High current pulsed electron beam surface treatment method for hard alloy coating tool
A pulsed electron beam, cemented carbide technology, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve the problems of poor coating compactness, large residual stress, and a large number of surface droplets, to improve hardness and wear resistance. performance, meet the requirements of high-speed cutting, and improve the effect of bonding state
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[0015] Example one
[0016] A high-current pulsed electron beam surface treatment method for hard alloy coated tools, including the following process steps:
[0017] 1. Use TiN single-layer coated cemented carbide tools with a coating thickness of 4μm. Clean the surface of the tool with acetone to remove oil stains and spare;
[0018] 2. Place the TiN single-layer coated cemented carbide tool processed in step (1) in the high-current pulsed electron beam generator, and place the knife face to be processed at the center of the electron irradiation spot. Vacuum to 10 -3 Pa above;
[0019] 3. The face of the TiN single-layer coated carbide tool needs to be processed with a high current pulsed electron beam, the acceleration voltage is 15kV, the acceleration current is 200A, the pulse duration is 10μs, the pulse frequency is 10HZ, and the number of bombardment is 50 times.
[0020] 4. After processing, take out the tool.
Example Embodiment
[0021] Example two
[0022] A high-current pulsed electron beam surface treatment method for hard alloy coated tools, including the following process steps:
[0023] 1. Choose TiAlN-coated cemented carbide tools, with TiAlN coating and ultra-fine particle strong and tough substrate, the coating grain size is about 50 nm, and the coating thickness is about 4 μm.
[0024] Clean the surface of TiAlN coated carbide tools with acetone to remove oil and other debris;
[0025] 2. Place the coated carbide tool in the high-current pulsed electron beam device to ensure that the knife surface to be processed is in the center of the electron beam irradiation spot, and the working chamber of the device is vacuumed to 5×10 -3 Pa;
[0026] 3. The processing parameters of high current pulsed electron beam are: acceleration voltage 13kV; pulse current 180A; pulse duration 5μs, pulse frequency 0.1HZ. The bombardment position was chosen to be the rake face between the tool surface and the tool tip, and t...
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