Ever wonder why brake pads squeal? It usually comes down to a curing problem. If the surface of the friction material hardens too quickly, the core stays raw. You end up with this weird tension inside the pad—basically “hot spots” and inconsistent density. That’s where the noise comes from. Getting the heat where it matters Most people just throw pads in a convection oven. The problem is, those ovens heat from the outside in. We do things differently with shortwave infrared (IR). Instead of waiting for the heat to slowly crawl toward the center, IR radiation dives deep into the organic binders and metallic fibers. It hits the molecules throughout the entire pad all at once. It’s a total shift in how the material actually cooks. Managing the power To make this work, you need some serious muscle. We use quartz-halogen emitters to push a massive amount of energy into a tiny space. This keeps the core hitting the right temperature without torching the surface. But you can’t just crank it to eleven. If you pump in too much wattage without tweaking your belt speed or dwell time, you’ll burn the resins. You need your PID tuning to be spot on so you don’t overshoot the mark. Killing the consistency gap The real goal here is uniformity. No one wants a “lucky” batch and a “bad” batch. We set up the heaters in a specific array to kill off any cold spots on the conveyor. This means every single pad gets the exact same dose of energy, no matter where it’s sitting on the rack. When the core and the surface cure together, the material shrinks evenly. The result? A stable friction coefficient and a huge drop in those annoying decibels. It’s a simple fix for a massive manufacturing headache. Just wire it up, calibrate your sensors, and the noise goes away.