the invention, and the usability of the roll assembly according to the invention is improved without having to assemble a caliber roll having a narrower barrel width for a narrower profile. Thereby, the width | variety rolled can also be made smaller than a horizontal barrel width. This avoids the major disadvantages of universal caliber rolling known from the prior art in the rolling gap between the V roll and the end face of the H roll, using common H and V roll assemblies.

  Thereby, at the same time, the mountain-shaped material having sides with different lengths can be rolled by the same roll set. This is preferably subsidized, in particular, if the upsetting rolls can be adjusted relative to the rolled product individually and even within each pair of upsetting rolls.

  The plurality of stand H-rolls have open stretch calibers similarly formed to reduce the thickness to the desired chevron finished product thickness. In this case, the barrel width is typically selected so that the longest side length assigned to the dimension group inherent in the design is also deformed in the barrel region of the H roll in all the stands.

  In the sense of the present invention, the upsetting roll need not be arranged vertically and perpendicular to the caliber roll. Rather, the upsetting roll has a longitudinal axis only with respect to the longitudinal axis of the upper or lower caliber roll, so that in principle it is V-shaped at the position of one or more pairs of upsetting rolls. A mode in which is formed is also included in the concept of the present invention. The advantage of the tilting position of the longitudinal axis of the upsetting roll lies in the relatively small bounce of the edges in the finishing path. This is particularly advantageous for chevrons having a large side length.

  In principle, due to the possibility of the roll assembly according to the invention in which the upsetting roll is inclined with respect to the rolled product, the possibility of producing a highly versatile profile is possible without the need to replace all equipment parts. Granted. In that case, the influence on the average profile width to be drawn, and thus the side length, is preferably exerted via upsetting rolls which are arranged vertically but at least tilted. The width-dependent dimensions are defined in a universal rolling stand, preferably modified, mainly by the possible vertical positioning range of the roll assembly. This is because the upsetting roll is not disturbed by the H barrel width.

  The shape of the upsetting roll of the roll assembly according to the present invention is not necessarily a cylindrical shape having a strictly circular cross section, and may deviate from this cylindrical shape over at least the partial length of the upsetting roll. In the sense of the present invention, the vertical upsetting roll is dependent on the horizontal caliber shape of the caliber roll used when the above-mentioned natural edges or unspecified edge radii are desired at the edges of the chevron profile desired to produce. It is formed smoothly in a columnar shape or a conical shape. However, in order to achieve a defined side edge with a predetermined end radius (Auslaufradius), a vertically arranged upset roll is stepped and has a predetermined transition radius at the stepped corner. May be formed. However, a stepped upset roll with a transition radius is preferably also because of the horizontal caliber shape of the caliber roll, where the sides of the chevron profile are horizontal and parallel to the longitudinal axis of the respective caliber roll. Can be used.

  The use of stepped and vertically arranged upset rolls with a predetermined transition radius between the sides of the chevron profile allows the use of new and unusual modes of operation of caliber rolls and upset rolls when necessary. Can be realized.

  In so doing, different methods and positioning types are preferably selectable based on the selected path design or contour of the caliber roll and the upsetting roll.

a) Use of a smooth upset roll having a cylindrical configuration and a work roll caliber in which the sides of the chevron profile are horizontal and parallel to the axis of the caliber roll:
Horizontal and vertical position adjustments are used in the same way as normal universal rolling. Since the direction of the horizontal and vertical position adjustment is perpendicular to the side thickness of the chevron profile desired to be formed and the width of the stretched material, it is 1: 1 directly depending on the change in the position adjustment process. Work in ratio. At that time, the rolling line (Walzlinie) stays in the center according to the initial orientation, and does not change depending on the change of position adjustment performed in some cases.

b) Use of a smooth upset roll having a conical configuration and a work roll caliber whose side is inclined horizontally with respect to the axis of the H roll:
In this case, the horizontal and vertical position adjustments affect the side thickness of the chevron profile desired to be formed and the width of the stretched material through predetermined factors. In that case, the direction of action of the positioning process is not perpendicular to the contour values that are to be affected, ie the side thickness and the material width to be stretched. A fully automatic position adjustment and rolling gap control system which is preferably used preferably takes this effect into account and simplifies the handling of all control systems. Also in this aspect, the rolling line stays in the center according to the initial orientation, and does not change depending on a change in position adjustment performed in some cases.

c) Use of a stepped and path designed vertical upset roll having a cylindrical configuration and a horizontal work roll caliber whose sides are horizontal and parallel to the axis of the H roll:
In this case, the horizontal and vertical position adjustment changes directly affect the side thickness and the stretched material width in a 1: 1 ratio. This is because the operating direction of the position adjustment is located perpendicular to the side thickness of the chevron profile and from this stretched material width. In this aspect, the position of the profile of the lower profile of the lower work roll is determined by the vertical upsetting roll that has been stepped and path designed. This gives rise to the possibility that in some cases only the upper horizontal roll may be adjusted to reduce the side thickness. A fully automatic position adjustment and rolling gap control system that is preferably used takes this into account in some cases and locks the horizontal position adjustment under the work roll in such cases. The center of the rolling line is systematically shifted toward the lower caliber roll in the horizontal direction according to the change in the position adjustment of the upper horizontal roll.

d) Use of a stepped and path designed vertical upset roll having a conical configuration and a horizontal work roll caliber where the profiled profile edges to be rolled are inclined horizontally to the axis of the H roll:
In this case, the horizontal and vertical position adjustments act on the side thickness of the profile of the profile material to be rolled and the material width to be stretched, with a predetermined factor interposed. In that case, the direction of action of the positioning process is not perpendicular to the profile value of the chevron profile that is to be affected, i.e. the side thickness and the width of the stretched material. The position of the profile of the lower profile of the lower horizontal caliber roll is fixedly associated with the vertical upsetting roll by the vertical upsetting roll which is stepped and path-designed. Changes in the vertical position adjustment of the upsetting roll affect this correspondence and are preferably compensated for by correcting the position of the lower horizontal caliber roll. The side thickness reduction of the chevron profile can preferably be achieved exclusively by adjusting the position of the upper horizontal caliber roll. The fully automatic position adjustment and rolling gap control system preferably used then takes into account all these effects and results in a particularly simple handling of the method. In this case, the center of the rolling line is systematically shifted toward the lower horizontal work roll in accordance with the change in the position adjustment of the upper horizontal caliber roll. The correction of the position of the lower work roll may have a reverse effect or an increasing effect depending on the vertical dimensional change.

  In general, it should be noted that existing rolling mill trains with universal stands are characterized in terms of their construction by replacement of universal stands and upstands. When the upstand is sufficiently dimensioned for its maximum rolling force and its maximum rolling moment, the upstand can be included in the rolling process for reducing the side thickness of the chevron profile. At that time, the universal stand realizes the main deformation work when manufacturing the chevron profile from the front profile based on the mechanical design regarding the maximum rolling force and the maximum rolling moment. In this case, in the universal stand, in addition to the reduction of the side thickness, the average deformed material width to be stretched is also adapted to different chevron material dimensions for the purpose.

  Since each roll assembly according to the present invention has upsetting rolls arranged in pairs, before and / or after the horizontal arranged caliba rolls, the use of the roll assembly according to the present invention is upsetting. When the roll is small, the extended profile width of the chevron profile is extremely effective even though it may be well below the maximum vertical rolling force for a typical vertical roll with large roll diameter and large barrel width Control.

  Since the universal arrangement in the prior art generally has twice as many universal stands as compared to upset stands, the present invention preferably provides a required width reduction of twice that of generally known universal angle rolling methods. The number of paths is distributed. Furthermore, the placement of upsetting rolls before and / or after the horizontal caliber rolls can immediately invalidate again the widening caused by the reduced side thickness in the path. This further doubles the number of possible vertical passes when using the roll assembly according to the present invention. This has the advantage of deformation technology, especially when manufacturing thin side thicknesses where the width reduction can be kept reasonably low.

  For example, the additional possibility of upsetting roll configurations with respect to continuous arrangements with different diameters or offset arrangements before and / or after a stand supporting a horizontal caliber roll is the production of different chevron profiles. Extend the flexibility of time.

  In a particularly preferred embodiment of the invention, the roll assembly according to the invention is part of a rolling mill line having at least one rolling stand comprising at least one roll assembly according to the invention and at least one finishing caliber. Alternatively, the roll assembly according to the present invention comprises a compact group or a tandem group comprising at least one roll assembly and finish caliber according to the present invention and a pair of upsetting rolls arranged between the roll assembly and the finish caliber. It may be a part. In the second aspect, it is particularly advantageous if the compact finishing group has two roll assemblies according to the invention and a pair of upsetting rolls arranged between the two roll assemblies. Thereby, the applicability of the roll assembly according to the present invention to the existing equipment concept is particularly preferably subsidized while completely achieving the problems described at the beginning.

  In a reversible arrangement having a generally three-stand compact group with two universal stands and one upstand stand, the horizontal work roll caliber in the universal stand and upset stand is generally formed identically. In such a case, the second universal stand must be used as a duo stand to accommodate the finishing cariba. However, this means that in the sense of the present invention the upsetting stand (with upsetting rolls arranged horizontally, the so-called “edger”) is movable, has a sufficient barrel length, and the upsetting stand It can be avoided if the dimensions are mechanically strong enough. In this case, the finish caliber can be placed on a set-up stand (edger), and the second rolling stand comprising the roll assembly according to the present invention can be used together for effective pre-rolling. Furthermore, the additional arrangement of the finishing caliber on the barrel of the upstand stand is also possible for a two-stand type rolling stand group comprising a roll assembly and upset stand (edger) according to the invention for this type of angle rolling. Can be usable.

  This is also the case when there is a separate finishing stand for the compact group. In the first and second rolling stands of the compact group, the angle of the chevron profile has to be remarkably difficult to adjust in the finishing stand at the 90 ° position when the angle of the angling process (Klapprosess) is large. The stretched caliber can be selected to have a different acute angle geometry. In this case, a continuous angling process can be carried out, preferably in a fully or partially upset stand. In this case, the preparation angling to the 90 ° position is preferably the second of the upstand stand itself when using a mobile upset (edger) with a horizontally arranged upset roll having a sufficient barrel length. It is possible to prepare even in the cariba. In this case, during the last run, preferably the second rolling stand with the roll assembly according to the invention passes the rolling profile, and the angling process is prepared in the front cariba in the upsetting machine, Complete in a separate finishing stand. The advantage of this special solution is a flatter form of the rolling stand modified according to the invention with a slight caliber wear, especially in the finished caliber, and an open or closed caliber. This allows for better roll utilization overall.

  With respect to the invention of the method, the present invention comprises a roll assembly having an open or closed caliber located in one rolling plane perpendicular to the conveying direction of the rolled product, in order to produce chevron profiles 1 Horizontally arranged upper caliber rolls and horizontally arranged lower caliber rolls that define two rolling gaps together, and the rolled product is swept up from the side and positioned perpendicular to the conveying direction of the rolled product A rolling plane that is defined by at least a pair of caliber rolls and a rolling plane that is defined by the pair of upsetting rolls. This is realized by using a roll assembly. In the present invention, the rolled product is deformed by at least a pair of upsetting rolls that are not horizontally arranged before and / or after the rolling pass through the horizontally arranged cariba rolls.

  The advantages that result from this are the same as those already described for the device according to the invention.

  By configuring in this way, a rolling mill in which a reversible or continuous arrangement of a deformed material having equilateral and unequal chevron shapes having different thicknesses depending on the case of both sides is arranged in a reversible or continuous manner. It can be implemented in a wide range of dimensions while maintaining tolerances in the rows.

  In the following, the invention will be described in detail with reference to two figures schematically showing an advantageous embodiment of the invention.

It is a side view of the universal rolling stand which concerns on this invention. It is a figure which shows each different caliber geometric shape before the upsetting roll in the universal rolling stand which concerns on this invention.

  FIG. 1 shows a roll assembly 1 according to the present invention in which an upper caliber roll 2 arranged horizontally and a lower caliber roll 3 arranged horizontally define a rolling gap and a rolling plane. This rolling plane is positioned perpendicular to the direction of travel of the rolled product 6 (shown schematically by arrow> travel <). The roll assembly 1 shown in FIG. 1 arranged in one common stand is used as a reversible rolling stand. Through the reversible rolling stand, the rolled product 6 passes through the rolling plane defined by the upper caliber roll 2 and the lower caliber roll 3 from left to right and from right to left in the drawing. A pair of left side up rolls 4 are arranged shifted to the left in the drawing relative to the rolling plane defined by the caliber rolls 2 and 3, and among the pair of left side up rolls 4, in the figure, Only the upside roll is shown. Similarly, the right set-up roll pair 5 is arranged at equal intervals with respect to the rolling plane of the upper caliber roll 2 and the lower caliber roll 3. The rolling plane of the right set-up roll pair 5 is also perpendicular to the conveying direction of the rolled product 6 and does not coincide with the rolling plane defined by the upper and lower caliber rolls 2 and 3. Based on the small longitudinal dimension of each upsetting roll 4,5 and the size of the deviation of each rolling plane of the upsetting roll pair 4,5 relative to the rolling plane defined by the upper and lower caliber rolls 2,3, respectively The adjustment of the up-and-down roll pairs 4 and 5 in the approaching direction can be performed closer to the rolling barrel width of the upper and lower caliber rolls 2 and 3. Thereby, the roll assembly 1 which concerns on this invention provided with an open-type caliber is provided.

  FIG. 2 shows upsetting roll pairs 4a, 4b and 5a, 5b, respectively. The pair of upsetting rolls 4a, 4b has a smooth cylindrical path design or contour in which the longitudinal axis thereof is arranged vertically with respect to the chevron profile 6. The chevron sides 9 and 10 are formed by the path design or contour of the upsetting rolls 4a and 4b. The chevron sides 9 and 10 are located in parallel and in a straight line, and are connected to each other via a chevron vertex 8 provided on the upper surface of the chevron profile 6 and a chevron radius 11 provided on the lower surface of the chevron profile 6. Has been. In the right view of FIG. 2, pass-designed or grooved or contoured upset rolls 5a, 5b are used. The longitudinal axes of the upsetting rolls 5a and 5b are arranged vertically in the same manner as the longitudinal axis of the upsetting rolls 4a and 4b shown in the left figure. However, based on the path design or contour of the upsetting rolls 5a and 5b, the sides 9 and 10 of the chevron profile 6 that are not parallel to each other and are not arranged in a straight line are formed. However, as in the embodiment shown in the left diagram of FIG. 2, the sides 9 and 10 are provided on the top of the chevron 6 and the bottom of the chevron 6. Are connected to each other via a chevron radius 11. In addition, the path design or contour of the upsetting rolls 5 a and 5 b forms a side tip radius 7 on the lower surface of each side 9 and 10 of the chevron profile 6.

  1 roll assembly, 2,3 caliber roll, 4,4a, 4b; 5,5a, 5b upset roll, 6 chevron profile, 7 edge radius, 8 chevron apex, 9,10 chevron, 11 chevron radius

Claims (14)

Horizontally arranged upper caliber roll (2) and horizontal that together define one rolling gap with open or closed calibers located in one rolling plane perpendicular to the conveying direction of the rolled product (6) Lower caribarol (3) located in
The rolled product (6) is set up from the side and at least a pair of upset rolls (not horizontally arranged) defining one rolling plane positioned perpendicular to the conveying direction of the rolled product (6) ( 4, 5)
In a common stand, the rolling plane defined by at least a pair of caliber rolls (2, 3) and the rolling plane defined by a pair of upsetting rolls (4, 5) do not match, rolling plane defined by the roll (4,5) swaging the pair is disposed before and at least one after the rolling plane of the the conveying direction of the rolled material (6) Karibaroru (2,3) The distance between the pair of upsetting rolls (4, 5) can be adjusted to be smaller than the barrel width of the caliber rolls (2, 3). Roll assembly that rolls material.   The roll assembly according to claim 1, which can be used for continuous and / or reversible rolling. The roll assembly according to claim 1 or 2 , wherein the chevron profile has an equilateral cross section. The roll assembly according to any one of claims 1 to 3 , wherein the chevron profile has an unequal cross section. The roll (4,5) is upsetting, over at least part length, and preferably has a caliber profile which is similarly formed in the pair form a roll assembly according to any one of claims 1 to 4. The roll assembly according to any one of claims 3 to 5 , wherein the chevron profile has a side tip radius (11) formed as a natural edge or a rounded edge. Each of the upsetting rolls (4, 5), preferably independently of each other, has a longitudinal axis offset by 90 ° with respect to the respective longitudinal axis of the caliber roll (2, 3), The roll assembly according to any one of claims 1 to 6 , wherein the position of the roll (6) is adjustable. Compact group or tandem group comprising at least one roll assembly according to any one of claims 1 to 7. Preferably at least one front stand comprising at least one front stand, a stand having the roll assembly according to any one of claims 1 to 7, and a pair of horizontal upsetting rolls (edgers); a stand having a roll assembly according to any one of items 1 to 7, consisting of edger, compact group or tandem groups of claim 8. Stand and, and a finishing stand, a compact group or tandem group according to claim 8 comprising at least one of the previous stand, the roll assembly of any one of claims 1 to 7. A method for producing a Yamagata profile,
Horizontally arranged upper caliber roll (2) and horizontal that together define one rolling gap with open or closed calibers located in one rolling plane perpendicular to the conveying direction of the rolled product (6) Lower caribarol (3) located in
The rolled product (6) is set up from the side and at least a pair of upset rolls (not horizontally arranged) defining one rolling plane positioned perpendicular to the conveying direction of the rolled product (6) ( 4, 5)
In a common stand, the rolling plane defined by at least a pair of caliber rolls (2, 3) and the rolling plane defined by a pair of upsetting rolls (4, 5) do not match, rolling plane defined by the roll (4,5) swaging the pair is disposed before and at least one after the rolling plane of the the conveying direction of the rolled material (6) Karibaroru (2,3) The pair of upsetting rolls (4, 5) uses a roll assembly in which the mutual interval is adjustable to be smaller than the barrel width of the caliber rolls (2, 3) ,
At least a pair of upsetting rolls (4, 5) which are not arranged horizontally before and / or after a rolling pass through the horizontally arranged cariba rolls (2, 3). A method for producing a chevron shaped profile material, wherein the deformed material is deformed by the method. Preferably, when the contoured upset roll (4, 5) is used, all deformations of the rolled product (6) including the finish rolling after the pre-rolling at the pre-rolling stand are arranged horizontally. 12. The method according to claim 11 , wherein the method is carried out by means of a caliber roll and a swaging roll (4, 5) and using a pair of horizontal swaging rolls (edgers). All deformation of the rolled product (6), including finish rolling after pre-rolling at the pre-rolling stand, is carried out by means of horizontally arranged caliber rolls and upsetting rolls (4, 5) and using the finishing stand. The method of claim 11 , wherein the method is performed. A method for producing an angle profile using the compact group or tandem group according to any one of claims 8 to 10 .

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