Customer case abouthot strip mill roll change

hot strip mill roll change

Quick Roll-Changing in Steel Strip Production

16/04/2012 Such hot-strip mills roll steel slabs up to 35 tons heavy into strips up to two meters wide and only one millimeter thick. The steel strip is still at temperatures of up to 600 degrees Celsius when coiling under tension between the pinch rolls. If the surface of a roll becomes damaged, the quality of the strip

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How does it work: hot-strip rolling mill YouTube

31/03/2015 ThyssenKrupp Steel Europe spent a quarter of a million euros on renovating its hot-strip rolling mill in Duisburg. The animation shows how it all works.

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Work Roll change in a Hot Rolling Mill ( especially in a

13/12/2013 In roll change the latches must be opened so that the work rolls (WR) can be removed from the mill stand. The top and bottom latches are driven by two (2) hydraulic cylinders. The entry- and exit side latches are driven simultaneously. • The open and close positions of the work roll carrier latch are controlled by limit switches.

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Rolling of steel in Hot Strip Mill IspatGuru

03/12/2015 The primary function of the conventional hot strip mill (HSM) is to reheat the semi-finished steel slabs (rolled or continuously cast) to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling up the lengthened steel sheet for its easy handling and transport.

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A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

Secondary scale on hot strip and the impact on wear is another issue. Stresses from Hertzian pressure in 4-high cold mill back up rolls were measured years ago, the results were never published, but of high interest also, maybe later. K. H. Schröder July 2003 K. H. Schröder: A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING MILL ROLLS File: SCHROEDER_ROLLS_010703.DOC.

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Rolling of hot strip and strip defects IspatGuru

14/01/2017 For rolling of hot strip, the slabs are heated initially at 1100 deg C to 1300 deg C. The temperature in the last finishing stand of the hot strip mill varies from 700 deg C to 900 deg C. It is always to be above the upper critical temperature to produce uniform equiaxed ferrite grains.

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Hot Strip Mill (HSM) process animation Primetals

29/04/2016 3D animation Highest performance for new and existing steel mills

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Products › Flat › QSP® Quality Strip Production technology

Mechanical properties estimator for hot rolled flat products. Q-FLOW+ . Advanced laminar cooling system for hot strip mills. FAST PINCH ROLL CHANGE. Innovative pinch roll design for quick roll changing. HS-COILING. High-speed semi-endless and endless shear and downcoilers. Q-SAMPLE. Sampling solutions for any strip thickness & width range up to API x120 steel grades . PALLET

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Progress in Sizing Press for Hot Strip Mill Line

In the past 20 years since the first installation, the installation of a slab-width sizing press at the exit of the heating furnace of a hot strip mill line by revamping the hot strip mill line or installing a new hot strip mill line has become a global trend, and it would not be an exaggeration to say that installing slab-width sizing presses in hot strip mill lines has become mainstream practice.

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Strip Mill Kloeckner Metals UK

52 rows Hot Rolled. Our extensive range of Hot-Rolled Strip Steels are designed to offer both

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Rolling of steel in Hot Strip Mill IspatGuru

03/12/2015 Hot strip mills in these days are either conventional hot strip mills or strip mills for rolling thin slabs. The primary function of the conventional hot strip mill (HSM) is to reheat the semi-finished steel slabs (rolled or continuously cast) to the rolling temperatures and then to roll them thinner and longer through a series of rolling mill stands driven by large motors and finally coiling

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Analysis of the change of roll thermal crown in 1750 mm

Studied the distributing of roll temperature and the change rule of thermal crown in 1 750 hot strip mill,the result of the test showed that the change of roll thermal crown was affected by the condition of roll cooling and equipmentthe roll thermal crown was obviously improved after altering the pipe and water nib of cooling equipment.From the rule of roll thermal crown changing with the

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Optimization of Roll Shifting Strategy of Alternately

KONG Xiang-wei, XU Jian-zhong, WANG Guo-dong, et al. Study of Work Roll Shift Method on Hot Strip Mill [J]. Iron and Steel, 2002, 37(Supplement): 618 (in Chinese). Google Scholar [4] SHAO Jian, HE An-rui, YANG Quan. Varying Shifting Stroke Strategy of Work Rolls in Hot Rolling [J]. Journal of University of Science and Technology Beijing, 2011, 33(1): 93 (in Chinese). Google Scholar [5] LI Wei

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Rolling of hot strip and strip defects IspatGuru

14/01/2017 Hot Rolling is employed for rolling of steel slabs to hot strips in hot strip mills. Like any other hot rolling operations, rolling of hot strip is also a plastic deformation of the material of the slab caused by compressive force applied through a set of rolls. The cross section of the slab is reduced by the hot rolling process. The material gets squeezed between a pair of rolls, as a result

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Simulation of thermal fatigue in hot strip mill work rolls

The surface deterioration of work rolls constitutes a significant constraint on the operation of hot mills, as the duration of rolling campaigns are greatly restricted by the surface condition of the rolls. Work roll changes account for a large proportion of downtime in the operation of hot strip mills, resulting in financial penalties for the mill operators in terms of lost production and

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Products › Flat › QSP® Quality Strip Production technology

Mechanical properties estimator for hot rolled flat products. Q-FLOW+ . Advanced laminar cooling system for hot strip mills. FAST PINCH ROLL CHANGE. Innovative pinch roll design for quick roll changing. HS-COILING. High-speed semi-endless and endless shear and downcoilers. Q-SAMPLE. Sampling solutions for any strip thickness & width range up to API x120 steel grades . PALLET

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A SURVEY OF THE LOOPER-TENSION CONTROL TECHNOLOGY IN HOT

change caused by roll gap movement. Another disturbance comes from the set–up mis-match. Before the strip arrives at the finishing mill, a supervisorycomputer calculates initial set– up values such as the roll gap and rolling speed for the stands to get required specifications. However, the mismatch between the real processed values

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(PDF) Characteristics of Rolling Mills with Roll Shifting

Currently, work roll shifting mill is the most effective mill for strip shape control [12,13] because it improves the strip crown accuracy and edge phenomenon, as well as permitting schedule free

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Rolling Process SlideShare

16/11/2017 Cold-rolling •The starting material for cold-rolled steel sheet is pickled hot-rolled breakdown coil from the continuous hot-strip mill. • The total reduction achieved by cold-rolling generally will vary from about 50 to 90%. • The reduction in each stand should be distributed uniformly without falling much below the maximum reduction for each pass. • Generally the lowest percentage

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Strip Mill Kloeckner Metals UK

Hot Rolled. Our extensive range of Hot-Rolled Strip Steels are designed to offer both standard and specialist performance requirements such as Forming, Bending, Deep Drawing, Laser Cutting and Welding. Our structural range includes Floor Plate for construction applications and we can also provide high carbon grades to meet demanding wear and

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Optimization of Roll Shifting Strategy of Alternately

KONG Xiang-wei, XU Jian-zhong, WANG Guo-dong, et al. Study of Work Roll Shift Method on Hot Strip Mill [J]. Iron and Steel, 2002, 37(Supplement): 618 (in Chinese). Google Scholar [4] SHAO Jian, HE An-rui, YANG Quan. Varying Shifting Stroke Strategy of Work Rolls in Hot Rolling [J]. Journal of University of Science and Technology Beijing, 2011, 33(1): 93 (in Chinese). Google Scholar [5] LI Wei

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Analysis of the change of roll thermal crown in 1750 mm

Studied the distributing of roll temperature and the change rule of thermal crown in 1 750 hot strip mill,the result of the test showed that the change of roll thermal crown was affected by the condition of roll cooling and equipmentthe roll thermal crown was obviously improved after altering the pipe and water nib of cooling equipment.From the rule of roll thermal crown changing with the

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Hot Strip Mill an overview ScienceDirect Topics

Work rolls in hot strip mills wear due to friction between the roll surface and hot strip. (Back-up rolls wear as well, but under pressure with elastic deformation, the friction is much less, except for the high work roll roughness in the last stand of a sheet rolling tandem cold mill). The wear is uneven from one end of the barrel to the other. A shining, dark oxide layer always covers the

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Hot & Cold Working and the Rolling Process

Endless Hot Strip Rolling Process . In conventional hot strip production, slabs of thickness of about 250mm are heated in a furnace and are reduced to 30 to 60mm in thickness after passing through the roughing mill, and then further reducing it to within a range of 0.8 to 25.4mm by rolling in the finishing mill. When the head and tail ends of the strip are finish-rolled, both ends run out to

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Danieli Wean United Flat Product Rolling Mills and Strip

Advanced laminar cooling system for hot strip mills. EXSTREAM . Cooling solutions for advanced material properties in plate mills. FAST PINCH ROLL CHANGE. Innovative pinch roll design for quick roll changing. POWERFUL DOWNCOILER. For strip thicknesses up to 25.4 mm and steel grades up to APIx100. HS-COILING. High-speed semi-endless and endless shear and downcoilers. Q-SAMPLE.

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Some aspects on lubrication and roll wear in rolling mills

strip grades were used. The obtained model is tested successfully in two other hot strip mills. Contradictory to the currently used on-line model, the new model takes the work roll flattening and back-up rolls contact area into consideration. Also the influence of strip- and work roll grades is included.

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(PDF) Characteristics of Rolling Mills with Roll Shifting

Currently, work roll shifting mill is the most effective mill for strip shape control [12,13] because it improves the strip crown accuracy and edge phenomenon, as well as permitting schedule free

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Products › Flat › DUE® A revolutionary concept for thin

Advanced laminar cooling system for hot strip mills. FAST PINCH ROLL CHANGE. Innovative pinch roll design for quick roll changing. HS-COILING. High-speed semi-endless and endless shear and downcoilers. Q-SAMPLE. Sampling solutions for any strip thickness & width range up to API x120 steel grades. PALLET-CONVEYOR . Pallet-type coil conveyor system for high-productivity plants. Long

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Roll changing device for rolling mill Hitachi, Ltd.

The change of rolls in this type of rolling mill has been hitherto achieved by means of a complicated roll changing device having roll changing rails for respective rolls and mounted in a housing, and delivery rails disposed at the front side of the mill at the same level as respective roll changing rails and in alignment with the latter. The rolls are exchanged between the rails inside and

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Strip Mill Kloeckner Metals UK

Hot Rolled. Our extensive range of Hot-Rolled Strip Steels are designed to offer both standard and specialist performance requirements such as Forming, Bending, Deep Drawing, Laser Cutting and Welding. Our structural range includes Floor Plate for construction applications and we can also provide high carbon grades to meet demanding wear and

get price

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