roll pass design for hot rolling of long bar products

  • Home
  • /
  • PRODUCT
  • /roll pass design for hot rolling of long bar products
Roll Pass Design – IspatGuru

2014-6-18  Roll pass design is an essential part of long product rolling process, since the long products are rolled between the shaped rolls in the long product rolling mills. Roll pass design generally means the cutting of grooves in the roll body through which steel to be rolled

Read More
Understanding Rolling Process in Long Product Rolling Mill ...

2015-11-27  The rolling sequence of a roll pass design is subject to the limitations applied by the rolling load, the roll strength and the torque available for rolling. Roll pass design is also to ensure that the physical dimensions and material of the roll are capable of withstanding the heaviest loads arising during the rolling sequence.

Read More
Roll pass design in continuous bar mills - SlideShare

2015-5-18  Thumb rules in rolls pass design Fittings from oval to round must be 0.3 to 0.7. For ovals width to height ratio must be less than 3.0. 13. Spread When the steel is compressed in the rolls it will obviously move in the direction of least resistance, so

Read More
The Hot Rolling Process - California Steel

roll the transfer bar in tandem, meaning each bar will be rolled through all six stands at once. The hot steel is quite fragile as it is rolled and tension between the finishing mill stands must be closely controlled at very low levels in order to avoid stretching or tearing the strip. Prior to the finish rolling operation, the head- and tail-ends

Read More
HOT ROLLING - FLAT PRODUCTS Primetals Technologies

The concept of endless hot rolling was introduced to meet the increasing demands for hot-rolled steel sheet using a cost-effective process compared to the conventional batch-type process. Endless rolling involves the joining of the tail end of a preceding transfer bar with the head end of the following transfer bar

Read More
Surface and Inner Deformation during Shape Rolling of

2007-8-14  geometries, like square, diamond, round, oval, box etc. Roll-pass design, which decides the shape, size and combination of the grooves, is a complex work. However, using an optimal roll-pass design will result in defect free products with correct dimension. In the work of improving the roll-pass design finite element simulations are a useful tool.

Read More
A BASIC UNDERSTANDING OF THE MECHANICS OF

2003-10-15  New capa fa. Roll productivity is growing for many reasons, perhaps we can talk about a 5% increase. (Roll consumption today for long products is down from 10 - 15 kg/t to 1 - 4 kg/t; for flat products from 4 - 6 kg/t to 1 - 2 kg/t; with strip casting roll consumpti.

Read More
Technical Report UDC 621 . 771 . 25 Progress of Bar and ...

2016-4-6  three-roll rolling mills of the latest design. The bar mill produces straight bars of 18–120 mm in diameter and bars in coil of 18–52 mm in diameter. After shipment from the mill, these straight bars and/or bars in coil are processed to end products (fasteners, shafts, hubs, cranks, and

Read More
Rolling of Metals: Process and Principles (With Diagram)

2021-5-26  Fig. 2.3 shows the successive stages in the reduction of a billet (100 x 100 mm) to a round bar. The billet is rotated at 90° after each pass. Principles of Rolling: The rolling is a process which consists of passing the metal through a gap between rollers rotating in opposite direction. This gap is smaller than the thickness of the part being worked.

Read More
DEFECTS - METAL WORKING AND ROLLED PRODUCTS

2019-2-4  ii) Non uniform deformation: When the rolling conditions a re such that only surface of the work piece is deformed. The cross section of the slab is deformed into the shape as shown. The middle portion is less deformed as compared to the outer surface. This may be due to variation in temperature in the metal. Surface temperature being more than

Read More
Products › Long › Bar and Section Mills High-production ...

LONG PRODUCTS Bar and Section Mills ... Danieli multi-strand slit rolling technology is a combination of a special roll pass design and guide equipment to shape and longitudinally separate the incoming billet into 2, 3, 4 or 5 individual strands. These are then rolled together (as one bar) down to the finished size in the finishing mill stands ...

Read More
Hot Rolling Mills for Long Steel Products - NCO

2021-3-5  rolling mills for long products 1 of the world's leading engineering and plant-building companies in the steel rolling mill industry It was 1969 when all began, when our family, passioned by mechanical engineering, started serving the rising industry of the rolling

Read More
MATHEMATICAL MODELLING OF FLAT AND LONG HOT

In this study, pilot rolling of 100×100 mm billet into 20 mm diameter bar in 13 passes was carried out. In each roll pass, a sample was taken and a cross-section print of the rolled bar was made. Simulations of indi-vidual roll passes were carried out for various friction values according to

Read More
Technical Report UDC 621 . 771 . 25 Progress of Bar and ...

2016-4-6  After hot rolling, bar and wire rod products undergo various lengthy processing steps in ... Rolling pass 2 pass (reducing 2 pass) ... three-roll rolling mills of the latest design. The bar mill produces straight bars of 18–120 mm in diameter

Read More
PROCESS OF ROLLING MILLS - LinkedIn

2016-2-25  The rolling sequence of a roll pass design is subject to the limitations applied by the rolling load, the roll strength and the torque available for rolling. Roll pass design is also to ensure ...

Read More
Wear of hot rolling mill rolls: an overview - ScienceDirect

1994-8-1  An overview of roll materials is given including adamites, high Cr materials, high speed tool steels and compound rolls. Non-uniform wear, recognised as the most detrimental phenomenon in section rolling, can be controlled by roll pass design. This can be achieved by computer-aided graphical and statistical analyses of various pass series.

Read More
End splitting during long products rolling billet quality ...

2014-12-19  Rolling Process • Hot ductility • Sulphur content and sulphur type • Temperature control • Pass design • Guiding issues 14. Rolling Process • Hot ductility – Measurement by torsion, tension or compression test, at a given deformation rate and temperature, on a machined sample from a defined part of the billet 15.

Read More
Increasing of Long Products Rolling Efficiency ...

Most national companies are seeking to reduce costs, improve technological processes and increase profitability. The steel industry is no exception - an example of cost reduction is a technology of sorbitized wire rod production. This technology can improve the performance characteristics of wore rod and reduce the number of patenting stages during metalware production.

Read More
Roll Torque - an overview ScienceDirect Topics

L. Cser, in Mathematical and Physical Simulation of the Properties of Hot Rolled Products, 1999. 7.2.3 The temperature, roll force and torque during hot bar rolling – simple models. Low carbon steel bars, 16 mm square, were rolled in four passes, consisting of a square-diamond-square sequence, to a 10 mm square cross-section.

Read More
Rolling of Metals: Process and Principles (With Diagram)

2021-5-26  The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

Read More
Hot Rolling Mills for Long Steel Products - NCO

2021-3-5  rolling mills for long products 1 of the world's leading engineering and plant-building companies in the steel rolling mill industry It was 1969 when all began, when our family, passioned by mechanical engineering, started serving the rising industry of the rolling

Read More
Technical Report UDC 621 . 771 . 25 Progress of Bar and ...

2016-4-6  After hot rolling, bar and wire rod products undergo various lengthy processing steps in ... Rolling pass 2 pass (reducing 2 pass) ... three-roll rolling mills of the latest design. The bar mill produces straight bars of 18–120 mm in diameter

Read More
PROCESS OF ROLLING MILLS - LinkedIn

2016-2-25  The rolling sequence of a roll pass design is subject to the limitations applied by the rolling load, the roll strength and the torque available for rolling. Roll pass design is also to ensure ...

Read More
Brief description for Transfer of Technology on DMR

2019-8-13  They are long products with an asymmetric cross-section (see Figure below) that are produced by hot rolling using semi-rolled continuous cast slabs or billets from authorized manufacturers as feedstock. The manufacturing process is fairly complex and involves multiple steps including roll pass design, actual rolling, and

Read More
Increasing of Long Products Rolling Efficiency ...

Most national companies are seeking to reduce costs, improve technological processes and increase profitability. The steel industry is no exception - an example of cost reduction is a technology of sorbitized wire rod production. This technology can improve the performance characteristics of wore rod and reduce the number of patenting stages during metalware production.

Read More
End splitting during long products rolling billet quality ...

2014-12-19  Rolling Process • Hot ductility • Sulphur content and sulphur type • Temperature control • Pass design • Guiding issues 14. Rolling Process • Hot ductility – Measurement by torsion, tension or compression test, at a given deformation rate and temperature, on a machined sample from a defined part of the billet 15.

Read More
Types Of Rolling Process In Manufacturing Industry

Compared to forging, rolling is a more economical method of deformation when metal is required in long lengths of uniform cross-section. The hot rolling process occurs with the initial breakdown of ingots into billets and blooms. This is followed by further hot rolling into the sheet, plate, bar, rod, rail, and pipe.

Read More
Rolling processes - Al-Mustansiriya University

2016-4-18  Rolling processes 5-1 introduction: Rolling is the process of reducing the thickness or changing the cross section of a long workpiece by compressive forces applied through a set of rolls, as shown in figure (5-1). Fig. (5-1) Most rolling is carried out by hot working, called hot rolling, owing to the large amount of deformation required.

Read More
Rolling of Metals: Process and Principles (With Diagram)

2021-5-26  The rolling process is shown in Fig. 2.1: Rolling is done both hot and cold. It is accomplishes in rolling mills. A rolling mill is a complex machine having two or more working rollers, supporting rollers, roll stands, drive motor, reducing gear, flywheel, coupling gear etc. Rollers may be plain or grooved depends upon the shape of rolled product.

Read More
Blogger: User Profile: Hot Rolling Mill Consultant

We are able to design, manufacture, install and commission your hot rolling mill plant from A to Z. Upgrading your existing Bar and Wire Rod mills, to increase production and improve efficiency and product quality, is our specialization. Hot rolling mills, turn-key rolling mills for long products, upgrading and revamping of rolling mills ...

Read More