Transactions of Materials and Heat Treatment

Title：Laser cladding process for inclined thinwalled rotating parts

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ClassificationCode：TG142.1;TN249;TH142.2

year,vol(issue):pagenumber：2020,45(7):122-127

Abstract：

The laser cladding process of inclined thin-walled rotating parts was studied. Then, the laser cladding experiment of inclined thin-walled rotating part was conducted by the process parameter combination schemes of reducing the laser power in stages, and the inclined thin-walled rotating part with round-table was successfully fabricated in Q235 steel plate matrix. Furthermore, the influences of the dual effects for gravity of laser cladding molten pool and the thermal expansion and cool contraction on the formability of inclined thin-walled rotating parts were analyzed, the internal structure of inclined thin-walled rotating part with round-table was tested by optical metallography microscope, and the hardness of cross section for formed part was measured by Vickers hardness tester to plot the hardness curve. The results show that the internal microstructures of inclined thin-walled rotating part with round-table are mainly columnar and plane crystal, the structure is compact, and there are no defects such as pores, cracks and slag inclusions in the internal structure. Finally, the hardness inside of the formed part is uniform which is mainly 400-410 HV10, and the hardness near the top reaches 470 HV10 abruptly.

Funds：

烟台市重点研发计划（2018XSCC036）；山东省高等学校青创科技支持计划（2019KJB001）

张玉杰（1969-），女，硕士，副教授 E-mail：zyjyt_70@163.com

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