Method of surface hardening a ceramic article of manufacture

Details Method of surface hardening a ceramic article of manufacture Method of surface hardening a ceramic article of manufacture

1984-05-03

1987-03-17

Silbaugh, Jan

Plastic and nonmetallic article shaping or treating: processes

Including step of generating heat by friction

162152, 1621814, 1621816, 162183, 162228, 264 56, 264 87, 264120, 264125, 502527, B28B 126

Patent

active

046506225

ABSTRACT:
The ceramic article, after molding and while in a porous condition, is surface hardened not by being placed in a kiln and exposed to high temperatures, but is operatively arranged to have a combustible gas-air mixture pumped under appropriate pressure through the porosity of its molded shape. The exiting gas-air mixture is, according to the present invention, ignited, and this causes the exterior surface of the molded shape to incandesce, with the result that the external surface hardens without causing internal stresses within the article, and also avoids causing differential thermal expansion between the exterior surface and the fiber substance of the article adjacent thereto.

REFERENCES:
patent: 3275497 (1966-09-01), Weiss et al.
patent: 4182951 (1980-01-01), Kruder
patent: 4381970 (1983-05-01), Craig et al.

Affiliated with

Also associated with

Rating

Method of surface hardening a ceramic article of manufacture 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 of surface hardening a ceramic article of manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of surface hardening a ceramic article of manufacture will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1787392