Cold spray is one of the many names for describing a solid-state coating process that uses a high-speed gas jet to accelerate powder particles toward a substrate whereby metal particles plastically deform and consolidate upon impact. The term “cold spray” refers to the relatively low process temperature involved—which is typically much lower than the melting point of the spray material. 08 January 2010
During the 20th century cheap and abundant energy made corrosion a manageable problem. This era is coming to an end. Soon, industry will find there is less funding available for corrosion prevention after adjusting for rising energy costs. At this time, management will be forced to decide whether to continue with traditional corrosion control practices or change to something new with a greater potential for energy savings. For many, this will be an extremely difficult decision to make. 13 October 2009
Responsibility for spray finishing equipment is an ongoing task. Many end users only address the issue of maintenance when the spray equipment fails to operate. As the old adage goes, “time is money.” The wise person would agree that it would be prudent to invest some time and effort into their spray finishing operation to ensure that it is properly maintained. In some cases that is easier said than done. Because the journey of a thousand miles begins with the first step, my goal is to demonstrate how that task can begin with basic and sound procedures. 15 September 2009
Improving transfer efficiency is a hot topic that is only getting hotter. First-pass efficiency has long been a top priority for those powder coating operations trying to maximize their profits and produce better parts. But with today’s soaring energy costs and the increased awareness of the environmental impact of wasted energy, the idea of generating greenhouse gases solely to spray powder that falls on the spray booth floor is less acceptable than ever. 31 August 2009
Sustainability is the new “green” and will continue to gain influence in the global marketplace. A major movement is under way that includes efforts by environmentalists, government agencies, manufacturers, consumers, and others to improve worldwide sustainability. The UV coatings marketplace, consisting of raw material manufacturers, equipment suppliers, and formulators, are using UV coating technologies to lead the sustainability effort and positively impact manufacturing, especially in the U.S. This movement is called “Sustainable UV.” 30 June 2009
It is not difficult to spot a turbulent spray booth. Simply walk into the enclosure and look at the walls and ceiling. Painters generally do not point their spray guns towards the ceiling or high up on the walls. If you find that a disproportionate amount of overspray has settled, especially in areas that are fairly remote from the painters' spray guns, you can be reasonably sure that the deposits are the result of turbulence. 07 March 2006
In industries such as office furniture, home appliance, automobile, or electrical components construction, metal pretreatment is currently used before paint application. Its purposes are the adhesion of the future paint coat and anticorrosion properties. The state of the art consists of applying phosphating salts over the surface during a complete process. 08 December 2005
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