Weartech SHS Coating and Overlay Wear Plate 

Problem: Erosion and Corrosion

Rotary vane feeders in cement plants deliver material in process to the next station. Components inside rotary vane feeders operate in a high temperature environment and wear quickly from exposure to sliding abrasion, fine particle erosion and corrosion.

Vane pockets on a rotating drum inside the rotary vane feeder are fabricated from unprotected steel and not sufficiently resistant to sliding abrasion, fine particle erosion and corrosion. During service, surface material loss on the vane pockets from wear and corrosion is severe and the drum requires replacement after 6 months.

Weartech at a copper ore surface mine in the southwest United States

SOLUTION: WEARTECH OVERLAY WEAR PLATE AND THERMAL SPRAY COATING

To extend the life of rotary vane feeder drums at a cement plant in South America, Weartech SHS9192U wear plate, 0.748 in (19 mm) thickness, is installed in the center of each vane pocket for abrasion and impact resistance. A Weartech SHS7170 WTWAS coating, 0.039 in (1 mm) thickness, is applied to the wear plate and remaining drum surface for wear and corrosion resistance.

Industrial Centrifugal Blower

Unprotected Drum After 6 Months 

Vane pockets are damaged by wear and corrosion and must be replaced.

Worn steel fan blades

Weartech Protected Drum at Installation

Weartech overlay wear plate and thermal spray coating are for resisting wear and corrosion.

Steel fan blades with Weartech Coating

Weartech Protected Drum After 12 Months

Vane pockets show minimal wear
and no corrosion damage.

RESULT: WEARTECH EXTENDS COMPONENT LIFE BY MORE THAN 2X

After 6 months of service, the unprotected drum suffered significant wear and corrosion damage and required replacement. An inspection after 12 months, the drum protected by Weartech SHS showed minimal material loss from surface wear to be 0.059 in (1.5 mm) and no corrosion damage.