Effect of the size of abrasive particles on wear of boron, boron-copper, and boron-aluminum coatings on steel 45

Conclusions

• 1. For pressing dies used in producing electrodes from anthracite it is expedient to use combination boride coatings with high pressures, especially boron-copper coatings, by adding 4% Cu to the mixture, followed by oil quenching from 850° and tempering at 180° for 1 h.

• 2. For pressing coarse-grained anthracite with sharp angles not requiring high pressures it is expedient to use boron coatings without the addition of copper or aluminum.