brown fused alumina for automobile parts

In the automobile manufacturing and maintenance industry, brown corundum is widely used in the surface treatment of automobile parts as an efficient and environmentally friendly sandblasting material.

Brown corundum properties：

Abrasives grade:

Size Distribution of brown corundum

1. Automobile parts suitable for sandblasting
Brown corundum can be used for the surface treatment of a variety of automobile parts, including but not limited to the following parts:

– Engine parts: such as cylinder blocks, cylinder heads, crankshafts, pistons, etc.

– Chassis parts: such as suspension system parts, steering knuckles, brake discs, etc.

– Body parts: such as doors, hoods, bumpers, etc.

– Wheel hubs: used to clean surface oxide layers, old coatings or increase roughness.

– Exhaust pipes: used to clean surface rust and oxide layers.

– Transmission system parts: such as gears, bearings, etc.

2. Advantages of brown corundum sandblasting
Brown corundum has the following significant advantages in sandblasting of automobile parts:

– Efficient cleaning: Brown corundum has high hardness (Mohs hardness 9), which can quickly remove rust, oxide layers, oil stains, old coatings, etc. on the surface of accessories.

– Uniform roughness: The surface roughness is uniform after sandblasting, which is suitable for subsequent spraying, electroplating or bonding processes.
– Strong wear resistance: Brown corundum particles are not easy to break, have a long service life, and reduce sandblasting costs.
– Environmentally friendly and safe: Brown corundum does not contain free silica, and no harmful dust is generated during the sandblasting process, which meets environmental protection requirements.
– Wide applicability: It can be used for automotive parts made of various materials, including steel, aluminum alloy, magnesium alloy, etc.

3. Specific application scenarios
(1) Surface cleaning
– Rust and oxide layer removal: Brown corundum sandblasting can effectively remove rust and oxide layers on the surface of automotive parts and restore the original color of the metal.
– Cleaning oil stains and old coatings: It is used to clean oil stains, old paint layers or coatings on the surface of engine parts, chassis parts, etc.

(2) Surface roughening
– Increase adhesion: The surface roughness increases after sandblasting, which significantly improves the adhesion of coatings (such as paint and electroplating layers) and extends the service life of accessories.
– Improved bonding performance: used for surface treatment of accessories that need to be bonded, such as composite parts.

(3) Repair and refurbishment
– Repair of worn parts: Clean the worn surface by sandblasting to provide a good base surface for subsequent repairs (such as welding and spraying).
– Refurbishment of old accessories: Used to refurbish old car accessories, such as wheels, exhaust pipes, etc., to restore their appearance and performance.

(4) Decorative treatment
– Surface texture treatment: Sandblasting is used to achieve special surface texture effects, such as frosted and matte, for body parts or interior accessories.

4. Recommended sandblasting parameters
– Particle size: Brown corundum particles with mesh sizes of 16 to 80 are usually used. The specific particle size is selected according to the material of the accessory and the processing requirements.
– Sandblasting pressure: Generally controlled at 0.4-0.7 MPa. Excessive pressure may damage the surface of the accessory.
– Sandblasting distance: The recommended distance is 100-300 mm, which is adjusted according to the shape of the accessory and the sandblasting effect.