(19)

(11)

EP 2 872 657 A1

(12)

(43) Date of publication: 20.05.2015 Bulletin 2015/21 (21) Application number: 13740335.8 (22) Date of filing: 10.07.2013

(51) International Patent Classification (IPC):  C21D 1/74(2006.01) C23C 8/10(2006.01) C21D 9/54(2006.01) C21D 9/60(2006.01) C23C 8/02(2006.01) C21D 9/52(2006.01) C21D 9/56(2006.01) C23C 8/14(2006.01) (86) International application number: PCT/GB2013/051835 (87) International publication number: WO 2014/009727 (16.01.2014 Gazette 2014/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 10.07.2012 GB 201212251 (71) Applicants: KTS Wire Ltd Morley, Leeds LS27 0BN (GB) Air Products GmbH 45523 Hattingen (DE)	(72) Inventors: AKUH, Maximus 45523 Hattingen (DE) PLICHT, Guido 45523 Hattingen (DE) WILOCH, Kris Leeds LS27 0BN (GB) CASHMORE, Brian Leeds LS27 0BN (GB) (74) Representative: Pawlyn, Anthony Neil  Urquhart-Dykes & Lord LLP 7th Floor, Churchill House Churchill Way Cardiff CF10 2HH Cardiff CF10 2HH (GB)