17 articles
The complete guide to guide pads in deep hole drilling. How they create self-piloting, position angles, materials, wear patterns, and their critical role in hole quality and surface finish.
The physics of self-piloting deep hole drilling tools. How asymmetrical cutting edges generate radial forces, guide pads balance them, and the tool steers itself without external guidance. Force distribution, position angle theory, and design principles.
How to calculate coolant pressure and flow rate for deep hole drilling. Formulas for gun drilling and BTA systems, pump sizing guidelines, filtration requirements, and diameter-based reference charts.
Deep hole drilling parameters for tool steels — P20, H13, A2, D2, and S7. Cutting speeds, feed rates, tool coating recommendations, and material-specific considerations for gun drilling and BTA.
A technical comparison of deep hole drilling and conventional twist drilling across 10 dimensions: tool design, chip evacuation, coolant delivery, precision, surface finish, straightness, productivity, cost, and decision thresholds with data.
A comprehensive technical guide to the four primary deep hole drilling methods — gun drilling, BTA (single-tube), ejector (double-tube), and trepanning. Detailed process mechanics, specifications, applications, and a selection decision matrix with cost data.
Proven parameters and practices for deep hole drilling Inconel 718, Inconel 625, and Hastelloy X. Cutting speeds, feeds, coolant pressure requirements, tool coatings, and real case study data from aerospace manufacturing.
Deep hole drilling applications in oil and gas — drill collars, valve bodies, BOP components, and downhole tools. Material grades, method selection, API standards, and production case studies.
Reference tables for deep hole drilling cutting speeds and feed rates across materials — carbon steel, stainless, aluminum, titanium, Inconel, cast iron, and tool steels. Gun drilling and BTA parameters with L/D correction factors.
A comprehensive introduction to deep hole drilling: definition, how it differs from conventional drilling, the three main methods (gun drilling, BTA, ejector), key components, achievable tolerances, and industry applications with technical data.
Complete guide to deep hole drilling aluminum 6061 and 7075. Cutting speeds, feeds, coolant pressure, tool selection, and chip control from manufacturer data and shop-floor experience.
Compare BTA drilling, gun drilling, and ejector drilling for deep hole applications. Detailed analysis of diameter range, feed rate, surface finish, tolerance, chip evacuation, cost per hole, and selection criteria with manufacturer data.
Complete guide to depth-to-diameter (L/D) ratio in deep hole drilling. Maximum achievable ratios by method, correction factors for speeds and feeds, and practical selection criteria.
Step-by-step decision framework for selecting deep hole drilling equipment. Covering gun drilling vs BTA vs ejector, cost per hole analysis, TCO, and machine specifications.
Proven parameters for deep hole drilling stainless steel (304, 316, duplex). Cutting speeds, feeds, coolant pressure, tool selection, and troubleshooting from real shop-floor experience.
Complete guide to surface finish in deep hole drilling. Achievable Ra values for gun drilling and BTA, control parameters, guide pad burnishing, surface defects and fixes.
Proven parameters for deep hole drilling titanium Ti-6Al-4V. Cutting speeds, feeds, coolant pressure, tooling selection, and practical tips from manufacturer data and shop-floor experience.