Page 15 - ITAtube Journal 1-2021

Technical Papers
Thanks to above said strip edge holding feature by ODF endlessly rotating die-set, NKT has ever supplied 30” ODF which is capable to roll form the pipe from both
of sheet and coil mother material, this is evaluated as “hybrid forming” process style production line.
Further to above ODF technology application in “BD : forming section”, another applica- tion had studied and this had been adapted in “SQ : welding section” as well, which would ideally suit in laser welding pipe line.
This welding line consisting of ODF-BD (forming stands) + ODF-SQ (welding stand) had been supplied with laser welding and this shows un-comparably stable and con- sistent strip edge facing condition against conventional two-roll style welding stands and as result, this have implemented speed up of the capable weld speed up to 40m/min. as pilot case with WT 1.0mm pipe.
Through this ODF-SQ technology develop- ment process, NKT had many tests in the shop and it’s confirmed that strip edges are constrained quite stably at ODF-SQ position, showing quite small “fluctuation” even by running around speed 40m/min.
Please find below test measurement result and comparison picture for edge facing con- dition between conventional SQ stand (left) and ODF-SQ unit (right)
NKT keeps developing the new design which is to adapt in hardware and in software for machines, with pursuing the unique, only- one technology, and believes this will provide the benefit to our customers towards the future.
30” ODF strip in forming process
2” ODF-SQ for Laser welding line
4” ODF-SQ welding test
ITAtube Journal 2021 – Special Edition
15
NAKATA MFG.Co. Ltd.
3-7-6 Tagawa 532-0027 Osaka Japan
Tel: +8166303 1900 Fax: +8166303 1905
sales@nakata-mfg.co.jp www.nakata-mfg.com