Auger Screw Coated for Abrasion Resistance

Client: Machine ShopIndustry: Manufacturing

Challenge

An auger screw at a machine shop needed protection against abrasive wear. Abrasive material moving along the flights thins the steel over time, costing throughput and edge profile and eventually forcing a weld overlay or a replacement screw.

Belzona Solution

Rumford Industrial Group coated the auger with Belzona. The application area was first bead blasted to give a clean surface profile for bonding. The leading surface of the flights, which takes the abrasive load, was then coated with Belzona 1812 at 125 mils thick, and the opposite side and shaft were coated with Belzona 1321 at 20 mils thick. The system is cold applied, so no hot work was needed.

Belzona 1812 (Ceramic Carbide FP)
Belzona 1321 (Ceramic S-Metal)

Result

The auger now has a thick, abrasion-resistant wear layer on its working face and a protective coating on the opposite side, extending its service life without weld overlay or a replacement screw.

Project Photos

The stainless auger screw at the machine shop, with its drawing marking the coating areas.

Surface prep: the application area bead blasted to create a bonding profile.

Blast profile across the flights and shaft, ready for coating.

Belzona 1321 applied at 20 mils on the side opposite the leading surface.

Belzona 1812 applied at 125 mils on the leading surface of the flights.

Close view of the Belzona 1812 wear layer on the leading flights.

Finished: 1812 on the working face, 1321 on the opposite side.