03Product Line
YPR is manufacturing various types of cast iron piston rings, stainless steel oil rings, cylinder liners, valve guides and camshafts
CAMSHAFT
Camshaft delivers the motion to valves by changing the movement of crankshaft into the reciprocation of tappet or rocker arm and adjusts valve's opening and shutting. Cam profile should equivalent to the lift of valves and the cam shape is complicated and precise, and so the characteristics of Cam and Shaft requires different material.
Camshaft Technology
01
Reliability and Quality Target
- Improvement in the wear resistance of Cam and Journal.
- High strength material
- Light weight
- Simplification of lubricating device and effectiveness to the utmost.
02
Process
Chilled Camshaft High frequency Hardening Camshaft Process Casting Casting+high frequency heat treatment Cam surface hardening Chilling(chiller) high frequency heat treatment+Quenching 03
Camshaft Molding Process
- Shell Molding Process
- Cold Box Molding Process
04
R&D
Fluid Flow Simulation
Flow-3D (Fluid & Solidification Simulation Program)
Kinds of YPR Camshaft material
01
Solid Camshaft
- Size(length) : below 630mm
- Development period : 2 Months
02
Hollow Camshaft — END Block Type
- Size(length) : below 630mm
- Material of Core : Shell
- Development period : 3 Months
03
Hollow Camshaft — Straight Through Type
- Size(length) : below 630mm
- Material of Core : Quartz Tube Steel Pipe
- Development period : 3 Months
Patent(no.0226044); Development of Hollow Camshaft by using Steel Pipe