Glass & Rubber Industries

Adhesion of Dust Generated by Shot Blasting

Shot blasting is a method for removing burrs or drawing patterns on molded parts by applying abrasive particles called "beads" against the workpiece. During the process, the workpiece acquires a significant electrostatic charge due to collisions.
The generated dust is also charged so it strongly adheres to the workpiece. Even when the dust is removed with an air blow, it adheres again due to the electrostatic charge.

Adhesion of Dust Generated by Shot Blasting

Conventional countermeasures

Conductive spray

  • It cannot prevent the adhesion of foreign particles completely.
  • The surfaces of the workpieces look oily, which ruins the appearance.

Countermeasures with static eliminators (ionizers)

The problem can be solved quickly without the risk of the workpieces getting dirty.

Countermeasures with static eliminators (ionizers)

Improvements and Effects
Words from the worksite

Reduced cost for addressing complaints and for spray

Cost of lot return: $2,000 (assuming that a complaint arises once every three months). → $8,000/year

Cost of spray: $100/month x 12 months = $1,200/year

The unsatisfactory appearance caused by the spray has been solved.