Requirements on tools for valve body

Requirements on tools for valve body

Requirements on market:

Tolerance: H6 to H8
Surface: RZ 4 to RZ 10
Roundness: 3µm to 10µm
Straightness: 5-8µm
Cylinder form: 3-8µm
Coaxiality: 5-15µm

 

We can use different strategies:

  1. Pilot / Semi-Finish / Finish
  2. Semi-Finish / Finish
  3. Plug drill / Finish

 

Tools used normally in adjustable holders  within 4 µm runout. Semi-Finisher and pilots are clamped in hydraulic or shrink holder.


Our typical bore quality:

Roundness: 1-3µm
Surface: RZ 1-4µm
Coaxiality: 3-8µm
Cylinder form: 3-6µm
Straightness: 1-3µm

 

 

Port tools

Requirements on market
Tolerance: H7/H8
Roundness: 10-15µm
Surface: RZ16
Coaxiality: 10-40µm

 

Our typical bore quality:

Roundness: 3-6µm
Surface: RZ 2-5µm
Coaxiality: 5-10µm
Tool life: 80,000 to 160,000 bores