Alloy powder for gray pig iron laser cladding repair and preparation method thereof
A technology of alloy powder and laser cladding, which is applied in the coating process and coating of metal materials, can solve problems such as difficult machining, large difference in expansion coefficient, and unstable performance, so as to reduce the tendency of structure formation and solve poor weldability , Improve the effect of crack resistance
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Embodiment 1
[0027]An alloy powder for laser cladding repair of gray cast iron, including: Ni, Cu, C, Al, Si, Ca, Ba, Co elements in the alloy composition, and an appropriate amount of rare earth element Y in the alloy composition 2 o 3 , La 2 o 3 And Ce, its chemical composition is by weight percentage: Cu: 18%; C: 3.2%; Si: 1.8%; Al: 0.01%; Ba: 0.005%; Ca: 0.004%; Co: 0.92%; 2 o 3 :0.002%; La 2 o 3 : 0.023%; Ce: 0.015%; Ni: balance.
[0028] The preparation method of above-mentioned alloy powder comprises the following processes:
[0029] 1. Ni, Cu, C, Al, Si, Ca, Ba, Co and rare earth element Y 2 o 3 , La 2 o 3 , Ce are prepared according to the above-mentioned weight percentage ratio, and the raw materials for making metal powder are ready.
[0030] 2. Start the intermediate frequency, according to the requirements of the smelting process, put in the metal to start smelting, generally put in the metal that is easy to oxidize in the later stage of melting; the melting tempera...
Embodiment 2
[0039] An alloy powder for laser cladding repair of gray cast iron, including: Ni, Cu, C, Al, Si, Ca, Ba, Co elements in the alloy composition, and an appropriate amount of rare earth element Y in the alloy composition 2 o 3 , La 2 o 3 And Ce, its chemical composition is by weight percentage: Cu: 19%; C: 2.3%; Si: 1.9%; Al: 0.03%; Ba: 0.006%; Ca: 0.005%; Co: 0.5%; 2 o 3 : 0.01%; La 2 o 3 : 0.02%; Ni: balance.
[0040] Its preparation method is identical with embodiment one.
Embodiment 3
[0042] An alloy powder for laser cladding repair of gray cast iron, including: Ni, Cu, B, Si, Fe, C, Ba, Ca, Mn elements in the alloy composition, and an appropriate amount of rare earth element Y in the alloy composition 2 o 3 , La 2 o 3 And Ce, its chemical composition is by weight percentage: Cu:20%; B:1.4%; Si:2.0%; Fe:0.8%; C:0.03%; Ba:0.007%; Ca:0.006%; ;Y 2 o 3 : 0.02%; La 2 o 3 : 0.023%; Ce: 0.02%; Ni: balance.
[0043] Its preparation method is identical with embodiment one.
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