空调制冷用Φ5mm瘦齿大螺旋角内螺纹铜管旋压成形和管内换热性能  

Ball Spinning Forming Process and Heat Transfer Performance of Φ5 mm Inner-Grooved Copper Tube with Slimmer Tooth and Larger Helical Angle for Air Conditioning and Refrigeration

作　　者：曾延琦[1] 吴礼[1] 何强[1] 

机构地区：[1]江西铜业集团公司国家铜冶炼及加工工程技术研究中心,南昌330096

出　　处：《有色金属工程》2015年第1期18-21,26,共5页Nonferrous Metals Engineering

摘　　要：通过旋压成形模具优化设计、工艺试验、齿形参数观测和单管换热性能测试,研究Φ5 mm瘦齿大螺旋角内螺纹铜管旋压成形工艺和换热性能。结果表明,5球旋压工艺下,Φ5 mm×0.23 mm×0.12 mm,54条齿,12°齿顶角,27°螺旋角内螺纹铜管旋压成形的最佳旋模比为800-900。降低旋压成形过程中变形率利于获得较大螺旋角的内螺纹铜管。管内换热性能较同规格普通内螺纹铜管有明显提升,特别是冷凝换热系数平均提高17%,而压力损失仅略有增加。The ball spinning forming process and heat transfer performance of Φ5 mm inner-grooved copper tube with slimmer tooth and larger helical angle is investigated by optimized design of dies,process test,observation of tooth profile parameters and heat transfer performance test of single tube.The results show that the optimal rotation-pulling speed ratio for the forming of Φ5 mm × 0.23 mm × 0.12 mm inner-grooved copper tube with 54 teeth,12° addendum angle and 27° helical angle by the 5-ball spinning forming process is 800 to 900.Reducing the deformation rate of spinning forming process will be favorable to produce inner-grooved copper tube with larger helical angle.The trial Φ5 mm × 0.23 mm × 0.12 mm tube exhibits the superior heat transfer performance than the ordinary tube.Especially,the condensation heat transfer coefficient is increased with an average of 17%,while the pressure loss is increased slightly.

关 键 词：内螺纹铜管 瘦齿 大螺旋角 旋压成形 换热性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程]