摘要
针对一种新研制的高速铁路弹条用钢,研究了温度、保温时间以及冷却方式对其氧化脱碳的影响,结果表明：在温度800～1100℃范围内,随温度的升高,氧化程度逐渐增大,大于1050℃急剧增大；总脱碳层增大,且速度越来越快,全脱碳层先增后减,在900℃达到最大.在保温时间20～120min范围内,随时间增加,氧化层深度增加,但与温度相比,其影响相对较小；脱碳层随保温时间的增加,厚度逐渐增大.在水冷、空冷、炉冷3种不同的冷速条件下,水冷的氧化脱碳最轻,空冷次之,炉冷最严重,即冷却速度越大,氧化脱碳程度越轻.
The effect of heating temperature, holding time and type of cooling on surface oxidation and decarburiza- tion of a newly developed spring steel for elastic bar of high speed railway was investigated in laboratory. The re- sults show that with the growth of heating temperature between 800 and 1100 ℃, the depth of oxidation layer in- creases gradually below 1050 ℃ then increases sharply; the depth of decarburization layer increased and the speed is more and more faster; the ferritic decarburized depth of the spring steel increases firstly, then decreases and when the temperature is 900 ℃, it reaches the maximum. With the growth of the holding time in the range of 20-- 120min, the depth of oxidation and decarburization layer increases gradually. Compared with temperature, the holding time has smaller effect on the depth of oxidation. On the conditions including water-cooled, air-cooled and furnace-cooled, the depth of oxidation and decarburization cooled in water is smallest, followed by cooled in air and cooled in furnace is the most serious condition. So the greater the cooling rate, the smaller the depth of oxida- tion and decarburization.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2013年第10期47-52,共6页
Journal of Iron and Steel Research
关键词
新型弹簧钢
温度
保温时间
冷却方式
氧化脱碳
new type spring steel
temperature
holding time
cooling method
oxidation and decarburization
