Device for increasing the temperature of elongate metallic rolled stock and finishing train for producing and/or working elongate metallic rolled stock

Abstract

An apparatus (1) for increasing the temperature of elongate metallic rolled stock (2), having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises driving and/or roller table roller elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along the longitudinal extension (9) of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), and wherein a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) and/or opposing lateral guide elements (60, 61) are arranged in each of the free spaces (10, 11, 12) in order to prevent the conveyed rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107).

Claims

1. An apparatus (1) for increasing a temperature of elongate metallic rolled stock (2), having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises roller table elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along a longitudinal extension of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), characterized in that a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is arranged in each of the free spaces (10, 11, 12) at least one above and below a conveyance plane (16) of the heating zone (8) in order to prevent the rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107), and in that the sliding deflector element (38) and at least one other deflector element (41) are arranged opposite the roller table roller elements (27, 28)in relation to the heating zone (8) as a deflector unit.

2. The apparatus (1) according to claim 1, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is positioned outside of one of the surfaces of the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) that face the rolled stock (2).

3. The apparatus (1) according to claim 1, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is positioned between one of the active or passive conveying elements (18) and one of the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107).

4. The apparatus (1) according to claim 1, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) comprises a deflector top section (42) which is fixed in relation to the conveyed rolled stock (2).

5. The apparatus (1) according to claim 1, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is positioned with its long side (55) aligned transversely to the longitudinal extension (9) of the heating zone (8), in the free space (10, 11, 12) between two immediately adjacent induction heating elements (4, 5, 6, 7; 104, 105, 106, 107).

6. The apparatus (1) according to claim 1, characterized in that a plurality of sliding deflector elements (34, 35, 36, 37, 38, 39, 40, 41, 73) are positioned extending over more than 60% of the heating zone width (56).

7. The apparatus (1) according to claim 1, characterized by a horizontal distance A.sub.Hori between the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) and an immediately adjacent induction heating element (4, 5, 6, 7; 104, 105, 106, 107), by an induction heating element distance A.sub.INDHori and by a sliding deflector element width B, where A.sub.Hori=(A.sub.INDHoriB)=(0 to 25%)A.sub.INDHori.

8. The apparatus (1) according to claim 1, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is positioned spaced less than 100 mm from a nearest induction heating element (4, 5, 6, 7; 104, 105, 106, 107).

9. The apparatus (1) according to claim 1, characterized by an induction heating element passage height H.sub.IND and by a vertical distance A.sub.VertA or A.sub.vertF between the sliding deflector element (35, 38, 41, 73) positioned above the conveyance plane (16) and a further sliding deflector element (34, 36, 37, 39, 40) positioned below the conveyance plane or a roller table element, wherein A.sub.VertA or A.sub.vertFH.sub.IND.

10. The apparatus (1) according to claim 1, characterized in that with an induction heating element passage height H.sub.IND of <200 mm the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is positioned in one of the free spaces (10, 11, 12).

11. The apparatus (1) according to claim 1, characterized by a horizontal distance A.sub.HoriS between a lateral guide element (60, 61) and an immediately adjacent induction heating element (4, 5, 6, 7; 104, 105, 106, 107), by an induction heating element passage width B.sub.IND and by a lateral guide passage width BF, wherein A.sub.HoriS=(B.sub.INDBF)=(0 to 25%)B.sub.IND.

12. The apparatus (1) according to claim 1, characterized in that the sliding deflector element and the at least one other deflector element are made of a temperature-resistant material and/or are internally cooled, wherein a coolant supply to one of thea cooled sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) comprises a hose connection.

13. The apparatus according to claim 6, characterized in that the sliding deflector elements (34, 35, 36, 37, 38, 39, 40, 41, 73) are positioned extending over 90% of the heating zone width (56).

14. The apparatus according to claim 8, characterized in that the sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41 and 73) is positioned spaced less than 40 mm from the nearest induction heating element (4, 5, 6, 7, 104, 105, 106, 107).

15. The apparatus according to claim 10, characterized in that with the induction heating element height H.sub.IND<80 mm, the sliding deflector element (34, 35, 36, 37, 38, 39,40, 41, 73) is positioned in one of free spaces (10, 11, 12).

16. The apparatus (1) according to claim 1, characterized in that the sliding deflector element is positioned above the conveyance plane (16) of the heating zone (8) and a further deflector element is positioned below conveyance plane (16) vertically opposite the sliding deflector element, forming therewith a deflector unit.

17. The apparatus according to claim 1, characterized in that the sliding deflector element (38) and at least one other deflector element (41) and the induction heating elements (4, 5, 6) are arranged alternating with one another along the heating zone (8).

18. The apparatus according claim 1, characterized by at least one of a deflector unit including the sliding deflector element (35) and a further deflector element (34) vertically opposing the sliding deflector element (35), and a lateral guide unit including two horizontally opposing guide elements (60, 61) forming jointly or separately at least partially a rolled stock intake unit.

19. A finishing train for producing and/or working elongate metallic rolled stock (2), comprising an apparatus (1) for increasing a temperature of the elongate metallic rolled stock and having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises roller table elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along a longitudinal extension (9) of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), wherein a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is arranged in each of the free spaces (10, 11, 12) at least one above and below a conveyance plane (16) of the heating zone (8) in order to prevent the rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7, 104, 105, 106, 107), and wherein the sliding deflector element (38) and at least one other deflector element (41) are arranged opposite the roller table roller elements (27, 28)in relation to the heating zone (8)as a deflector unit.

20. An apparatus (1) for increasing a temperature of elongate metallic rolled stock (2), having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises roller table elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along a longitudinal extension (9) of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), characterized in that a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is arranged in each of the free spaces (10, 11, 12) at least one above and below a conveyance plane (16) of the heating zone (8) in order to prevent the rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107), and in that the sliding deflector element (38) and at least one other deflector element (41) are positioned so as to be vertically adjustable alone or in a frame, together with respective induction heating elements (5, 6).

21. A finishing train for producing and/or working elongate metallic rolled stock (2), comprising an apparatus (1) for increasing a temperature of the elongate metallic rolled stock and having a heating unit (3) which comprises induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) for heating the rolled stock (2) along a heating zone (8), and having a conveying device (15) which comprises roller table elements (27, 28) as active or passive conveying elements (18) for moving the rolled stock (2) along a longitudinal extension (9) of the heating zone (8), wherein the induction heating elements (4, 5, 6, 7; 104, 105, 106, 107) are arranged spaced apart from one another in the longitudinal extension (9) of the heating zone (8) in each case by a free space (10, 11, 12), wherein a sliding deflector element (34, 35, 36, 37, 38, 39, 40, 41, 73) is arranged in each of the free spaces (10, 11, 12) at least one above and below a conveyance plane (16) of the heating zone (8) in order to prevent the rolled stock (2) from coming into contact with the induction heating elements (4, 5, 6, 7, 104, 105, 106, 107), and wherein the sliding deflector element (38) and at least one other deflector element (41) are positioned so as to be vertically adjustable alone or in a frame, together with respective induction heating elements (5, 6).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The drawings show:

(2) FIG. 1 a schematic side view of a temperature increasing apparatus having integral induction heating elements arranged successively along a heating zone and closed in the form of a ring, and having sliding deflector elements arranged therebetween;

(3) FIG. 2 a schematic cross-sectional view of the apparatus of FIG. 1 with additionally mounted lateral guide elements;

(4) FIG. 3 a schematic side view of the temperature increasing apparatus of FIGS. 1 and 2 with induction heating elements arranged successively along a heating zone and split into two, and therefore alternative (current feedback within the respective inductor halves);

(5) FIG. 4 a schematic cross-sectional view of the apparatus of FIG. 3; and

(6) FIG. 5 a schematic plan view of an example of a possible heating zone in conjunction with the temperature increase apparatus of FIGS. 1 to 4, having induction heating elements arranged successively, and having sliding deflector elements and lateral guide elements arranged therebetween.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

(7) The apparatus 1, shown in FIGS. 1 and 2, for increasing the temperature of elongate metallic rolled stock 2 has a heating unit 3 which comprises a total of four induction heating elements 4, 5, 6 and 7. The four induction heating elements 4 to 7 are arranged successively along a heating zone 8 of heating unit 3, in other words along the longitudinal extension 9 of heating zone 8, so that together the four induction heating elements 4, 5, 6 and 7 form a longitudinal field induction heating unit (not labeled separately here). The four induction heating elements 4, 5, 6 and 7 are arranged relative to one another in apparatus 1 such that they are spaced apart from one another along heating zone 8 by a horizontal distance A.sub.INDHori, producing a corresponding forward free space 10 between the two induction heating elements 4 and 5, a corresponding center free space 11 between the two induction heating elements 5 and 6, and finally a corresponding rear free space 12 between the two induction heating elements 6 and 7.

(8) Apparatus 1 further comprises a conveying device 15, by means of which the elongate metallic rolled stock 2 is moved in a horizontally oriented conveyance plane 16 through heating zone 8 in direction of conveyance 17, and therefore past induction heating elements 4 to 7. In this embodiment example, conveying device 15 is equipped with both active and passive conveying elements 18 (numbered only by way of example).

(9) As active conveying elements 18 in the present case, driving roller elements 19 and 20 of a forward drive unit 21 are provided in intake region 22 of heating zone 8, and in output region 23 of heating zone 8, a lower drive roller element 24 and a hold-down roller element 25 of a rear drive unit 26 are provided.

(10) As passive conveying elements 18, two roller table roller elements 27 and 28 are provided below conveyance plane 16.

(11) The four induction heating elements 4 to 7 in this embodiment example are each embodied as having a closed design, that is, with a rectangular ring-shaped housing part 30 (see in particular FIG. 2) with a fixed rolled stock passage opening 31. This means that an upper part 32 and a lower part 33 of each induction heating element 4, 5, 6 and 7 are fixedly disposed relative to one another and are thus rigidly connected to one another.

(12) In order for the potentially bulging rolled stock 2 that is moved in direction of conveyance 17 through heating zone 8 to be conveyed reliably without contact through the fixed rolled stock passage openings 31 of four induction heating elements 4, 5, 6 and 7 without coming into mechanical contact with even the upper and lower parts 32 and 33 of the four induction heating elements 4, 5, 6 and 7, apparatus 1 has a plurality of sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41 arranged fixedly in relation to the conveyed rolled stock 2, and disposed in free spaces 10 and 11 between induction heating elements 4, 5 and 6 and cumulatively or alternatively between the active or passive conveying elements 18 and said induction heating elements 4, 5 and 6.

(13) The upper and lower sliding deflector elements 34 and 35, and 36 or 37 and 38, and 39 or 40 and 41, respectively arranged opposite one another vertically, in each case make up one deflector unit (not specifically labeled).

(14) Sliding deflector elements 34, 35, 36, 37, 38, 39, 40, 41 of the respective deflector units and induction heating elements 4, 5, 6, 7 are therefore arranged alternating with one another or alternatingly in succession along heating zone 8.

(15) Sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41 are each characterized by a panel-like deflector top section 42 (numbered only by way of example), located closer than induction heating elements 4 to 7 to conveyance plane 16. This alone reduces the risk that rolled stock 2 will come into contact with said induction heating elements 4 to 7.

(16) The respective panel-like deflector top section 42 of sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41 has a sloped side 43 (also labeled merely by way of example) having an inclined run-in surface 44, which is oriented counter to direction of conveyance 17.

(17) Sloped side 43 and conveyance plane 16 ideally form an angle of more than 5 or more than 10, for example. This means that inclined run-in surface 44 and conveyance plane 16 extend at an angle relative to one another rather than parallel to one another.

(18) Thus at least two vertically opposing sliding deflector elements 34 and 35, and 36 and 38, and 39 and 41, along with their deflector top sections 42, always form a funnel-shaped intake region 45 (forward deflector unit), 46 (center deflector unit) and 47 (rear deflector unit), so that the conveyed rolled stock 2 can be advantageously deflected by the sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41, which are equipped with sloped slides 43, as it is being moved along heating zone 8 in direction of conveyance 17.

(19) Rolled stock 2 being moved in direction of conveyance 17 is prevented from becoming jammed or snagged on an edge 48 of the sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41 that faces conveyance plane 16 by the fact that at least a leading edge region 49 of sloped side 43 is set back in vertical direction 50 behind induction heating elements 4, 5, 6 or 7 or is at least at the same level as an inner side 51, facing conveyance plane 16, of one of induction heating elements 4, 5, 6 and 7.

(20) In other words, this means that this edge 48, facing conveyance plane 16, of each of sliding deflector elements 34 to 41, is located at a greater distance from conveyance plane 16 than the respective inner side 51 of induction heating elements 4, 5, 6 and 7.

(21) This reduces the risk of rolled stock 2 becoming further curved or bent thus forming a loop or the like within heating zone 8 as a result of mechanical contact with one of sliding deflector elements 34, 35, 36, 37, 38, 39, 40 or 41.

(22) As is particularly clear from the illustration of FIG. 2, each of sliding deflector elements 34, 35, 36, 37, 38, 39, 40 and 41 extend with their long side 55 oriented transversely to longitudinal extension 9 of heating zone 8.

(23) In this case, each sliding deflector element 34, 35, 36, 37, 38, 39, 40 or 41 extends over nearly the entire heating zone width 56 of apparatus 1, so that transversely to longitudinal extension 9 of heating zone 8, a highly effective and operatively reliable two-dimensional guidance of rolled stock 2 is ensured.

(24) In this embodiment, sliding deflector elements 34, 35, 36, 37, 38, 39, 40, 41 or at least the respective deflector top sections 42 thereof are designed as liquid cooled. This is illustrated by coolant lines 57, 58 and 59, shown and labeled by way of example.

(25) Apparatus 1 is further characterized by a horizontal distance A.sub.Hori (indicated by way of example) between sliding deflector elements 34, 35, 36, 37, 38, 39, 40 or 41 and one of the immediately adjacent induction heating elements 4, 5, 6, 7, by an induction heating element distance A.sub.INDHori and by a sliding deflector element width B, in the following relationship:

(26) A.sub.Hori=(A.sub.INDHoriB)=(0 to 25%)A.sub.INDHori. In this embodiment, A.sub.Hori measures less than 40 mm.

(27) Apparatus 1 is further characterized by an induction heating element passage height H.sub.IND and by a vertical distance A.sub.VertA between an upper sliding deflector element 35 or 38 or 41 and a lower sliding deflector element 34, or 36 or 37, or 39 or 40, or by a further vertical distance A.sub.vertF between an upper sliding deflector element 38 or 41 and one of the lower conveying elements 27 and 28, with A.sub.VertA or A.sub.vertFH.sub.IND. In this embodiment, H.sub.IND measures less than 80 mm.

(28) Not only can a collision-free vertical guidance of rolled stock 2 with respect to induction heating elements 4 to 7 be ensured, but also a lateral horizontal guidance, since in addition to the above-described sliding deflector elements 34, 35, 36, 37 38, 39, 40, 41 arranged above and below conveyance plane 16, apparatus 1 also has lateral guide elements 60 and 61 (labeled here by way of example), arranged within the free spaces 10, 11 or 12 between two immediately adjacent induction heating elements 4 and 5 or 5 and 6, as is particularly clear from the illustration of FIG. 5.

(29) Two lateral guide elements 60 and 61 directly opposite one another together form a lateral guide unit, and a plurality of lateral guide units that comprise horizontally opposing lateral guide elements 60 and 61 form a width restricting device along longitudinal extension 9 of heating zone 8.

(30) The two lateral guide elements 60, 61 are aligned with their respective longitudinal side 63 (see FIG. 5) along longitudinal extension 9 of heating zone 8, with the lateral guide elements 60 and 61 being arranged with their longitudinal side 63 completely within the respective free space 10, 11 or 12 between the induction heating elements 4, 5, 6 and 7. Lateral guide elements 60 and 61 also have a lateral slope 64 with an inclined run-in surface 65, the leading region 66 of which is set back in horizontal direction 67 from induction heating elements 4, 5, 6 and 7 or is at least at the same level as a side 68 of one of induction heating elements 4, 5, 6 and 7 that faces heating zone 8.

(31) This results in a total of three rolled stock intake funnels (not explicitly numbered), each of which is formed by a deflector unit comprising at least two vertically opposing sliding deflector elements 34 and 35 (forward rolled stock intake funnel), or 36 and 38 (center rolled stock intake funnel), or 39 and 41 (rear rolled stock intake funnel), combined with a lateral guide unit comprising two horizontally opposing lateral guide elements 60, 61.

(32) In any case, apparatus 1 is characterized by a horizontal distance A.sub.HoriS between lateral guide element 60 or 61 and an immediately adjacent induction heating element 4, 5, 6 or 7, by an induction heating element passage width B.sub.IND and by a lateral guide element passage width B.sub.F, in the following relationship to one another: A.sub.HoriS=(B.sub.INDB.sub.F)=(0 to 25%)B.sub.IND.

(33) The two lateral guide elements 60 and 61 each define an effective usable heating zone width B.sub.eff, which is smaller than the inside dimension B.sub.IND of induction heating elements 4 to 7, as shown by the illustration of FIG. 5.

(34) Since the induction heating element passage height H.sub.IND is fixedly defined particularly in this embodiment example and cannot be adjusted, apparatus 1 is still equipped with a conventional leveler 70 comprising five leveling rolls 71 (labeled only by way of example), which is positioned upstream of the actual heating zone 8. By means of leveler 70, the elongate metallic rolled stock 2 is leveled in a known manner before it reaches forward drive unit 21.

(35) A second embodiment is shown in FIGS. 3 and 4; in the following, only those features by which this second embodiment example differs from the first embodiment example (cf. FIGS. 1 and 2) will be described.

(36) Alternatively, in the apparatus 1 shown in FIGS. 3 and 4 a leveler 70 of this type can be readily dispensed with if heating unit 3 is equipped with other induction heating elements 104, 105, 106 and 107 of an open design. This means that each of induction heating elements 104, 105, 106 and 107 has an upper part 32 and a lower part 33, which can be displaced relative to one another such that the induction heating element passage height H.sub.IND can be variably adjusted.

(37) For this purpose, induction heating elements 4 to 7 are mounted in a frame (not shown here) of apparatus 1, so that their upper and lower parts 32 and 33 can also independently execute vertical movements according to vertical arrow 72 (labeled only by way of example).

(38) In addition, at least the upper sliding deflector elements 35, 38, 41 and 73 can also independently execute vertical movements according to additional vertical arrow 74 (labeled only by way of example), so that the height of these sliding deflector elements can be adjusted in relation to lower sliding deflector elements 34, 36, 37, 39 and 40 and in relation to roller table roller elements 27 and 28. Induction heating elements 104 to 107 can be moved independently of one another laterally in the direction of arrow 75, and upper sliding deflector elements 35, 38, 41 and 73 can be moved independently of one another laterally in the direction of arrow 76.

(39) It should be explicitly noted that the features of the solutions described above and in the claims and/or figures, where appropriate, may be combined in order to cumulatively implement or achieve the aforementioned features, effects and advantages.

(40) It is understood that the above-described embodiment examples are merely initial embodiments of the apparatus according to the invention. The implementation of the invention is not limited to these embodiments.

LIST OF REFERENCE SIGNS

(41) 1 apparatus 2 rolled stock 3 heating unit 4 first induction heating element 5 second induction heating element 6 third induction heating element 7 fourth induction heating element 8 heating zone 9 longitudinal extension 10 forward free space 11 center free space 12 rear free space 15 conveying device 16 conveyance plane 17 conveyance direction 18 active or passive conveying elements 19 lower driving roller element 20 upper driving roller element 21 front drive unit 22 intake region 23 output region 24 lower rear driving roller element or roller table roller element 25 hold-down roller element 26 rear drive unit 27 front roller table roller element 28 rear roller table roller element 30 rectangular ring-shaped housing part 31 fixed rolled stock passage opening 32 lower part 33 upper part 34 first sliding deflector element 35 second sliding deflector element 36 third sliding deflector element 37 fourth sliding deflector element 38 fifth sliding deflector element 39 sixth sliding deflector element 40 seventh sliding deflector element 41 eighth sliding deflector element 42 deflector top section 43 sloped side 44 inclined run-in surface 45 forward funnel-shaped intake region 46 center funnel-shaped intake region 47 rear funnel-shaped intake region 48 edge 49 initial region 50 vertical direction 51 inner side 55 long side 56 heating zone width 57 first coolant line 58 second coolant line 59 additional coolant line 60 left lateral guide element 61 right lateral guide element 63 longitudinal side 64 lateral slope 65 lateral inclined run-in surface 66 leading region 67 horizontal direction 68 side 70 leveler 71 leveling rolls 72 vertical arrow 73 ninth sliding deflector element 74 additional vertical arrow 75 arrow direction 76 arrow direction 104 alternative first induction heating element 105 alternative second induction heating element 106 alternative third induction heating element 107 alternative fourth induction heating element A.sub.Hori horizontal distance A.sub.INDHori induction heating element distance B deflector element width A.sub.VertA vertical distance upper deflector element/lower deflector element A.sub.vertF additional vertical distance deflector element/conveying element H.sub.IND induction heating element passage height A.sub.HoriS horizontal distance B.sub.F lateral guide element passage width V ratio h rolled stock thickness B.sub.eff strip width B.sub.IND induction heating element passage width