Piston rings are a key component of internal combustion engines in two-wheel and four-wheel drive vehicles. Because pistons move back-and-forth thousands of times per minute within the cylinders, the piston rings are indispensable for engine operation.
Piston rings perform several functions including: serving as a gas seal within the cylinder carrying heat away into the cooled cylinder block and controlling the amount of engine oil lubricating the engine. Each piston includes three rings.
The wire used to make piston rings needs to satisfy demanding performance criteria since piston rings move back-and-forth vigorously under harsh conditions at elevated temperatures and speeds, and client quality requirements are constantly evolving.
To meet market and client demands, TOKUSEN U.S.A., Inc. has been refining our proprietary shaping technology to enable wire processing of minute cross-section shapes with high dimensional precision. TOKUSEN’s steel wire used in piston rings are replacing the old technology of using cast rings.