A laser cladding powder for martensitic stainless steel
A technology of martensitic stainless steel and laser cladding, which is applied in the coating process and coating of metal materials, can solve the problems of high processing cost and limited powder types, so as to reduce processing cost, reduce preparation cost and expand composition Combination Type Effects
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Embodiment 1
[0029] Step S1, weighing the cladding powder. The cladding powder includes base metal powder with a mass percentage of 45% and hard particle powder with a mass percentage of 55%, wherein the base metal powder is 1Cr13 stainless steel powder, and the hardness of 1Cr13 stainless steel powder is 39HRC, and the particle size is 30-80μm; The hard particle powder is WC ceramic particle powder, and the fluidity of the WC ceramic particle powder is 24.61sec / 50g, and the particle size is 5-40μm.
[0030] In this embodiment, the basic metal powder is 1Cr13 stainless steel powder in Fe-based powder. In other embodiments, according to the different requirements for cladding layer performance, the basic metal powder can also use other types of Fe-based powder or It is any one of Ni-based powder, Co-based powder and other metal powders. Similarly, in this embodiment, the hard particle powder is WC ceramic particle powder. In other embodiments, according to the different performance require...
Embodiment 2
[0037] Adopt the method same as embodiment 1 to carry out laser cladding treatment to 3Cr13 stainless steel plate, its difference is only: the mass percent of 1Cr13 stainless steel powder in the laser cladding powder is 70%, and the particle size of 1Cr13 stainless steel powder is 70~120 μ m, The hardness is 38HRC; the mass percentage of the WC ceramic particle powder is 30%, and the particle size of the WC ceramic particle powder is 30-60 μm, and the fluidity is 27.5 sec / 50g.
[0038] Among them, during the laser cladding process, the powder feeder kept feeding powder evenly, and no abnormal phenomena such as powder blocking occurred, and finally obtained such figure 2Metallographic diagram of the cladding layer shown. pass figure 2 It can be seen that the WC ceramic particles are evenly distributed in the cladding layer, and there are no defects such as pores and cracks. The hardness test result of the cladding layer is 60HRC, which also meets the 53HRC hardness requireme...
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