Cold Rolling Fundamentals


Schedule

20–23 February 2023Hilton Palacio del Rio • San Antonio, Texas, USA

Tour of Steel Dynamics Inc. – Flat Roll Group Southwest-Sinton Division


►Download Program (PDF)

Sunday, 19 February 2023

4–6 p.m.

Registration

Monday, 20 February 2023

7 a.m.

Registration and Breakfast 

8 a.m. 

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

8:10 a.m.

Overview
John Speer, Colorado School of Mines
Discussion will include a general overview of products, metallurgy and processing from steelmaking to finishing, including product properties, end users and applications.

9 a.m. 

Break

9:20 a.m. 

Cold Rolling Fundamentals
John Speer, Colorado School of Mines
This presentation will cover deformation and metallurgical properties, iron-carbon phase diagram, grain size, stress-strain relationship, work hardening, effects of annealing, effect of percent reduction on R and N values, and effect of composition on properties.

10:10 a.m.

Break

10:30 a.m.

Rolling Mill Designs
Mark Zipf, SMS group Inc.
This presentation provides an introduction into contemporary rolling mill designs, with a special emphasis on how evolving material and process requirements directed their specific developments. Working outward from the roll bite, key parameters and “rules of thumb” are identified, in both the longitudinal and transverse directions, to illustrate how the force-loaded conditions/reactions dictate certain mill selection and sizing philosophies. This leads to a review of the various vertically oriented roll stack and structurally supported roll cluster arrangements, along with their associated roll gap and shape actuation strategies.

11:15 a.m.

Line Arrangements

Noon

Lunch

1 p.m.

Mill Terminal Equipment
Frank Beddings, Primetals Technologies USA LLC
An introduction to the design and function of cold mill terminal equipment.

1:50 p.m.

Break

2:05 p.m.

Mill Measurement and Actuation Systems
Brian Smith, ANDRITZ Metals USA Inc.

2:50 p.m.

Motor and Drive Upgrades
Thomas Richards, TMEIC Corp. Americas
Presentation includes items to be considered when planning an upgrade to the motors and drives. Pros and cons of various approaches will be discussed.

3:35 p.m. 

Break

3:50 p.m. 

Hot Band Characteristics That Influence Cold Rolling
John Manko, Outokumpu Stainless USA LLC
This presentation will discuss melting and hot rolling defects and hot band characteristics that impact cold-rolled sheet.

4:40 p.m.

Roundtable Discussion

5 p.m.

Adjourn

5–6 p.m.

Reception

Tuesday, 21 February 2023

7 a.m. 

Breakfast 

8 a.m.

Rolls Manufacturing and Materials Requirements
Konstantin Redkin, WHEMCO Inc.
The lecture will cover the basics of rolls manufacturing, materials requirements, aspects of non-destructive testing and modern mill trends.

8:50 a.m. 

Break

9:10 a.m.

Roll Shop Practices: What Do Roll Shops Do for Your Mill?
Lewis Graff, Steel Dynamics Inc. – Flat Roll Group Southwest-Sinton Division
This presentation will outline the importance of the roll shop as a critical partner in a successful rolling process.

10 a.m. 

Cold Mill Defects and Quality
Katie Behrendt, Nucor Steel–Arkansas
Overview of common incoming and outgoing defects for cold rolling. This will include descriptions of defects, possible root causes, and suggestions for corrective and preventive action.

10:50 a.m.

Break

11:10 a.m.

Key Technologies for Cold Rolling of AHSS and Electrical Steels
Konrad Krimpelstaetter, Primetals Technologies Austria GmbH
This presentation will discuss: Market demands and trends for advanced high-strength steels (AHSS) and electrical steels, and requirements and challenges for cold rolling of AHSS and electrical steels. Key technologies and solutions for a successful production of AHSS and electrical steels include: Small-work-roll-diameter solutions, mill stand technologies and shape control capability, strip heating and strip temperature guidance, roll gap lubrication and cooling, anti-chatter devices, etc.

Noon 

Lunch

1 p.m.

Cold Rolling Theory Basics
Leland Robinson, Novelis Corp., and Mark Zipf, SMS group Inc.​

2 p.m.

Break

2:20 p.m. 

Cold Rolling Lubrication Fundamentals
Brad Wellensiek and William Hartley, Quaker Houghton​
The presentation will cover the usage of cold rolling oilsModerator: Katie Behrendt, Nucor Steel–Arkansas during the lubrication process.

3:20 p.m.

Break

3:40 p.m. 

Mill Roundtable Discussion
Moderator: Katie Behrendt, Nucor Steel–Arkansas

5–6 p.m.

Reception

Wednesday, 22 February 2023

7 a.m. 

Breakfast 

8 a.m.

Automatic Gauge Control (AGC) 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 a.m. 

Break

9:20 a.m.

Automatic Flatness Control (AFC) Shape/Flatness Basics
Leland Robinson, Novelis Corp.​

10:30 a.m.

Break

10:50 a.m.

Rolling Mill Chatter and Vibration
Jim Smith, IVC Technologies
This presentation provides an overview of chatter that occurs in rolling mills in its various forms including first octave, third octave, fifth octave as well as grinder chatter. Areas covered will be how and where chatter can show up, some of the associated effects on equipment and product, as well as measures that can be taken to minimize or mitigate the issue

Noon

Lunch

1 p.m. 

Rolling Solution System and Maintenance
Brad Wellensiek, Quaker Houghton
This presentation will focus on cold rolling lubricant fundamentals. It will include information on key components of rolling oils and how lubrication is important in the cold rolling process. It will provide an examination of the roll coolant system and its various components.

1:30 p.m. 

Air Blow-Off and Dry Strip Systems
Adam Junkin, ArcelorMittal Dofasco G.P.
Strip drying is an important quality aspect of pickling and cold rolling with various failure modes that will be discussed

2 p.m.

Break

2:15 p.m. 

The Importance of Mill Alignment
Adam Junkin, ArcelorMittal Dofasco G.P.
Mill alignment is another critical aspect to high throughput and quality production.

3:15 p.m.

Break

3:30 p.m.

Cold Mill Safety

4:15 p.m.

Cold Mill – What Have You Learned?
Brian Smith, ANDRITZ Metals USA Inc. and Katie Behrendt, Nucor Steel–Arkansas

4:45 p.m.

Roundtable Discussion

5 p.m.

Conference Adjourn

Thursday, 23 February 2023

7 a.m.

Breakfast

8 a.m

Plant Tour of Steel Dynamics Inc. – Flat Roll Group Southwest-Sinton Division ​

2 p.m.

Return From Plant Tour and Conference Adjourn