Coating material for replacing hard chromium plating and laser-cladding preparation method thereof
A coating material and laser cladding technology, applied in coating, metal material coating process, etc., can solve problems such as peeling, high pollution, bubbling, etc., and achieve the effect of large profit margin and low price
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Embodiment 1
[0015] (1) Select a typical Fe-based material formula, C: 0.8 wt%, Cr: 4.0 wt%, Ni: 2.0 wt%, Si: 0.4 wt%, Mo: 5.0 wt%, W: 6.0 wt%, Mn: 0.3 wt%, balance Fe;
[0016] (2) The Fe-based alloy powder is obtained by argon atomization, and the powder with a particle size range of 10-50 μm is obtained after sieving;
[0017] (3) Select the heavy-duty engine piston ring groove as the strengthening object, and the piston material is 16CrMo4-4. Sandblast the area to be strengthened or repaired in the piston ring groove, and use compressed air to remove particles and debris, and then scrub the surface with alcohol ;
[0018] (4) Using the laser cladding process based on synchronous powder feeding technology to prepare Fe-based coating on the surface of the part to realize the strengthening or repair of the piston ring groove, the specific process parameters are set as follows: the output power of the semiconductor laser is 8 KW, and the rectangular spot size is 12×2 mm, the beam scannin...
Embodiment 2
[0027] (1) Select a typical Fe-based material formula, C: 0.90 wt%, Cr: 6.0 wt%, Ni: 2.5 wt%, Si: 0.6 wt%, Mo: 6.0 wt%, W: 8.0 wt%, Mn: 0.45 wt%, balance Fe;
[0028] (2) The Fe-based alloy powder is obtained by water atomization, and the powder with a particle size range of 10-50 μm is obtained after sieving;
[0029] (3) Select the piston rod of the construction machinery industry as the object to be strengthened. The material is 45 steel. Sandblast the part to be strengthened or the area to be repaired, and use compressed air to remove particles and debris, and then scrub the surface with alcohol;
[0030] (4) Use the laser cladding process based on synchronous powder feeding technology to prepare Fe-based coatings on the surface of piston rod parts to realize the strengthening or repair of parts. The specific process parameters are set as follows: the laser cladding power is 9 KW, and the rectangular spot is used , the spot size in the length direction is 16×3 mm, the bea...
Embodiment 3
[0039] (1) Select a typical Fe-based material formula, C: 1.0 wt%, Cr: 8.0 wt%, Ni: 3.0 wt%, Si: 0.8 wt%, Mo: 7.0 wt%, W: 10.0 wt%, Mn: 0.6 wt%, balance Fe;
[0040] (2) The Fe-based alloy powder is obtained by argon atomization, and the powder with a particle size range of 10-50 μm is obtained after sieving;
[0041] (3) Select the hydraulic prop in the coal machinery industry as the object of laser strengthening, and the material is 27SiMn. Sandblast the part to be strengthened or the area to be repaired, and use compressed air to remove particles and debris, and then scrub the surface with alcohol;
[0042] (4) The laser cladding process based on synchronous powder feeding technology is used to prepare Fe-based coatings on the surface of hydraulic prop parts by laser cladding to realize the strengthening or repair of parts. The specific process parameters are set as follows: the output power of CO2 laser is 10 KW, The size of the rectangular spot is 20 mm×4 mm, the scannin...
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