How to Control Thickness Difference of Heavy Duty Foil
From heavy duty foil to light gauge foil, the aluminum foil paper is of wide application. How to control its thickness difference? Learn more.
From heavy duty foil to light gauge foil, the aluminum foil paper is of wide application including household foil, container foil, food foil, flexible packaging foil, beer sealing foils, medicinal foils, cigarette foils, hairdressing foils, decorative foils for interior walls. How to control its thickness difference? Lets come to know its rolling production system first.
Rolling is a metal processing method that changes the cross-sectional shape and size of the metal between the rotating rolls of the rolling mill, while controlling its microstructure and properties. Steel, non-ferrous metals, some rare metals and their alloys can all be processed by rolling.
In addition to changing the shape and size of the metal, rolling can also improve the initial as-cast structure of ingots and continuous casting billets, refine grains, and improve the composition and distribution of phases, thus improving product performance.
According to the configuration and rotation direction of the rolls, the movement of the rolling stock and the shape of the product, the rolling methods mainly include longitudinal rolling, cross rolling and skew rolling. According to the degree of work hardening, recovery and recrystallization of the metal during the rolling process, rolling is divided into hot rolling, cold rolling and warm rolling.
According to the different types of rolling products, rolling can be divided into billet rolling (preliminary rolling), strip and foil rolling (strip and foil production), profile and wire rolling (profile and wire production), pipe rolling (pipe production) and the rolling of special shapes such as periodic section rolling,etc.
Difficulty control of thickness error is a feature of aluminum foil rolling. The thickness difference of 3% is not difficult to control in the production of aluminium sheet and strip, but it is more difficult to control in the production of aluminum foil. As the thickness of the aluminum alloy product decreases, many trace conditions can affect it such as temperature, oil film, and oil and gas concentration.
A roll of aluminum foil can be rolled up to hundreds of thousands of meters, and the rolling time is about 10 hours. It is easy to form errors in thickness measurement over time. The only way to adjust the thickness of aluminum foil is tension and speed. These factors all cause the difficulty of thickness control in aluminum foil rolling.
Therefore, to really control the thickness difference of the aluminum foil within 3% need many conditions like using aluminum foil blanks of qualified thickness, adjusting and controlling the reduction and roll shape during rolling, grinding the rolls according to regular parameters, stabilizing the rolling process and frequently measuring the thickness of the aluminum foil during the rolling process.
As a thick aluminum foil supplier, Haomei Aluminum has a strict control of thickness difference within 3%. Rich alloys and excellent performance make haomei aluminium foil jumbo roll a good choice for many customers. Welcome to leave message below to inquire its price.
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