MACHINING
Samsun Segman always uses cutting-edge technology machines for the best possible machining tolerances.
Our machines have technologies such as CNC , automatic loading/unloading, automatic measuring and compensation for constant quality production.
The periphery of all rings is lapped by special machines for reducing the running-in period in the engine, to provide 100% light tightness for full performance, and to avoid leakage of pressure.
Our machines are from leading manufacturers in Germany, Japan, Switzerland, South Korea and Italy.
MATERIALS
There are two kinds of materials produced in our foundry in manufacturing Powerseal Piston Rings accordance with the Standard ISO 6621-3
1) Gray cast iron(LG) : ISO class 20 cast iron with lamellar graphite , standart material for piston rings with a very good lubricating characteristic thanks to its graphite flakes.
2) Nodular cast iron (KG) : ISO class 50 cast iron with spheroidal graphite , strong , unbreakable material. Withstands greater temperatures and pressures than gray cast iron.
3) Steel (ST) : ISO class 60 , thinner , lighter , better performance at high rpm engines.
All top and all chrome plated oil rings in Powerseal Piston Rings sets are made of nodular cast iron to ensure quality superiority and durability.
COATING
PHOSPHATING ( P ) : PHOSPHATE COATING ON ALL SURFACES
With phosphating, crystalline phosphates are deposited on all surfaces of the piston rings except chrome β plated areas.
The phosphate layer has a thickness of 0.002 β 0.005 mm. and improves the running in behaviour of the piston ring by increasing the adhesion of the oil.
Furthermore, the phosphate layer has a certain anti-corrosive effect during long storage periods even under damp conditions.
CHROME PLATING ( CR ) : RUNNING SURFACE CHROME-PLATED AND LAPPED
The electroplated chromium layer reduces wear on both the piston ring itself and on its friction partner, the running surface of the cylinder or liner. It thus helps to ensure that the total life of both the piston ring set and the engine is similar.
Both compression and oil control rings can be chrome plated.
NITRIDING ( NIT ) :
In this process, nitrogen atoms penetrate and diffuse into the base metal, significantly increasing the surface hardness. This coating is mostly used for steel top and oil rings. While it offers very good wear resistance, its scuff resistance is similar to chrome coating.
