TH20162B - Methods and machines for extruding strips - Google Patents

Abstract

DC60 (17/03/41) Method for extruding a strip in a strip kit with at least two flatbeds, each with a horizontal adjustable upper and lower running rollers. Which the roller works to act accordingly Alone in a platform shape with two working rollers Or each running roller is directly supported. Or through the center roller by support roller Or action in a reverse rolling platform in which the material is rolled At least two passes In which the strip is introduced into the rolling platform until structural changes are made and the adjustment part acts on the strip to make the strip even of the profile and surface. Methods include a prediction of the shape of the surface irregularities. Intended on the broad side of Tabs in at least one area of the tab Figuring out the actual shape of skin irregularities In the area of the material bar And actually comparing the shape of the unevenness of the skin With a predetermined irregular shape Calculation of the difference between shapes Of those inconsistencies And the operation on the adjusting parts in a way that makes the difference The difference is minimal A method for extruding a strip in a strip kit with at least two platens, each with a horizontal adjustable upper and lower working rollers. Which the roller works to act accordingly Alone in a platform shape with two working rollers Or each running roller is directly supported. Or through the center roller by support roller Or action in a reverse rolling platform in which the material is rolled At least two passes In which the strip is introduced into the rolling platform until structural changes are made and the adjustment part acts on the strip to make the strip even of the profile and surface. Methods include a prediction of the shape of the surface irregularities. Intended on the broad side of Tabs in at least one area of the tab Figuring out the actual shape of skin irregularities In the area of the material bar And actually comparing the shape of the unevenness of the skin With a predetermined irregular shape Calculation of the difference between shapes Of those inconsistencies And the operation on the adjusting parts in a way that makes the difference The difference is minimal

Claims (8)

1. Hot rolling method Rolled material strips (3,4) in hot rolling lines (6) with at least two platens (7,8) with upper working rollers. And a horizontally adjustable lower (10,11) acting alone or in which each roller is supported either directly on the support roller (9) or via the center roller, or in the reverse roller. Where the material is rolled through at least two times where or where the rolled material strip (3,4) is brought into a characterized transformation that for the acquisition of an appropriate pre-determination. At least at the area of the strip material. The shape of the target flattening, which is determined depending on the intended use. As well as further cooling of the hot material strips (3,4) on the outlet roller path. And in the coil the material is pre-determined Above the body And around the edges on the material strip And on the other hand The shape of the flattening that was actually obtained. It is traced and compared with a predetermined shape of flattening. The difference is calculated from this. And determining parts that have a mechanical or physical effect (12,13,14,15,16,17,18) is used in a way that divergence is made. As little as possible Where the shape of the concentric flattening of the hot material band creates the desired flattening of the cold strip. After cooling of the strip material (3,4) 2. The method defined in claim 1 is characterized in addition to the pre-determination of the shape of the target flattening. Profile of the Diffuse target stress Or the target elongation of the strip material (3,4) across the correct width Preset And compare it with the stress distribution Or the actual elongation, which in this way the difference being calculated And set parts (12,13,14,15,16,17,18) is used in a manner that minimizes those differences 3. The method defined in claim 1 is characterized by that For the production of flat strips of material (3,4) in cold conditions, the shape of the flattening at The difference is predetermined for the hot strip (3,4) over the entire length of the strip 4. One of the methods defined in Claims 1 to 3 defines the characteristics that In the case of insufficient minimization of differentiation, the initial condition that is, is characteristic of the incoming material strip (3, 4) such as the profile of the strip material, the shape of the flatness. Or the temperature distribution of the material strips of the related extrusion 5. The methods set out in claim 1, are characterized by that For creating the shape of the flattening of different material strips At least the bend Of the working roller (13), the nominal angle of the PC press and the shift at CVC (12) is set to remain constant or change over the length of the strip.6.Methods as defined in Claims 1 to 5. Any one of these is characterized by that A description of the target value, the shape of the flattening, and the mathematical evaluation. By dividing the width of the strip into body and edge areas, it is adopted. 7. The method as defined in claims 1 and 6 is characterized by how the shape of the flatteness is described. With the polynomial function y * = A2X2 + A4X4 + A6X8 + AnXn, where y * denotes the coordinate. For elongation of the strip material The flattening of the band or the stress of the band and X represents the coordinate. 8. Method as defined in Claims 1 to 7, any one of which specifies that The shape of the inconsistency is described alternatively as a sequence of points (x, y) 9. One of the methods defined in claims 1 to 6 defines the characteristic that Target values for the flattening shape are described with polynomials. Meal Functions as defined in claim 7 or in sequence of points (xy) as defined in claim 8 1 0.Method as set out in claim 1 to Any one of these is characterized by that Positive and negative limits (For example Band Stress, Flatness, Band Elongation / Band Shrink) are determined around the target value. And set parts (12,13,14,15,16,17,18) is used in such a way that the stress distribution of the strip material, the flattening distribution, the elongation / contraction distribution of the strip material. Within the limit Or the excess of the limit has been reduced to a minimum of 1 1. Any of the methods set forth in Claims 1 through 10 that are characterized by that The limit for the shape of the permissible flattening is also described. Polynomial functions as defined in claim 7 or as a sequence of points (x-y) as defined in claim 8 1. 2. Any of the methods set forth in Claims 1 through 11 that are characterized by that The shape of the target inconsistency. Including the limit of flatness It can be summed up through strip widths (3, 4) for different presses. Or the passage of shape And 1 different level 3. The method set forth in Claims 1 through 12, one of which is characterized by that For the elongation / contraction of the strip material of a parabolic or super ordinate pattern over the width of the strip material, a designated part (12,13) is used. The elastic properties of the roller are set. These defining parts consist of a horizontal sliding device (12) for work rollers (10, 11) or a bending device (13). Or both of these devices simultaneously) 1 4. The procedure set out in Claims 1 through 13, any one of which is characterized as For avoiding waves of distortion At the hot strip (3,4) as well as in the cold state of the strip (3,4), the distribution of the rolling force is guaranteed as the rolling force. Was reduced to at least the last (8) platen and the force of the upper platen was placed The stream is raised by 1. 5. Any method set forth in Claims 1 to 14 that is characterized by that The cooling action of the rolled material strips (3, 4) on the path of the exit roller as well as in the curl and stretch / shrinkage of the strip material that occurs in this way was analyzed not only on the Only body But at the edge of the strip as well, and the length changes as if the case was detected. Or that is calculated is offset by the preset that Suitability of parts determines (12,13,14,15,16,17,18) at least in the last rolling stand (8) 1 6. Any of the methods set forth in Claims 1 to 15 that are characterized as Mechanically operated designated parts (12,13) were used and helped. Left by non-mechanical thermal designation components, for example, positive or negative (14,15,16,17,18) 1 7. The method set forth in Claims 1 through 16, one of which is characterized by that The shape of the measured irregularity was compared with the shape of the Flattening goals and contrasts are used for optimization purposes 1. 8. Any of the methods set forth in Claims 1 through 7 that are characterized by that The difference between the calculated or measured flattening shape and the target flatness shape was analyzed. And is divided into parabolic sections Including going to a section with a higher level And set parts (12,13,14,15,16,17,18) was used after that. According to the results of the operation