Boze Titanium Manufacturing Center | Forging

Hot forging + vacuum annealing of valve stems and bolts

Hot forging + vacuum annealing of valve stems and bolts capability for titanium components

Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 7, Grade 9, Grade 23 Common Grades
Furnace: Ø600 × 1200 mm; up to 500 kg load Thickness Range
+0.01 mm (seat) / +0.02 mm (stem) Cutting Tolerance
+0.01 mm (seat) / +0.02 mm (stem) Tolerance
Ra 0.2 µm (sealing surface) Surface Finish
Titanium Anti-Roll Bar Droplink Titanium Bell Crank Rocker Arm Titanium Bottom Bracket Shell Titanium Brake Bleed Port Screw Titanium Brake Caliper Mounting Bolt Titanium Brake Caliper Piston Insert

What is Hot forging + vacuum annealing of valve stems and bolts?

Hot forging + vacuum annealing of valve stems and bolts capability for titanium components

Hydraulic and mechanical press capability for Hot forging + vacuum annealing of valve stems and bolts, with induction heating, die temperature control, and grain flow optimization.

Engineering Parameters & Capabilities

Vacuum heat treatment of titanium in a controlled environment prevents oxygen/nitrogen pickup that causes alpha-case embrittlement. Programmable temperature profiles with inert gas fan cooling enable solution treatment, aging, stress relief, and annealing in a single cycle, specifically for valve. Precision valve for Semiconductor present unique challenges: Seat leakage Class VI (ANSI FCI 70-2) requires lapped sealing surfaces. Stem straightness ±0.02 mm over 500 mm.

Parameter Specification
Atmosphere Vacuum < 10⁻⁵ torr
Cooling Inert gas fan cooling (2 bar Ar); oil/water quench
Max Temp 1200°C (beta solution treatment)

Engineering Capabilities & Limits

Hydraulic and mechanical press capability for Hot forging + vacuum annealing of valve stems and bolts, with induction heating, die temperature control, and grain flow optimization.

Hole Types Supported

N/A

Heat Control Measures

Graphite heating elements with molybdenum radiation shields. Partial pressure argon backfill during cooling for uniform thermal distribution.

Flatness & Stress Relief

Ceramic or titanium fixtures maintain component geometry during thermal cycling. Controlled cooling rate minimizes thermal gradient distortion.

Tolerance

+0.01 mm (seat) / +0.02 mm (stem)

Typical Applications & Components

This process is used to manufacture the following titanium components.

Titanium Anti-Roll Bar Droplink

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

Titanium Bell Crank Rocker Arm

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Bottom Bracket Shell

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Bleed Port Screw

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Caliper Mounting Bolt

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Caliper Piston Insert

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Lever Pivot Pin

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Pad Retaining Pin

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Brake Rotor (Disc)

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Camber Adjustment Shim

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

Titanium Coilover Spring

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

Titanium Connecting Rod

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

Titanium Derailleur Hanger

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Derailleur Pivot Pin

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Disc Brake Rotor Bolt

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Flat-Mount Brake Adapter

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Fork Air Chamber Top Cap

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Frame Flip Chip

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium GPS Mount Bolt

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Handlebar End Plug

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Handlebar Grip Lock Ring

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Headset Compression Plug

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Headset Crown Race

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Headset Spacer

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Headset Top Cap Screw

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Hub Bolt (M12)

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

Titanium Hydraulic Brake Banjo Bolt

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Linkage Pivot Bolt

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Main Pivot Axle

Grade 5 Ti-6Al-4V Cycling / Bicycle

Titanium Pivot Bearing Retainer Circlip

Grade 5 Ti-6Al-4V Cycling / Bicycle

Secondary Operations & Downstream Processing

Enhance your component with our integrated downstream services:

Hardness Testing

Rockwell C or Vickers hardness verification post-treatment.

Metallographic Analysis

Microstructure examination per ASTM E112.

Lapping (Seat)

Lapping (Seat) for hot forging + vacuum annealing of valve stems and bolts components.

Hydrostatic Test

Hydrostatic Test for hot forging + vacuum annealing of valve stems and bolts components.

Helium Leak Test

Helium Leak Test for hot forging + vacuum annealing of valve stems and bolts components.

Quality Assurance & Inspection

Inspection Items

  • Hot forging + vacuum annealing of valve stems and bolts specific dimensional verification (CMM / vision)
  • Material grade verification (PMI / OES spectrometer)

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 Hot forging + vacuum annealing of valve stems and bolts?
Hot forging + vacuum annealing of valve stems and bolts 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 Hot forging + vacuum annealing of valve stems and bolts?
Typical achievable tolerances for Hot forging + vacuum annealing of valve stems and bolts are +0.01 mm (seat) / +0.02 mm (stem). 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 Hot forging + vacuum annealing of valve stems and bolts?
All Hot forging + vacuum annealing of valve stems and bolts 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 Hot forging + vacuum annealing of valve stems and bolts projects?
Lead times for Hot forging + vacuum annealing of valve stems and bolts 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 Hot forging + vacuum annealing of valve stems and bolts 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.
Audience-first guidance

Guidance for the professionals who specify titanium

Role-specific answers and resources for engineers and buyers in this industry.

Quality & compliance Procurement Design engineering

Common questions from this audience

What quality systems and certifications do you hold?

AS9100D, ISO 9001, ISO 13485, NADCAP and ITAR-compliant — with full material traceability and in-house CMM inspection.

How do you verify dimensional quality?

In-house CMM metrology and GD&T validation per ASME Y14.5, with first article inspection reports.

Do you provide engineering support and DFM?

Yes—engineering support for DFM, material selection, and tolerance feasibility.

Related resources

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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 Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.

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