Feb. 1975 Roughing 4-high reversing 4-high reversing 1,200 1,900 4,800 HSB+VE+4H+4H HSB +VE 4H 4H HSB +VE 4H 4,700 4,724 4,724 5,500 1,830 (with bending roll) 2,000 2,000 2,400 1,020 1,000 1,000 1,200 Mar. 1968 Finishing Roughing 4-high reversing 4-high Finishing reversing 4-high Jan. 1977 reversing Kimitsu Oita Mill Type Work roll diameter (mm ...
TDI Group, LLC .P.O. Box 38657 .Pittsburgh, PA 15238-8657 . Tel: 412.826.4950 . Fax: 412.826.4959 . MATERIAL PROCESSED: Steel, Strip
Power is applied to a rolling mill by applying a torque to the rolls and by means of strip tension. The power is spent principally in four ways 1) The energy needed to deform the metal. 2) The energy needed to overcome the frictional force. 3) The power lost in the pinions and power-transmission system.
The hot rolling line is 320 meters long, which main equipment consists of two Main Function and Features, one reversing roughing mill, one coil box and one 4-high 6 stand finishing mill. Its annual designed production capacity is 2.4 million tons, which may produce all kinds of hot rolled bands and hot rolled temper grade coils with excellent ...
2. Three High Rolling Mills. It consists of three rolls positioned directly over one another as shown in the figure below. The direction of rotation of the first and second rolls are opposite as in the case of two high mills. The direction of rotation (path) of second and third rolls is …
Classification of Rolling mills. satyendra; June 4, 2013; 3 Comments ; Cold rolling mill, Flat mill Long product mill, Hot rolling mil, Pipe mill, Reversing mill. Continuous mill, rolled products, rolling, tandem mill,; Classification of Rolling mills. Rolling is the process of plastically deforming metal by passing it between the rolls.
Theoretical calculation method of firsthand roll crown for the four-high reversing mill of the medium and heavy plate based on production condition and equipment features at Xingang medium plate plant is introduced., …
It is used in slabbing, plumbing, rail, plate roughing work and many other areas. As there is the need for a reversible drive, this mill is cheaper compared to the others. Two High Non-Reversing Mills: In these mills, two rolls continuously revolve in the same direction and we can't reverse the direction of …
4-High Reversing Roughing Mill and Vertical Edger 4-High Reversing Finishing Mill with Steckel Furnaces – United Engg Automatic Gauge Control, work roll bending in the finishing mill to give the strip a better profile and gauge
Hebei Moran Environmental Protection Technology.,Ltd is one of main metallurgical equipment factory in China. our products include steel and aluminum rolling mill,2hi 4hi 6hi 8hi to 20 hi rolling mill machine, skin pass mil, tension leverler, tension leverler and skin pass mix mil, caster, steel coating line, annealing furnance,grinder, and other related equipment and its parts. our machine ...
The two-high rolling mill is of two types; reversing mills and non-reversing mills, in the reversing mill the rollers are both adjustable and their rotations are made in two different directions. The work is done by passing the metal between the two rollers that rotate at the same speed but in the opposite direction.
In order to solve the serious backup roll spalling of roughing mill during ultra-wide stainless steel rolling process, a 3D elastic deformation finite element model of 4-high roll stacks was ...
Features. 1. Configurable work roll bending roller device, 2. The whole machine structure is simple, easy maintenance operation, less investment. 3. Screw down has two kinds control method, ordinary electromechanical screw down and AGC hydraulic screw down. AGC 4-hi rolling mill control accuracy, especially suitable for high precision cold ...
title of specification: 550 danieli roughing bar mill stands : new arrival: true : roll dia. 21.65" roll face: 10" roll configuration (h/v) h/v : manufacturer of equipment: danieli : year of manufacture: 1990's : material rolled (stnless, lo carbon, hi carbon) steel : previous use: bar : reversing / non reversing: non reversing : wr brg type ...
x The initial hot-working operation for most steel products is done on the primary roughing mill (blooming, slabbing or cogging mills). x These mills are normally two-high reversing mills with 0.6 -1.4 metres diameter rolls (designated by size).
The new designed four-roll precision hydraulic reversing mill is widely used for rolling medium wide-strip mill due to its simple structure, convenient maintenance and low investment cost. 0086 29 8536 7200
Table 1 summarizes the main mill and product specifications, and Figure 1 shows the general line layout. MILL EQUIPMENT. The line consists of a 4-high reversing roughing mill (R2) equipped with hydraulic gap control and a vertical edger at the entry side (Figure 2).
Two alloys grades for work rolls used in the roughing stand of Hot Strip Mill — high chromium steel (HCS) and semi-high-speed steel (semi-HSS), In this paper, the new semi-high-speed steel grade ...
All Aluminum Association published standards, data, specifications and other technical materials are reviewed and revised, reaffirmed or withdrawn on a periodic basis. Users are advised to contact The
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
X-Roll® program offers the right cold mill for you. Ideal for an annual production of 100,000 to 500,000 t are our single-stand reversing mills (RCM). Depending on your product spectrum, they come in four-high or six-high design with CVC ® plus. What makes single-stand reversing mills stand out is their very broad product spectrum.
for a future extension and reduces mill maintenance. The rougher R5 is the last of four non-reversing stands in the five-stand roughing mill of ArcelorMittal's hot strip mill in Dunkirk, France. After many years of service, the old gear unit of the stand required an immense amount of mainte-nance and no longer met today's high load ...
These backup rolls are larger and contact the back side of the smaller rolls. A four-high mill has four rolls, two small and two large. A cluster mill has more than 4 rolls, usually in three tiers. These types of mills are commonly used to hot roll wide plates, most cold rolling applications, and to roll foils.
Two-high rolling mills Three-high mills Four-high mills Cluster mills Two-high rolling mills Three- high mill Aka reversing mill the direction of material movement is reversed after each pass used for hot rolling in initial breakdown passes (primary roughing or …
4 High Rolling Mills For Sale, New & Used | MachineSales.com. MACHINE: # 12272 Four-high mill Norton 650 Year of Manufacture 1966 - major repair - 2007 Technical data: - Thickness range of rolled strip 14,5 - 1Machine # 12215 manufacturer: e w bliss co type MILL: 4 high non reversing rolling MILL work roll size: 1...
The workhorse roughing mill has 135" wide rolls for rolling 'broadside' (as the first roughing mill is commonly called) to make a slab wider. A 5,000 hp motor drives 42"-diameter work-rolls through 28:1 gears to reduce the slab's thickness by as much as 2-½". The last four roughing mills each incorporate edgers for width control ...
These rolls are usually heat treated, the hardness range is 35 -55 deg Shore and they are commonly used as back-up rolls in 4-high rolling mills. An alloy steel containing tungsten (W) and with a hardness of 40 – 50 deg Shore is very resistant to fire cracking and is sometimes used for roughing rolls in hot strip mills.
Forged and Cast Rolls ™ DESCRIPTION APPLICATIONS Product Type of Mill Position Plate 2,3and 4 High Roughing/Finishing Wide Strip 4 High Continuous Finishing Wide Strip 4 High Reversing Roughing/Finishing Cold Reduced Strip 4 High Continuous Work Rolls Sheet and Coil 2 High Skin Pass Work Rolls Sheet and Coil 4 High Temper Back Up Rolls DEPTH ...
Complete Coil Plate Mill (EU) – main equipment; 2 no. reheating furnaces; Davy 4 high reversing roughing mill; Davy crop shear; 6 no. Davy 4 high finishing stands; 2 no. downcoilers; – plus all ancillary/supporting facilities. Sold to China.
Technical information about the six high mill Roughness Freq. Of roll Diameter (mm) Ra (micron) change Work roll 425 (max) 380 (min) 0.5 – 0.6 500 tonnes Intermediate rolls 490 (max) 440 (min) 0.6 – 0.7 1000 tonnes Back up rolls 1250 (max) 1050 (min) 0.6 – 0.8 10000 tonnes 5. 7.
