Repair technology of aluminum alloy wheel hub
1. Check the damaged parts and types of the hub. Most of them often encounter scratches on the wheel hub surface, aging and blackening, deformation of the wheel hub edge, cracks and gaps in the wheel hub and so on.
2. Determine the appropriate repair process and preliminarily polish the wheel hub.
3. If the hub is deformed or cracked, it needs to be reshaped and welded first. If the hub is deformed or cracked, it needs to be reshaped before welding. Finally, check the repair area with inspection instruments to ensure the normal circumference of the wheel hub.
4. After forming and welding, the hub should be polished at the welding point to check whether the whole hub is uneven or the primer is not cleaned.
5. For minor scratches, aluminum alloy filler ash special for aluminum alloy wheels can be used to repair them, while cracks and gaps must be filled by aluminum welding process, and they still need to be polished after filling, and at the same time, the flatness of the wheel surface should be tested.
6. In order to increase the adhesion of the paint on the wheel hub surface, the aluminum alloy wheel hub is coated with oil. After spraying the primer, it is sent to a high-temperature oven for baking. Then take it out to dry until the primer hardens and polish it a little.
7. Inspect and test the repaired wheel hub, and check the safety factor of the wheel hub through circumferential test and dynamic balance test. The quality of car paint can be tested by baige test, salt spray test and paint film test.
The above repair process of aluminum alloy wheel hub is for reference only, which actually depends on the specific damage of wheel hub.
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