1.5 KiB
1.5 KiB
Sheetpress Experiments - Cassandra - 650 - EDC - RC1 - Conclusion
10 mm
A one-stage process suitable for up to 10 mm thickness, though prone to warping effects.
Conclusions
- Minor flatness errors were observed, typically 0.5-1 mm.
- Warping and material shrinking occurred, especially near corners.
Recommendations
- Reheat at 140°C and press again to minimize shrinkage and warping.
- For a better finish, repeat the press with a harder surface.
20 mm
A two-stage method offering better control at greater thickness.
Conclusions
- The inclusion of intermediate dies reduced warping and improved overall flatness.
Recommendations
- Incremental heating and controlled die insertion are recommended.
- Use presses with adequate pressure (20 tons minimum) for thicker sheets.
30 mm
A two-stage method offering better control at greater thickness.
Conclusions
- The inclusion of intermediate dies reduced warping and improved overall flatness.
Recommendations
- Incremental heating and controlled die insertion are recommended.
- Use presses with adequate pressure (20 tons minimum) for thicker sheets.
40 mm
A three-stage process for 40 mm sheets with significant handling challenges.
Conclusions
- Height differences were observed, particularly on the die-engaged side (up to 5 mm).
- Air pockets and corner warping were frequent issues.
Recommendations
- Implement intermediate reheating steps.
- Introduce controlled cooling phases to mitigate height inconsistencies.