摘要:
A hot-rolling stand including blocks arranged in the stand windows and having hydraulic piston cylinder units provided as bending devices which are able to transfer bending forces via guide elements onto the chocks of the working rolls. For each block a double-acting hydraulic piston cylinder unit is provided whose two ends are connected with the guide elements. The guide elements have guide that engage both sides of the free ends of noses of the working roll chocks so as to permit axial movement of the working rolls.
摘要:
Disclosed is a strip coiler for coiling a metal strip (20), comprising a coiling mandrel (21), pressing rollers (26) associated with the coiling mandrel (21), and adjustable deflection shells (28) for pressing the leading edge (24) of the metal strip (20) against the coiling mandrel (21). The disclosed strip coiler is characterized in that at least one of the deflection shells (28) has a tip (22) which is adjustable relative to the deflection shell (28).
摘要:
The invention relates to a device for lateral guidance of a rolled strip transported on a roller bed, particularly a hot rolled strip in front of a winding device (3), having parallel first and second side guides provided on both sides of the rolled strip, said side guides being movable toward or away from one another by adjusting means that are adjustable independently of one another; the invention is characterized in that a control device (14, 15, 16), to which operating forces and/or positions of the side guides and/or of the rolled strip can be fed as output values in the guidance of the rolled strip, is provided for damping the periodic deviation of the rolled strip, and in that the control device (14, 15, 16) controls the positions of the side guides and/or forces that the side guides exert on the rolled strip based on the measured output values.
摘要:
The invention relates to a process for hot rolling and for heat treatment of a strip (1) of steel. To make it possible to produce high-strength and very high-strength strips having satisfactory toughnesses more economically in a continuous production plant, the process provides the steps: a) heating of the slab to be rolled; b) rolling of the slab to the desired strip thickness; c) cooling of the strip (1), with the strip (1) having a temperature above ambient temperature (T0) after cooling; d) rolling up of the strip (1) to produce a coil (2); e) rolling off of the strip (1) from the coil (2); f) heating of the strip (1); g) cooling of the strip (1) and h) transport of the strip (1) to a further destination, with the strip (1) having a temperature above ambient temperature (T0) before heating as per step T).
摘要:
The invention relates to a method for producing a metal strip (1) by continuous casting. According to said method, a slab (3), preferably a thin slab, is initially cast in a casting machine (2), said slab being deviated from a vertical direction (V) into a horizontal direction (H), and in the direction of transport (F) of the slab (3) arranged behind the casting machine (2), the slab (3) is subjected to a milling operation in the milling machine (4), in which at least one surface of the slab (3), preferably two surfaces which are opposite to each other, are milled. In order to obtain a high economic viability and improved machining parameters when the strips are rolled, the slab (3) is milled as a first mechanical machining step after the slab (3) is deviated in the horizontal direction (H). The slab (3) is cast with a thickness (d) of at least 50 mm and the slab (3) is cast with a mass flow, which is the product of the casting speed and the slab thickness (v×d), of at least 350 m/min×mm. The invention also relates to a device for producing a metal strip by continuous casting.
摘要:
The invention is directed to a cylindrical milling cutter whose cylindrical body is provided with grooves which extend along its length at a distance from one another and at an angle to the longitudinal axis, and indexable cutting inserts, particularly coated carbide cutting inserts, are arranged in these grooves. For substantially preventing axial forces acting on the milling cutter or on the material to be machined, it is proposed either that the grooves and therefore the knife edges of the indexable cutting inserts are portionally oriented at different angles, these angles being selected such that the axial forces occurring in one portion during the machining process are neutralized or reduced in a defined manner by the axial forces occurring in the adjacent portion, or that the indexable cutting inserts are alternately arranged or oriented in the grooves in such a way that the axial force caused by one indexable cutting insert during the machining process is neutralized by the axial force caused by the adjacent indexable cutting insert.
摘要:
The invention relates to a device for producing a metal strip (1) by continuous casting, using a casting machine (2) in which a slab (3), preferably a thin slab, is cast. At least one milling machine (4) is arranged in the direction of transport (F) of the slab (3) behind the casting machine (2). At least one surface of the slab (3), preferably two surfaces which are opposite to each other, can be milled in said milling device. According to the invention, in order to keep the temperature loss to a minimum when the slab is machined and/or processed, at least one milling cutter (5, 6) of the milling machine (4), preferably the entire milling machine (4), is arranged in a displaceable machine in the direction (Q) perpendicular to the direction of transport (F) of the slab (3). The invention also relates to a method for producing a metal strip.
摘要:
The invention relates to a Steckel hot rolling mill comprising at least one reversing roll stand (1) as well as coilers (6,7) which are positioned upstream and downstream and present torque-controlled drives. The aim of the invention is to improve such a hot rolling mill in such a way that it optimally counteracts variations in tension and/or mass flow caused by changes in process parameters and allows for high quality hot rolling, especially of very thin hot rolled strips. To this end the invention provides for a looper (8,9) to be positioned between both the coilers (6,7) and the reversible roll stand (1), which supplies actual values for adjusting tension and mass flow.
摘要:
In a method and a device for descaling a metal strip, the metal strip is guided in a transport direction from a first roll stand to a second roll stand. A descaling device is positioned between the first and second roll stands. A descaling liquid is sprayed onto the metal strip from a working distance relative to the metal strip via the descaling device. The metal strip is moved at the location of the descaling device by a forced deflection amount in a direction transverse to the transport direction via an advancing element. A position of the descaling device is adjusted based on the forced deflection amount such that the working distance stays the same.
摘要:
A planarity measuring roller is constructed as a loop lifter which is adjustable relative to a rolled strip. The loop lifter includes a plurality of measuring zones located next to one another over the width of the rolled strip. Each measuring zone includes a rotatably mounted individual measuring roller which is pivotable in a clockwise direction and interacts with a force measuring device. Each measuring roller is mounted in a pivotable housing-like lever frame. The pivot point of each lever frame, the point of rotation of the corresponding measuring roller and a force introduction point of the force measuring device arranged underneath of the pivot point of the lever frame form an approximately isosceles triangle.