Laser surface cladding method of straightening roller
A technology of straightening rollers and lasers, which is applied in the coating process and coating of metal materials, can solve problems such as holes and looseness in the surfacing coating, complicated preparation process, and reduced wear resistance of the coating, so as to achieve anti-corrosion Good nodulation performance of iron oxide scale, broad application prospects, and the effect of improving wear resistance
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[0017] Example 1
[0018] (1) Degrease the straightening roller with acetone, and clean it by sandblasting, and the roughness is Ra3~5μm;
[0019] (2) According to the weight ratio of 70%: 20%: 10%, the iron-based alloy powder with a particle size of 53-150 μm, the spherical cast tungsten carbide powder of 80-120 μm, and the cast chromium carbide powder of 100-150 μm are uniformly mixed;
[0020] (3) Adjust CO 2 The laser power is 4000W, the laser beam width is 5mm, the laser cladding speed is 300mm / min, and the laser overlap rate is 40%.
[0021] (4) Slowly cooling the straightening roll obtained in step (3) to room temperature, grinding and polishing the cladding layer, to obtain a cermet composite coating containing spherical cast tungsten carbide and cast chromium carbide.
Example Embodiment
[0022] Example 2
[0023] (1) Degrease the straightening roller with acetone, and clean it by sandblasting, and the roughness is Ra3~5μm;
[0024] (2) According to the weight ratio of 80%:12%:8%, the iron-based alloy powder with a particle size of 53-150 μm, the spherical cast tungsten carbide powder of 80-120 μm, and the cast chromium carbide powder of 100-150 μm are uniformly mixed;
[0025] (3) Adjust CO 2 The laser power is 6000W, the laser beam width is 7.5mm, the laser cladding speed is 800mm / min, and the laser overlap rate is 50%.
[0026] (4) Slowly cooling the straightening roll obtained in step (3) to room temperature, grinding and polishing the cladding layer, to obtain a cermet composite coating containing spherical cast tungsten carbide and cast chromium carbide.
Example Embodiment
[0027] Example 3
[0028] (1) Degrease the straightening roller with acetone, and clean it by sandblasting, and the roughness is Ra3~5μm;
[0029] (2) According to the weight ratio of 90%:5%:5%, the iron-based alloy powder with a particle size of 53-150 μm, the spherical cast tungsten carbide powder of 80-120 μm, and the cast chromium carbide powder of 100-150 μm are uniformly mixed;
[0030] (3) Adjust CO 2 The laser power is 8000W, the laser beam width is 10mm, the laser cladding speed is 1500mm / min, and the laser overlap rate is 70%.
[0031] (4) Slowly cooling the straightening roll obtained in step (3) to room temperature, grinding and polishing the cladding layer, to obtain a cermet composite coating containing spherical cast tungsten carbide and cast chromium carbide.
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