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.
Drum brake linings consist of the friction material itself, usually shaped to match the radius of. the brake shoe onto which it is subsequently attached. The friction material is usually attached to the. supporting brake shoe either by bonding or by the use of rivets. Conventional friction materials consist mainly. of fibrous materials, bonding agents, anti-seize agents, metals and other fillers.