摘要
本文介绍了一种适用于铝合金型材喷涂前使用的表面处理工艺和作用机理，并对铝合金型材涂装前处理工艺流程、主要工序和工艺特点进行了阐述。总结了铬化过程中常见的故障，分析其原因，并提出了解决方法，
The mechanism and pretreatment process for aluminum profile before spray painting are introduced. Process flow, main procedure and process feature of painting pretreatment for aluminum profile are also explained. Causes for defective chromate film are discussed and solutions are presented.
