退火工艺对冷凝器用白铜管组织和性能的影响  

Effect of Annealing Process on Microstructures and Properties of White Copper Condenser Tubes

作　　者：邓楚平[1,2] 黄伯云[1] 潘志勇[1,2] 李卫 李宏英 

机构地区：[1]中南大学粉末冶金研究院 [2]长沙铜铝材有限公司研发中心,湖南长沙410014 [3]长沙铜铝材有限公司研发中心

出　　处：《金属热处理》2006年第11期57-60,共4页Heat Treatment of Metals

摘　　要：采用拉伸性能测试、扫描金相-微区成分分析和X射线衍射物相分析方法,研究了退火工艺对冷凝器用白铜管组织和性能的影响。结果表明,随着退火温度升高,冷凝管内部形变组织逐渐消失;退火温度愈高,形变组织消失得愈快,而晶粒有所长大;同时,白铜管强度降低,塑性增加。适宜的退火工艺是在连续光亮退火炉内施行720℃保温,连续推进速度V=260mm/min。在此条件下,合金的抗拉强度≥370MPa,伸长率≥25%,扩口和压扁性能都合格,白铜管的耐腐蚀性能也比较好。Effect of annealing process on microstructures and properties of white copper condenser tubes was researched by tensile test, scanning electron microscopy-energy spectrum and X-ray diffraction-phase analysis. The results show that the deformation structures gradually disappear with increasing annealing temperature. The higher the annealing temperature is, the faster the disappearing rate of the deformation structures is, but the grain size also increases. At the same time,the tensile strength decreases and the elongation increases. A appropriate annealing process for the white copper condenser tubes is the furnace inner annealing at 720 ℃ with the conveyer belt moving velocity of V=260 mm/min. In this condition,the tensile strength and the elongation of white copper condenser tubes can reach to 370 MPa and 25% respectively, the anti-corrosion characteristic of the tubes is also preferable.

关 键 词：白铜冷凝管 显微组织 力学性能 耐腐蚀性 

分 类 号：TG146.11[一般工业技术—材料科学与工程]