Rotary files are widely used in the automotive industry. Here are some specific application scenarios:

1. Body repair: After a car crashes, the body may be dented or deformed. Rotary files can be used to polish and trim the body surface to prepare for subsequent painting and repair work.

2. Pre-painting treatment: Before painting the car, the body surface needs to be thoroughly cleaned and polished to ensure that the paint can be evenly attached to the body. Rotary files can effectively remove old paint, rust, and other impurities.

3. Parts manufacturing: During the manufacturing process of automotive parts, rotary files can be used to polish and trim the edges of parts to ensure precise fit and smooth transition of parts.

4. Engine repair: During engine repair, rotary files can be used to clean and polish engine parts such as cylinder heads, pistons, and crankshafts to improve engine performance and extend their service life.

5. Interior parts processing: Automotive interior parts, such as plastic or wooden decorative parts, can be restored to their original gloss and appearance after polishing and trimming with rotary files.

6. Deburring: Newly manufactured or welded auto parts may have burrs, and rotary files can be used to remove these burrs to ensure smooth and safe parts.

7. Customization and modification: During car customization and modification, rotary files can be used to personalize and shape body parts.

8. Detail repair: For repairs to car details, such as lights, door handles, bumpers, etc., rotary files can provide fine grinding and finishing.

When using rotary files, you should choose the right grinding head and speed to suit different materials and work requirements. At the same time, for safety reasons, you should wear appropriate protective equipment, such as safety glasses, dust masks, and gloves.