There are different surface finishing technologies for metals of different materials.
Aluminum--heat treatment, anodizing, brushing
Steel---black coating, heat treatment, plating
Heat treating is one kind of industrial and metalworking processes, which is used to alter the physical, or sometimes alter the chemical, properties of materials.
Heat treatment is also used in manufacture of many materials, such as glass. It involves the use of heating or chilling, usually to extreme temperatures, to complete a desired turn out, for example hardening or softening.
Heat treatment technique contains hardening, annealing, strengthening, tempering, normalizing and quenching.
Aluminum alloys can be anodized to various color, which also increases corrosion resistance, and allows dyeing (coloring), improved lubrication, or improved adhesion. But, anodizing can not increase the strengthness of aluminum workpiece. Please notice that the anodic layer is non-conductive.
Anodized surfaces of aluminum are much harder than aluminum, but have low moderate wear resistance. Anyhow, anodizing can improve the thickness and sealing of aluminum workpiece.
Brush electroplating, with partial locatized areas or the whole piece items are plated using a brush saturated, and proceed electro plating solution. The brush, especially a stainless steel part scratched with some kind of cloth material which can both holds the electro plating solution and then prevents direct contact with the item which is going to be plated, will be connected to positive end of direct-current, low voltage, power source, and another item connected to the negative end. The operator dips the workpiece which is brush plating solution, moving brush constantly and obtain the even surface which plating material distribute evenly.
Minimum Order Quantity: 1 piece.
Lead time: 5-7 working days.
1.Quick delivery time.
Payment terms: T/T, 50% deposit when placing order.
50% balance before shipment.
Shipment: FedEx / DHL/ UPS/ TNT Express is acceptable.
Or shipped by freight forwarder. (Cost-effective)