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The purpose of surface preparation is to get a required adhesion between steel and the coated film. Adhesion is a significant factor for the suitability and life of protective coatings in corrosive surroundings. In the shipbuilding industry, air blasting with round blasting nozzles is common practice for achieving the productivity and proper surface profile. Generally, the round blasting nozzle cannot evenly spread the abrasive material on a steel surface compared with a rectangular nozzle.
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The coatings industry is very familiar with shot/grit blasting as a mechanical means of surface preparation. Over the years, operators have worked with manual and automatic blast equipment with its associated dust collection arrangements. As with every manufacturing process, operating costs are very critical in this highly competitive industry. Therefore, coaters are always on the lookout for ways to tune their process and increase productivity.
The coatings industry is very familiar with shot/grit blasting as a mechanical means of surface preparation. Over the years, operators have worked with manual and automatic blast equipment with its associated dust collection arrangements. The industry is highly competitive, and control on operating costs is critical. Therefore, coaters are always on the lookout for ways to tune their process by lowering costs and increasing productivity.
At present multiple standards on blast-cleaned surfaces are in use depending on region and specifications of the project. However, most standards are relatively clear on the description of a surface some overlap each other. These overlaps are often considerate as the norm for the most comparisons between ISO and related documents, however, sometimes are significantly off. Some of these documents will be highlighted to compare the results and their impact on the coating job.
Ours is an age of stringent VOC regulations and one of the positive responses from coating formulators has been the advent of innovative high solids coatings that contain exempt solvents. While proper surface preparation for applying lining systems has always been crucial to long term coating success our field experience has shown that this is all the more the case with coatings formulated with one or more exempt solvents.
Requirements for qualification of an industrial coating and lining application specialist that includes surface preparation and coating application for steel and concrete surfaces of industrial structures.
Duplex coatings are used to protect galvanizing in harsh environments, provide aesthetics, and enhance corrosion protection. Surface preparation is critical to achieving long term performance, and abrasive blasting was found to be the most effective surface preparation technique.
This paper will focus on the application of polymeric coatings and linings, which include, but are not limited to, polyamine and novolac epoxies and vinyl esters. These materials are delivered to the job site in buckets or bags and are mixed and applied on-site, and it is the responsibility of the owner, engineer and material supplier to determine the type of material and coating system to specify for any particular project.
This NACE/EFC standard is considered as the basis for the cleaning, surface preparation, and application of paint and coating systems to Navy ships used in marine environments for New Build, and during Life Cycle maintenance and permanent repair. It is intended for use by naval corrosion control personnel, coating applicators, and coating manufacturers. It covers coating materials, coating test protocol and acceptance criteria, surface preparation, coating application, quality assurance and control, and repair methods. Its purpose is to facilitate more effective corrosion protection of Navy ships and support inter-operability requirements by presenting reliable information and providing guidelines for coating manufacturers and shipyards to develop more durable specifications.
This standard replaces NATO Allied Engineering Publication (AEP) 59.
Throughout both commercial and military industries there is a growing need for environmentally safe and cost-effective solutions capable of removing paint and coatings from a wide range of surfaces including steel, aluminum, concrete, and composites. Atmospheric Plasma Coating Removal (APCR) is the next generation of coating removal and surface preparation technology that represents a step forward in developing more environmentally responsible methods for coating removal.
A vessel docked for maintenance is a vessel out of service. For military forces, this significantly affects the readiness of that force, its ability to respond quickly and appropriately to a developing situation. It is for this reason that the United States Navy continues to search for and invest in innovations that improve maintenance turn-around times as well as innovations that keep vessels in service for longer periods of time. In large-scale construction and manufacturing industries such as shipbuilding and naval maintenance, coating removal is an essential but time-consuming process required for constructing and maintaining vessels and other structures.
This paper provides a review of key items to consider in coating wood. The most important considerations are ensuring a sound wood substrate surface, elimination of moisture as a problem, adequate surface preparation, and the proper choice of coatings. Coatings for wood can be categorized as film-forming or penetrating finishes. This paper expands on a recent related article published in the Journal of Architectural Coatings.