The panels of kitchen appliances such as ovens and steam ovens are exposed to high temperatures for a long time. If the thermal expansion effect is ignored after the panels are formed, they are prone to warping and buckle deformation.
Customer pain points:
After being baked at high temperatures, the panels slightly warp, affecting the smoothness of opening and closing the door;
The positioning accuracy of the clips is insufficient, resulting in poor sealing between the glass panel and the metal part;
Long-term exposure to heat causes the coating to peel off due to local stress.
Countermeasures for the forming equipment:
During the design stage, reserve thermal expansion compensation margin to ensure that the dimensions remain stable at high temperatures;
The mold passes adopt symmetrical arrangement to reduce the concentration of thermal stress;
After forming, add an online leveling process to ensure that the output plates remain straight.
For kitchen appliance manufacturers, these processes directly determine whether the products can pass the heat resistance test and long-term usage assessment, and are the key to differentiating high-end and ordinary equipment.