The cause of a partial thick aluminum plate mutation
1 The influence of the material of the roller. Due to the unevenness of the material, the hardness and heat exchange are not uniform, causing a mutation.
2 The core of the roller is blocked and the scale is severe, which causes the unevenness of the thickness of the cast strip due to uneven heating of the sleeve.
3 Anti-stick system, such as graphite coating, thermal spraying and uneven spraying, resulting in uneven heat exchange of the sleeve caused a local abrupt change in the thickness of the cast sheet.
4 Casting and rolling aluminum plate partial bonding roller can cause sudden change of thickness.
5 The distribution of the nozzle gasket is unreasonable. If the gasket is too long or too short, it will cause the thickness of the auxiliary part to change.
Two partial aluminum plate thickness mutation elimination method
1 Reasonably circulate the waterway structure to ensure the continuity of the water flow and clean the blockage and scale in time.
2 The anti-stick system should be sprayed evenly.
3 If the thickness of the roll cover is uneven, the thickness is changed suddenly, then it is important to change the roll again.
4 Properly process and distribute the mouth cavity gasket.
5 Ensure that the supply and retention system, such as chutes and nozzles, are dry, and strengthen preheating and heat preservation measures.
6 The implementation of the broken plate, on the one hand, can remove the gas that collects bubbles; on the other hand, the slag can be removed to ensure the smoothness of the melt in the mouth cavity.