TP2铜管室温超压强化技术  

TP2 COPPER TUBE OVERPRESSURE STRENGTHEN TECHNOLOGY AT ROOM TEMPERATURE

作　　者：杨帆[1] 刘小宁[1] 刘兵[1] 陈刚[1] 陈帆[1] 范有雄[1] 张红卫[1] YANG Fan;LIU XiaoNing;LIU Bing;CHEN Gang;CHEN Fan;FAN YouXiong;ZHANG HongWei(School of Mechanical Engineering,Wuhan Polytechnic College of Software and Engineering,Wuhan 430205,China)

机构地区：[1]武汉软件工程职业学院机械工程学院

出　　处：《机械强度》2019年第6期1351-1358,共8页Journal of Mechanical Strength

基　　金：湖北省教育厅科研项目(B2018473);武汉市黄鹤英才(教育)计划资助~~

摘　　要：为提高铜管的爆破压力,在保证安全的前提下节约铜材,对TP2铜管进行了室温超压强化试验,研究了预处理试验压力与铜管爆破压力的关系,分析了TP2材质抗拉强度的变化。基于28组TP2铜管在不同预处理压力的室温爆破试验,研究表明:(1)如果TP2铜管的强化处理压力等于其屈服压力,可改善铜管钎焊的热影响,铜管的爆破压力与TP2材质抗拉强度在一定程度上可得到强化。(2)与室温非超压强化相比,经过合适压力预处理的TP2铜管,可明显增大铜管爆破压力与TP2材质抗拉强度的均值,其标准差与变异系数显著减小,其精度得到明显提高;铜管爆破压力与材料抗拉强度的均值、标准差与变异系数波动范围变小,稳定性变好。In order to increase the burst pressure of copper pipe,save the copper material under the premise of guaranteeing safety,overpressure enhancement of TP2 copper tube was tested at room temperature,the relationship between the burst pressure of copper tube and the pretreatment pressures was studied,the changes of TP2 material tensile strength was analyzed.Based on28 groups burst test of TP2 copper tubes under different pretreatment pressure at room temperature,studies have shown that:(1)If the enhancement pretreatment pressure of TP2 copper tube is equal to the yield pressure,the thermal effect of copper tubes brazing should be improved,copper tube burst pressure and TP2 material tensile strength should be strengthened to a certain extent.(2)Compared with non overpressure enhancement at room temperature,for the burst pressure and the tensile strength of TP2 copper tube used appropriate pressure pretreatment,the means of copper tube burst pressure and the TP2 material tensile strength are increased significantly,the standard deviation and coefficient of variation are decreased significantly,and the precision is improved obvious.For the burst pressure and the tensile strength of TP2 copper tube,the fluctuation range of the average,standard deviation and coefficient of variation are smaller,and the stability is become well.

关 键 词：TP2 铜管 超压强化 爆破压力 抗拉强度 精度 稳定性 

分 类 号：TG146.1[一般工业技术—材料科学与工程] TH121[金属学及工艺—金属材料]