Laser cladding in-situ synthesized complex carbide (Ti, Nb) C strengthened Ni-based coatings and preparation
A technology of composite carbide and laser cladding, which is applied in coating, metal material coating process, etc., can solve the problems of automobile mold wear and other problems, and achieve the effect of no pollution on the interface, good dispersion effect and uniform distribution
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[0027] Example 1: A laser cladding coating was prepared at a power of 2200W to obtain a coating with a smooth surface, a large height and a large width.
[0028] (1) Substrate pretreatment
[0029] Clean the surface of Cr12MoV automobile die steel (12mm×60mm×100mm) with angle grinder and acetone;
[0030] (2) Laser cladding
[0031] The composition of the nickel-based alloy powder used in the preparation of the coating is:
[0032] C: 0.33%
[0033] Si: 3.05%
[0034] B: 1.89%
[0035] Cr: 10.01%
[0036] Fe: 5.28%
[0037] Margin: Ni
[0038] Add pure Cr in the particle size range of 75-105μm to the alloy powder 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3 Powder, pure Cr 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3 The amount of powder added is 8.8%, 3.9%, 2.6% and 5.1% of the mass fraction of nickel-based alloy powder, respectively. After mixing the powder, put it into a ball mill to mix for 2 hours, and adjust the laser cladding proc...
Example Embodiment
[0039] Example 2: A coating was prepared by laser cladding at a power of 2000W to obtain a coating with a flat surface, a small height and a small width.
[0040] (1) Substrate pretreatment
[0041] Clean the surface of Cr12MoV automobile die steel (12mm×60mm×100mm) with angle grinder and acetone;
[0042] (2) Laser cladding
[0043] The composition of the alloy powder used in the preparation of the coating is:
[0044] C: 0.33%
[0045] Si: 3.05%
[0046] B: 1.89%
[0047] Cr: 10.01%
[0048] Fe: 5.28%
[0049] Margin: Ni
[0050] Add pure Cr in the particle size range of 75-105μm to the alloy powder 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3 Powder, pure Cr 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3The amount of powder added is 9%, 3.8%, 2.7% and 5.2% of the mass fraction of nickel-based alloy powder, respectively. After mixing the powder, put it into a ball mill to mix for 2 hours, and adjust the parameters of the laser cladding pr...
Example Embodiment
[0051] Example 3: A coating was prepared by laser cladding at a power of 1800W to obtain a coating with a flat surface, a small height and a small width.
[0052] (1) Substrate pretreatment
[0053] Clean the surface of Cr12MoV automobile die steel (12mm×60mm×100mm) with angle grinder and acetone;
[0054] (2) Laser cladding
[0055] The composition of the alloy powder used in the preparation of the coating is:
[0056] C: 0.44%
[0057] Si: 4.29%
[0058] B: 2.77%
[0059] Cr: 14.52%
[0060] Fe: 3.09%
[0061] Margin: Ni
[0062] Add pure Cr in the particle size range of 75-105μm to the alloy powder 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3 Powder, pure Cr 3 C 2 powder, pure Nb powder, pure Ti powder and Y 2 O 3 The amount of powder added is 10%, 3.5%, 3.0% and 5.0% of the mass fraction of nickel-based alloy powder. After mixing, the powder is placed in a ball mill and mixed for 2 hours. The parameters of the laser cladding process are adjusted....
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