roll length in four high rolling mill

Mills have been produced in a variety of sizes ranging from a minimum roll size of3” (76 mm) in diameter to a maximum roll size of30” (762 mm) in diameter. A range of available screwdown options include, mechanical, electro-mechanical, and servo-hydraulic.

(3) Hardroll: Shore hardness is about 60 ~ 85hs, which is used for finishingmilland supportingrolloffour high millfor sheet, medium plate, medium section and small sectionmill. (4) Super hardroll: Shore hardness is about 85 ~ 100hs, used in coldrolling mill.

500mm Nash4-Hi Reversing ColdMill: RM-445. Manufacturer: Nash; Manufacture: - Nash / New 1976 - Fully revamped 2012 (new electric system & drive system)MillType:4-Hi Reversing ColdRolling MillMaterial:High-carbon steel, stainless steel, copper alloys, etc. Strip W...

3.Four High Rolling Mills: In this type ofmill, there arefourparallel rolls one by another. In this operation, the rotation of the first and the fourth rolls take place in the opposite direction of the second and the third rolls. The second and third rolls are smaller to provide rigidity in …

The diameter of the 6-highwork rolls amounts to approximately 1:4in relation to the barrellength. In comparison to a4-high millstand, the utilization range is wider. This type ofrolling millis mainly used in offline applications for coldrollingof soft and medium strip and for a wide range of strip widths.

AGC4-hirolling millcontrol accuracy, especially suitable forhighprecision cold-rolled strip production. Production line process Front coiler→(Unloading car)→Machine front device→4-hi mainrollingmil→ Machine after the device→After the coiler (Unloading car)→according demands to arrange the uncoiler, Starting straightening ...

Either the work roll or the back-up roll is driven, depending on customer requirements. The diameter of the 4-high work rolls amounts toapproximately 1:4in relation to the barrel length. This type of rolling mill is mainly used in offline applications for cold rolling of soft and medium strip and for a wide range of strip widths, as well as for break-down rolling in offline applications.

Aug 08, 2019· Upperrollchock has a support with an additional lining for holding up the toprollwhen therolling millis idling. In afour high mill, there arefourtypes ofrollchocks namely (i) top back uprollchock, (ii) top workrollchock, (iii) bottom workrollchock, and (iv) bottom back uprollchock.

Used 80" MESTA4-HIGHCOLD REVERSINGMILLfor sale - 72227 by National Machinery Exchange Inc in Newark, New Jersey

Four-High: A4-HImillmay be used for finishrollingof thin gauge stock. 6-HIrollinserts are also available for narrow width ribbon and foil products. Combination: A combinationrolling millis a versatile “two-in-one” type of metalrolling millthat permits both 2-HI and4-HIrollingoperations.

Z-High®Mills. Sendzimir Z-High®Millswere developed to combine the advantages of the Sendzimir cluster-typerolling millwith those of the4-High. Revamp ExistingMill. The Z-High® concept permits the revamping of a classical4-High millwith a system that uses amuch smaller workroll.

That producehighrate of production more than rate of production more than twohigh rollmethods. This threehigh rolling millused to billetrolling, blooming or finishrolling.4 high rolling mill:4 high rolling milldiagram. Thatrolling millhavingfourhorizontal rolls, which two rolls are …

Jan 09, 2017· Tags Rolling Mills; 4-High Rolling Mills. Four-high rolling mills can be put intandem,two to seven stands, instead of a reversing mill. They can be equipped with load cells to tell the separating force and hydraulic or mechanical screw downs, depending if it is hot or cold rolling.

Rolling millconsisting of three rolls or known as 3High rolling millis typically used for performing multiple reduction passes by wrapping material around the centermill rolland performing another reduction on the oppositemill rollpair. 3High millcan also be used with varyingmill rollsizes to induce a specific percentage of reduction of material on a single side of the work piece.

Multi-High Rolling Mill: The multi-high rolling millconsists of two small diameter working rolls, a row of intermediate driving rolls, and a raw of backup rolls. This arrangement involves a cluster of either 12 or 20 rolls, resulting in exceptional rigidity of the wholerollsystem.

May 02, 2017· Tandemrollingis also known as continuousrollingin which two or more set offour high rolling millarranged in a series in which each set is called stand. These stands are arranged so they canrollthe work piece in decreasing cross section. It is used forrollingthick work piece in single pass.

Dec 24, 2018· 3.Four High Rolling MillsTheFour High Rolling Millshave arollstand withfourparallel rolls placed one above another. The top and bottom rolls work in the opposite direction. The two in the middle are smaller than the top and bottom rolls, which are also known as backup rolls.4.TandemRolling Mills

Sep 30, 2020· 3.Four High Rolling Mills. Themillhasfourhorizontal rolls, two smaller diameters and two much larger. The larger rolls are called backup rolls. The smaller rolls are the working rolls, but if they would be thicker in the centre and thinner at either end.

TagsRolling Mills; 2-High Rolling Mills. Two-high rolling millshave a unique advantage in cost savings because a 2-highconfiguration is less expensive to manufacture. A 2-high millcan be any size. Largerolling mills, similar to photo left, are used for skin passing with small reductions of 1% to 2%.