Overheating during hot bending

During the hot bending process, the glass is overheated in the middle because of overheating and too long hot bending time. Especially when the hollow mold is hot bent, if the glass is fully attached to the hollow mold and continues to be heated, the glass will further soften and sag, and bend too much (produce a “big belly”), and in severe cases, it will cause the glass to fall off the mold. The solution is as follows.
① Shorten the hot bending heating time to prevent the temperature from being too high. After the glass mold is attached, the heater should be turned off immediately or the glass should be removed.
② If it cannot be corrected, change the layout of the heating wire and reduce the heating time of the middle heater until it is properly corrected.
③ When the hot bending overheating has been corrected by the above method, the hot bending production is carried out according to this method.