Pudong new district, Shanghai, China.
Product description. The diameter of the 6-high work rolls amounts to approximately 1:4 in relation to the barrel length. In comparison to a 4-high mill stand, the utilization range is wider. 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.
Selection of Work Roll Diameter for Cold Rolling Mill* By Hajime WA TANABE, * * Hisashi HONJO * * and Kiyoto MI YASAKA* * Synopsis The work roll diameter is a very important factor which influences the ... on the materials with a high flow resistance, such as ... Hi : a: Hn = H2 - 1 In 2 2 u hi ho 1-o 1'k ~' ...
Mechanics of Cold Rolling of Thin Strip 443 where yiw is the vertical deflection of the work roll at element i, gijw (, ) is the influence function for the work roll deflection due to the combined bending and shear forces generated by rolling load, giwf is the influence function for the work roll deflection due to the force generated by the roll bending mechanism, k represents the …
The 3Hi Cold Rolling Mill is used mainly for breakdown rolling of thick sheets/ plates of metals like Copper, Brass and Aluminum where the weight of sheet is on the higher side. It is difficult to return such heavy sheets back to the operator after the pass so the 3Hi Mill is advantageous in such scenario because it provides for reversible ...
In order to solve the problem of flatness defects and roll spalling caused by rolling thin gauge strip in the 1 500 mm UCM (6-high middle rolls …
6-Hi Reversing Cold Reduction Mill. Gives the work rolls adequate support at strip edges through the action of the intermediate roll on the back- up roll so that strip shape can be preselected. Improves roll force distribution over the strip width and, installation and positioning of the intermediate rolls enhance the effectively of work roll
This 1450mm 20 Hi Reversible Cold Rolling Mill was designed to roll 1.0~3.0mm plain carbon steel, low alloy steel and 200, 300,400 series stainless steel board into 0.2-1.2mm thick as clients'requirement. The model has flexible …
4hi Rolling Mill Rolls manufacturing company is also a leading manufacturer and exporter of 4 Hi Cold Rolling Mill Rolls of international quality.The 4hi mill rolls are fabricated with the high quality raw material. These 4high mill rolls are known for its design, robust construction and high efficiency.
Thus, it was desired to develop a new type of mill which is capable of controlling the rolled strip shape even with changes in rolling conditions. The performance of a conventional 4-High mill is not satisfactory in these requirements. A new 6-High cold rolling mill (hereinafter HC-MILL) has been developed in order to solve these shape problems.
20-HS mill rolling mills from SMS Group - technology that pays off. You benefit from our 20-high mills because they are packed with state-of-the-art mechanics, hydraulics, electrics, and automation. Plus: it's easily possible to retrofit these features into existing mills.
The 20 high rolling mill from ANDRITZ Sundwig is mainly used for cold rolling of metal strip to thinnest final gages and wide range of strip width. The special feature in a 20 high mill is the relation between work roll diameter and barrel length.
trolling the roll gap position is such that produces the desired output thickness [6]. Roll eccentricities are caused by axial deviations between the roll barrel and the roll necks due to irregularities in the mill rolls and/or roll bearings [11]. These irregularities cause cyclic deviations in the strip thickness at the output of a mill stand.
2 Principles and Applications of Metal Rolling (ii) Shape of the rolled product- flat, sections or hollow sections rolling. (iii) Direction of rolling- lengthwise, transverse, and skew rolling. (iv) Mode of rolling mill operation- continuous (unidirectional), and reverse rolling, where direction of rotation of rolls are reversed. When two rolls of equal diameter and with axis lying …
His successive functions were: mill operator. (20 Hi, skin pass), technician in design office for mills, finishing operations, annealing and pickling. In 1986 he founded the company SARL DUPREZ, the activity is trade and services. He manages this company. and works in freelance as cold rolling expert. 2- The missions assumed around the world.
If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the utilization can be improved by 1 %, the available rolling hours is 365 x 24 x 0.81 = 7096.6, creating 87.6 extra rolling hours. At 114.16 tons/hour that …
The rolls can be ground to an hourglass shape. A 6-high mill also allows for substantial roll shape, depending upon the horizontal movement of the rolls. Another advantage of a 6-high mill is a larger work roll which can transmit considerable torque and allow for high speeds up to 7,000 FPM. Large diameter, light gauge coils can have thousands ...
Tenova I2S is a recognized leader in technologies and innovative design and supply of cold rolling mills. Since 1974, Tenova I2S has specialized in providing customers the highest quality solutions in a broad range of mill types for production of stainless steel, carbon steel, specialty steels and non-ferrous metals.
rolling mill can b e designed as 20 Hi, 12Hi, 8 Hi, 6 Hi, 4 Hi and 2 Hi rolling mills. In India now a days mostly 20 Hi and 4 Hi rolling mills are installed in bi g steel produ ction units.
2 Hi Rolling Mil Rolls High grade of 2 Hi Cold Rolling Mill rolls are manufactured by us using tough raw material which are procured by our trusted vendors for manufacturing of heavy duty rolls used in 2hi rolling mills.We maintain all international norms and quality check specification for all our 2hi mill rolls which has enabled us to be leader in rolling mill rolls …
Production flow chart 2. What Can be Detected? Defects stem from a variety of causes such as poor billet quality, worn rolling mill parts, and process malfunctions. Detectable defect types are many and include shells, cracks, pinholes, scabs, inclusions, laps and overlaps (Figure 2), as well as repetitive defects ECNDT 2006 - We.1.8.3 1
rolling mill can b e designed as 20 Hi, 12Hi, 8 Hi, 6 Hi, 4 Hi and 2 Hi rolling mills. In India now a days mostly 20 Hi and 4 Hi rolling mills are installed in bi g steel …
Cold Rolling Mill, Zoom-MillTM, Off-gauge, Minimization, Yield, Productivity, Labor saving, Leader strip, Spot welder, Even-numbered Pass 1. Introduction For the production of cold rolling steel strips in a yearly production capacity range from 150,000 to 300,000 tons, a reversing cold rolling mill, which
The 2Hi Cold Rolling Mill are used for rolling of sheets, plates and coils of softer metals like Aluminum, Copper, Brass, Lead etc. to higher thickness (normally above 1 mm). We have manufactured more than 200 such rolling mills ranging …
2 High Rolling Mill - Element. 2 High Rolling Mill. Rolling mills consisting of two rolls or known as a 2 High rolling mill is used for anything from temper pass to breakdown of material. The 2 High rolling mill typically have larger diameter …
4 hi mill cold roll flow chart. Process Flow Chart – Stelco Limited. The Pickled coils are cold rolled on 4 Hi AGC cold rolling mill to obtain the required thickness and annealed in HSD fired bell type annealing furnace for bright annealing. In case of medium and high carbon coils the process of rolling and intermediate annealing can be ...
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