As the CC and heating technologies were not changed,the influence was done over CC overheat temperature on the bearing steel GCr15 band structure adopting 2 spheroidized technology.It was found that the band structure grade of the spheroidized was the least which the test results were the grade 2.5,2.0,1.0 when the overheat temperature of CC was more than 30℃,the band structure grade of the spheroidized was the highest which the test results were the grade 3.5,3.0,2.5 when the overheat temperature of CC was between 22℃and 30℃and the band structure grade of the spheroidized was the second which the test results were the grade 3.5,2.5 when the overheat temperature of CC was less than 22℃.So the advice was put forward that the overheat temperature of CC was best controlled between 30℃and 40℃to production bearing steel GCr15 when the band structure grade was wanted for the smaller controlled.
关键词
GCr15轴承钢/连铸工艺/带状组织/过热度/球化退火态
Key words
GCr15 bearing Steel/cc technology/band structure/overheat temperature/spheroidized state
维普
万方数据