CLEANING AND SURFACE PREPARATION

摘要

The quality of coatings, regardless of the type, or process of application, vary greatly in terms of quality offered. One statement about pretreatment is becoming more true every day: "You can make a poor coating perform with excellent pretreatment, but you can't make an excellent coating perform with poor pretreatment!" The point is that today, with the emphasis on quality coupled with new technology in coatings (powder, electrocoat, water-based, and high solids), the shift of burden of performance is pointed directly at pretreatment. Having a solid process, which meets or exceeds expectations, must be all encompassing to address soils, metals, water quality, and the process, control, and maintenance of the pretreatment system. Here we provide a broad stroke on the basics, and hope to promote further investigation by our readers depending on the specifics of each product and their needs. The best way to begin pretreatment is with a series of questions designed to promote both specifics and generalities that have impact on the process.