DE1093308B - Fine iron rolling mill for continuous, simultaneous rolling of several bar iron cores - Google Patents

Description

GERMAN

The invention relates to a fine iron mill for continuous, simultaneous rolling several bar iron cores with alternating horizontal and vertical scaffolding, between which the possibility of a loop formation is provided, as well as on the horizontal scaffolding Guides beginning or ending horizontally next to each other and on the vertical scaffolding vertically one above the other for each wire.

Until now, with fine iron rolling mills with alternating horizontal and Vertical stands with more than one bar wire only produce rolled goods for which the requirements are met in terms of dimensional accuracy are relatively low, since during the rolling, different wires develop for each wire Assert tension. These different tensions have their cause in the change in the roller pressure when the subsequent two to three roller bars are pierced, the temperature differences in the rolling stock, the uneven roll wear or the like. More. Balancing this out Causes has not been possible so far.

There are already continuous rolling mills known in which between the two or more Horizontal stands, existing groups of the rolling mill in question, guide troughs are provided are set up so that they sagging of the roll bar and thus largely tension-free Rolling should enable. With the horizontal-vertical arrangement of the roll stands in such When using these guides, roller mills can remove the freely sagging, Rolling stock sags of different, sometimes considerable, rolling stock slacks that move irregularly during rolling Sizes cause numerous disturbances, each of which leads to the closure of the entire road.

In the case of continuous rolling mills with alternating horizontal and vertical stands, attempts have already been made to carry out multi-core rolling in such a way that that for each rolling core its own guide troughs are provided without free sagging of the rolling stock and in this way the associated calibers of successive sets of rolls with one another get connected. This arrangement does not provide a possibility for this in the individual rolling stock cores Considerable tensile stresses occurring during rolling, which lead to the breaking of the rolling stock and to compensate for other additional stresses on buckling, etc., to be switched off or to keep it correspondingly small. The consequence of this is that none of them are sufficiently dimensionally stable End products and no trouble-free operation can be achieved with the further consequence that this

for continuous, simultaneous

Rolling several bar iron cores

Applicant:

Ironworks Oberhausen

Aktiengesellschaft,
Oberhausen (RhId.), Essener Str. 66

Dipl.-Ing. Ewald Brandenburg, Dipl.-Ing. Albert Pohle and Kurt Görlich, Oberhausen (RhId.),

have been named as inventors

Way of working has not found its way into practice.

The arrangement of a sling table between a vertical frame and a horizontal frame at single-core rolling is also known. There are also arrangements for single-core rollers that are between a vertical stand and a horizontal stand a guide for the rolling stock loop in the horizontal Provide level and a guide for the rolling stock loop in the vertical plane. As required vertical guide or horizontal guide is used.

According to the invention, the guides from the horizontal stands to the vertical stands as on known, downwardly bent, open-top guide channels formed and is attached to the guides from the vertical scaffolding to the horizontal scaffolding each one of its own, known per se, to one Continuous, open-top guide trough attached to a horizontal loop table connected. Through this the strength ratios of the rolling stock while avoiding detrimental stresses fair during rolling and in the case of two- or multi-core rolling the production of in tight Limits dimensionally stable rolled products.

The sling tables can be arranged in different ways, so the sling tables can after unload on the same side or on different sides.

009 649/169

The drawing schematically illustrates an embodiment of the invention. It shows

Fig. 1 a fine iron rolling mill in longitudinal view,

Fig. 2 is a top view of the fine iron rolling mill according to Fig. 1.

The fine iron mill shown as an embodiment is intended for two-wire rolling. It is equipped with the horizontal stands 1 and 2 and the vertical stand 3 lying between them.

Between the horizontal stand 1 and the vertical stand 3, a downwardly curved guide channel 4, 5 is arranged for each roll core, while a guide channel 6, 7 and a loop table 8, 9 are provided between the vertical stand 3 and the horizontal stand 2 for each roll core. The guide channels 6, 7 are open at the top and have no sag. In front of the entry into each guide channel 6, 7, a pivoting lever 11, which can be actuated by the compressed air cylinder 10 or in some other way, is attached to push the roller wire out of the guide channel. The sling tables are provided with a striking wall 12, which prevents the hurling rolling stock from getting stuck and forms a guide for the rolling stock to the caliber in the horizontal stand.

The operation of the device is as follows: The rolling stock cores emerging from the horizontal stand 1 13 and 14 pass through the guide channels 4 and 5 into the vertical framework 3 and at the exit of the caliber from this scaffold through the guide channels 6 and 7 into the horizontal scaffold 2. As soon as the horizontal scaffold 2 has detected the rolling strands, each of the rolling strands is activated by the relevant pivot lever 11 automatically pushed out of the guide channel belonging to it, so that afterwards a loop is formed can be done. The direction of rolling is indicated by arrow 15. The sling tables are included the embodiment example on the same page one above the other. The loop table 9 is indicated by dash-dotted lines.

Claims (3)

P A T E N T A N S P Ii Ü CII E: 1. Fine iron rolling mill for the continuous, simultaneous rolling of several bar iron cores with alternating horizontal and vertical stands, between which the possibility of loop formation is provided, as well as horizontally adjacent to the horizontal stands and the vertical stands starting or ending vertically one above the other for each wire, thereby characterized in that the guides from the horizontal stands (1) to the vertical stands (3) are designed as known, downwardly curved, open-top guide channels (4, 5) and are connected to the guides from the vertical stands (3) to the horizontal stands ( 2) a separate, known per se, is connected to a horizontal loop table (8, 9) attached to a guide channel (6, 7) with no sagging at the top. 2. fine iron rolling mill according to claim 1, characterized in that the loop tables (8, 9) unload to the same side. 3. fine iron mill according to claim 1, characterized in that the loop tables (8, 9) according to unload opposite sides. Considered publications: German Patent No. 946 616; German Auslegeschriften No. 1020593, 1008 236; Austrian Patent No. 190 479; U.S. Patent No. 2,603,989; "Iron Age" magazine, volume 175 (1955), issue 17, p.5; Journal "Stahl und Eisen", year 1957, issue 24 of November 28, p. D 12d; Publication »Fine Iron and Wire Rolling Mill Haspe« the company Schloemann AG., 1957, p. 19. 1 sheet of drawings © 009 649/169 11.60