The purpose and role of the pre-processing Metal Surface Powder Spraying Production Line
The purpose of the pre-painting treatment is to remove dirt on oil pollution, oxide and dust on the workpiece to provide good bases suitable for coating. Its role is mainly reflected in the following aspects: (1) enhance the adhesion of the coating film to the surface of the coating; surface.Surface Treatment Production line Pre-processing form
Pre -processing can be divided into mechanical and chemical treatment. Mechanical treatment includes: sandblasting, blasting; chemical treatment: slot immersion, spray type.
Previous processing process and typical process
There are various processes in the previous processing process, and the following factors should be considered:
(1) The composition and composition of the bottom material;
(2) Structural shape and surface status of the workpiece;
(3) The composition and cleanliness requirements of surface dirt;
(4) output and quality requirements;
(5) Supporting with the post -lane process.
The main processes of the previous treatment include skimming, water washing, tablet, phosphorurative, washing, and deodorizing water washing. Depending on the workpiece, different products, and changes in the five factors in the aforementioned five factors, they can be increased or decreased.
The plates of the home appliance industry are generally cold plates, with less oil pollution. There are generally two sedimentary processes, which are mainly phosphorusized in zinc. At present, there are also silicane treatment processes.
