1. The weldment is not firmly glued.
2. The wax part is welded immediately after the wax is pressed, and the internal stress is not eliminated.
3. The quality of precision casting wax in medium temperature wax is problematic, and the regeneration is not well treated.
4. The temperature difference between the paint room and the wax injection is too large.
5. When pressing wax parts, there are cracks or a tendency to break at the fracture itself
We have two medium temperature wax lines, and the wax treatment is similar; It may be that the wax of this line has been used for too long (it seems to be more than ten years) and there is less new wax added, so the strength of the wax is not enough.
The wax part is welded immediately after the wax is pressed, and the internal stress is not eliminated" This is very accurate,
Workaround
1. After the pressing of precision casting wax pieces in medium temperature wax, it must be repaired in 6 hours, and the tree will be formed after 6 hours. 4 hours after the tree is formed, the shell surface layer is made.
2. Mix and melt the wax of the two production lines and then use it separately, and add new wax if necessary. Lightweight, loose wax is scrapped.
3. Wax treatment is very critical, and experienced and responsible employees can undertake this task!
