Q. What are the optimal temperature and humidity parameters when spraying solid-film lubricants? Also, what are the most extreme yet allowable conditions for temperature? —D.G.
A. Without knowing the exact product you are using, it is difficult to give you a definitive answer as to the optimal temperature and humidity parameters. Most sprayed solid-film lubricants will dry at room temperatures of 70°F or higher. I would recommend checking with your supplier for the manufacturer’s specific parameters for application, which can usually be found on technical data sheets.
It should be noted, however, that substrate preparation is crucial. It is good standard operating procedure to make sure the parts are cleaned, degreased and dried to room temperature before application. If parts are wet and extremely cold, it could have an effect on the bonding of the film to the surface. It is particularly helpful if the parts to be lubricated can be pre-heated to 140-180°F before applying these types of products.
Again, your supplier should be able to provide you with the specifics on application and temperature parameters.