The spraying production line of automobile aluminium wheel consists of pretreatment line, bottom powder line, finishing line, bright powder line, spraying line, intelligent conveyor line, loading robot and so on.
Pretreatment line process:
Top part Hot water washing Pre-degreasing Main degreasing
1. Water washing 2. Direct spraying water supplement
Acid washing direct spraying supplementary water pure water washing
1. pure water washing 2. passivation direct spraying supplementary water pure water washing
1 pure water washing 2 passivation direct spraying supplementary water.
Wash pure water 3 to pure water 4 to pure, direct injection to fill water>Pure water 5 to spray>Dripping / blowing water.
_Water drying oven_Natural cooling_Robot parts.
Floor line technology: (after flour finishing and grinding)
Robot Upper Part Dust Removal Powder Spraying Artificial Powder Absorption Robot Transfer Fixture Cleaning.
Powder Solidification Cooling Robot Transfer.
Bright powder yarn process:
Robot Upper Part Dust Removal Powder Spraying Artificial Powder Absorption Robot Transfer Fixture Cleaning.
Powder Solidification Cooling Inspection of Lower Parts.
Painting line process:
Robot Top Part Online Grinding Dust Removal Preheating Primer Spraying Primer Leveling Primer Leveling.
Spray-coat varnish Cover varnish leveling Paint curing Cooling Inspection of lower parts.
The spraying process of automobile aluminium wheel is complex after changeable. It is electrophoresis primary protagonist primers.There are also matching main engine factory hub after primer or primer, do finishing process, and then return to pre-treatment, and then cover up.
In most powder spraying processes, in order to prevent the fixture from being polluted and the influence of residual powder on the product, it is common practice to separate the powder spraying line from the powder drying line, and to replace automatic spraying with robotic rotating parts In the middle.
Transport Mode of Automobile Hub:
The is The whole pretreatment logistics should take into account the turnover and transfer of powder spraying line and paint spraying line, as well as the return line after finishing. The dehydration after pretreatment is very important because there are many holes in the hub And many places where the water is stored. We should pay attention to using hot air to blow water will dry faster. Our company invented to use the heat of the waste gas from pretreatment to dry the hub after dripping. It is convenient to save energy And reduce energy consumption, so as to serve customers faster and better.
After turning parts of the robot, the first thing to do is to shade, then dust removal and powder spraying, the product through turning parts to the solidification drying furnace, and then treatment tools to absorb powder cleaning. The powder spraying room adopts fixed powder Spray curing system with positive and reverse systems. Powder curing furnaces mostly exist in the form of bridge curing furnaces, which are easy to cut off heat and save energy. Curing temperature should be 180-220 degrees, drying time 48-50 minutes, forced cooling The driving chain adopts the cross chain, and the eccentric chain of the cross chain is mostly used. Hub climbing angle should not be too large, generally recommended in about 8-10 degrees, because the hub is very heavy, Such as too large angle, increase the friction of the chain, the load of the fixture is also very high, the safety factor also increases.