Aluminum foil production equipment and blank selection and quality requirements
2017/8/14 17:38:45
Aluminum foil production equipment
The unit uses the most advanced and wide design of the ACHENBACH rolling mill, the rolling mill equipped with ACHENBACH advanced AGC thickness control system, AFC plate automatic control and control system. Equipment, the maximum reduction rate of up to 70%, to provide a basis for the reduction of production.
Blank selection and quality requirements
The choice of thickness, width and condition of aluminum foil blank
Thickness of the blank: the original five rolling double-aluminum foil when the choice of aluminum foil bad material thickness range of 0.35mm ~ 0.5mm between the use of four rolling double-zero aluminum foil to avoid excessive pressure caused by excessive Surface quality defects generally use the thickness of 0.35mm below the blank, the company used the thickness of 0.28mm. Thickness tolerance is generally required to control within ± 3% of the thickness, requiring strict or even control within ± 2% of the thickness.
Billet width: The width of the material is determined by the maximum rolling width, equipment capacity and finished product specification of the rolling mill, and taking into account the trimming amount. According to the technical parameters of the mill The company's maximum entrance width of 1980mm. Width tolerance is generally required to control within ± 2mm, the requirements should be strictly ± 1.0mm.
Ingredient Weight: The weight of the blank depends mainly on the mechanization of the equipment and structural properties. The greater the weight, the higher the productivity of geometric waste reduction, so to improve the volume weight is to improve production and reduce costs and effective measures. The company's largest rolling weight of 12870kg.
Billet properties: aluminum foil billet state is divided into soft state, semi-hard state, and full hard state three.
Quality of billet metallurgy
The melt used in the production of aluminum foil blanks must have high metal purity, the melt content of slag, the gas content should be low, the melt after refining the hydrogen content must be controlled at 0.12mL / 100g aluminum below the production of rolling stock does not produce gas Road, slag and other internal quality defects, grain size to a level.
The surface quality of the blank
The surface quality of the wool affects the surface quality of the aluminum foil. The surface quality of the blank to be strictly controlled, the surface should be clean, smooth, no corrosion, the surface is not allowed to have oil spots, holes, metal and non-metallic press, Obscure, scratches and other defects.
The quality of the blank
The aluminum foil wool material requirements of the plate control within 15I. Not allowed to have both sides loose or tight on both sides, two ribs or two ribs tight, the middle loose and other bad plate shape. The ideal state of the plate shape should be parabolic, and the crown is required to be controlled within 1% of the thickness.
Technical requirements for aluminum foil wool
The technical standard of aluminum foil wool should cover the following 12 aspects: alloy and state, coil size and tolerance, chemical composition, performance and organization, surface roughness, flatness, convex rate, internal and external quality, Packaging requirements, quality certificates and other requirements. As a technical standard, each content should have specific technical requirements.