Technology Committees

Cold Sheet Rolling Technology Committee Activities

►Past Activities

The CSRTC and HSRTC met jointly 15–17 September 2015, Ontario, Calif., USA. Randy Patterson, HSRTC chair, and Matt Baur, CSRTC chair, opened the joint meeting, which had 36 attendees. The attendees introduced themselves and gave a brief explanation of their company and their roles.
Representatives from the HSRTC and CSRTC reviewed AISTech session development, with the HSRTC planning five sessions and the CSRTC planning three sessions. There were a number of volunteers to serve as session chairs for both committees.
The AIST 2015 North American Hot Strip Mill Roundup was reviewed, which gives an overview of capabilities and equipment. The roundup was published in the November 2015 issue of Iron & Steel Technology.\
Hot Rolling Fundamentals — A Practical Training Seminar was reviewed. The conference will be held 21–25 February 2016 in Birmingham, Ala., USA. More information about this conference can be found on pages 148–150 of this issue.
Both committees finalized their AISTech 2017 Call for Papers topics and discussed items to be reviewed at the AIST Leadership Conference.
The producer members were encouraged to utilize the AIST Process Benchmarker® system for benchmarking their processes by entering data into the system.
Technical presentations were given on the following topics:

  • Pickling technology.

  • Eco pickled surface (EPS).

  • iBox technology.

  • Spray nozzle technologies.

  • Overview of Spraying Systems research facility.

  • Advanced high-strength steels (AHSS) (including a roundtable discussion on AHSS best practices).

Producers and suppliers discussed any challenges or successes related to the processing of advanced high-strength steels as related to their equipment.
Both groups toured their respective areas of California Steel Industries Inc. in Fontaine, Calif., USA.

Joani Phelps (right) presented a plaque of appreciation to Dave Smith (left) for hosting a tour of California Steel Industries Inc. during the CSRTC and HSRTC joint meeting.
The HSRTC toured the hot mill at California Steel Industries Inc. during its joint meeting with the CSRTC.
Joani Phelps (left) presented the CSRTC service plaque to chair Matt Baur (right).

The CSRTC met 5 May 2015, Cleveland, Ohio, USA.
The following officers were elected:

  • Chair — Matt Baur, AK Steel Corp.

  • Vice chair — Joani Phelps, AK Steel Corp. – Dearborn Works

  • Papers chair — David Price, ArcelorMittal USA

Meeting Highlights:
The Cold  Mill  Roundup  and  Cold  Mill  Fundamentals Training Seminar will be emphasized in the coming year.

The CSRTC and GTC met on 10–11 March 2015, Louisville, Ky., USA. 
The CSRTC and GTC reviewed their respective technical sessions for AISTech 2015.

The following presentations were given:

  • “Strip Shape,” by Primetals Technologies.

  • “Strip Sensor Applications,” by EMG.

  • Cold Mill Shape — Mill Survey Review,” with four mills offering feedback of mill equipment and controls, limits and typical hold criteria.

  •  “Coating Line Steering — Mill Survey Review,” with nine mills offering feedback on systems, capabilities, incoming limits and issues.

  •  “Cold Mill Marks,” by ArcelorMittal Dofasco Inc.

  •  “Issues Versus Improvements in Roll Cover Design,” by Vail Rubber.

  •  “Cold Mill Strip Cleanliness,” by Quaker Chemical Corp.

  •  “Continuous Galvanizing Line Cleaning,” by Quaker Chemical Corp.

  •  “Cold Mill Surface Cleanliness — Mill Survey Review,” on tests, performance and limits.

  •  “Coating Line Cleaners — Mill Survey Review,” on systems, tests, performance and related issues.

Producer and supplier members were given an opportunity to discuss safety-related items.

A representative from Ternium Mexico discussed the company’s process of identifying new employees by issuing them specially colored helmets. As training progresses, stickers are awarded for performance, which are displayed on the helmet, until the employee is capable of working on his/her own. The employee’s helmet is then replaced with that of a permanent status employee.

Tours of AK Steel Corp. – Rockport Works’ continuous cold mill and Steel Dynamics Inc. – Flat Roll Group Jeffersonville’s galvanizing line were held.

Both committees met on Tuesday, 5 May 2015 at AISTech 2015 in Cleveland, Ohio, USA.

The CSRTC met on 25–26 September 2014, Merrillville, Ind., USA. Of the 28 attendees, 12 were from steel producing companies. The attendees took several minutes to discuss safety incidents, changes and observations at their plants or plants they had visited. Mark Wellensiek, ArcelorMittal Indiana Harbor, led a discussion using the quality survey results that each producer representative had completed, covering rejects and reworks for the hot mill, pickle line, cold mill or PLTCM at each facility. Matt Baur, AK Steel, CSRTC chair, reviewed Cold Rolling Fundamentals — A Practical Training Seminar, scheduled for 1–5 March 2015 in Mobile, Ala., USA. Baur encouraged the attendees to promote the training course by sending people from their companies.
Vendors were asked to do a short presentation on their new products:

  • Tolket, a Buenos Aires think tank, is developing a non-contact surface emissive signal cleanliness device. 

  • Star Tool and Die, working with AK Steel Research, has a prototype projected to be released by the time of this publication.

  • Star Tool and Die also discussed the Kienzle Lubrivisor, a pulsed microchip laser light source for measuring ultrathin films of residual emulsion on the strip. It is used in Europe on cold rolling, skinpassing and coating lines.

  • ANDRITZ Sundwig uses high-pressure demineralized water and suction to keep Zn off skinpass mill rolls on galvanized lines during mill roll cleaning.

  • Schaming has a portable wireless nip pressure testing device that can be used for pressure and alignment of wiper rolls, as well as for verifying roll crowns and centering of crown.

  • Siemens VAI developed edge wipe cold mill coolant removal technology utilizing blowoff jets and suction ducts.

  • Quaker developed the SB99 scale block to reduce formation of scale after hot rolling. An upcoming trial is scheduled with AM/NS Calvert LLC.

  • Spraying Systems offers a skid-supplied zoned oiler with electric versus air-controlled nozzles.

  • SMS Millcraft Mokena uses work roll chock repair utilizing spray welding to eliminate the heat affected zone, reducing cost of chock repair.

  • ArcelorMittal is working with a Finnish camera company on a cold mill inspection system capable of viewing at 4,000 ft/minute.

  • ArcelorMittal is working with IMS for inspection at 6,000 ft/minute using a light bar and an LED camera.

  • The attendees then toured the U. S. Steel – Gary Works cold finishing facility.

The CSRTC met on 19–20 March 2014, Calvert, Ala., USA. Harald van Bracht, AM/NS Calvert and CSRTC chair, reviewed the CSRTC sessions for AISTech 2014. There were five CSRTC sessions scheduled, one being a joint session with the Hot Sheet Rolling and Computer Applications Technology Committees. He emphasized to the session chairs that they needed to continue contacting the authors to ensure that the sessions stay on topic without any commercialism.
Eric Flatty, TAPPI, presented an overview of TAPPI and how it promotes the paper and pulp industry. There is interest in holding a joint meeting so that AIST and TAPPI can learn from each other.
Other presenters included:

Steve Hayes and Dave Davis, GE Power Conversion,  “Automation in the Steel/Paper Industry.”
Gary Bretney, AM/NS Calvert, maintenance strategy at AM/NS Calvert.
Bill Cherolis, AM/NS Calvert, quality and inspection processes at AM/NS Calvert.
Ned Mansour, Lechler USA, “Roll Cooling Technology.”

The CSRTC toured AM/NS Calvert’s hot strip mill, cold rolling mill and hot-dip galvanizing line on 20 March. AM/NS Calvert recently changed ownership from ThyssenKrupp Steel USA LLC, and the CSRTC was very grateful to them for hosting both the meeting and the tour.

The Cold Sheet Rolling Technology Committee (CSRTC) met on 18–19 September 2013, Worcester, Mass., USA. The CSRTC held a joint presentation meeting with the Rolls Technology Committee (RTC). The first day consisted of four presentations: “Bearing Technology” by Tom Wojtkowski of Siemens; “Grinding Wheel Technology” by Norton Abrasives; “Advances in Forged HSS Roll Technology” by Jim Slawinski of Akers; and “Emulsifier Systems” by Peter Schellingerhout of Quaker Chemical Corp.
The CSRTC then toured both the Siemens Morgan Manufacturing facility, where Morgoil bearings are manufactured, and the Norton Abrasives factory.
The business meeting on 19 September 2013 included a roundtable discussion on safety in cold mills, led by Harald van Bracht of ThyssenKrupp Steel. He then reviewed the roll shop survey results, which was a valuable learning opportunity for the attendees.

The CSRTC met in Southfield, Mich., on 26–27 February 2013. Harald van Bracht of ThyssenKrupp Steel USA opened the meeting and welcomed the attendees. Scott Starr of California Steel Industries Inc. discussed the status of the Cold Rolling Module of the AIST Process Benchmarker™ (APB) in detail following a brief overview of the system. The parameters for the module are to be finalized by the producing members prior to the next CSRTC meeting. Mr. van Bracht led a roundtable discussion in which each mill representative presented safety procedures and experiences from his or her mill.
The focus of the meeting was to explore how steel manufacturers can help auto manufacturers achieve the strict corporate average fuel economy (CAFE) regulations. The discussion began with van Bracht presenting an energy usage comparison between the United States, Germany, China and Japan. The trends show that although China’s energy use per person is lower than other regions, its usage is increasing, and since China has a large population, it is going to require new energy. Ron Krupitzer of AISI presented, “Keeping Steel the Automotive Material of Choice as Car Companies Address CAFE Challenges,” which gave an overview of the CAFE rules and current status of the fuel economy. Chad Cannon of GM presented, “Future Body Concepts and Steel Potentials With New CAFE Standards.” Ranbir Jamwal of ThyssenKrupp Steel USA presented, “AHSS — Dominant Future Lightweight Material,” which provided an overview of the future developments of steel grades in the steel industry. GM hosted a tour of its newest stamping/frame shop facility in Lansing, Mich., where the group got an up-close view of the stamping procedures and processes to produce SUV bodies. The next meeting of the CSRTC is 7 May 2013 in Pittsburgh, Pa., during AISTech 2013.