Device for strengthening laser cladding layer through high-frequency vibration rolling and using method thereof
A laser cladding and high-frequency vibration technology, applied in coating, metal material coating process, etc., can solve the problems of high economic cost and difficult machining, achieve uniform solute, short transfer path, and improve comprehensive performance.
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[0053] Metallographic sandpaper was used to grind and clean the cladding sample substrate. The sample substrate was H13 steel with a specification of 6mm×15mm×30mm, and the cladding material used was Ni60+30%Wc powder. After installing the sample on the cladding equipment, the parameters of laser cladding processing are as follows: laser power is 3000W×70%; scanning speed is 0.06mm / s; powder feeder speed is 0.8rpm; protective gas should be argon, gas supply speed The defocus is 12mm; the vibration frequency is 20kHz; the loading force of the roller is 10N; the tangent point between the roller and the sample is 3.5mm away from the center of the spot (ie parameter S3). The experimental results are attached Figure 8 The physical figure of the cladding sample obtained for this embodiment; Image 6 As can be seen from the metallographic diagram of the cladding prepared in this example, the components in the Ni60+30% Wc cladding are evenly distributed, and the crystal grains are u...
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