The paper presents the developed new roll pass design and a new method of rolling in slitting passes of bar with longitudinal band, …

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 is an additional 10,000 tons can be rolled.

Roll pass designer has to first establish the balance in co-efficient of reduction between different elements of channel. Following elements of channel are to be considered separately for designing a channel section in a rolling mill. (c) p Fr - Co-efficient of reduction of Flange root. It is the skill of designer to prepare a balance approach ...

Roll pass design (RPD) is a principal factor that determines process efficiency, product quality and resource consumption. Therefore, it is important to …

element software is a powerful and reliable software to perform the design of a roll pass for rail. Thus, this procedure is really useful to give assistance in the roll design and to obtain the stock cross-section temperature distribution for the whole rolling process.

The roll pass design of the intermediate pass is conducted in a way by means of which the spread.value falls within an admissible interval, so ensurmg a good rolled product. The roll pass design of a finishing round sequence follows the same general principles as of a roughing sequence. The height of the leading oval is defined by an …

Table 2. Calculated pass design for 24 mm to 20 mm in four passes . 10 Conclusions and Outlook . The present paper outlines the process of pass design for a four-roll rolling block which can be used for the sizing of round sections. A special complexity arises because the pass design is not an alternating sequence of main and …

This approach permitted a geometrical optimization of roll passes while allowing automation of the roll pass design process, and the heuristic nature of the inferential engine …

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. This book is a valuable resource for rolling mill engineers. Table of contents. Foreword Preface 1. Phenomena Occurring during Plastic Working of Metals

2.8K views, 188 likes, 2 loves, 7 comments, 105 shares, Facebook Watch Videos from موسوعة الدرفلة وصناعة المعادن-Encyclopedia of Rolling and Metal Industries:

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 …

Having the most influence on rolling operations, roll pass design (RPD) plays a pivotal role in the quality control of rolled work-piece and in ensuring the cost efficiency …

The application of finite element simulation to the problem of roll pass design for round bar rolling is considered. Two roll pass sequences were developed by analytical methods and then optimized using 2.5D Finite Element Method (FEM). The first one is a classical oval-round roll pass design. The second one is a combination of flat rolls and

If a mill rolls 80 % of the calendar year, that is 365 x 24 x 0.80 = 7008 hours. If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the ...

The present work introduces an expert system that automatically selects and designs rolling sequences for the production of square and round wires. The design strategy is aimed at reducing the overall number of passes assuming a series of process constraints, e.g., available roll cage power and torque, rolls groove filling behaviors, etc. …

The first one is a classical oval-round roll pass design. The second one is a combination of flat rolls and round roll passes. Relying on the simulation data obtained by FEM, the roll gaps were ...

This article presents a novel roll pass design method, a numerical model and a processing procedure for producing a 3rd generation dual phase sheet steel with high strength and formability. The method integrates the load path dependent damage evolution, the thermal mechanical coupling and the caliber roll profile optimization. The article also …

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. This book is a valuable resource for rolling mill engineers. Show less. Fundamentals of Rolling presents the theoretical knowledge of longitudinal rolling in a comprehensive procedure. This ...

Roll Pass design, numerical m odel and processing procedure . of a 3 rd generation dual phase sheet steel . Taher El-Bitar a, Maha El-Meligy a, *, Mahmoud Khedr b .

The aim of this work has been to develop an automatic roll pass design method, capable of minimizing the number of roll passes. The adoption of artificial intelligence technologies, particularly expert systems, and a hybrid model for the surface profile evaluation of rolled bars, has allowed us to model the search for the minimal sequence with a tree path search.

conditions of rolling. Thus, the groove geometry, roll pass schedule and rolling mill parameters and temperature can be optimised for best product quality and yield. Kewords. Hot rolling; groove geometry; pass design; rolling load; FEM simulation. 1. Introduction The quality and productivity of hot rolled bar steel products

Reasonable design of roll pass schedule is the prerequisite for a successful shape rolling process. In this paper three dimensional elastoplastic finite element simulation with thermal mechanically coupled analysis is applied to study the roll pass design of the hot continuous rolling of Ф100mm alloy steel round bar from 200mm×200mm square …

state round-oval-round pass sequence for the production of round bars has been obtained from a flowline field solution [2]. S.-H. Kim and Y. -T. Im investigated a knowledge-based expert system which was developed for the design of roll pass and profile sequences for the shape rolling of round and square bars [3]. Y.

9.Theory of Rolling-Roll Pass designTheory of Rolling-Roll Pass design It is a Rolling Technology which deals withIt is a Rolling Technology which deals with production of desired shape …

ilar roll pass designs (RPDs) [15–24]. For the sake of simplicity, only the oval groove height and width are discussed (the complete analysis is presented in [23]). 2Caseanalysis Roll …

TLDR. This approach permitted a geometrical optimization of roll passes while allowing automation of the roll pass design process, and the heuristic nature of the inferential engine contributes a great deal toward reducing search time, thus allowing such a system to be employed for industrial purposes. 14.

This pass optimization methodology consists of two stages. Stage 1: Pass design--Reduce the number of passes of an existing sequence by substituting several improper passes of the existing sequence by alternate passes deter- mined by a well-known formula from literature (e.g. Lendl's empirical formula).

In the development of shape rolling systems, roll pass design (RPD) plays an essential role on the quality control of products, service life of rolls, productivity of rolling systems, as well as ...

Roll Pass Design ... Willibald Trinks. Penton Publishing Company, 1933 - Rolls (Iron mills) - 210 pages. 0 Reviews. Reviews aren't verified, but Google checks for and removes fake content when it's identified. From inside the book . What people are saying - Write a review. We haven't found any reviews in the usual places.

The implementation of the new roll pass design (Fig. 2b), where, among other things, a third slitting pass is introduced additionally, has caused the total required rolling reduction to be ...

Automated Procedure for Roll Pass Design F. Lambiase and A. Langella (Submitted July 3, 2008; in revised form July 12, 2008) The aim of this work has been to develop an automatic roll pass design ...

Shape rolling is widely employed in the production of long workpieces with appropriate cross-section profiles for other industrial applications. In the development of shape rolling systems, roll pass design (RPD) plays an essential role on the quality control of products, service life of rolls, productivity of rolling systems, as well as energy …

The calculation and construction of a finishing pass for rounds, proposed by the authors, are of in- terest. The principles of designing grooves for recurrent sections of hardware steel are cited. The problems of roll pass designs for the breakdown and intermediate stands are examined in the sixth chapter.

The advantages and disadvantages of single-radius roll-pass design for the production of longitudinally welded pipes of small (5–114 mm) and medium (114–480 mm) diameters in an electric-resistance welding pipe mill are discussed. Double-radius (MISiS) roll-pass design and roll-pass designs for forming the workpiece periphery with …

Roll-pass design is an essential part of shape-rolling technology. The primary goal of the roll-pass design is to ensure production of a correct profile, free of defects, with good surface quality. Traditionally, the roll-pass design was taken more as art than science. In 1969 a major work, systemizing the principles of roll-pass design, was ...

Roll pass design (RPD) is a principal factor that determines process efficiency, product quality and resource consumption. Therefore, it is important to …