The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1982
Filed:
Jan. 21, 1980
Valter Boehm, Cesky Tesin, CS;
Veslav Marosczyk, Trinec, CS;
Antonin Cieslar, Trinec, CS;
Miloslav Bartuska, Prague, CS;
Karel Rybak, Prague, CS;
Karel Zverina, Prague, CS;
Eduard Zelezny, Prague, CS;
Vysoka skola chemicko-technologicka, Prague, CS;
Abstract
A method of bonding at least two types of refractory ceramic materials, a first material being, for example, fireclay and a second material being, for example, alumina, to each other in order to enhance both the abrasion and corrosion resistances of heat resistant plates for valve closures of foundry ladles. The second, thermally more resistive material, which is applied to the first material in the form of relatively small particles, is preheated on at least the outer surface layers of the particles, the entire volume of the particles usually being preheated or even molten. The bonding of the two preheated materials occurs in such a way that minute particles up to drops of the second, thermally more resistive material are thrown at high speed (with high kinetic energy) onto the preheated surface of the first material. The source of such a relatively high kinetic energy can be constituted by either an explosion or a plasma beam ejected at a high outlet velocity out of the mouth of a plasma torch.