Consistently Enforcing Rigorous Quality Control
- Prototype in as fast as 2 days
- Tight tolerance control into +/- 0.01mm
- ISO9001:2015 certification
UTM Quality Control Process
1.Incoming Material Inspection
- Check chemical composition and physical properties
- Verify outer diameter (OD) dimensions
2.Cutting Process Inspection
- Check length dimensions (47.5±0.2mm, 45.75±0.1mm)
- Verify center distance (4X22.875±0.1mm)
3.Lathing Process Inspection:
- Inspect outer diameters (Ф80±0.1mm, Ф70max, Ф69.4±0.13mm, Ф74.8±0.13mm, Ф68.5±0.25mm, Ф63±0.25mm)
- Check inner diameters and hole dimensions (6±0.5mm, 55±0.02mm)
- Verify groove dimensions (59.5±0.25mm, width 3.18±0.25mm)
- Confirm relative position tolerances
4.Deburring Inspection
- Visual inspection for burrs on the surface
5.Heat Treatment Inspection:
- Check compound layer depth (0.01~0.025mm)
- Verify hardness (460 HK100 MIN at 0.050 depth below compound layer, 60 HRC MIN surface hardness)
6.Lathing Process Inspection:
- Perform comprehensive dimensional inspection using gauges, micrometers, and CMM
- Visual inspection for overall appearance and defects
7.Surface Treatment Inspection
- Verify cleanliness per JDS-G169 Class 6.4 (Total part area=0.025㎡, Maximum allowable contaminant=7.122mg)
8.Packing Inspection
- Check quantity, marking, and part number accuracy
9.Documentation
- Record inspection results and maintain traceability
- Review and approve inspection reports
UTM Quality Control Office
UTM Quality Inspection Equipment
- SEREIN Croma 8126 Coordinate Measuring Machine (CMM) 800×1200×600 (mm), MPE (maximum permissible error) 3.0μm
- ScanTech PRINCE775 Handheld 3D Scanner Laser source: 7+1 red laser crosses / 5 blue parallel laser lines Effective work range 200mm~450mm / 100mm~200mm, Accuracy Up to 0.03mm
- Granite Inspection Table, 1200×1000 (mm) / 1000×750 (mm)
- Digimatic Heitht Gages, 0-600 (mm)
- Full Range of Vernier Caliper, 0-100-150-200-300-600-1000 (mm)
- Outside Micrometers / Digimatic Holtest, 0-25-75-100-125-150 (mm) / 12-20-50-100 (mm)