Cold Rolling Fundamentals


Schedule

16–19 September 2024 • The Westin Cleveland Downtown • Cleveland, OH, USA

Sunday, 15 September 2024

4–6 p.m.

Registration

5–6 p.m.

Reception

Monday, 16 September 2024

7 a.m. 

Registration and Breakfast

8 a.m. 

Introductions and Opening Remarks
Brian Smith, ANDRITZ Metals USA Inc.

8:10 a.m.

Overview of Cold Rolling
Brian Braho, Braho Machinery LLC

9 a.m.

Break

9:20 a.m.

Cold Rolling Fundamentals
Brian Braho, Braho Machinery LLC

10:10 a.m.

Break

10:30 a.m.

Rolling Mill Designs
Mark Zipf, SMS Group Inc.

11:10 a.m.

Line Arrangements
Konrad Krimpelstätter, Primetals Technologies Japan
Overview of different cold rolling mill types and mill/line arrangements, classification of rolling operations, primary components of the cold rolling mill, rolling mill actuators, bending blocks, roll stack deflection, mill drive concepts, etc

Noon

Lunch

1 p.m.

Mill Terminal and Auxiliary
Frank Beddings, Primetals Technologies USA LLC
Introduction to the terminal equipment for different types of cold mills. The function of the terminal equipment is to properly transport/prepare the coils/strip to and from the cold mill stand, as well as provide tension control, process measurements, and inspection.

1:55 p.m.

Break

2:10 p.m.

Mill Measurement Instrumentation
Brian Smith, ANDRITZ Metals USA Inc.​

2:50 p.m. 

Motors and Drives Upgrades
Thomas Richards, TMEIC Corp. Americas
Discussion of things to consider for your motor and drive upgrade project.   

3:35 p.m.

Break

3:50 p.m.

Hot Band Characteristics That Influence Cold Rolling
John Manko, Outokumpu Stainless USA LLC
Discussion of meltshop and hot strip mill influences on cold rolling performance and defects and product dimensions off the caster and hot strip mill that cause cold rolling issues

4:40 p.m.

Roundtable Discussion

4:55 p.m. 

End-of-Day Wrap-Up and Adjourn

Tuesday, 17 September 2024

7 a.m.

Breakfast

8 a.m.

Rolls Manufacturing and Materials Requirements
Konstantin Redkin, WHEMCO Inc.
This portion of the course will focus on understanding rolls’ service life cycle from manufacturing steps to the final scrap diameter. Emphasis will be made on understanding the basics of the mill loading during cold rolling, using finite element analysis of the 4-high roll stack. The cold work roll’s material requirements will be discussed based on modern damage tolerance criteria. Microstructure evolution and residual stress in the roll ingots and depth of hardening will be covered by explaining manufacturing thermomechanical routes.

8:50 a.m.

Break

9:10 a.m.

Bearing Usage in Mill Stands: Understanding Premature Damage and Drivers for Unplanned Downtime
Mike Allega, The Timken Co.
Maintenance of mill stands and wear accelerate bearing consumption and drives repeated damage that may lead to a line down situation. The topic covers various sources of wear and maintenance that drive bearing damage.

9:40 a.m.

Roll Shop Practices: What Do Roll Shops Do for Your Mill?
Christopher Pace, Cleveland-Cliffs Cleveland Works LLC
This presentation will discuss how roll shops provide quality and safe products in a timely manner to their customers.

10 a.m.

Break

10:50 a.m.

Cold Mill Defects and Quality
Katie Behrendt, Nucor Steel–Arkansas​
Overview of common incoming and outgoing quality characteristics in the cold rolling process. Discussion of defects, possible root causes, and suggestions for correction and prevention.

11:10 a.m.

Key Technologies for Cold Rolling Advanced High Strength and Electrical Steels
Konrad Krimpelstätter, Primetals Technologies Japan
Market demands and trends for advanced high-strength steels (AHSS) and electrical steels, requirements and challenges for cold rolling of AHSS and electrical steels. Key technologies and solutions for a successful production of AHSS and electrical steels including small work roll diameter solutions, mill stand technologies and shape control capability, strip heating and strip temperature guidance, advanced roll-gap lubrication and cooling, anti-chatter devices, etc.      

Noon

Lunch

1 p.m.

Sources of Mill Stand and Roll Neck Bearing Damage
Mike Allega, The Timken Co.

1:30 p.m.

Cold Rolling Theory Basics
Konrad Krimpelstätter, Primetals Technologies Japan and Leland Robinson, Novelis Inc.
Preliminary concepts and terminologies, material mechanics, roll bite mechanics, power of prediction, adaption and validations, etc.

2:30 p.m.

Break

2:50 p.m.

Cold Rolling Lubrication Fundamentals

3:50 p.m.

Break

4:10 p.m.

Mill Roundtable
Katie Behrendt, Nucor Steel–Arkansas, Moderator

4:55 p.m.

End-of-Day Wrap-Up and Adjourn

5 p.m. 

Reception 

Wednesday, 18 September 2024

7 a.m.

Breakfast

8 a.m.

Automatic Gauge Control Basics
Brian Braho, Braho Machinery LLC
This presentation will provide an overview of automatic gauge control, including a description of the feedback control loop along with a discussion of common sources of error. Other topics included will be feedforward corrections, single- and multi-stand control diagrams, and thread-to-run sequences

9:15 a.m.

Break

9:35 a.m.

Flatness Measurement and Control
Leland Robinson, Novelis Inc.​

10:50 a.m.

Break

11:10 a.m.

Mill Chatter and Vibration
Bob Miller, IVC Technologies
This presentation is an overview of rolling mill and roll grinder chatter and vibration. It has a variety of real-world examples and should provide takeaways for both novices and those with a vibration background.

Noon

Lunch

1 p.m.

Rolling Solution System and Maintenance

1:30 p.m.

Strip Drying

2 p.m.

Break

2:15 p.m.

The Importance of Mill Alignment

3:20 p.m. 

Break

3:35 p.m. 

Leadership, LEAN Philosophy, Purpose, and Troubleshooting Examples
John Manko, Outokumpu Stainless USA LLC
Discuss Leadership methods, LEAN tools, culture and how those fit relative to troubleshooting and typical mill daily activities.

4:05 p.m.

Cold Mill — What Have You Learned?
Brian Smith, ANDRITZ Metals USA Inc.

4:35 p.m.

Roundtable Discussion

5 p.m.

End-of-Day Wrap-Up and Adjourn

Thursday, 19 September 2024

7 a.m.

Breakfast

8 a.m.

Plant Tour of Cleveland-Cliffs Cleveland Works LLC

Noon

Return From Plant Tour and Conference Adjourn