Factory Tour, Equipment & Testing Capabilities
1,800 m² of precision grinding, PVD coating, and 100% optical inspection under one roof in Shenzhen. Everything from raw carbide rod to certified shipment in 14 days.
End-to-End Manufacturing
From Raw Carbide to Certified Shipment
Six tightly controlled production stages, every step under one roof — no outsourcing, no hand-offs, no quality gaps.
Raw Material Incoming
Every carbide rod and PCD blank is inspected on arrival — hardness (HRA), TRS bending strength, grain size analysis and chemical composition verified against mill certificates before entering stock.
- Hardness: HRA ≥ 92.5 (K10–K20)
- TRS: ≥ 3,500 N/mm²
- Grain size: 0.4–0.8 µm submicron
- Certificate: traceability to heat number
5-Axis CNC Grinding
Walter Helitronic Vision 400L and Rollomatic GrindSmart 830XW grinding centres produce the complete tool geometry in a single setup — flutes, clearances, point geometry and chamfers — eliminating repositioning errors.
- 42 × 5-axis CNC grinding centres
- Automated wheel change — up to 12 wheels
- Repeatability: ±0.001 mm
- Capacity: 8,000+ tools/day
PVD / CVD Coating
In-house Hauzer and Platit PVD arc-evaporation units apply TiAlN, AlTiN, TiCN and DLC coatings to customer specification. CVD diamond coating is applied for PCD composite and aluminium tools.
- Coating thickness: 1–4 µm PVD
- Deposition temperature: 450–500 °C
- Adhesion: Rockwell HF1–HF2
- Batch traceability — lot-coded
Optical Inspection
Zoller Genius 3 and Genius 700 tool measuring machines inspect 100% of production. Point angle, helix angle, core diameter, runout, edge radius, flute form and coating uniformity are verified against the nominal drawing.
- 100× magnification CCD camera system
- Runout tolerance: ≤ 0.003 mm
- Edge radius measurement: ±0.001 mm
- 100% production inspection — no sampling
CMM Dimensional Verification
Mitutoyo Crysta-Apex CMMs perform full 3D dimensional verification on first-off and statistical sampling during production. Aerospace and medical orders receive 100% CMM with full dimensional report.
- Mitutoyo Crysta-Apex C 776 CMM
- Measurement uncertainty: ±0.0015 mm
- Full 3D programme per drawing
- Report archived 7 years
Final Packing & Shipment
Tools are laser-marked with a lot code, individually foam-packed, and shipped with a Certificate of Conformance (CoC), dimensional report and material certificate. DDP shipping to 50+ countries.
- Laser marking: lot + operator traceability
- Individual foam-lined cassette packaging
- CoC + CMM report with every order
- DHL / FedEx express + freight forwarding
Capital Equipment
Best-in-Class Manufacturing Equipment
We invest in the same machines used by tier-1 aerospace tooling suppliers in Europe — because our customers demand the same tolerances.
CNC Grinding
Coating
Measurement & Inspection
Supporting Equipment
Quality Laboratory
Testing & Validation Capabilities
In-house testing means we know the performance of every tool we ship — not just its dimensions.
Cutting Performance Testing
In-house machining trials on Haas VF-4 and DMG Mori NLX machining centres — tool life, surface finish, and cycle time documented before product release.
- ISO 3685 tool life methodology
- Workpiece materials: steel, stainless, cast iron, aluminium, titanium, composites
- Surface finish Ra measurement on every trial
Wear and Failure Analysis
SEM/EDS scanning electron microscopy for failure analysis and coating adhesion evaluation — used during product development and for warranty investigations.
- Hitachi SU3500 SEM + EDS
- Flank wear, crater wear, edge chipping classification
- Root cause reports within 5 business days
Coating Adhesion & Hardness
Rockwell scratch adhesion testing (HF scale), Vickers micro-hardness of substrate and coating, and cross-section coating thickness via SEM — all per ISO 26443.
- Rockwell HF1–HF6 scratch test
- Vickers hardness: HV0.05–HV30
- Coating thickness cross-section SEM verification
Dimensional & Geometric Metrology
Full 3D measurement on Mitutoyo CMM backed by NIST-traceable calibration artefacts. All gauges and measuring instruments on a controlled calibration schedule.
- ISO/IEC 17025 calibration traceability
- Gauge R&R studies per customer PPAP
- Annual external calibration audit
Inside JIAYI
The Factory in Pictures
Visit Us
Book a Factory Visit
We welcome customer visits to our Shenzhen facility. A typical tour covers the full production flow — from carbide selection through grinding, coating, inspection, and final packing. We can also arrange a live machining demonstration with your workpiece material.
- Full production walkthrough — 2 to 3 hours
- Live CNC grinding demonstration
- Metrology lab and CMM demonstration
- Engineering workshop with our application team
- Airport transfer from Shenzhen / Hong Kong available
Floors 1–3, No. 12 Jingshan Road
Luotian Community, Songgang Town
Bao'an District, Shenzhen 518105
Guangdong, China
Appointment required — contact us 3 business days in advance