Abstract: The paper introduces metal materials and their surface treatment for bonding of composites, and tests the sandblast parameters of TC4 titanium alloy, 5052 aluminum alloy, 304 stainless stell and 4J36 invar stell. Taking sandblast time as variable as well as tensile shear strength between metal and composite after bonding to verify the surface condition under metal sandblasting. The test demonstrates that appropriate sandblasting parameter of TC4 titanium alloy is 30 s±5 s/15 cm² and 20 s±5 s/15 cm² for 052 aluminum alloy, 45 s±5 s/15 cm² for 304 stainless stell, 25 s±5 s/15 cm² for 4J36 invar stell under the condition of 40 mesh quartz sand, the sandblasting distance of 150 mm, the sandblasting angle of 45°, the sandblasting pressure of 0.5 MPa.

Key words: sandblast, bonding, metal, composite