Bimaterial Flight Assembly for an Elevator System for a Wheel Tractor Scraper

摘要

An improved flight assembly for an elevator used with a wheel tractor scraper is provided. The flight assembly comprises a support member made of one type of material and an edge plate made of a second type of material that is harder and less flexible than the support member material. The edge plate is mounted to the support member and includes the cutting/digging edge of the flight assembly. In one embodiment the support member is made of a rolled steel material having a hardness of about 205 BHN and the edge plate is made of a hardened, heat treated steel material having a hardness of between about 360 BHN and about 440 BHN.