Reasons for broken parts caused by medium temperature wax investment casting wax:
1. The weldment is not stuck firmly.
2. The wax parts were welded into trees immediately after wax pressing, and the internal stress was not eliminated.
3. The quality of precision casting wax in medium temperature wax has problems, and the recycling treatment is not good.
4. The temperature difference between coating and wax injection is too large.
5. When pressing wax parts, there are cracks or fracture tendency at the fracture.
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 that it has been ten years), and less new wax has been added, so the strength of the wax is not enough.
The wax parts were welded into trees immediately after wax pressing, and the internal stress was not eliminated.
1. After the intermediate temperature wax medium precision casting wax pieces are pressed, they must be repaired within 6 hours, and then the trees must be assembled within 6 hours. The shell layer shall be made after the trees are formed for 4 hours.
2. The wax of the two production lines shall be mixed and melted before being used separately, and new wax must be added. Light weight, scrap loose wax.
3. Wax treatment is very critical. Only experienced and responsible staff can undertake this task!
Qingdao Xinnuoke Holdings Group limited company.