Abstract:
In a rolling-mill installation for the continuous production of fine steel includes a roughing block, a finishing block arranged on the rolling line of and after the roughing block, a water cooling section arranged after the finishing block and on the rolling line and a laying unit arranged downstream. In order optionally to be able to carry out rolling processes in accordance with conventional rolling or thermomechanical rolling, the finishing block arranged on the rolling line of the roughing block can be moved into a rolling position at a distance from the rolling line of the roughing block and back again. A rolled-material diverter is arranged downstream of the water cooling section by which the rolled material can optionally be routed on the one hand to a laying unit and on the other hand, via a soaking section, to the finishing block which has been moved at a distance from the rolling line of the roughing block.
Abstract:
A compact rolling mill for rolling sections includes rolling stands such as universal rolling stands and two-high rolling stands arranged along several rolling lines. Provided in the rolling lines are longitudinal conveyors for transporting the rolling stock along these rolling lines and cross conveyors for transporting the rolling stock between the rolling lines. At least two universal rolling stands are combined with one two-high edging stand to define a universal tandem compact group which together with further universal stands and two-high rolling stands may be displaced from one rolling position to another rolling position in a same rolling line or in a different rolling line. The drive unit is directly coupled to the stands along the outermost rolling line while the other remaining stands are indirectly connected to the drive unit transversely across the other rolling lines via other rolling stands.
Abstract:
A compact rolling mill for rolling sections includes rolling stands such as universal rolling stands and two-high rolling stands arranged along several rolling lines. Provided in the rolling lines are longitudinal conveyors for transporting the rolling stock along these rolling lines and cross conveyors for transporting the rolling stock between the rolling lines. At least two universal rolling stands are combined with one two-high edging stand to define a universal tandem compact group which together with further universal stands and two-high rolling stands may be displaced from one rolling position to another rolling position in a same rolling line or in a different rolling line. The drive unit is directly coupled to the stands along the outermost rolling line while the other remaining stands are indirectly connected to the drive unit transversely across the other rolling lines via other rolling stands.
Abstract:
A hot strip mill having a final reducing stand and runout cooling means downstream of the reducing stand includes an incubator capable of coiling and decoiling the hot strip. The incubator is located intermediate the runout cooling means. In a preferred form the final reducing stand is a hot reversing mill. A second incubator and/or a temper mill and/or a slitter may be positioned downstream of the first incubator. The method of rolling includes isothermally treating the strip within a predetermined time and temperature range in the incubator prior to subsequent processing. The subsequent processing may include any one or more of the following: further deformation by cold rolling, temper rolling or cooling at a desired heat loss rate.
Abstract:
The invention relates to a thermomechanical treatment method for producing thick plate (1) from a starting material in order to increase the toughness, in particular the low-temperature toughness, of the thick plate (1), wherein the thick plate (1) is heated, is partially and finally shaped by rolling, and is cooled down at an accelerated rate compared to a cool-down at ambient temperature, wherein the thick plate (1), which is heated to above the Ac3 temperature for partial shaping, is cooled down at an accelerated rate after the thick plate has been finally shaped. In order to achieve advantageous properties of the thick plate, the thick plate (1) is cooled down to below the Ar3 temperature at an accelerated rate between the partial shaping and the final shaping and then is inductively heated to above the Ac3 temperature.
Abstract:
Die Erfindung betrifft einen Rollgang (1, 1´) zum Transport eines Walzguts (5, 5´) in einer Walzstrasse, wobei der Rollgang (1, 1´) zumindest zwei über Umrichter (2a, 2b) betriebene Antriebssegmente aufweist. Dabei ist zumindest ein Teilsegment (c) des Rollgangs (1, 1´) mittels einer Umschalteinheit (3) an einen ersten Umrichter (2a) und/oder einen zweiten Umrichter (2b) schaltbar. Dadurch wird gegenüber bekannten Lösungen bei gleichbleibender Anzahl an Umrichtern eine Flexibilisierung der Walzstrasse bewirkt.
Abstract:
Apparatus for the rolling and heat treatment of elongated material product of relatively small cross section, such as rods and bars, is described in which the elements required for the conduct of a variety of heat treatments are arranged in in-line disposition whereby any of several heat treatment procedures can be performed on the product without need for transferring the product to remotely located heat treatment facilities. The methods of performing various heat treatments through use of the disclosed apparatus are also described.
Abstract:
PROBLEM TO BE SOLVED: To provide an improved modular rolling mill capable of producing articles of various lengths in spite of a single rolling mill and also, easily performing rolling under heat treatment at a low temperature between rolling units. SOLUTION: Rolling units 10a, 10b and 10c, especially, work rolls 14 and 16 of the rolling units progressively reduce the cross sectional area of an article received along a mill path line P, and send out the article. Gear units 46a, 46b and 46c connected to each rolling unit at the corresponding stage are mechanically connected to a common driven line shaft 36 via main bevel gear pair 44. The ratio of the first bevel gear set 44 at each stage is established to progressively increase from the first to the last stage to accommodate the increase in speed of the article accompanying the passage through rolling units. The gear ratio of a sub bevel gear set 54 of a last gear unit 46c is established to be the same as the gear ratio of the main bevel gear set 44 of an intermediate gear unit 46b. The line shaft 36 is mechanically connected to the last gear unit 46c by the one or the other of the bevel gear sets 44 and 54. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
후판(1)의 인성, 특히 저온 인성을 증대시키기 위해 1차 재료로 이루어진 후판(1)의 제조를 위한 열기계적 처리 방법이 설명되되, 상기 방법에서 후판(1)은 가열되고, 압연에 의해 부분 변형 및 엔드 변형되고, 주변 온도에서의 냉각에 비해 가속화 냉각되고, 이 때 부분 변형을 위해 Ac3 초과 온도로 가열된 후판(1)은 상기 후판의 엔드 변형 이후에 가속화 냉각된다. 후판의 유리한 특성을 얻기 위해, 후판(1)을 부분 변형과 엔드 변형 사이에 가속화되어 Ar3 미만 온도로 냉각하고, 이어서 유도적으로 Ac3 초과 온도로 가열하는 것이 제안된다.