When Park with titanium wire without heat. Roughness increases of 17.37 nm , but when heating the specimen found that roughness is higher up again. If the oven is equal to 23.74 nm are blowing hot air for 5 minutes, close to the workpiece is not heated, but after 10 minutes, the roughness of the workpiece to a higher value, but returned. tends to decrease as the time to add time to blow hot air up probably because of the heat in a long time, causing the particle film is tight, the higher the roughness of the surface is reduced.
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