Method for hardening camshafts and linear inductor for the...

C - Chemistry – Metallurgy – 21 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C21D 1/10 (2006.01) C21D 9/30 (2006.01)

Patent

CA 2280501

The invention relates to a method for hardening camshafts, wherein the cams (5a, 5b, 5c) of the camshaft (4, 12-17) are simultaneously hardened in groups during rotation of the camshaft (4, 12-17) and wherein one group (5, 18, 19, 20) is heated by means of induction while the area of the camshaft (4) that is not to be hardened and bordering on said group (5, 18, 19, 20) is protected against heating by a cooling device. According to the invention, said method is characterized in that the groups (5, 18, 19, 20) of cams (5a, 5b, 5c) to be hardened are simultaneously hardened by means of a linear inductor (1), in that the cams (5a, 5b, 5c) are first heated in at least one time interval (A, C) at low power (L1) and then heated at high power (L2) in another time interval (E), and in that said time intervals (A, C, E) are separated from each other by a pause (B, D) during which no power is supplied.

L'invention concerne un procédé pour tremper des arbres à cames, selon lequel les cames (5a, 5b, 5c) de l'arbre à cames (4, 12 à 17) sont trempées simultanément par groupes alors que l'arbre à cames (4, 12 à 17) tourne. Pendant le chauffage par induction d'un groupe (5, 18, 19, 20), la zone de l'arbre à cames (4) qui n'est pas à tremper et est adjacente à chacun des groupes (5, 18, 19, 20), est protégée des effets de l'opération de chauffage à l'aide d'un dispositif de refroidissement. Selon l'invention, un procédé de ce type se caractérise en ce que les groupes (5, 18, 19, 20) de cames (5a, 5b, 5c) à tremper sont trempés simultanément à l'aide d'un inducteur linéaire (1). Le chauffage des cames (5a, 5b, 5c) intervient d'abord dans au moins un intervalle temps (A, C) à faible puissance (L1), puis dans un intervalle temps (E) à puissance élevée. Les intervalles temps (A, C, E) sont séparés l'un de l'autre, chacun par un intervalle de temps de pause (B, D) au cours duquel aucune puissance n'est acheminée.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method for hardening camshafts and linear inductor for the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for hardening camshafts and linear inductor for the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for hardening camshafts and linear inductor for the... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1711472

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.