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- W2382572893 abstract "The product of cold heading steel wire made by Qst32-3 hot-rolled wire rod after cold forming has a rough surface,which affects product quality seriously.The cold heading steel wire is chemical composition and mechanical properties analyzed,it meets the requirement of EN 10263-2 standard.The microstructure of diameter 14 mm Qst32-3 hot-rolled wire rod and diameter 13.5 mm cold heading steel wire are examined,the microstructure of wire rod is ferrite and pearlite,ferrite grain size is 8.5,after pickling,drawing and spheroidizing annealing,the microstructure of cold heading steel wire is ferrite and spheroidization,the ferrite grain size in the center is 8 and surface local area is 1.The experiment and analysis show that the grain size of hot rolled wire rod will not change after spheroidizing annealing,part grain will grow after spheroidizing annealing while compression ratio is lower than 7%,grain size grows coarsely after spheroidizing annealing while compression ratio is 7%~26.5%,as the compression ratio increase,grain coarse causes surface rough,the small compression ratio before hot-rolled wire rod spheroidizing annealing is the reason of surface rough grain." @default.
- W2382572893 created "2016-06-24" @default.
- W2382572893 creator A5036619584 @default.
- W2382572893 date "2013-01-01" @default.
- W2382572893 modified "2023-09-23" @default.
- W2382572893 title "Surface roughness cause analysis of Qst32-3 cold heading steel wire for automobile" @default.
- W2382572893 hasPublicationYear "2013" @default.
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