Watch Spring Fact Sheet

Facts & Figures

• Name: Watch Spring
• Material: Spring steel, 1.4310
• Material thickness: 0.5 mm
• Kerf: 0.3 mm
• Water pressure: 55,000 psi (3,800 bar)
• Quality grade: 5 (surface quality Ra 3.2 µm)
• Feed rate: 742 mm/min.
• Machining time: 50 seconds

Benefits of Microwaterjet® Cutting on a Watch Spring

• Material properties and spring tension remain unchanged
• High reproducibility
• Virtually burr-free
• Very good land width/height ratio (1:5)
• Long, thin-walled land width
• Original material structure remains
• Precise holes and radii

Alternative

When using a hot-cutting procedure such as wire-cut EDM or fine-laser cutting, the heat has a negative effect on thin land widths (0.5 mm). The material becomes brittle and loses its properties, with a risk of micro-cracks. With wire-cut EDM, a starting hole has to be drilled in advance. With etching, the perpendicularity of the land width is affected.

To learn more about our services, contact our Microwaterjet team!

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