Detailed Description
Engineers specifying 6061 anodized tooling plate hit plus minus 0.03 mm per 300 mm only after stress-relief and re-mill; this laminate exits autoclave near-net then gets two-pass lap to plus minus 0.015 mm per 300 mm without the residual-stress spring-back aluminum exhibits. Symmetric layup cancels in-plane CTE to 0.8 ppm per degree Celsius measured on customer interferometer at 22 degree plus minus 3 degree. Tap holes M4 to M6 laser-located from customer datum; no through-holes drilled until after flatness inspect to avoid clamp distortion. Guangdong Shenyang New Material provides serialized datum certification and prepreg lot cross-reference for every export consignment.
Specification
|
Item |
Value |
|---|---|
|
Flatness |
plus minus 0.015 mm / 300 mm |
|
CTE in-plane |
0.8 ppm per C |
|
Surface |
Double-side lapped, Ra 0.4 |
|
Max format |
600 x 400 mm |
|
Datum |
Customer CAD, laser referenced |
|
Application |
Optical stage, payload reference plate |
Company Profile
Custom FAQ
Q: Can we specify datum A B C per ASME Y14.5 on the drawing
A: Datum callouts are accepted and laser datum marks are etched on the non-critical edge face at no charge.
Q: Lapping after or before hole drilling
A: Flatness-critical parts are lapped first then holes are drilled from the finished datum to avoid clamp distortion.
Q: What is the minimum order for custom ply count
A: Minimum 3 panels for a new ply book, single panel accepted if we already hold the layup in cold store.
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