水雾化淬火对35CrMnSiA薄钢板的影响  

Effect of water atomization quenching on thin steel sheet 35CrMnSiA

作　　者：范志洋 李贤君 刘俊杰 胡博 周彤 郝媛 Fan Zhiyang;Li Xianjun;Liu Junjie;Hu Bo;Zhou Tong;Hao Yuan(Beijing Research Institute of Mechanical and Electrical Technology Ltd.,Beijing 100083,China)

机构地区：[1]北京机电研究所有限公司,北京100083

出　　处：《金属热处理》2021年第5期267-271,共5页Heat Treatment of Metals

基　　金：2018年绿色制造系统集成项目-先进涡轮发动机热端部件绿色关键工艺系统集成。

摘　　要：设计了一套水雾化喷淬试验装置研究了立置状态下35CrMnSiA薄钢板在喷淬过程中不同位置的降温变化曲线,还使用DEFORM软件中的Inverse Heat Transfer模块对试验钢板表面的综合换热系数进行了求解。结果表明,当试验钢板在喷口尺寸为5 mm,喷口到表面距离为300 mm,喷口压力分别为0.1、0.2和0.3 MPa的条件下,在450℃以上的高温段和200℃以下的低温段,钢板的表面换热系数较低,而在中温段可获得较高的表面换热系数。相对于0.1 MPa的喷口压力,0.2 MPa的喷口压力下试验钢板的冷却能力有着明显的提高,而继续增加喷口压力至0.3 MPa,冷却能力提升却不明显。A set of experimental equipment for atomized water spray quenching was designed to study change of the temperature drop curves of thin steel sheet 35CrMnSiA under the vertical state during spray quenching,and by using Inverse Heat Transfer module in the DEFORM software to complete the solution of the comprehensive heat transfer coefficient on the tested steel sheet.The results show that,when the tested steel sheet meets as-follow conditions,with the nozzle size of 5 mm,distance from nozzle to the sheet surface is 300 mm,and the nozzle pressure is 0.1,0.2 and 0.3 MPa respectively,the surface heat transfer coefficient of that is correspondingly lower in the high temperature zone above 450℃and the low temperature zone below 200℃.But the tested steel sheet can obtain a higher surface heat transfer coefficient in the middle temperature zone.Compared with the nozzle pressure of 0.1 MPa,the tested steel sheet of that has a significant improvement under the nozzle pressure of 0.2 MPa.While increasing the nozzle pressure to 0.3 MPa,the cooling capacity has little improvement.

关 键 词：水雾化淬火 35CrMnSiA薄钢板 反传热 换热系数 

分 类 号：TG156.3[金属学及工艺—热处理]