http://heatheater.net/en/tags/annealing/ Recent content in Annealing on Heat Heater Hugo en-us Sat, 04 Jul 2026 00:33:43 +0800 http://heatheater.net/en/posts/pid-control-for-plastic-annealing/ Sat, 04 Jul 2026 00:33:43 +0800 http://heatheater.net/en/posts/pid-control-for-plastic-annealing/ <p><img src="http://heatheater.net/images/f602d196d31bedc7733e8fbe0bb79670.png" alt="PID control for plastic annealing"></p> <h2 id="why-we-obsess-over-pid-control-in-infrared-annealing">Why We Obsess Over PID Control in Infrared Annealing</h2> <p>We hear this all the time: why go so hard on the infrared annealing step for automotive interior parts? Here&rsquo;s the truth. It&rsquo;s about keeping dimensions rock solid and kicking stress out of the part. Without tight PID control, you&rsquo;re basically crossing your fingers and hoping. PID keeps the infrared energy steady, even when the line voltage wobbles or parts are slightly different. That matters. A lot. For automotive plastics, warping, sink marks, and locked-in stress can mean failure during crash tests or after years of heat cycling. The goal is a specific thermal path—quick surface heating to loosen molecular tension, then a controlled soak. PID makes that path repeatable, batch after batch.</p>