our products

D&Q Mining is a high-tech company integrating R&D, production and sales. It provides mature products and solutions such as crushers, sand making, milling equipment, mobile crushing stations, etc., for aggregate, mining and waste recycling.

blooming mill roll pass design

Roll Pass Design IspatGuru

Jun 18, 2014· Roll pass design also includes the calculation of pressing forces and their distribution on the roll passes. Several passes are made for each section; a square or round billet or bloom acquires a specified form on each successive pass.

More

(PDF) A New Method for Roll Pass Design Optimisation

Roll wear is amongst the key criteria for devising a rational roll pass design. Rolls in a hot mill have to withstand radial loads up to 12 MN and high temperatures in the range of 900 to 1300 oC. In addition to the obvious need for resistance to breakage, there is the continuing component of roll wear that is critical to the economics of fabrication, and the geometrical tolerances of the products.

More

Fundamentals of Rolling ScienceDirect

This book discusses as well the different types of rolls for various rolling mills, including blooming, plate, sheet, sheet bar, small section, heavy product, skin passing, and cold rolling mills. The final chapter explains the purpose of roll pass design to ensure the maximum output at minimum cost as well as to reduce the roll wear to a minimum.

More

(PDF) Roll Pass design for hot flat rolling of plain

The starting point in roll pass design is to draw up the pass schedule which indicates the forms of the passes required to obtain the given profile. At the same time, the number of passes is established, as are the draught for each pass, the sequence and number of turns, distribution of the passes among the mill stands etc.2.1.

More

Roll Pass Design YouTube

Mar 09, 2018· Watch how an optimum roll pass design leads to the distribution of loads across rolls, ensuring better rolling quality and reduction in specific power consum...

More

FAG Rolling Bearings in Rolling Mills Schaeffler Group

Roll neck bearings Design conditions 4 neck have a loose fit. As a result, the chocks can be easily removed; their field of application is restricted, however, by the loose are used mainly in blooming mills, heavy plate mills and hot strip mills, where considerable axial forces occur in combination with low to moderate speeds. During

More

Rollpass Design Solutions

Roll Pass Design for TMT from 130 *130 mm in 19 pass design: 38: Bhawani Moulders, Raipur: Roll Pass Design for ISMC,ISJC and Superlite channels 75 & 100 mm in continuous structural mill: 39: Graphite India Limited Powmex Steel Division, Titlagarh,Orissa: Audit and Consultancy for production improvement and Roll Pass Design for the development of new products.

More

Roll Pass Design Schweitzer Rolling Technology

Pass Designs for ALL and EVERY possible section, from Rounds and Structural Sections to Special Shapes, from Rails to Sheet Piling. Roll Pass Design projects can include: Flow charts; Detailed pass design; Process simulation of rolling for calculating motor sizes, gear ratios, and rolling forces; Roll barrel layouts; Set-up sheets

More

A BASIC UNDERSTANDING OF THE MECHANICS OF ROLLING

As regards “abnormal” rolling conditions which are more or less very “normal” for rolling mills roll damage often occurs with consequences for the mill and the rolled product. Evidently the reasons of roll failure have to be discussed and determined (or vice versa) to reduce the risk of repeated roll

More

Slit rolling Danieli Corp.

mill is required. Pass Design The leader sections for the multiple slit rolling pro-cess, e.g. square, rectangular or round have to be of very close tolerance. This requires: * Correct pass profile in the rolls * Correct roll gap to ensure no overfill * Correct pass alignment between top and bottom rolls * Sound roll neck bearings and positive roll

More

Effect of pass schedule and groove design on the metal

using an FEM model during the initial passes in a blooming mill, as a function of three different pass schedules, roll groove depth, collar taper angle and corner radius. The simulations predicted the effective strain penetration, load, torque, fish tail billet end shapes, and metal flow behaviour at a chosen temperature, mill rpm and draft.

More

Roll Pass Design Schweitzer Rolling Technology

Roll Pass Designs projects typically follow the following timeline: Development of detailed groove drawings, roll barrel layouts, roll stress calculations, rolling power, torque and separating force predictions, and roller set-up sheets. Design review and training sessions with mill personnel

More

Roll pass design Definitions SlideShare

Jan 08, 2014· The roll designer will pick the number and size of stands, the reductions at each stand, size motors and drive systems, and design the grooves and roll barrel layouts to provide the most cost effective method of producing the given products. Design a new product to roll on an existing mill.

More

Roll Pass Design strategy SlideShare

Mar 07, 2014· A Contribution to Rolling Mill Technology _ Roll Pass Design Strategy for Symmetrical Sections by Sead Spuzic and Kazem Abhary University of South Australia School of Engineering 2 3. Keywords • roll pass design (RPD) • statistical analysis • roll wear • generic function • optimisation 3 4.

More

Rollpass Design Solutions

Roll Pass Design for TMT from 130 *130 mm in 19 pass design: 38: Bhawani Moulders, Raipur: Roll Pass Design for ISMC,ISJC and Superlite channels 75 & 100 mm in continuous structural mill: 39: Graphite India Limited Powmex Steel Division, Titlagarh,Orissa: Audit and Consultancy for production improvement and Roll Pass Design for the development

More

NUMERICAL SIMULATION IN ROLL PASS DESIGN FOR BAR

roll pass design is a preparatory sequence of the labora-tory rolling mill. The work diameter of the rolls of the two-high rolling stand was reduced to 350 mm. Two roll

More

(PDF) Automated Procedure for Roll Pass Design

Jul 03, 2008· Kwon and Im proposed a computer-aided-design system for roll pass and roll profile design to minimize trials and errors in industry [1]. Lambiase and

More

Wear of hot rolling mill rolls: an overview ScienceDirect

Aug 01, 1994· A lit- erature search has revealed no stochastic approach in modelling wear. Roll pass design exerts a vital influence on the non- uniform wear of rolls via control of loads, stresses and relative slip. In addition, the groove wall inclination has a direct influence on the radial machining required to regenerate the groove geometry.

More

A BASIC UNDERSTANDING OF THE MECHANICS OF

As regards “abnormal” rolling conditions which are more or less very “normal” for rolling mills roll damage often occurs with consequences for the mill and the rolled product. Evidently the reasons of roll failure have to be discussed and determined (or vice versa) to reduce the risk of repeated roll

More

Fin Pass Rolls JMC Rollmasters

A good roll design considers the dynamics of girth growth vs reduction and the subsequent edge distortion when determining the correct roll contour and fin angles. Reduction and Girth Control: The fin blade is a narrow roll segment that fits into the open gap at the top of the partially formed tube.

More

Computer-aided roll pass design for continuous billet mill

A mathematical model has been developed for computing the geometrical dimensions of square-diamond square pass sequence for a continuous billet mill. The model is based on derivation of shape and size factor from the geometry of the pass taking into account pass filling, pass rounding etc. Using these factors and a basic equation of spread for flat rolling, a governing equation incorporating

More

Slit rolling Danieli Corp.

mill is required. Pass Design The leader sections for the multiple slit rolling pro-cess, e.g. square, rectangular or round have to be of very close tolerance. This requires: * Correct pass profile in the rolls * Correct roll gap to ensure no overfill * Correct pass alignment between top and bottom rolls * Sound roll neck bearings and positive roll

More

Rolling mill pass design pdf WordPress

Jing, Limei 2001 Rolling mill roll design, Durham theses, Durham University. Mill, motor and the whole process of roll pass design. Roll pass design is a set of methods for determining the dimensions, shape, number, and type of arrangement of rolling mill passes. Development of a rational roll pass design for a rolling mill using performance

More

RollPass.design Specialize in hot rolling mills for

Specialize in hot rolling mills for rails, sheet piles and beams International reach with 100% involvement and local level attention Our solutions and services

More