Laser-cladded composite wear-resisting layer on surfaces of copper and copper alloys and preparation method
A laser cladding and copper alloy technology, applied in the field of material science, can solve the problems of high price, complex process, insufficient coating toughness, etc., and achieve the effect of compact structure, high efficiency and low energy consumption
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[0029] Example 1:
[0030] In this embodiment, a pulsed Nd:YAG laser is used to laser cladding the composite wear-resistant layer on the surface of a 500×200×10mm red copper plate. The preparation method is carried out in the following steps:
[0031] 1. Red copper plate surface activation treatment
[0032] The surface of the copper plate with a thickness of 10mm is sandblasted or the copper plate is roughened with 60# coarse sandpaper to remove surface rust to enhance the bonding strength between the copper alloy surface and the cladding layer, and then use acetone to clean and remove oil stains. Dry at low temperature (<100℃) or air dry.
[0033] 2. Prepare nickel-based alloy raw materials and preset transition layer
[0034] The nickel-based alloy raw materials for the transition layer are prepared according to the following components (weight percentage): Cu 20.0%, Al 6.0%, Si 0.3%, Zr 1.7%, and the balance is Ni. The above-mentioned raw materials have a particle size of 200-400 ...
Example Embodiment
[0044] Example 2:
[0045] In this embodiment, a pulsed Nd:YAG laser is used to laser cladding the composite wear-resistant layer on the surface of the copper plate of the continuous casting slab mold. The copper plate is a Cr-Zr-Cu alloy. The coating thickness is required to be 0.8mm at one end and 2.0mm at the other end. . The preparation method is carried out as follows:
[0046] 1. Surface pretreatment of copper plate
[0047] Use 60# coarse sandpaper to manually polish the surface of the crystallizer copper plate to remove oxides and rust, and then clean the surface with acetone to remove oil stains.
[0048] 2. Preparation of nickel-based alloy raw materials
[0049] The nickel-based alloy raw materials for the transition layer are prepared according to the following components (weight percentage): Cu 30.0%, Al 8.0%, Si 0.6%, Zr 2.4%, and the balance is Ni. The above-mentioned raw materials have a particle size of 200-400 mesh and are uniformly mixed.
[0050] 3. Preset, laser c...
Example Embodiment
[0058] Example 3:
[0059] The present invention performs laser laser cladding composite wear-resistant layer on the surface of phosphorous deoxidized copper (TP1), and the preparation method is carried out according to the following steps:
[0060] 1. Surface pretreatment of copper plate
[0061] The surface is sandblasted to remove oxides and rust, and then clean the surface with acetone to remove oil stains.
[0062] 2. Prepare nickel-based alloy raw materials, preset and prepare transition layer by laser cladding
[0063] The nickel-based alloy raw materials for the transition layer are prepared according to the following composition (weight percentage): Cu 25%, Al 7%, Si 0.5%, Zr 2.0%, and the balance is Ni. The above-mentioned raw materials have a particle size of 200-400 mesh and are uniformly mixed.
[0064] 3. Preset, laser cladding to prepare transition layer
[0065] The above-mentioned nickel-based alloy powder is fed into the laser melting pool with a roller-type negative pr...
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