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:
Sep. 15, 1981
Filed:
Feb. 21, 1979
Applicant:
Inventors:
Felix Wallner, Linz, AT;
Walter Lugscheider, Linz, AT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23G / ; B24C / ;
U.S. Cl.
CPC ...
134-7 ; 51320 ; 134 36 ;
Abstract
An austenitic steel surface is cleaned of ferritic contaminations and other impurities by blasting it with a wet abrasive mixture containing 40-90% by volume, of corundum having an average grain size of 0.2 to 0.6 mm and of triangular faces. This wet abrasive mixture is accelerated and applied to the surface under a gas pressure of 2.5 to 5.5 atmospheres, 0.8 to 3 kg of corundum being applied per 100 cm.sup.2 of the surface to be cleaned. Before the surface has dried, a rinsing liquid is applied thereto.