胶接技术在铝合金运动训练器材接头中的应用及性能研究  

Research on the application of bonding technology and the bonding properties of aluminum alloy adhesive joints for sports training equipment

作　　者：洪秀岩[1] HONG Xiuyan(Xi’an Eurasia University,Xi’an 710065,China)

机构地区：[1]西安欧亚学院,陕西西安710065

出　　处：《粘接》2023年第5期12-16,共5页Adhesion

摘　　要：为了提升运动训练器材用铝合金胶接接头的承载能力,研究了胶层厚度和搭接长度对5052+Er铝合金胶接接头胶接性能的影响,并对破坏机理进行了探讨。结果表明,胶层厚度从0.2 mm增至1.0 mm,不同搭接长度的胶接接头最大剪切载荷都呈现逐渐减小的趋势。在相同胶层厚度条件下,搭接长度越小则对应的最大剪切载荷也较小。在胶层厚度为0.2、0.3和0.5 mm时的临界搭接长度为30 mm;胶层厚度为1 mm时的临界搭接长度为40 mm。搭接长度低于临界搭接长度时,胶接接头的破坏模式主要为剪切破坏;当搭接长度在临界附近或超过临界长度时,胶接接头会先发生接头剥离直至破坏。随着搭接长度的增加,胶层厚度(t)分别为0.2、1 mm时,胶接接头参数C呈现逐渐增大的趋势,参数δ呈现逐渐减小的趋势。In order to improve the bearing capacity of aluminum alloy adhesive joints for sports training equipment,the influence of the thickness of the adhesive layer and the lap length on the bonding performance of 5052+Er alu⁃minum alloy adhesive joints was studied,and the failure mechanism was discussed.The results show that as the thickness of the adhesive layer increases from 0.2 mm to 1.0 mm,the maximum shear load of 5052+Er aluminum al⁃loy adhesive joints with different lap lengths shows a decreasing trend.With the same bondline thicknesses,the smaller the lap length of the+Er aluminum alloy glued joint,the smaller the corresponding maximum shear load.The critical lap length is 30mm at bondline thicknesses of 0.2,0.3 and 0.5 mm,and 40 mm at bondline thickness of 1.0 mm.When the lap length is lower than the critical lap length,the failure mode of the 5052+Er aluminum alloy adhesive joint is mainly shear failure;when the lap length is near or exceeds the critical lap length,the 5052+Er aluminum Alloy adhesive joints will first experience joint peeling until failure.With the increase of the lap length,the parameter C of the 5052+Er aluminum alloy adhesive joint,when the thickness t of the adhesive layer is 0.2 mm and 1.0 mm,shows a gradually increasing trend,and the parameterδshows a gradually decreasing trend.

关 键 词：胶接接头 胶层厚度 搭接长度 胶接性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TQ436.2[金属学及工艺—金属材料]