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Engine valves

Engine valves

General Characteristics

Stem diameter 5 - 6 mm
Material DIN 1.4871
Treatment Nitrided
Hardness 62-64 HRC
Cycle time (s) 7,5
Dresser type Multipoint (21)
Coolant 3%, syntetic or semysintetic

 

 

Plunge centerless grinding process

  Polishing
Machine KHVCG 1-V
Grinding Wheel 400 FK 223 B
Wheel dimensions 600 x 100 x 305
Regulating Wheel A120 V7RS
Wheel dimensions 305 x 100 x 127
Stock Removal 0,005 mm
Dressing frequency 200 piezas
   
Surface Roughness (Ra) 0,1 μm

 

 

 

Engine valves

General Characteristics

Stem diameter 5 - 6 mm
Material DIN 1.4871
Treatment Nitrided
Hardness 62-64 HRC
Cycle time (s) 7,5
Dresser type Multipoint (21)
Coolant 3%, syntetic or semysintetic

 

 

Plunge centerless grinding process

  Polishing
Machine KHVCG 2-V
Grinding Wheel AWA240MB
Wheel dimensions 500 x 100 x 305
Regulating Wheel A120 V7RS
Wheel dimensions 305 x 100 x 127
Stock Removal 0,015 mm
Dressing frequency 150 piezas
   
Surface Roughness (Ra) 0,2 μm