Optimization of Diamond Drilling Using an Extreme Experimental Design

Abstract

The results of experimental studies in selecting optimum characteristics for diamond drills and optimum treatment procedures for drilling holes 1 – 70 mm in diameter in hard brittle nonmetallic materials such as quartz, ceramics, glass, and glass ceramics are considered. To obtain experimental-mathematical models, a randomized experimental design was used at the screening stage, i.e., a half-replica of the full factorial experiment 2³, and an orthogonal compositional design of the second order of type 3⁵ was used at the main stage. The diamond drilling process was optimized using simplex methods. The correlation of the estimated values with experimental data showed the adequacy of the results obtained.