Valve Seat

- NEP’s products are produced by Powder metallurgy manufacturing process.
- Powder metallurgy manufacturing process: Process of filling metal powder of which average particle size is 100㎕ in a mold having a shape of desired part, molding with a press, and sintering at the metal melting point or less.
These include incomplete seating during the press fitting-step, distortion of the nominally circular valve seat surfaces such they deviate unacceptably from perfect roundness or waviness, tilt of the machined surfaces relative to the valve guide hole axis, deviation of the valve seat surfaces from concentricity with the valve OEM subcontractors, high- performance specialists and engine rebuilders must take into account and respect precise shape and dimension tolerances while machining valve guides and valve seats. With this “aide-memoire”,. NEWEN attempts to gather, within a short document meant for production technicians, the various