Curing is a term in polymer chemistry and process engineering that refers to the toughening or hardening of a polymer material by cross-linking of polymer chains, brought about by electron beams, heat or chemical additives.esin curing [edit]. Despite the wide variety of thermoset resin formulations (epoxy, vinylester, polyester, etc.), their cure behavior is qualitatively identical.
The brake drum mounts on the axle or wheel hub, and some drums incorporate the hub. Most brake drums are made of solid cast iron, but there are also steel and aluminum drums with cast iron liners. The machined friction surface on all drums is cast iron.
HEAVY TRUCK BRAKING & AIR DISC BRAKES 3: 1 6 Foundation Drum BrakesS-Cam Brakes The most common type of foundation drum brake is the S-Cam Brake, commonly referred to simply as Cam â or Drum â Brakes.Cam Brakes are actuated by applying input force from an air chamber or actuator.EAVY TRUCK BRAKING & AIR DISC BRAKES 4: 4 13 In the event of wear, the wear adjusting system gradually moves the brake caliper (1) from its initial position so that a constant â and small â air gap between the brake pad (4) and the brake disc (3) is always on the side where no brake actuation takes place.