Thermal Finishing Machine Boosts Productivity

The P400 TEM machine from Kennametal Extrude Hone is capable of finishing customized components such as complex gears, pinions and valves.

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The P400 TEM machine from Kennametal Extrude Hone is capable of finishing customized components such as complex gears, pinions and valves. The company’s thermal energy machining (TEM) strategy uses a pressurized mixture of a combustible gas and oxygen injected at 5 to 10 atm of pressure into a containment chamber. An ignition system ignites the gas mixture, releasing heat energy from the oxidation of fuel in a 20-msec. high-speed energy wave. Internal burrs and flashings with raised surfaces and thin cross-section features are burned away. Because the gas mixture engulfs the entire workpiece, all internal and external surfaces are exposed to rapid oxidation, and internal cross-drilled holes and intersecting edges that are difficult or impossible to reach are processed quickly. The finishing process is said to provide high reliability and repeatability when combined with washing.

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