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The easiest way to compare abrasives is to look at the price per unit (i.e., price per ton or price per pound). If only it were that easy! Unfortunately comparing the price per unit assumes that all abrasives perform the same – and we all know that is not the case.
The easiest way to compare abrasives is to look at the price per unit (i.e., price per ton or price per pound). If only it were that easy! Unfortunately comparing the price per unit assumes that all abrasives perform the same – and we all know that is not the case. Many contractors find an abrasive that works for them and that becomes their default abrasive for every project – however that approach assumes that there is one “silver bullet” abrasive that suits all projects. Unfortunately, every job that contractors face are different, and abrasive choice should be a standard consideration before starting every new project.
Mineral abrasives such as glass bead and aluminum oxide have been traditionally used in the surface finishing industry. The general perception is that they offer acceptable cleaning at a low operating cost. Often dismissed is the potential of metallic alternatives that though seemingly higher in initial procurement cost, offer several differentiating advantages in terms of recyclability, consistency of finish, repeatable results and ultimately resulting in overall, reduced operating costs.
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Pull-off adhesion testing of coatings is commonly used for product testing and qualification as well as quality control / quality assurance. However, initial adhesion values do not necessarily correlate with service life of coatings or their corrosion protection performance. Adhesion of several product chemistries to steel is examined in this study before and after immersion exposure. Results are presented within the context of laboratory corrosion testing in an effort to investigate the significance of adhesion testing in modern lining systems.
The creepage of corrosion underneath a coatings film applied to a steel test panel is often used as a performance test for the anti-corrosion properties of a coating system. Underfilm corrosion creep, also sometimes referred as scribe creep in the laboratory environment, is defined as the degree of corrosion emanating away from a scribe line underneath a coating film applied to a steel substrate.