Abstract
A considerable body of information is available concerning the degree of cleanliness required in a metal surface prior to coating. Indeed much has also been said relative to the need for a finite profile on this surface. There has been little direction given, however, to just how this profile is to be obtained.
The purpose of this paper is to determine the means by which a system may be evolved for determining the most efficient and least costly method of producing a specified profile on a grit blasted surface as applied to the transportation industry.
Such a system - once developed - will be invaluable to applicators of finishes and coatings in the transportation industry. The reason for this is that profile on the parent surface usually determines the degree of adhesion of the coating as well as the amount that must be applied to achieve optimum corrosion resistance. Profile, therefore, is one of the major factors which must be considered in surface preparation. Obtaining and maintaining the proper profile can be of the greatest importance to the total economics of the entire finishing or coating operation. The purpose of this paper is to set the background for the studies which will be required to formulate a workable system.
First however, it is considered advisable to trace the development of grit blasting to its present form and to investigate some of the parameters which determine the depth of profile thereby obtained.
