C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/12 (2006.01) C22C 38/08 (2006.01) C23C 8/22 (2006.01) C21D 9/32 (2006.01)
Patent
CA 2390254
A sintered sprocket is provided in which surface pressure resistance can be improved without using a forging processing. An Fe-based sintered alloy which contains C at 0.2 to 0.5 % by weight, Mo at 0.2 to 1.0% by weight, and Ni at 0.2 to 1.0% by weight, and which exhibits a metallic structure in which an internal base layer comprises ferrite and bainite and in which the ferrite adjoins voids, is subjected to a rolling and is then subjected to carburizing and hardening.
L'invention concerne un procédé de fabrication d'une roue dentée sintérisée. Un alliage sintérisé à base de fer contient 0,2 à 0,5 % en poids de C, 0,2 à 1,0 % en poids de Mo, 0,2 à 1,0 % en poids de Ni, et possède une structure métallique selon laquelle une couche de base intérieure contient de la ferrite et de la bainite, la ferrite se situant proche d'un pore, pour former une barre et ensuite la soumettre à la carburation et à la trempe. Ce procédé permet une amélioration de la résistance et du soutient d'une roue dentée sintérisée sans utiliser de processus de forgeage.
Honda Giken Kogyo Kabushiki Kaisha
Smart & Biggar
LandOfFree
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