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Abstract: According to the chatter phenomenon of 3 rd stand of a steelworks six-roller tandem cold mill (TCM), vertical vibration of tandem cold mill was simplified to eight degrees of asymmetric freedom mass-spring system. Virtual prototype model on vertical vibration of tandem cold mill was established and natural frequencies and main vibration mode of mill were solved by using automatic ...
The mill stand can be work roll driven or back up roll driven. The mill can be designed with hydraulic work roll bending or back up roll bending. Installations typically have a single rolling mill stand, but may have two. Pinch rolls provide back tension for the pay off reel in the entry section and entry and exit tension for the temper pass.
The main types of mills: back-up roll of 650mm Mill, 900mm Mill, 1050mm Mill, 1250mm Mill, 1450mm Mill. BIEC BACKUP ROLLS ARE USED IN 4 HI and 6 HI REVERSING AND TANDEM MILLS FOR ALL PRODUCT ROLLING SUCH AS STEEL, STAINLESS, ALUMINUM,BRASS, COPPER UPTO SINGLE PC WEIGHING 32000 KGS
Our latest developments of Forged Back Up Rolls offer higher performances than Cast Back Up Rolls. The structural homogeneity of these products enables an increase in hardness, as well as a high level of resistance, guaranteeing higher performances in the mill. Brochures and manuals: Sidenor Forgings and Castings Brochure (English-spanish) ...
Tandem cold-mill solutions from Primetals Technologies stand for high product yields combined with flexible production, low operational costs and simplified maintenance work. Depending on the product mix, the production capacity of continuous tandem mills from Primetals Technologies can exceed 1.2 million tons per year.
Tandem mills – A tandem mill is a type of rolling mill where rolling is done in one pass. In a traditional rolling mill rolling is done in several passes, but in tandem mill there are several stands (>/=2 stands) and reductions take place successively. ... These back up rolls have a further set of backing rolls in the third tier. Sendzimir ...
Tandem Roll Wire Drawing & Rolling Mills These mills are capable of cold and hot rolling of difficult-to-draw wires such as Ti and its alloy and special high-carbon steels. The rolls are of 2-direction V and H and 3-direction type, which are chosen according to materials, etc. of workpieces.
Tandem Mill Recommendations SiC/ Al2O3 Shellac, 80-150 grit Work 15-18 Aluminum Oxide, Resin, 24-46 grit Backup 30-100 Roll Finish (RA) Wheel Rx Note: "Ra", is the absolute distance from the mean line of the roughness profile within the evaluation length. There are .
May 02, 2017· Tandem rolling is also known as continuous rolling in which two or more set of four high rolling mill arranged in a series in which each set is called stand. These stands are arranged so they can roll the work piece in decreasing cross section. It is used for rolling thick work piece in single pass.
Tandem mill Sumitomo Metal, Industries Ltc. Apr 21, 1987 · In the tandem mill comprising a plurality of stands according to the present invention, a suitable mill taken from the group consisting of the common bendable roll fourhigh mill N, the sliding sleeve mill A, the intermediate backup roll shifting mill B, and the expandable sleeve mill C is selected and loed at each stand.
Apr 01, 2010· Each rolling stand of the mill is composed of a stack of rolls. For a 6-high mill the rolls are named respectively work roll – WR (i.e. the roll in contact with the material), back-up roll – BUR (the biggest roll at the top controlled by an hydraulic cylinder) and the intermediate roll – IR, placed in the middle between the work and the back-up roll (see Fig. 1).
Steel - Steel - Forming of steel: Forming processes convert solidified steel into products useful for the fabricating and construction industries. The objectives are to obtain a desired shape, to improve cast steel's physical properties (which are not suitable for most applications), and to produce a surface suitable for a specific use.
The back-up rolls could also be . ... The NO.3 tandem cold mill in KSC's Chiba Works is well known for its multi-purpose characteristics in rolling worthy products such as stainless steels and ...
Apr 21 1987· What is claimed is 1 A tandem mill comprising a plurality of stands characterized in that the final stand is a sleeve expanding mill at least one of the stands exclusive of the last stand is a sleeve sliding mill or an intermediate back up roll shifting mill . Back up Rolls hktxgy
Tandem Mill Back Up Roll Reversing Mill Back Up Roll : General Use : FB-7 : 5%Cr Steel : Tandem Mill Back Up Roll Reversing Mill Back Up Roll : High Hardness Deep Hardness penetration : NBR : Special Material : Continuous Tandem Mill Back Up Roll : Fatigue Resistance Wear Control : NBX : Special Material : Hot Strip Mill Back Up Roll for High ...
Due to the reversing rolling passes, production efficiency is lower than that of a tandem mill. However, because the rolling parameters can be quickly changed for each coil, reversing cold mills are especially suitable for the small-lot production of various product types. The size of the mill equipment is also smaller, which allows easier ...
roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product. Roll Bite temperatures in slower heavily drafted stands can peak in the region of 300oC, diminishing with the
Back up rolls – 4 . High speed . 4 . 4 Hi ... The Bland ford method used for tandem rolli ng mill. The . MATTER: International Journal of Science and T echnology . Vol. 1, , pp. 83-95, July ...
The problem with a small roll is a reduction of stiffness, which is overcome using backup rolls. 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.
Tandem mill installed in 1970. D stand delivery end of 44 tandem breakdown mill. Work rolls and backup rolls from 43, and 44 mills await dressing in a roll grinder. Betts-Bridgeford roll grinding lathe, installed in 1980-1981. Machinist Tom Shultz measures roll with a micrometer prior to grinding.
The arrangement of cluster mill is shown in Fig. 2.9 (d). Type # 5. Multi-High Rolling Mill: The multi-high rolling mill consists 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 whole roll ...
Tandem Mill Rolls. Pic.1 Five Stands Tandem Mill Rolling Line . Stand No. F1: F2: F3: F4: F5: Work Roll: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged: Intermediate Roll: 3% Cr Forged: 3% Cr Forged: 3% Cr Forged: 3% Cr Forged: 3% Cr Forged: Back up Roll: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged: 5% Cr Forged ...
Equipped with one of the best back up roll brands, Kaida Roll Group is one of competitive skin pass mill roll, temper mill roll, tandem mill roll manufacturers and suppliers in China, welcome to visit our website. Forged steel back-up roll is mainly used in 4-Hi mill and 6-Hi mill. The diameter of roll .
Tandem Mill Final Stand Roll : Less Roll Marks : FH-AC : Special Material : CGL Skinpass Mill Work Roll : Spalling Resistance under CGL Condition : SFH-20 : Special Material : Tandem Mill First Stand Roll Dull Finish Skinpass Roll : Dull Maintaining Wear Resistance : E61 : High Speed Steel : Hard Material Rolling Mill : Wear Resistance Abrasion ...
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