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Fig. 8 shows the header and nozzle configurations for case 1. The work roll cooling system includes two headers at the entry side and two headers at exit of work
Improper work roll cooling can adversely affect the profile and shape of the rolled material. The issue of work roll cooling and their service life has been dealt with by
Operation of 950/800/850 mill at 'Nosta' company is considered. The rolling mill produces sections with diameters from 90 mm to 200 mm. Traditional technology
mastered workroll cooling can avoid or delayed the roll degradation. To assess the workroll lifetime or to optimize its efficiency, different ways of modelling are
IMPROVEMENT OF THE WORK ROLL PERFORMANCE ON 2050 MM HOT STRIP MILL AT ISCOR VANDERBIJLPARK. JP. Breyer, R.J. Skoczynski, G.
An improvement in the watercooling regimes made it possible to increase the durability of the rolls on the 700 × 1300 strip mill at the Moscow Nonferrous Metals
General Aspects of Roll Cooling for Hot and Cold Rolling Mills
Achenbach offers the following types of hot rolling mills: Singlestand reversing hot rolling mills for smaller strip production volumes and two and fourhigh sheet production; Hot
A Cold Rolling Mill rolls, in subsequent short passes(due to the relative thick material), coiled strip from a thickness of up to 8 mm (coming from Hot Rolling Mill) down to 0.2 mm; the mill is designed with
You've already forked mill 0 Code Issues Pull Requests Packages Projects Releases Wiki Activity You can not select more than 25 topics Topics must start with a letter or number,
Rolls are key components in hot strip mill. Roll wear and fatigue are inevitable phenomena during hotrolling process. Finite element (FE) analysis shows that roll profiles, especially work roll wear profile, have significant effects on contact stress distributions. Longterm effect of huge contact stress peaks in roll sides is the main factor
Roll cooling: General aspects of roll cooling for hot & cold rolling mills (copy 2) Contribution paper 06/2010 David Tucker Read now (pdf, 839 KB) Roll cooling: Flatness and profile the problems that can exist in the design of the spray actuators Contribution paper for The Institute of Materials, Minerals and Mining, Achieving Profile
That ensures excellent strip surface quality and longerlasting work rolls under the required roughness conditions. The brushes oscillate across the work roll barrel and guarantee uniform cleaning of the roll surface. Due to a special lowvibration design, our work roll brushes achieve an excellent cleaning effect.
The roll mill is the simplest batch mixing equipment. The principal design consists of two horizontal rolls, usually of equal size, arranged side by side and rotating toward each other at different speeds. The ratio of the peripheral speeds of the rolls, known as friction ratio, ranges from 1 to 2 but is usually around 1.2.
Share and Cite: Wu, Y. () Designing of Hot Strip Rolling Mill Control System. World Journal of Engineering and Technology, 4, 413417. doi: 10.4236/wjet..43040 . Received 7 July ; accepted 2 August
Keywords: cold rolling mill, work roll and backup roll chock, mill housing, 3D modeling 1. Introduction Rolling mill chocks are the maximum stressed bearing component in a manufactured item, and so are most liable to consistent the financial losses incurred as a result of chock failure will be far greater than the actual value of the chock.
You've already forked mill 0 Code Issues Pull Requests Packages Projects Releases Wiki Activity You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('') and can be up to 35 characters long. master. Branches mill / Fruitful internal cooling hot de.
1. Opensurface or closedloop heat exchangers. These are used to lower coolant temperatures to proper levels if the process generates a lot of heat. Heat exchangers are used quite commonly with new mills, because maintaining coolants at proper temperatures improves their consistency and extends tool life. 2.
A Cold Rolling Mill rolls, in subsequent short passes(due to the relative thick material), coiled strip from a thickness of up to 8 mm (coming from Hot Rolling Mill) down to 0.2 mm; the mill is designed with
1. Two High Rolling Mills. It contains two heavy rolls fixed one over the other. The rolls are supported in bearing housed in sturdy upright frames (called stands) which are grouted to the rolling mill floor.
Ye X (1990) Thermal crown development in hot strip mill work rolls and the role of spray cooling. Master Dissertation. The University of British Columbia, Vancouver Canada. Ryu JH, Kwon O, Lee PJ, Kim YM (1992) Evaluation of the finishing roll surface deterioration at hot strip mill. ISIJ Int 32(11):1221–1223
Thus, this paper presents the effects of various work roll contours designed for (1) the 6th and 7th stand of a 4high hot tandem rolling mill; (2) single stand 6high reversing cold mill; (3) 1st to 3rd stands of a 6high tandem cold mill. Results show that the NGOS strip profile hit rate of 5 micronmeters is increased by the implementations
mum workroll shifting position and the maximum shifting distance between two consecutive passes (Figures 4a, b & c). DYNAMIC WORKROLL COOLING In addition to other targets, VAI's solution for workroll cooling in hotstrip mills focuses on the improvement of strip quality through enhanced shape control. The adjustment of specific
effective work roll cooling system can slow down the chance of wear and tear and keep the operation cost low. II.LITERATURE REVIEWS Studies on hot strip process involve solving heat transfer equations that lead to process simulation. The geometry of water sprays on workroll cooling system in hot strip mill has
CNP® roll shift positions and work roll bending forces (2) Learning function for the strip crown and flatness model (3) Function to predict thermal crown and wear crown 3.1 Setup models 3.1.1 Setup model for finishing mill in hot strip mill Figure 2 shows the
Slmulatlon of work roll thermal c。ndltlona In I continuous hot strip ·m111 The Coolflex model is employed to simulate the roll thermal conditions on the top work rolls of a 6stand hot strip mill. The aηangement of work roll cooling headers for the work rolls of the .
The roll chocks are broadly categorized into 4 types which is shown in fig 3Top Back up Roll Chock 1. Top Work Roll Chock 2. Bottom Work Roll Chock 3. Bottom Back Up Roll Chock Figure [3] Roll chocks Figure [2] Four high stand of reversing cold mill 4. Design of chocks The housing of a work roll or backup roll bearing is known as chock.
Share and Cite: Wu, Y. () Designing of Hot Strip Rolling Mill Control System. World Journal of Engineering and Technology, 4, 413417. doi: 10.4236/wjet..43040 . Received 7 July ; accepted 2 August
A Cold Rolling Mill rolls, in subsequent short passes(due to the relative thick material), coiled strip from a thickness of up to 8 mm (coming from Hot Rolling Mill) down to 0.2 mm; the mill is designed with
1. Opensurface or closedloop heat exchangers. These are used to lower coolant temperatures to proper levels if the process generates a lot of heat. Heat exchangers are used quite commonly with new mills, because maintaining coolants at proper temperatures improves their consistency and extends tool life. 2.
