case study

Increasing the roughness of a surface using a laser to counteract the loosening of bolts

An international manufacturer of battery compartments for electric vehicles (EV) wanted to prevent mounting bolts working loose as the result of vehicle vibration.
The manufacturer wanted to intentionally damage the surface around the mounting holes and to make it rough.

Laser

Standard

Automotive

The challenge

A well-known OEM wanted to make the aluminium alloy surface around bolts rough using high-power laser beams, for the purpose of increasing friction, in order to prevent bolts working loose.
Roughness diameter: 25mm, rough around 6 holes with a diameter of 9mm, Ra ≥ 13, Rz ≥ 90.

All the equipment needs to be powerful and durable, easy to integrate and interface with multiple modes of communication.
It also needs to be flexible and reliable in both automatic and manual mode.

The SIC MARKING

solution

As this operation generates a large quantity of aluminium dust, a blowing and suction device was added beneath the lens, to protect it and prevent it becoming clogged.

As the cycle time is around 20s per hole, the client opted for the high-power fiber laser marking solution (100W), on the advice of our experts.