Application: For hot strip mill, two-high reversing stands of plate mill, Roughing mill, billet rolling mill, section mill, barmill and roughing stands of high-speed wire-rod mill. 3. Our Factory. LONSUN is trusted leader with an exceptional quality, specialized in pipe making mill, rolling mill and machine parts etc.

The roughing mill work rolls of many hot rolling mills in the world are faced with the problem of contact fatigue in the bonding and bonding zone before reaching the scrap diameter. This phenomenon is caused by factors such as rolling steel with high resistance to deformation, long rolling cycle, increased reduction in order to increase the ...

In two high reversing rolling mills the rolls rotate ist in one direction and then in the other, so that rolled metal may pass back and forth through the rolls several times. This type is used in pluming and slabing mills and for roughing work in plate, rail, structural and other mills.

Abstract. Equations are derived for the normal roll pressure, specific roll load and torque in hot rolling mills, using the condition for plastic deformation in rolling derived by Orowan, together with von Kármán's equation of equilibrium. Although applying strictly to the rolling of ideal plastic-rigid materials, these equations may be ...

Rolling Mills. Pepetools engineered a unique housing that maximizes durability and increases strength, all while decreasing overall mass. Pepetools is proud to be the only American manufacturer to produce, design, and build rolling mills in the USA.

In two high reversing rolling mills, the rolls revolve ist in one direction and then in the various others, to ensure that rolled steel may pass to and fro via the rolls a number of times. This kind is made use of in plumbing and also slabbing mills and for roughing operate in plate, rail, structural, and also other mills.

Tab 3 Types of rolls for billet and merchant bar mills : Type of roll: Surface hardness (Deg Shore) Forged steel 0.75% C, Roughing stand rolls: 35: Cast steel – 0 to 0.5% Mo + Ni, Cr, Mn, Strong, tough, resistant to fire cracking

Shore hardness is about 40-60, used in roughing mills of large, medium and small steel rolling mills and steel plate rolling mills. (3) Hard surface roller. Shore hardness is about 60-85, which is used for the roughing mill of thin plate, medium plate, medium section steel, and small section steel mill and the support roll of four-roll mill.

Rolling Mill Rolls. 1. Definitions. Rolls are a tool to produce plastic deformation of the metal. It is an important consuming part to determine the efficiency and quality of the rolling mill. Roll is an important part of the rolling mill. The pressure generated by a pair or group of rolls is used to roll the steel.

You face rolling problems in the finishing mill and an increased likelihood e.g. of tail end breaks. This is where camber-free rolling comes in. It's based on the interaction of roll alignment control integrated in our automation system and strong, position-controlled side guides in the roughing mill stand entry and exit sections.

Hot Rolling Mill Rollers of Steel Mills 1. Department of Metallurgical and Materials Engineering, IIT Kharagpur Course:- Material Design and Selection A brief presentation on Hot rolling mill rolls (steel plant) Basic funda " The Chemical Composition and Microstructure of the roll need to be changed for different stands, from roughing till finishing stand " …

Today, cold and hot strip mills around the globe are continuously looking for ways to increase their productivity, save energy, lower their overall costs and improve the final quality of their products. Using lubricant in cold rolling and controlling the roll-wear in hot rolling are some of the ways to achieve these goals.

Rolls For Rolling Mill Rolling mill rolls for the 1st stage i.e. Roughing stand, followed by intermediate stands & finishing stands can be offered, as per the client's requirements. Spheroidal Graphite (S G) Iron Rolls Spheroidal Graphite Cast Iron (S G Iron) or Ductile Iron is considered as one of the most versatile roll materials now a days.

rolls for rolling mill. 1. INTRODUCTION MACHINERY AND METALLURGICAL ROLLS USED IN ROLLING MILL SINOM GROUP CO., LTD. ROLLS BRANCH FACTORY 2016 VERSION. 2. [email protected] Machinery and Metallurgical Rolls SINOM GROUP CO., LTD. ABOUT US Rolls branch factory is a specialized manufacturer of rollers …

Roughing rolling mill is a machine for rolling steel. Rough rolling is in the middle of heating and intermediate rolling mill, and its function is to process the heated slab by a roughing rolling mill into an intermediate blank that satisfies the finishing requirements (specification, temperature, surface quality, plate type).

Applications: These rolls are suitable for Roughing and Intermediate Mill stands of Blooming/Slabbing, TMT Bars Mills and Wire Rod mills. Rolls for Intermediate and Finishing Stands of Structure and Strip Mills. Common Grades: SG P 47 (45°-50° Sh C) SG P 53 (50°-55° Sh C) SG P 57 (55°-60° Sh C) SG P 63 (60°-65° Sh C) Mechanical Properties:

At present, there is a trend of using bucket steel rolls to replace forged steel rolls. The roll of the 6VH billet continuous rolling mill in the Baosteel blooming mill is made of forged semi-steel and forged cast iron with 1.7% ~ 2.4% C, which has good wear resistance and poor hot crack resistance.

ROLLING MILLS ROLLS : Rough Stand Rolls. ROUGHING STAND ROLLS We manufacture roughing mill rolls from diameter 300 mm to 600 mm and length from 600mm to 1200mm. The hardness of these rolls ranging from 45 degrees to 55 degrees shore C. INTERMEDIATE STAND ROLLS These rolls are manufactured in the sizes of 250mm to 360mm in diameter and length ...

's Rolling Mill Rolls Support the World Steel Industry. In 1961, became the first company in the world to adopt the "centrifugal casting" method for the production of mill rolls. It enables to produce a multi -layer composite rolls, which revolutionized mill roll material .

5. Cluster Rolling Mills: In this type of rolling mill, there are two basic roles that are backed up by two or more rolls which are bigger than those two basic rolls. These backed up rolls give more pressure to the basic rolls to heavily press the strip.

These cast rolls have good strength, generally used for the rough rolling backup roll of square slab rolling mills, large-scale steel billet rolling mills, rail beam rolling mills and two-roll strips roughing mills. It also can be worked as large vertical rolls for broken scale racks, rough rolling mills for section steel & bar and wire rod mills.

Some critical grades are heat treated for higher strength. Chemical composition and structure are chosen to suit specific application. Application: Roughing and intermediate rolls for slabbing and blooming mills. Roughing, intermediate and finishing for rail and structural mils. Finishing for wire rod and narrow strip mils.

Getting started; Roughing Mills; Roughing Mills - China Manufacturers, Factory, Suppliers. We offer great strength in quality and development,merchandising,sales and marketing and operation for Roughing Mills, Roughing Rolls, Induction Furnace Crucible, Steel Rebar Rolling Plant,Rolling Mill Machinery Price.We are looking forward to cooperating with all customers …

G. Engberg, L. Karlsson, in Fundamentals of Metallurgy, 2005 11.5.1 Hot rolling. Mill data from the hot strip mill has been used to calculate the mean flow stress in each pass, assuming the material to be elastic – ideally plastic. The roll force model used was a classical slab method with constant friction assumed in the roll gap. For the roughing mill (reversible 4-high) both roll …

MBI Rolls, a division of M. Brashem, Inc., has provided the best value for quality, price and service to the steel industry for more than 30 years. We are a leading distributor of mill rolls to the north American steel mill industry, with significant share of the long bar market.

Our rolls are used in very diverse rolling mills throughout the world. Here is a selection of the most frequent plant configurations. ... Combined Steckel / heavy plate rolling mill with roughing stand: this modified form of the combined Steckel / heavy plate rolling mill additionally has a roughing stand. Product data sheets Download factsheets .

send to the roughing train of the mill for rolling process. b) Roller table: To discharge the hot blooms/billets/slabs to rolling mill for rolling operation. III. Mill Section: To roll the hot blooms / billets / slabs etc. into desired shape by passing it between set of revolving rolls. The rolls may be plain or grooved rolls depending on product.

ROLL SELECTION OF MATERIAL FOR VARIOUS TYPE OF ROLLING MILLS. Silvan Rolls, as a result of the work we have done with deep experience and knowledge of years, we have a roll quality selection table that we believe to help the rolling mills who are our main customers to choose the sphero and steel-based roll qualities in our product range for use in …

HSS rolls, often installed in the earlier stands of hot strip mills, provide improved wear resistance along with a better surface roughing resistance. However, HSS are rolls more sensitive during operation and require a higher grade of attention with regard to roll cooling than High-Cr rolls. HSS rolls need an adequate mill operating environment

Cluster rolling mill or sendzimir rolling mill: Each of the working rolls is supported by two backing rolls. Here rigidity is well maintained. Cluster rolling mills are used for the high draft. Typical arrangement of rollers for rolling mill: Continuous rolling mill: Uses a series of rolling mill and each set is called a strand.