焊接内螺纹铜管与拉拔内螺纹铜管性能对比
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摘要
对焊接内螺纹铜管与拉拔内螺纹铜管的主要区别进行阐述,分析2种工艺在原材料、成型方法、有无焊缝等方面的差别。结果表明,焊接内螺纹管的优点是换热效率高,管内残油含量较低,缺点是焊缝的存在增加了泄漏的风险,这是导致焊接内螺纹铜管被拉拔内螺纹铜管替代的重要原因。
The main differences between the welding inner-grooved copper tube and drawing inner-grooved copper tube are introduced.These two kinds of copper tubes are different at the aspects of raw material,shaping groove method,and seamed tube or seamless tube.The results show that the welding inner-grooved tube has higher heat exchange efficiency and lower oil content inside the tubes,but its leakage risk rises because of welding seam.Thus this is the main reason that the welding inner-grooved tubes are replaced by drawing inner-grooved copper tubes.
The main differences between the welding inner-grooved copper tube and drawing inner-grooved copper tube are introduced.These two kinds of copper tubes are different at the aspects of raw material,shaping groove method,and seamed tube or seamless tube.The results show that the welding inner-grooved tube has higher heat exchange efficiency and lower oil content inside the tubes,but its leakage risk rises because of welding seam.Thus this is the main reason that the welding inner-grooved tubes are replaced by drawing inner-grooved copper tubes.
引文
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[3]孙新春,孟兆勇,谷玉东,等.空调换热器内漏分析与判定[J].制冷与空调,2017,17(11):49-51.
[4]李红安,鲁长建,程大勇.制冷空调设备用新型耐蚁穴腐蚀铜管的研究[J].制冷与空调,2014,14(8):78-82.
[5]钟明生,汪浩,倪雪辉.铜管蚁巢腐蚀机制及其预防措施[J].制冷与空调,2013,13(11):70-72.
[6]李红安,王世中,鲁长建,等.制冷空调设备用铜管的发展趋势[J].制冷与空调,2014,14(12):13-16.
[7]刘景平.空调与制冷用高效节能内螺纹铜管高频焊工艺及应用研究[D].杭州:浙江大学,2005.
[8]潘志勇.内螺纹铜管拉拔成形法与焊接法工艺和技术比较[J].湖南有色金属,2004,20(1):26-28.
[9]李志强,郑双喜.国内外高效内螺纹焊接铜管现状及发展[J].焊管,2002,25(5):4-7.
[10]张士宏,刘劲松,程明,等.精密铜管铸扎加工技术[M].北京:国防工业出版社,2016:96-99.