tandem mill back up rolls manufacturer Grasping strong production capability, advanced research strength and excellent service, Shanghai tandem mill back up rolls supplier create the value and bring values to all of customers.
The mill was driven by a 12 kW DC motor, through a four-speed gearbox. The top surface speed of the rolls was 1100 mm/s. The surfaces of the 150 mm diameter, 203 mm long tool steel rolls were sandblasted, creating random roughness of R a =0.3 μm. Load cells, placed over the bearing blocks of the top roll, monitored the roll separating forces.
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.
execution 4-STAND QUARTO TANDEM ROLLING MILL year of construction 1969/1984/2004 coil inside diameter 400 mm coil outside diameter 1.500 mm speed 400 m/min. work rolls: D. 130 x 340 mm (driven) back up rolls: D. 390 x 335 mm motors: DC, converters ABB (installed 2004), 200 kW emulsion filtration: LAVAL PLC: ABB
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 ...
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) ...
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.
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 ...
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.
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.
Most modern Tandem Cold Mill of five (5) stands with all 6-high mill is provided. ... Work rolls, intermediate rolls and back-up rolls can be changed while strip is in the mill. Work Rolls and Intermediate Rolls are to be changed by full automatic mode. Rolls of all stands can be changed simultaneously, when roll diameters are larger than ...
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 ...
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.
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.
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
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).
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 ...
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.
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.
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 ...
Complete line projects include Coupled Pickling & Tandem Cold Strip Mill (PL-TCM) for POSCO Gwangyang Works and Bridle & Steering Unit line for POSCO VST STS SPL. Equipment supplied includes Leveler Roll Assembly for Steel Dangjin Works, Back Up Roll Assembly at JFE Steel Chiba Works, and Pinch Roll Assembly at Dongkuk Steel Dangjin Works.
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).
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 ...
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
Figure 19: Trials (T1-5) of forged HSS work rolls in the first two stands of a 5-stand cold rolling tandem mill (steel grades: H300LA and MBW 1500, HSS = forged High Speed Steel rolls, SSt (HV) = standard
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