
	Where results make sense

Topic: Hot Rolling

Related Topics

Black Metal Ist Krieg

Absu

Mode 7

Bosnian Civil War

In the News (Mon 21 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Hot rolling - Wikipedia, the free encyclopedia
		Hot rolling is a metallurgical process in which the metal is passed through a pair of rolls and the temperature of the metal is above its recrystallization temperature, as opposed to cold rolling, which takes place below it.
		Hot rolling is mainly used to produce sheet metal, or simple cross sections from billets.
		Hot rolling is primarily concerned with manipulating material shape and geometry rather than mechanical properties; This is achieved by heating a component or material to its upper critical temperature and then applying controlled load which forms the material to a desired specification or size.
	en.wikipedia.org /wiki/Hot_rolling (340 words)

	Rolling mill - Wikipedia, the free encyclopedia
		A rolling mill is a machine or factory for shaping metal by passing it between rollers.
		Rolling mills are often incorporated into integrated steelworks, but also exist as separate plants and be used for other metals, and other materials.
		By designing the rolls appropriately, it is possible to obtain iron or steel with various cross-sections, including I-shaped girders and railway rails.
	en.wikipedia.org /wiki/Rolling_mill (191 words)

	MSECRC/materials in everyday life/automobile/super steel/Hot Rolling
		The process of hot rolling takes a 9" slab and rolls it into a 3,500 foot coil of hot rolled sheet steel.
		In just four minutes, the 9" slab is rolled into a coil of sheet steel a half a mile long, and as thin as a dime.
		Hot rolled sheet is the ideal product for pipe and tubing, auto parts, rail cars, and construction and agricultural equipment.
	www.crc4mse.org /MEL/AUTO/STEEL/hot_rolling.html (239 words)

	MSW Research
		Initially the project concentrates on the hot rolling of steel, however it is hoped that the findings can be used in other rolling processes, for example cold rolling of steel or rolling of aluminium.
		In a rolling mill the thickness of a steel slab is reduced by rolling between two work rolls in a mill stand (Figure 2).
		The "Intelligent Roll Profile Optimisation System" should be able to suggest optimum profiles for all the work rolls in a hot strip finishing mill while minimising the number of different profiles required.
	www.metrologysystems.co.uk /research.htm (787 words)

	Jukka Kömi. Hot ductility of austenitic and duplex stainless steels under hot rolling conditions. ISBN 951-42-6560-2
		Hot ductility of austenitic and duplex stainless steels under hot rolling conditions.
		The effects of restoration and certain elements, nitrogen, sulphur, calcium and Misch metal, on the hot ductility of austenitic, high-alloyed austenitic and duplex stainless steels have been investigated by means of hot rolling, hot tensile, hot bending and stress relaxation tests.
		The hot ductility of type 316L stainless steel determined by tensile tests was found to be better for nitrogen content of 0.05 wt-% than 0.02%, while in double-hit tensile tests the hot ductility values were identical.
	herkules.oulu.fi /isbn9514265602?lang=en (467 words)

	Hot rolling mills
		In the process of hot rolling technology development carried out is a search for most optimum design of wide-strip mills providing for fulfilment of requirements for power saving, capital investments reduction, technological potentialities widening and raising of automation level.
		The most unique of them is semicontinuous 2000 mm mill for hot rolling of coils and heavy-gauge plates from aluminium and its alloys for Krasnoyarsk Iron and Steel Works with an annual capacity of 1 mln.
		In order to finish and heat treat the rolled material provision is made for levellers, defectoscopes, side shears, slitting and crop shears, marking and stamping facility, units for precooling and speed cooling of transfer bar in finisher, normalizing-cum-hardening and temper furnaces, roller quench furnace.
	www.nkmz.com /English/rolling01.html (637 words)

	Aluminium and Aluminium Alloys — Rolled Products Including Sheet, Plate and Foil
		The strip from the hot rolling mill is coiled for transport to the cold mill which might be on the same site or elsewhere.
		Cold rolling speeds vary but modern mills operate at exit speeds as high as 3000 m per minute and alloys may be cold rolled to thickness of around 0.05 mm.
		In hot rolling a knowledge of the influence of the starting stock surface condition, surface condition of the rolls and lubrication used has been necessary, as have the effect of corresponding parameters in the cold mill with the full understanding of the effect of roll coatings, arcs of contact, etc., achieved by very detailed study.
	www.azom.com /details.asp?ArticleID=1673 (657 words)

	Flatness control using a contact type of shapemeter for continuous hot strip rolling. \| Metals, Metalworking and ...
		Thin slab casting with integrated rolling lines have already proved that it is economic to produce 1mm-thick gauge strip(1-3), while the welding of transfer bar to enable continuous rolling on a conventional mill is already practiced on two mills in Japan and is producing 0.8mm thick strip commercially(4).
		In the continuous rolling process using welded transfer bar and also in the slug bar rolling process, a thicker (leading) part of the coil is initially rolled in the mill to the coiler, before adjusting the roll gaps to roll ultrathin-gauge.
		Even when rolling a single gauge, let alone in the flying gauge region, strip flatness is changing during rolling along the length of the coil due to various instability factors.
	www.allbusiness.com /periodicals/article/709435-1.html (866 words)

	Resource Investor - Base Metals - Market to Heat up for Hot Rolled Aluminium Plate Slab (Site not responding. Last check: 2007-10-03)
		The hot rolled aluminium plate slab are a necessary raw material requirement for the processing of many high quality aluminium products, including aviation plates, PS sheets, CTP (Computer-to-plate) sheets, electronic foils, and container materials, while the latter two techniques that are of less cost can produce relative lower quality slabs.
		The ideal proportion of hot rolled plate slab and continuous rolled plate slab is four to six, which means hot rolled plate slab capacity attributes for 40% of the total slab capacity.
		Wanji's twin coiler single stand hot reversing mill: The 2,400 mm equipment is the largest of its kind in China with a capacity of 150,000 tonnes hot rolled slab with thickness range from 3.5mm to 8mm per annum.
	www.resourceinvestor.com /pebble.asp?relid=10999 (1212 words)

	The Modelling of Hot Rolling Processes using Neural Networks: A Bibliographical Review
		In the case of metals being rolled, the knowledge of its magnitude is vital for the correct designing of the mechanical and electrical components of the rolling stands, as well in the development of mathematical models and automation algorithms for the hot rolling process.
		Hot strength was determined using isothermal compression tests with cylindrical samples, with exception of a low C steel, which was tested using isothermal ring compression tests.
		On the other hand, the modeling of hot rolling forces under industrial conditions is becoming a typical example of the application of the mathematical model-neural networks hybrid approach, as mentioned in the Introduction of this chapter.
	www.gorni.eng.br /e/neural_1998.html (12038 words)

	Mill Roll Lubrication — A Cost Cutting Measure
		Although the subject of hot roll lubrication has been around for a long time, recent experience has confirmed its value and benefit to the mill owner and their customers; the key is a professional approach and a commitment by all parties to make it work.
		In the case of hot roll lubrication, reduced mill power consumption and lower loads, fewer roll changes with less regrinds higher output and improved strip surface finish can all be achieved along the way.
		The lubricants are delivered to the roll bite as a dispersion, rather than as an emulsion and are volatilised as they contact the hot strip; any small quantities that find their way into the cooling water will rapidly separate into oil and water phases for easy disposal.
	www.azom.com /details.asp?ArticleID=1584 (948 words)

	Rolling (Site not responding. Last check: 2007-10-03)
		Aluminium is first passed through a hot rolling mill and then transferred to a cold rolling mill.
		Prior to rolling the aluminium is in the form of an ingot which can be up to 600mm thick.
		Rolling mills are controlled by very precise mechanisms and measuring systems.
	www.world-aluminium.org /production/processing/rolling.html (278 words)

	Aluminum Rolling Mills
		The multi-wavelength PRO 120-20 sensor is used throughout the aluminum hot rolling mill to monitor these critical process parameters.
		Hot metal detectors are used to identify the leading and trailing edges of the strip to activate cooling sprays and handling equipment.
		Traditional hot metal detectors are not designed for the low temperature and low emissivity characteristics of aluminum.
	www.williamsonir.com /page226.html (350 words)

	Rolling (Site not responding. Last check: 2007-10-03)
		hot rolling is done above the recrystallization temperature (850°F for Al, and 1250°F for steel) and results in a fine grained wrought structure.
		cold rolling is done near room temperature and produces better surface finishes (32-125 micro in.) and dimensional accuracy (0.004"-0.014"), but with strain hardening.
		The force applied by the rollers creates a stress concentration at the center of the bar which may or may not lead to a central crack in the bar.
	www.myedrawings.com /eng/Manufacturing/Bending/Rolling.htm (743 words)

	Encyclopedia of American Industries - Primary Metals
		This classification includes establishments primarily engaged in manufacturing hot metal, pig iron, and silvery pig iron from iron ore and iron and steel scrap; converting pig iron, scrap iron, and scrap steel into steel; and in hot-rolling iron and steel into basic shapes, such as plates, sheets, strips, rods, bars, and tubing.
		Those establishments engaged in rolling, drawing, or extruding copper are classified in SIC 3351: Rolling, Drawing, and Extruding of Copper.
		Establishments primarily engaged in rolling, drawing, and extruding these nonferrous primary metals are classified in SIC 3356: Rolling, Drawing, and Extruding of Nonferrous Metals, Except Copper and Aluminum, and the production of bullion at the site of the mine is classified in various mining classifications.
	www.referenceforbusiness.com /industries/Primary-Metals/index.html (1065 words)

	Texture and Grain Boundary Evolutions of Continuous Cast and Direct Chill Cast AA 5052 Aluminum Alloy During Cold ...
		Compared with CC hot band, DC hot band underwent significantly higher rolling reduction and hence it displays more flat grain boundaries along the RD. After annealing at 550 °C for 2 hours, CC and DC hot bands are completely recrystallized with equiaxed grain structures (Figures 2c and 2d).
		The texture of the DC hot band displays a combination of a rolling texture and a recrystallization texture (Figure 3b) with a Cube orientation {001}<100> which is also confirmed by microstructure observation (cf.
		The intensity of the Copper orientation increases as the intensity of the Cube orientation decreases.
	www.tms.org /Students/Winners/Liu/Liu.html (4263 words)

	Rolling Mill Equipment,Hot Rolling Mills Equipment,Cold Rolling Mills,Rolling Mill Manufacturers,Rolling Mills ...
		We also manufacture and supply Rolling Mill equipment for ferrous and non-ferrous product, to customers designs and drawings, as may be required, standing full warrantee for material and workmanship.
		A R Engineering manufactures and supplies Rolling Mill equipment to its own designs as well as per clients' designs and specifications, ensuring full responsibility and guarantee for attaining the earmarked targets with quality material and first class workmanship.
		Rolling Mill are provided, also on turn-key basis which calls for a wide range of work like preparation of Feasibility/Project Reports, going on from Lay out Planning, Design, Manufacture and Supply of equipment to successful trial run of the mill.
	www.arenggroup.com /hot-rolling-mills.html (879 words)

	Hot Rolling Fundamentals - A Practical Training Seminar (Site not responding. Last check: 2007-10-03)
		The course covers fundamentals, metallurgical and quality requirements, equipment, rolling theory, control, rolls, temperature control, measurement, safety and new technology.
		Attendees will leave this course with a better understanding of the basic metallurgy involved; the different types of products and product attributes; the types of mills used and equipment involved with the mills; the theory of rolling; the latest technologies involved in hot rolling; safety aspects; production measures and much more.
		Anyone who would like to expand his or her knowledge and understanding of hot mills and hot rolling.
	www.aist.org /conf/06_hot_rolling.htm (392 words)

	A GENERIC OFF LINE SIMULATOR FOR MULTIPASS HOT ROLLING OF STEEL STRIP (Site not responding. Last check: 2007-10-03)
		They were: flow stress modeling, rolling load calculation, strip cooling during finish rolling, recrystallization and grain growth, strip cooling on the runout table and austenite transformation on the runout table.
		The rolling friction was tuned for each stand to give a satisfactory fit between the calculated and the measured rolling load.
		The mill module for calculating the rolling parameters was applied to rolling of HC 14 steels with considerable success.
	metallurgy.iitm.ac.in /tsp/generic.htm (590 words)

	Process Simulation of the Hot Rolling ......... (Site not responding. Last check: 2007-10-03)
		Contact between strip and roll surfaces occurs only at the high points of the asperities so that the real area of contact is only a fraction of the apparent area.
		In a wide hot strip mill, spread, and hence transverse relative slip, is negligible but for the heat transfer, variation along the roll barrel is more significant because of increasing contact pressure toward the strip edges.
		An elastic sector of roll immediately above the roll gap is considered whilst the remainder of the roll is rigid.
	www.shef.ac.uk /mecheng/resstaff/jf/webpg.html (1409 words)

	Hot Rolling Mill
		All are designed to the highest standards of quality and reliability to ensure accurate measurements in the harsh operating conditions of the hot mill.
		Measurement of the strip, using a short wavelength thermometer on a Landscan linescanner, as it is uncoiled ensures that consistent rolling and finishing temperatures are maintained.
		Where there is a requirement for direct rolling of high performance 'dual phase' steels for crash energy-absorbing automotive components, use of an Under Strip Thermometer Systems (USTS) utilising a M3 non contact radiation thermometer thermometer provides a high degree of confidence that the required structure is consistently achieved throughout each coil.
	www.landinst.com /infr/appls/a-htroll.html (1202 words)

	Metal Producing & Processing - Hot Topic: Cold Rolling
		In cold rolling, one of the most important operating issues is control of the roll-gap geometry that affects strip flatness and cross-sectional strip profile.
		In unstable conditions (“cold” rolls or strip width change), with hard and narrow strip format, the roll bending is incapable of guaranteeing strip flatness.
		The purpose of roll coolant is fine control of the flatness; it cannot compensate for sudden changes.
	www.33metalproducing.com /full_story.php?WID=12306 (2022 words)

	Brass - Background, History, Raw Materials, Design, The Manufacturing Process, Quality Control
		Pipes and tubes are formed by extruding, or squeezing rectangular billets of hot brass through a shaped opening, called a die, to form long, hollow cylinders.
		This process is called cold rolling because the temperature of the brass is much lower than the temperature during hot rolling.
		Cold rolling deforms the internal structure of the brass, or grain, and increases its strength and hardness.
	www.madehow.com /Volume-6/Brass.html (2004 words)

Try your search on: Qwika (all wikis)