About half of all aluminium castings are made using high-pressure die-casting (HPDC), in which a molten aluminium alloy is injected under pressure into a steel mould, or die.

Make an approach to the factors that effect the quality of cast aluminium positive pole oxidized colouring, based on this optimum technology, find out the way of getting the optimum membrane layer.

Key technique of casting aluminium strip with electrolytic aluminium liquid is summarized. The choice of technological parameters of smelting and casting and quality control is introduced.