Glossary-terms • October 30, 2018 Knoop hardness number (HK) Number related to the applied load and to the projected area of the permanent impression made by a rhombic-based pyramidal diamond indenter…
Glossary-terms • October 30, 2018 Knoop hardness test Test for determining the hardness of a material in which calibrated machines force a rhombic-base pyramidal diamond indenter having specifi…
Glossary-terms • October 30, 2018 knurling Chipless material-displacement process that is usually accomplished on a lathe by forcing a knurling die into the surface of a rotating wor…
Glossary-terms • October 30, 2018 knurling tool Normally a lathe tool for impressing a design on a rod or handle to improve gripping or provide decoration.
Glossary-terms • October 30, 2018 lapping Finishing operation in which a loose, fine-grain abrasive in a liquid medium abrades material. Extremely accurate process that corrects min…
Glossary-terms • October 30, 2018 lapping compound, powder Light, abrasive material used for finishing a surface.
Glossary-terms • October 30, 2018 laser machining Intensified, pulsed beams of light generated by lasers—typically carbon dioxide or neodium-doped yttrium aluminum garnet (Nd:YAG)—that dril…
Glossary-terms • October 30, 2018 cavity type laser machining Process that removes material by focusing a concentrated laser beam onto the workpiece. The material is melted and vaporized. In the cavity…
Glossary-terms • October 30, 2018 lathe Turning machine capable of sawing, milling, grinding, gear-cutting, drilling, reaming, boring, threading, facing, chamfering, grooving, knu…
Glossary-terms • October 30, 2018 finishing Any of many different processes employed for surface, edge and corner preparation, as well as conditioning, cleaning and coating. In machin…
Glossary-terms • October 30, 2018 finishing tool Tool, belt, wheel or other cutting implement that completes the final, precision machining step/cut on a workpiece. Often takes the form of…