Steel for carburized gear

Details Steel for carburized gear Steel for carburized gear

1995-03-02

1996-05-21

Yee, Deborah

Alloys or metallic compositions

Ferrous

Lead, bismuth, selenium, tellurium or calcium containing

420109, C22C 3844

Patent

active

055186858

ABSTRACT:
A steel for darburized gear having softening resistance, consisting essentially of, in weight percentages, 0.18 to 0.25% C, 0.45 to 1.00% Si, 0.40 to 0.70% Mn, 0.30 to 0.70% Ni, 1.00 to 1.50% Cr, 0.30 to 0.70% Mo, up to 0.50% Cu, 0.015 to 0.030% A1, 0.03 to 0.30% V, 0.010 to 0.030% Nb, up to 0.0015% O, 0.0100 to 0.0200% N and the balance consisting of Fe and inevitable impurity elements, wherein quenching at 820.degree. C. or higher after carburization does not cause any ferrite to be formed in a hardened structure of the core part of the carburized steel, and wherein, while tempering is generally performed at 160.degree. to 180.degree. C. after the quenching, reheating at any of temperatures inclusive of the tempering temperature and up to 300.degree. C. does not cause the hardness of a carburized case of the carburized steel to decrease by HV 50 or more from the one after the carburization, quenching and tempering.

REFERENCES:
patent: 4773947 (1988-09-01), Shibata et al.

Affiliated with

Also associated with

Rating

Steel for carburized gear does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Steel for carburized gear, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steel for carburized gear will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2035723