BOZE CNC Ti | Machining

CNC machining of flange faces and bolt holes

CNC machining of flange faces and bolt holes capability for titanium components

Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 7, Grade 9, Grade 23 Common Grades
Up to Ø600 mm × 400 mm Thickness Range
+0.05 mm (bolt PCD) / +0.02 mm (face flatness) Cutting Tolerance
+0.05 mm (bolt PCD) / +0.02 mm (face flatness) Tolerance
Ra 0.8 µm (gasket face) Surface Finish
Titanium Air Sparger Pipe Titanium Anti-Roll Bar Droplink Titanium AUV Propeller Shaft Titanium Ball Valve Stem Titanium Blind Flange (ASME B16.5) Titanium Camber Adjustment Shim

What is CNC machining of flange faces and bolt holes?

CNC machining of flange faces and bolt holes capability for titanium components

Precision machining capability for CNC machining of flange faces and bolt holes, utilizing multi-axis CNC centers with in-process inspection and SPC quality control.

Engineering Parameters & Capabilities

5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the workpiece surface maintains optimal chip load and extends tool life, critical for difficult-to-machine titanium alloys, specifically for flange. Precision flange for Aerospace, Chemical, Oil & Gas present unique challenges: Large diameter (up to 600 mm) with bolt hole pattern PCD tolerance ±0.1 mm. Face flatness critical for seal integrity.

Parameter Primary Method Alternative Method
Kinematics Full 5-axis simultaneous interpolation 3+2 positional indexing
Surface Finish Ra 0.8 µm standard; Ra 0.2 µm with finishing pass Ra 1.6–6.3 µm
Tool Access Unrestricted — tool can approach from any angle Limited — each setup indexes the part

Engineering Capabilities & Limits

Precision machining capability for CNC machining of flange faces and bolt holes, utilizing multi-axis CNC centers with in-process inspection and SPC quality control.

Hole Types Supported

Coolant passages Threaded holes at compound angles Counterbored fastener holes

Heat Control Measures

High-pressure coolant-through-spindle (50–70 bar) with coated carbide tooling. Adaptive trochoidal milling paths reduce radial engagement to control heat generation.

Flatness & Stress Relief

Face flatness critical for seal integrity. Sequenced bolt-hole drilling pattern (opposite poles) prevents flange warpage.

Tolerance

+0.05 mm (bolt PCD) / +0.02 mm (face flatness)

Typical Applications & Components

This process is used to manufacture the following titanium components.

Titanium Air Sparger Pipe

Grade 2 CP-Ti Electroplating & Surface Finishing

Titanium Anti-Roll Bar Droplink

Grade 5 Ti-6Al-4V Automotive & Motorsports

Titanium AUV Propeller Shaft

Grade 5 Ti-6Al-4V ELI Marine & Offshore

Titanium Ball Valve Stem

Grade 2 CP-Ti Chemical Processing

Titanium Blind Flange (ASME B16.5)

Grade 2 CP-Ti Chemical Processing

Titanium Camber Adjustment Shim

Grade 5 Ti-6Al-4V Automotive & Motorsports

Titanium Catalyst Basket Mesh Liner

Grade 12 Ti-0.3Mo-0.8Ni Chemical Processing

Titanium Chlorine Compressor Impeller

Grade 12 Ti-0.3Mo-0.8Ni Chemical Processing

Titanium Coilover Spring

Grade 5 Ti-6Al-4V Automotive & Motorsports

Titanium Concentric Reducer

Grade 2 CP-Ti Chemical Processing

Titanium Connecting Rod

Grade 5 Ti-6Al-4V Automotive & Motorsports

Titanium Control Rod Seal Housing

Grade 2 CP-Ti Energy

Titanium Cryogenic H2 Flange Bolt

Grade 2 CP-Ti Energy

Titanium Deep-Sea Release Hook Pin

Grade 5 Ti-6Al-4V ELI Marine & Offshore

Titanium Dosing Pump Impeller

Grade 2 CP-Ti Environmental Engineering

Titanium Downhole Production Tubing

Grade 5 Ti-6Al-4V ELI Marine & Offshore

Titanium Downhole Wireline Barrel

Grade 5 Ti-6Al-4V ELI Marine & Offshore

Titanium ECCS Valve Stem

Grade 2 CP-Ti Energy

Titanium Eductor Nozzle

Grade 2 CP-Ti Electroplating & Surface Finishing

Titanium Equal Tee (ASME B16.9)

Grade 2 CP-Ti Chemical Processing

Titanium Filter Press Tie Rod

Grade 2 CP-Ti Environmental Engineering

Titanium Fuel Cell End Plate

Grade 2 CP-Ti Energy

Titanium Fuel Pool Rack Spacer

Grade 2 CP-Ti Energy

Titanium Heat Exchanger Tube Bundle

Grade 12 Ti-0.3Mo-0.8Ni Chemical Processing

Titanium Heat Exchanger Tube Sheet

Grade 12 Ti-0.3Mo-0.8Ni Chemical Processing

Titanium Hub Bolt (M12)

Grade 5 Ti-6Al-4V Automotive & Motorsports

Titanium Hydrogen Flame Arrestor

Grade 2 CP-Ti Energy

Titanium Hydrogen Storage Valve Stem

Grade 2 CP-Ti Energy

Titanium Immersion Heater Sheath

Grade 2 CP-Ti Electroplating & Surface Finishing

Titanium Liquid Level Float

Grade 2 CP-Ti Electroplating & Surface Finishing

Secondary Operations & Downstream Processing

Enhance your component with our integrated downstream services:

Deburring

Manual or robotic deburring of sharp edges and thread protection.

CNC Drilling of Bolt Holes

CNC Drilling of Bolt Holes for cnc machining of flange faces and bolt holes components.

Face Milling

Face Milling for cnc machining of flange faces and bolt holes components.

Hydrostatic Pressure Test

Hydrostatic Pressure Test for cnc machining of flange faces and bolt holes components.

Quality Assurance & Inspection

Inspection Items

  • CNC machining of flange faces and bolt holes specific dimensional verification (CMM / vision)
  • Material grade verification (PMI / OES spectrometer)
  • Fluorescent Penetrant Inspection (FPI) per ASTM E1417

Quality Standards & Certifications

  • ISO 9001:2015 — Quality Management System
  • AS9100D — Aerospace Quality Management
  • ASTM B265 — Titanium Strip, Sheet, and Plate Standard

Frequently Asked Questions

What titanium grades are suitable for CNC machining of flange faces and bolt holes?
CNC machining of flange faces and bolt holes can be performed on Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 7, and other grades. The specific grade selection depends on the required mechanical properties, corrosion resistance, and end-use application requirements.
What tolerances can be achieved with CNC machining of flange faces and bolt holes?
Typical achievable tolerances for CNC machining of flange faces and bolt holes are +0.05 mm (bolt PCD) / +0.02 mm (face flatness). Tighter tolerances may be possible depending on part geometry, material condition, and quantity. Our engineering team reviews each project to determine the optimal tolerance-cost balance.
What quality certifications apply to CNC machining of flange faces and bolt holes?
All CNC machining of flange faces and bolt holes operations are performed under ISO 9001:2015 — Quality Management System, AS9100D — Aerospace Quality Management, ASTM B265 — Titanium Strip, Sheet, and Plate Standard certified quality management systems. Full traceability documentation, material certifications (EN 10204 3.1), and inspection reports are provided with each shipment.
What is the typical lead time for CNC machining of flange faces and bolt holes projects?
Lead times for CNC machining of flange faces and bolt holes vary by complexity and quantity. Prototype quantities (1-10 units) can typically be completed in 3-7 business days. Production quantities require 15-25 business days. Rush orders are available for qualifying projects. Contact our sales team for a specific timeline.
Can you provide DFM feedback for my CNC machining of flange faces and bolt holes design?
Yes. We provide free Design for Manufacturability (DFM) analysis for all new projects. Simply upload your CAD file (STEP, DXF, or DWG format) and our engineering team will review your design and provide optimization suggestions within 24 hours.

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About Boze Titanium Manufacturing Center

One Metal. One Focus. Infinite Precision.

Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.

Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.

AS9100D ISO 13485 ISO 9001 500+ Clients 15+ Years OEM/ODM
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