Many people may wonder, what is the core purpose of coating the surface of ceramic substrates with a layer of special red ink during industrial precision machining?
In fact, this is a crucial step before laser cutting/drilling precision ceramics (such as alumina and aluminum nitride substrates). The core purpose is positioning and protection. The pigment is mostly acrylic or epoxy-based and does not change the substrate material.
Main functions:
Improved positioning contrast: The high contrast between light-colored ceramics (such as white/light gray alumina) and the red coating facilitates visual positioning and automatic CCD recognition, reducing drilling/cutting deviations, achieving an accuracy of ±0.02mm.
Protection and slag removal: Reduces edge chipping and micro-cracks during drilling; auxiliary gas more easily removes debris; the coating can be removed after processing by cleaning or high-temperature sintering without affecting the performance of the ceramic substrate.
"Red coating" is suitable for precision machining of ceramic circuit boards. If you have related ceramic substrate processing needs, Yuchang Laser can provide processing services. Welcome to inquire!
