流体机械钢管加工工艺研究  

Processing Technology of Fluid Machinery Steel Pipe

作　　者：戴红霞[1] 冯晓莉 

机构地区：[1]扬州工业职业技术学院机械与汽车工程学院,江苏扬州225009 [2]扬州大学动力工程学院,江苏扬州225127

出　　处：《铸造技术》2018年第1期157-159,共3页Foundry Technology

摘　　要：研究了拔制变形量和不同热处理条件对流体机械钢管力学性能和微观组织的影响,并对比分析了随炉冷却和空冷方式下钢管的断口形貌。结果表明,随着拔制变形量的增加,钢管的抗拉强度、屈服强度和显微硬度不断增加。随炉冷却方式下,随着热处理温度的升高,钢管的抗拉强度、屈服强度和硬度呈现先增加而后降低的趋势,在热处理温度为880℃时取得最大值。空冷方式下,随着热处理温度的升高,钢管的抗拉强度、屈服强度和硬度逐渐增加。相同热处理温度下,经过空冷后的钢管的抗拉强度、屈服强度和显微硬度明显更高,但是断后伸长率明显低于随炉冷却的钢管。The effect of deformation drawing and the different heat treatment on microstructure and mechanical properties of the fluid machinery steel pipe was studied, and the fracture morphology of the steel pipe with furnace cooling and air cooling mode was prepared. The results show that with the increase of drawing deformation, the tensile strength, yield strength and hardness of the steel tube increased, while the elongation decreases gradually. Under the furnace cooling mode, with the increase of heat treatment temperature, tensile strength, yield strength and hardness increase firstly and then decrease, the maximum value in the heat treatment temperature is 880℃. Under the air cooling mode, with the increase of heat treatment temperature, tensile strength, yield strength and hardness of steel increase gradually. In the same heat treatment temperature, the tensile strength, yield strength and microhardness are significantly higher with air cooling mode, but the elongation is significantly lower than that with the furnace cooling mode.

关 键 词：流体机械钢管 拔制变形量 热处理 力学性能 

分 类 号：TG243[金属学及工艺—铸造]