Agricultural discs

Details Agricultural discs Agricultural discs

C - Chemistry, Metallurgy

21

D

148/51, 97/78

C21D 1/78 (2006.01)

Patent

CA 1100393

ABSTRACT OF THE DISCLOSURE Agricultural discs are given a hardened annular rim by providing a differential tempering treatment. During the tempering treatment step an annular ring of heat conductive material is placed on the outer periphery of the disc. Thus ensures that the outer edge is of greater hardness than the central portion of the disc.

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