Polymer mills available with roll diameters of 100, 110, 150 and 200 mm. Roll heating is available in 3 ways, with our Standard 3-Zone or TRUE 3-Zone electric roll heating system, with Oil heating and cooling system, or with Electric roll heating and water cooling system. From manual versions to fully automatic hands-free computerized mills ...
Upgrading your mill with a state-of-the-art roller cooling system can cut operational costs, increase productivity and improve quality. Suitable for SDV, SDW and SDX mills, enhanced cooling and constant roll temperature improve productivity.
The first system, the laminar cooling system, delivers water in a uniform curtain across the width of the slab to lower the surface temperature. Additional systems use x-rays and optical sensors to measure the thickness, width, profile, flatness and surface quality of the slab. The roll …
Easy replacement of segment roll for maintenance Power cooling (Enhanced strip cooling system) Hot strip mills often reach their limits in terms of power and flexibility for production of advanced high strength steel grades (AHSS) such as API X80/X100, dual-phase, martensitic and complex-phase grades.
Combined experimental and numerical research has been conducted to investigate the roll cooling system used in steel rolling mills and its relationship to roll life. Roll cooling has been identified as a critical factor in the problems of excessive roll wear or spalling, which cause shortened roll life. A special laboratory apparatus resembling the cooling systems used in the steel mills has ...
roll cooling system and the subsequent improvements in product quality, productivity and reduced operation costs. Roll Cooling Study Phase 1 A typical roll cooling study would be carried out in two phases: In Phase 1, a site visit is the start during which mill data would be collected. Benchmarking Also included in Phase 1 would be the benchmarking
Systems and valves for selective roll cooling. The Lechler SELECTOSPRAY system can be operated in conjunction with any of the shape control systems currently available. The nozzle / valve zoning of the SELECTOSPAY system is matching the zoning of the shape roll. More Technical data (pdf, 208.26 KB) For additional products, please refer to ...
the roll diameter in particular areas. The roll profile is transferred to the material profile and the flatness quality is reduced. SELECTOSPRAY ® Roll Cooling System The Solution Symmetrical deviations of the roll barrel (i.e., the major profile) can be controlled by mechanical actuators, such as roll skewing, roll bending, and roll shifting ...
Mar 15, 2021· WCS - Wireless Control System. With the Wireless Tablet, valve tests can be performed directly on the rolling mill. This simplifies routine tests and maintenance work significantly: The control and visual inspection of the valve functions can be performed by one person alone. GRIP Engineering develops cooling systems for your rolling mills.
A programmable logic control system and electronically controlled roll cooling increase production reliability. The sys-tem is available with centrifugally cast rolls or alternatively with VIVA rolls. SDV. Economic batch size 300–1000 kg. The SDV is a powerful three-roll mill for large production batches. This system has centrifugally cast ...
your mill. Choose from headers and nozzles that use compressed air or air knife packages powered by energy-efficient regenerative blowers. Contact your local steel specialist for a no-charge consultation to see how we can assist with process optimization and product selection. 1 ROLL COOLING VeeJet® ® nozzles and headers 2 PICKLING AND RINSING
Nov 13, 2019· In addition, rolls are to face several abnormal rolling conditions which may arise due to the (i) fault of the mill operator, (ii) defective materials with internal defects entering the rolls, (iii) power failures, (iv) mechanical problems of material transportation to the rolls, and (v) problems in the water cooling systems.
An apparatus for cooling an upper work roll of a rolling mill stand and a strip of metal being rolled has a header to supply a coolant fluid to the work roll and a stripper with a wiper blade that contacts the surface of the work roll between the header and the strip of metal. A fluid cylinder and extension rod cooperate with the stripper to displace the wiper from contact with the upper roll ...
In a hot strip mill, the quality of the rolled products and the productivity of the mill depend on the efficien-cy of roll cooling to a great extent. To study the influence of the cooling system on roll performance, a good understanding of the thermal aspects of roll cooling is essential. Mathematical models to predict tempera-
The axial shifting system (push-push), the impingement jet cooling system, and the rectangular back-up saddle design, for instance, offer distinct economic advantages. The rolling mill stand houses all of the state-of-the-art flatness adjustment elements, like tilting, bending and axial shifting.
Cooling bed for Rolling Mill. Cooling bed is an very important equipment in steel rolling. It used to receiving, transmissing and cooling the rolled piece. After sizing or reducing, the temperature of pipe is generally above 700 °C. It must be cooled to below 150 °C for subsequent finishing process. Main parts Mechanical drive system
Dec 01, 2016· 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 ...
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Fabris Guiding Systems for rod and bar mills, including two, three and four roller entry guides, twisters, antiflutter 6-in. and 8-in., slitters, entry and delivery dummy pipe holders, delivery guides, friction guides, rest bars, flingers, sleeves, mill components, spares, and Fabris carbide roll cooling systems; patents for "DR" roller guide, sleeveless roll mounting system, and sizing stand.
Dec 13, 2013· WR cooling OFF Basic reason of roll cooling is to keep the temperature inside the rolls nearly const. during rolling. WR cooling is connected to 1.5 bar (DC3) system. 1 electro-pneumatic controlled valve and 1 flow transducer are installed for WR cooling system to adjust the water quantity for WR cooling. WR cooling off is done as there is no ...
A metal rolling mill coolant spraying system for minimizing formation of tight edges of rolled strip. The system comprises supplemental assemblies for spraying the work rolls adjacent to the strip edges, mounted for lateral adjustment controlled in response to signals from a computer for initial setup or continuous operation based on shape meter roll edge rotor signal feedback.
United States Controls Selective Roll Cooling and Heating System's proprietary valve design offers mill operators superior flow performance, wear resistant components and easy maintenance. Typically, these self-cleaning valves require no maintenance for at least five years and are constructed of high quality, stainless steel internal ...
May 15, 2001· A simple system like this requires specification of coolant flow to provide proper flushing and cooling of each production process, with the total flow requirement being equal to the sum of the individual requirements (see Figure 1). This calculation is important because the components used in coolant purification all are flow rate-specified.
Get details about our roll cooling solutions in cold rolling mills, including dovetail VeeJet nozzles designed for cooling efficiency.
The Dropsa air-oil lubrication system has5-Stand Tandem Cold Mill to lubricate the bearings and seals positioned inside the Working Roll / Intermediate Roll / Back-up Roll chocks. The function is achieved by using Dropsa's SMX progressive dividers, tailor-made splitter tubes, cutting-edge control panel and other components. A lubrication cycle of the system could be simplified as following:
cal screwdown system in addition to the hydraulic roll-gap adjustment system, so as to enable the roll gap to be opened extremely quickly during the rolling of ingots. The maximum roll force is 105 MN. A vertical edger at the exit end of the roughing stand ensures the precise setting of the plate width. The capacity of the mill is two million
Dec 03, 2015· The combination of roll gap cooling, roll gap lubrication and improved exit side cooling systems reduces the roll temperature. This results in a thinner oxide layer on the roll surface with less work roll peeling for consequence. Lubrication inside the roll gap minimizes friction, thereby enabling rolling force reduction of 20 % to 30 %.
cooling system. Problems of this kind can never really be calculated but they have a detrimental effect on all rolling schedules including stresses in the roll. As regards "abnormal" rolling conditions - which are more or less very "normal" for rolling mills - roll damage often occurs with consequences for the mill and the rolled product.