Engine Valve Seat Semi-Finish Grinding Machine

MOQ: 1 Pieces

Delivery time: 15 Day

High quality materials, sturdy and durable, fully upgraded, professional quality, Light weight, high strength, low cost, and good performance

Product Details

1. Processing range (the original state of the workpiece):

Workpiece status	Processing conditions	Remarks
Valve head diameter	MAX 50㎜
Stem diameter	φ 5～12㎜
Length	80～250㎜
Material quality	21-4N+4Cr10Si2Mo
Hardness	30—60HRc
Stem run-out	Within 0.005 ㎜, the stem part is clean without sundries
Angle	45～60°
Valve head surface run-out	0.05㎜
Machining allowance	0.10~0.20㎜ (diameter)

2. Processing accuracy and cycle time:

Position	Accuracy	Test methods and tools
Run-out accuracy	Continuously process and measure 50 pieces within 0.08 mm.	Special measuring tool
Dimensional accuracy	Continuously process and measure 50 pieces within ± 0.03㎜.	Special measuring tool
Circularity	Continuously process and measure 50 pieces within 8.0 μ m.	Roundness measuring equipment
Surface roughness	Continuously process and measure 50 pieces within Ra 1.6 μ m.	Roughness tester
Cycle time	Take machining allowance 0.5mm as the standard - 7s/pc.