Production Process of Double Zero Aluminum Foil for High Glossiness Paperboard
2016/12/6 14:48:15
With the double-foil foil used in the packaging industry is widely used to improve the surface gloss requirements, through different test programs to adjust the processing pass, the work roll, support roller surface roughness, rolling oil and other process parameters, The best technology so that the surface gloss to the user requirements, and the production process of the Department of the Department of roller-wipe to make provision for products to better meet the needs of users.
As a result of double-zero aluminum foil with good processing shape, surface appearance, light weight, corrosion resistance, higher strength than the advantages, it is widely used in alcoholic drinks and tobacco and food packaging. The tobacco and alcohol and food packaging is double-foil as a cardboard with a consumable, the market demand is high, gloss is the quality of double-foil foil with an important indicator. Packaging enterprises to use aluminum foil according to user requirements bright side, dark surface are required to use, by adjusting the roll surface roughness and rolling oil index to improve the double zero foil surface gloss. Hot-rolled blanks produced double-zero foil surface even better than casting fine blank, so the test using hot-rolled blank.
Production Process
Allocation
Foil each pass to control a reasonable pass rate of processing, in order to ensure the smooth rolling of the follow-up, rolling parameter balance, good access to the aluminum foil surface, plate shape.
Intermediate annealing
Hot rolled blanks are different from cast blanks in terms of their microstructure characteristics, so the tensile strength is high due to the high work hardening degree, which results in poor surface quality, More, the need for low-temperature annealing to produce deformation of the organization back.
Roller grinding
Work roll after a period of time after the need to re-grinding the surface, the establishment of the roll and surface roughness, surface roughness to determine the need to pass the amount of reduction, aluminum foil surface quality requirements and rolling speed requirements comprehensive decision. Roll roughness is too high to improve the rolling speed at the same time to some extent due to excessive roller surface caused by aluminum foil surface film damage, while the rolling speed is too high will produce excessive deformation of metal heat, reduce oil film strength and lubricity , Resulting in oil film rupture. However, if the roll surface roughness is too low, resulting in excessive lubrication will roll in the aluminum foil surface slip, the formation of resonance pattern, a direct result of aluminum foil surface film rupture. Therefore, reasonable control of roller roughness in each pass can improve the surface quality of aluminum foil.
Control of rolling oil
Rolling oil is the main role of the roll and rolling cooling and lubrication, and cleaning off the surface of the roll and strip material due to friction between the rollers and strip, aluminum wear and tear generated. The composition, viscosity, temperature, cleanliness and additive content of process lubricants have great influence on friction and wear during rolling.
Cleaning of Roller System in Production Process
In order to guarantee the cleanliness and glossiness of the aluminum foil surface during the rolling and slitting process and to reduce the breakage of the finished product, the rolling system of the rolling mill, coiling and slitting process has been formulated.