Testing

Nordia Springs advanced laboratory is equipped with modern analytical and measurement equipment.

Inspection (incoming) of raw material

• Compliance with COC / COA
• Weight of coil
• Wire diameter
• Packaging quality
• Compliance with customer definition
• Chemical composition
• Tensile strength

In-Line (production) inspection

• Free length
• Inner diameter / Outer diameter
• Grinding depth
• Almen test
• Load tests
• Chamfer test

Off-line tests

• Residual stress (X-Ray)
• Cold / Warm fatigue test
• Relaxation test
• Durability test
• Risk line (engine valve springs)
• Flaw analysis
• Final layout inspection
• Cleanness tests