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인정서
신소재
CNG ENGINE VALVE SEAT INSERT
- ∴ Abstract
- Valve seat inserts are important components in the valve train system and of essential significance for an optimized combustion process in the cylinder Together with the valve the above mentioned components have to guarantee perfect sealing of the combustion chamber to ensure that the required compression or combustion pressures are reached in the cylinder Increased wear results in variation of the combustion conditions and thus in a decrease of engine performance and emission.
∴ Introduction
- VALVE SEAT EXHAUST
- MATRIX- Quickly spread into matrix induced impact to hard
particles
- Bonding strength of matrix and hard particles
maintain and efficiently show wear resistance HARD PARTICLES- Wear resistance of Valve seat maintained by
diffusing into soft matrix
- Use Co-Mo-Cr-Si alloy
- Heat resistant and excellent abrasion resistance of
high temperature
- VALVE SEAT INTAKE
- MATRIX- SORBITE
- Hear resistance & Oxidation resistance improve
- Balance the relative aggressiveness is less
- Impact resistance & Machineability improve
- ∴ Experimental Procedure
∴ Result
- MATERIAL PROPERTIES
-
CLS. Specification Note VALVE SEAT EXH Density (g/cc) 7.0~7.1 Seat Part Hardness (HV5) >180 Support Part Hardness (HV5) >150 VALVE SEAT INT Density (g/cc) 7.1~7.3 Hardness (HRC) 31~41
- MICROSTRUCTURE
- EXHAUST
SEAT PART
SUPPORT PART
- INTAKE
SEAT PART