Gimbal Yoke·Torch Dynamics
Trial 3
FailureA356Jun 30, 2026
Goal
Run trial 2 parts through T6 and check for quench cracking.
Process
- Pour temp
- 705C
- Mold temp
- 185C
- Alloy batch
- A356-2606-C
- Trial date
- Jun 30, 2026
- Gating
- Unchanged.
- Changed from the previous trial
- No casting change. Added T6 heat treat.
What came out
Defects observed
Two of four cracked at the fork root during water quench.
Lessons learned
The fork root fillet is too sharp for a water quench. Opening it to R6 before the next trial.