Process for shrink-fit locking a cylindrical ceramic part into a

Details Process for shrink-fit locking a cylindrical ceramic part into a Process for shrink-fit locking a cylindrical ceramic part into a

1986-04-07

1988-07-26

Weidenfeld, Gil

Metal working

Method of mechanical manufacture

Assembling or joining

291565R, 29DIG35, 285381, 403273, B23P 1102, F16B 400

Patent

active

047591102

ABSTRACT:
The tensile loading of a ceramic-metal joint, made by shrink-fit locking a cylindrical ceramic component into a flange of ferrous material in the axial direction of the ceramic component can be improved by undersizing the diameter D of the bore of the flange by 13-27 .mu.m making it, at room temperature, this much smaller than the diameter d of that part of the ceramic component to be attached to the flange by shrink-fit locking, by preparing the cylindrical surface of the said part of the ceramic component with a surface roughness Ra of 0.05-0.2 .mu.m and the surface of the bore in the flange with a roughness Ra of 0.4-0.8 .rho.m, and by heating the flange, before fitting it to the ceramic part, to a temperature such that, after fitting together the ceramic component and the flange, the resultant stresses produced on cooling the assembly to room temperature are below the yield strength R.sub.po.2 of the ferrous material, and the said temperature of heating is below the Wohler temperature of the ceramic material.

REFERENCES:
patent: 4297779 (1981-11-01), Melton et al.
patent: 4531269 (1985-07-01), LaBouff
patent: 4573250 (1986-03-01), Miller et al.
patent: 4624484 (1986-11-01), Wilson
"Unified Theory of Thermal Shock Fracture Initiation and Crack Propagation in Brittle Ceramics," By D. P. H. Hasselman, Journal of The American Ceramic Society, vol. 52, No. 11 (Nov., 1969).

Affiliated with

Also associated with

Rating

Process for shrink-fit locking a cylindrical ceramic part into 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 Process for shrink-fit locking a cylindrical ceramic part into a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for shrink-fit locking a cylindrical ceramic part into a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-251805