Patent ID: 11904571
Assignee: FULIAN YUZHAN PRECISION TECHNOLOGY CO., LTD
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A composite material structure comprising:
a first metal member defining a first hole therethrough; and
a second metal member bonded to the first metal member, a material of the first metal member being different from a material of the second metal member, a bonding surface being formed between the first metal member and the second metal member, a circular bonding line formed in the bonding surface adjacent to one end of the first hole, the second metal member comprising a main body;
wherein a sleeve is formed on the main body by hot melting, the sleeve defines a second hole therein and surrounds the second hole, and the sleeve extends into the first hole, the sleeve covers the bonding line.