1. Repair method of automobile wheel hub
Step 1: Check the rim situation
Repair scope: aluminum alloy wheels and rims with original coating materials.
Suitable for wheels of various sizes and shapes.
Step 2: Remove the tires
1. Remove the tire first.
2. Let go of the tire pressure.
3. Squeeze the tire into a flat state and directly disassemble the rim on the tire setting machine (this can prevent water from penetrating into the tire during construction).
Step 3: Check the damage to the rim
Preparation: Prepare the color according to the original color of the rim.
(1) The rim has no gaps, but the surface is scratched, yellowed, or cracked
1. Choose different types of sandpaper for sanding according to different degrees of damage.
2. Use rim repair ash to fill in the scratched area for repair.
3. Bake dry with special equipment.
4. Use 180#—320# sandpaper to polish one by one.
5. Use 600#, 800# dry sanding paper to polish the entire wheel hub surface to a matte finish.
6. Spray the special primer for the wheel hub on the scratch fill.
7. Put it in the equipment at 100-120 degrees for 60 minutes to dry.
8. Polish it again to a matte finish.
(2) There is a gap in the rim
Procedures for using special materials for wheel hub gaps
1. Polish the damaged part first.
2. Take out the material and take the corresponding amount of material according to the size of the damaged area (Note: Check the size of the damage before repairing, if it exceeds 3 cm in width and depth, it is not recommended to repair, if the degree of loss of the gap is very shallow, it should be used The hacksaw is slightly deeper, so that the repaired gap will be firm).
3. Pinch the cut material with your fingers to make it soft and even. If you find that there are small hard objects in it, you can remove it, so that the repair effect will be better.
4. Press the pinched material tightly on the gap of the damaged rim, which can be filled according to the model of the wheel hub.
5. Use special equipment for heating and drying, and the effect of baking with short-wave infrared baking lamps is better.
6. After the material is completely cured (time: the temperature is above 25℃ and 20 minutes to dry), sand it with 180-320 sandpaper until the wheel hub reaches the basic shape, and then spray it with a special quick-drying 2K car special primer, then sand it, and then cooperate with it. Rim repair gray repair; after it is cured, continue to polish until the surface appears smooth, then spray silver paint to bake it, and finally spray special materials for wheel repair. (Note: All of the above-mentioned primers must be completely dried to avoid serious impact on the hardness of the surface after spraying the material).
The fourth step: edge banding
1. Cover the rim with a universal masking film.
2. Wipe the surface of the rim with a degreasing agent.
3. Use equipment to bake dry.
4. Use a dust cloth to wipe off the surface dust.
Step 5: Spray primer and color paint
1. Spray the primer evenly on the entire or damaged part. After drying, continue to find out whether there is trachoma. All trachoma must be filled with repair ash (Note: Do not use "fill eye red ash").
2. Spray the mixed paint evenly on the rim.
Step 6: Spray special repair materials
1. Allocate special materials for wheel hub repair.
2. Pour the prepared materials into the special repair spray gun.
3. Adjust the spray gun atomization.
4. Spray two uniform sprays on the surface of the rim at one time.
5. Put it in the oven and control the temperature at 100 degrees for 60 minutes.
Step 7: Check the rim
1. Check whether there is a small amount of dust particles on the surface of the rim.
2. If there is, it can be lightly polished with 2000# water scrub paper.
3. Use a high-speed polishing machine to pour a small amount of microcrystalline polishing glaze for polishing.
4. Wipe the rim with a clean towel and check whether the rim is shiny.
Step 8: Installation
Install tires,
Small wheels are related to the safety of our lives. Paying attention to the maintenance of the wheels and mastering the repairing methods of automobile wheels is a compulsory course for car owners.
Second, the daily maintenance of automobile wheels
When the temperature of the wheel hub is high, it should be allowed to cool naturally before cleaning. Never use cold water to clean it; otherwise, it will damage the aluminum alloy wheel hub and even deform the brake disc, which will affect the braking effect. In addition, cleaning the aluminum alloy wheels with detergent at high temperatures will cause chemical reactions on the surface of the wheels, loss of luster, and affect the appearance.
When the wheel hub is stained with tar that is difficult to remove, if the general cleaning agent does not help, you can try to remove it with a brush, but do not use a brush that is too hard, especially an iron brush, to avoid damage to the surface of the hub.The copyright belongs to the author www.jihoowheels.com .
