Study Of ZChSnSb11-6 And Steel Matrix Brazing Technology

In this paper, we solve ZChSnSb11-6 in centrifugal casting alloy and steel matrix method in the process of production the composition segregation phenomenon, and the centrifugal casting process of As and Cd oxidation to produce harm, put forward the method of using brazing combined ZChSnSb11-6 alloy and steel matrix, by the steel substrate surface of different processing methods, the different brazing temperature and test pressure, to explore the transition of brazing sample the change of microstructure and mechanical properties. By metallographic microscope and SEM observation of the transition layer of organizational change, by EPMA, EDS and XRD testing elements in the transitional layer organization change and phase change, using the microscopic hardness tester, friction and wear testing machine and universal tensile testing machine test, the mechanical properties of brazing sample.Experimental results show that the method of using brazing enables ZChSnSb11-6 good bonding alloy and steel matrix, and weld transition layer organization and ingredients have obvious change.The ZChSnSb11-6 alloy using the physical method treating the sample surface, under the brazing temperature of 280℃ welding has obvious weld joint and the lack of penetration area, but with the increase of temperature, no welding seam and the lack of penetration area. When the brazing temperature reaches 320℃, the growth of the perpendicular to the soldering interface treeing, with the increase of brazing temperature, transition layer treeing and the trend of babbitt organizations have grow up. By EDS spectrum and EPMA analysis, it can be seen in ZChSnSb11-6 in the process of the brazing alloy and steel substrates are mainly Fe and Sn element migration, Cu in transition layer organization has obvious enrichment phenomenon. Using X-ray diffraction (XRD) analysis, can see the surface physical treatment ZChSnSb11-6 alloy phase of transition layer and steel matrix organization by Sn and Sb, Cu2Fe3, FeSb2 and Cu3Sn formation, in the process of brazing alloy epsilon and beta phase disappeared, create new Cu2Fe3, FeSb2 and Cu3Sn phase. ZChSnSb11-6 alloy and steel matrix joint tensile test results show that the fracture strength with the increase of brazing temperature increase first and then, under the pressure of 70N,600 CW and 1000 CW treating steel and steel matrix fracture strength of 140 MPa and 135 MPa, respectively in 50N,1000 mesh is 125 MPa.ZChSnSb11-6 alloy is used the method of CuCl2 processing samples, the solution at 280℃ of brazing temperature welding has obvious weld joint and the lack of penetration area, but with the increase of temperature, at 320 ℃ and 360℃ in ZChSnSb11-6 alloy and there is an obvious transition layer between the steel substrate, but the transition layer and ZChSnSb11-6 there is a obvious cracks between alloy and steel matrix. By EDS spectrum and EPMA analysis, it can be seen in ZChSnSb11-6 in the process of the brazing alloy and steel matrix are mainly Fe and Sn element migration, Cu in transition layer organization has obvious enrichment phenomenon. Using X-ray diffraction (XRD) analysis, can see using CuCl2 solution to deal with the phase transition layer organization the specimen by Sn and Sb, Cu2Fe3, FeSb2 and Cu3Sn, create new Cu2Fe3, FeSb2 and Cu3Sn phase; ZChSnSb11-6 alloy and steel matrix joint tensile test results show that the fracture strength with the increase of brazing temperature increases after the first decreases, and reached the maximum at 320 ℃,145 MPa, respectively.Use of NiCl2 solution processing method, the sample, at 280℃ soldering temperature ZChSnSb11-6 alloy and steel matrix was formed between the obvious welding transition layer, and there are no obvious weld area and lack of penetration, with the increase of brazing temperature transition layer organization grew up. By EDS spectrum and EPMA analysis, it can be seen in ZChSnSb11-6 in the process of the brazing alloy and steel substrates are mainly Fe and Sn element migration, Cu in transition layer organization has obvious enrichment phenomenon, in the transition layer Ni element content increased significantly. Using X-ray diffraction (XRD) analysis, can see use NiCl2 solution to deal with the phase transition layer organization the specimen by Sn and Sb, Ni4Sn, Ni3Sb2, Cu3Sn and Cu2Ni3Sn3, produced in the process of brazing Cu2Fe3, Ni4Sn, Cu3Sn, Ni4Sn and Cu2Ni3Sn3 phase; ZChSnSb11-6 alloy and steel matrix of weld tensile test results show that the fracture strength with the increase of brazing temperature increases after the first decreases, and reached the maximum at 320 ℃, the maximum fracture strength 153 MPa.ZChSnSb11-6 alloy transition layer and steel matrix microhardness increased with the brazing temperature, to increase after the first decreases, and peaked at 320 ℃, which NiCl2 and CuCl2 solution treated ZChSnSb11-6 alloy transition layer microhardness is higher than the surface physical treatment ZChSnSb11-6 microhardness of the alloy; Under the same pressure, the surface roughness of specimens of transitional layer microhardness is larger; The same kind of surface roughness, different pressure brazing sample transition layer microhardness disparity is not obvious. Transition from ZChSnSb11-6 alloy and steel matrix microstructure, microhardness, fracture strength, factors comprehensively, the excellent performance of the samples with NiCl2 solution treatment.