C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
C21D 9/28 (2006.01) B21J 5/06 (2006.01) B21K 1/06 (2006.01) B60B 35/08 (2006.01) C21D 1/02 (2006.01) C21D 1/28 (2006.01) C21D 8/04 (2006.01) C21D 8/10 (2006.01) C21D 11/00 (2006.01) C22C 38/04 (2006.01)
Patent
CA 2707502
The present invention relates to an axle forged from seamless tubes, with a chemical composition suitable to guaran-tee high fatigue strength, improved yield strength and tensile strength, and having reduced weight for use on railroad vehicles. The present invention further relates to a process of manufacturing the axle forged from seamless steel tube with high fatigue strength, improved yield strength and tensile strength, and having reduced weight for use on railroad vehicles, which is produced from pig iron or scrap, casting, reheating furnace, perforation of billets, elongation of perforated billets, hollow finishing, forging and finish machining, which includes a supporting and centering chamfer at the inner edge of the inspection bore of the end and smooth recess in the entrance of the threaded bores.
L'invention porte sur un essieu pour véhicules de chemin de fer qui est forgé à partir de tubes sans soudure, dont la composition chimique permet de garantir une résistance élevée à la fatigue, une limite d'élasticité et une résistance à la traction améliorées, et dont le poids est réduit. L'invention concerne également un procédé de fabrication de l'essieu précité, que l'on produit à partir de gueuse de fonte ou de ferraille qui sont coulées, réchauffées dans un four de réchauffage, les billettes étant perforées, les billettes perforées étant ensuite allongées et soumises à un finissage creux, à un forgeage et enfin à un usinage de finition, un chanfrein de support et de centrage étant formé sur le bord interne de l'alésage d'inspection du tube à une extrémité de ce dernier et une cavité lisse étant formée à l'entrée des alésages filetés.
Faria Antunes Ronaldo
Filho Jose Antonio
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
V. & M. Do Brasil S/a
LandOfFree
An axle from a seamless tube for railroad vehicles, and a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with An axle from a seamless tube for railroad vehicles, and a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An axle from a seamless tube for railroad vehicles, and a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1464239