HRC65 Thread Mill Feed Rate: How to Calculate and Optimize Feed for Hardened Steel
Last month, we assisted a German automotive mold shop running a batch of SKD11 stamping inserts hardened to HRC 62–64. The operator drilled the pilot hole and loaded a brand-new solid carbide tool for an M6×1.0 internal thread. Halfway through the first helical interpolation pass, a sharp snap echoed across the shop floor. The tool
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