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Lubricants for Pre-Painted Stock and Their Removal
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English
Abstract
With the increased consideration and usage of pre-painted metal in automotive and other manufacturing operations, there is a corresponding increased appreciation (understanding) that lubricants are needed to assure reliability of the process. This assurance relates directly to formability and mar resistance following forming and drawing operations. Evidence has been generated to illustrate the following advantages by use of specially designed lubricants.
- 1. Improved formability and drawability.
- 2. Improved paint adhesion through the forming operations.
- 3. Paint mar resistance.
- 4. Metal shear characteristics.
- 5. Anti-blocking properties.
- 6. Interim raw edge protection.
The majority of lubricants proposed for application over paint at the coil coating site are of the dry film type to impart scuff resistance and consistent adhesion integrity of lubricant to paint. Most lubricant films can be easily removed using heated mild alkaline cleaning solutions. Good rinsing is imperative to assure a blemish free surface and promote good topcoat paint adhesion.