Principal investigator: Fei Ren
University: Temple University
Industry partner: Quaker Houghton
17-4 precipitation hardened (17-4 PH) steel is widely used in aerospace, medical, and maritime industries due to its high strength and corrosion resistance. However, its high strain hardening and low thermal conductivity create challenges in machining, leading to significant tool wear. Traditional machining fluids rely on sulfur- and phosphorus-based extreme pressure (EP) additives, which raise environmental concerns. This study investigates novel machining fluids for 17-4 PH steel in different heat-treated conditions (soft condition A and hardened condition H900). We will evaluate three cutting fluids from Quaker Houghton: a water-based fluid, one with traditional EP additives, and one with an environmentally friendly EP alternative. Post-machining hardness and near-surface grain structures of drilled and tapped holes will be analyzed to understand fluid performance. The findings will provide valuable insights into developing effective, eco-friendly machining fluids for 17-4 PH steel, which will enhance manufacturing processes and tool longevity in industries using this material.