Castings Made with Hard-Particle Dispersions and Facecoats

摘要

The abrasive environments in most mines and mineral processing plants cause equipment to wear rapidly. The Bureau of Mines is conducting research to enhance the wear resistance of iron-base alloys. The report describes the results of investigations on two methods for (1) incorporating hard-material particles within steel castings and (2) fusing hard-material particles to the surfaces of steel castings. In the first method, a hollow steel electrode is packed with hard particles and vacuum-arc-melted into an ingot. A second electrode is made from the ingot, vacuum-arc-melted, and cast into a mold.