Have you ever noticed horizontal stripes or ripples on your coated parts? This is called “chattering.” It doesn’t just look bad; it ruins the optical and electrical performance of your part. These stripes are usually caused by tiny vibrations during the coating process. Here is why it happens and how a good motor fixes it.
1. Why Stripes Happen
As a part leaves the liquid, a small curve of liquid called a “meniscus” forms. If your machine vibrates, this meniscus shakes. This shaking makes the liquid stick unevenly to the part. Once dry, these uneven spots look like stripes.
2. The Problem with Cheap Motors
Basic dip coaters often use standard stepping motors. These motors move in tiny, jerky steps. At very slow speeds, these jerks create vibrations that shake the liquid. This is the main cause of chattering.
3. SDI’s Zero-Vibration Design
SDI dip coaters are built for perfectly smooth movement. We use advanced motor control to remove these jerky steps entirely. Even at our ultra-slow speed of 1 nm/sec, our machines pull parts out without causing a single ripple in the liquid. This gives you a flawless, mirror-like finish.
Summary
To stop stripes, you must stop vibrations. If changing your liquid or speed doesn’t help, your machine is likely the problem. SDI’s vibration-free technology will take your coating quality to the next level.
▼ Check SDI’s Vibration-Free Product Lineup
https://www.sdicompany.com/en/products