Getting Brake Pad Curing Right with IR Heating
Curing brake pads is a bit of a tightrope walk. If you crank the heat too fast, you end up with scorched surfaces and tiny holes inside the material. But if you take too long? The structural bond just doesn’t hold. It’s a headache. We use custom shortwave infrared (IR) heaters to handle that heat balance so you don’t have to worry about thermal cracks ruining a batch. The problem with old-school ovens Most convection ovens just heat the air. The part itself has to “catch up,” which creates a lag and leads to uneven curing. It’s frustrating. IR is different. It hits the material directly. By tuning the wavelength, we make sure the heat actually sinks into the friction material instead of just baking the top layer. You have to get the wattage-per-centimeter just right. If you don’t, you get “hot spots,” and that’s exactly when the material starts to crack under the stress. Stopping the bubbles If you want to avoid porosity, you have to manage how the resins off-gas. We use multi-zone PID control to ramp up the temperature in stages. Think of it like this: if you rush the ramp-up, gases get trapped and create voids in the pad. Not good. A controlled IR soak lets the core reach the right temperature without pushing the surface over the edge. Real talk: The shop floor I love IR heaters because they don’t take up much space and they react instantly. You can tweak your temperature setpoints in seconds. But look, there’s a catch. High-intensity lamps put out a lot of radiant heat. If you aren’t careful, that heat can warp your jigs or fry your sensors. You’ve got to be smart about your cooling fans and heat shields to keep the rest of your line safe. When your IR is calibrated properly, the resin cross-links uniformly. The pads are stronger. More importantly, you can finally stop guessing what’s happening inside the oven.