This issue includes the following articles:
- Efficient Changeover of Roll Form Tooling
- Answers from the Doctor: Preventing cracking at the radius and material pick up by rolls which gives marking on profiles
- Roll-Kraft’s Vice President of Tube Mill Engineering, Robert A. Sladky will be presenting, “Tube and Pipe Mill Set Up” on Wednesday, March 21st. from 10:15AM—12:15PM at Fabtech’s first conference in Canada - Fabtech Canada 2012
- Join Roll-Kraft at Fabtech Canada 2012
- Tech Video: Troubleshooting roll forming tooling
- Video Gallery
- Tech Articles
- Let Us Know What You Think
- Submit Article Ideas
- Training
- Request a Quote
- About Us
- Tell a Friend
- Customer Testimonials
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Efficient Changeover of Roll Form Tooling
Author: Tim Nahm, Project Manager
Everyone’s heard the saying “time is money.” This applies to changeovers on your tube, pipe and roll forming mills. When the line is down during changeovers and setups, you are not producing sellable parts so it makes sense to minimize this downtime as much as possible. For those that do not have rafted mills or mills with some type of automated changeover system, click here to learn five things to consider.
Have a technical question for us? Click here to learn how to receive a gift when submitting your question. With your permission, we may also feature your question in an upcoming issue of the Pharmacy.
Answer provided by: David L. Rostocil Sr., Director of Product Applications
Symptoms
During the roll forming of stainless steel 409m, 10 mm thick, the problem of cracking at radius was found. Another problem is of material pick up by rolls which gives marking on profiles. Please suggest precautions in forming the hat & Z profiles.
Medicine
When changing the forming process from coil to pre-cut blanks, typically we add 1/3rd more passes. We would add two (2) feed passes to hold the material from walking back and forth. We would also add a few more forming passes to slow down the forming progression (this helps the material from taking a big hit when entering the next pass). Depending on the profile, we would also add a double finisher so we would have a pull-out pass. Sometimes, if necessary, we would add flat guides between passes to hold the material flat as possible when forming the material from pass to pass. This helps to stabilize the profile as it is being formed.
Roll-Kraft’s Vice President of Tube Mill Engineering, Robert A. Sladky will be presenting, “Tube and Pipe Mill Set Up” on Wednesday, March 21st. from 10:15AM—12:15PM at Fabtech’s first conference in Canada - Fabtech Canada 2012
Join Roll-Kraft at Fabtech Canada 2012
Click here to for more information and to register.
Tech Video: Troubleshooting roll forming tooling
Video Gallery
Let Us Know What You Think
If you have a suggestion for how we can improve the next issue, please email shynd@roll-kraft.com or sbetts@roll-kraft.com. You will automatically be entered into a drawing to win a Nintendo Wii.
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Have an interesting article idea or a tough technical question for the next issue of the Tube and Pipe Pharmacy? We welcome your contribution.
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Customer Testimonials
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Other Helpful Links
- Regional Seminars
- RPM Calculations
- SQ Rect. Calculation
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- Roll Forming Products
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Social Media
February 22, 2012 at 8:43 am |
Great article on "Efficient Changeover of Roll Form Tooling". I’ve read some cool information about roll former machines on Industrial Machinery News that relate to the very same thing.
Thanks,