基于红外焊接的氢燃料电堆分配歧管爆破强度分析  

Explosion Strength Analysis of Distribution Manifold of Hydrogen Fuel Reactor Based on Infrared Welding

作　　者：王欢 李新奇 李俊伟[2] 周鸯銮 李树峰[2] WANG Huan;LI Xinqi;LI Junwei;ZHOU Yangluan;LI Shufeng(Shentong Technology Group of Limited Company,Yuyao 315400,China;School of Mechanical and Electrical Engineering,Shihezi University,Shihezi 832000,China)

机构地区：[1]神通科技集团股份有限公司,浙江余姚315400 [2]石河子大学机械电气工程学院,新疆维吾尔自治区石河子832000

出　　处：《汽车实用技术》2023年第23期155-160,共6页Automobile Applied Technology

基　　金：浙江省余姚市科技创新项目(20211YYSZDYF020008)。

摘　　要：现存分配歧管普遍采用螺栓连接固定,存在清洁度不高、连接强度低、耐久性较差以及生产成本高的问题。课题组提出红外焊接PPS-GF404020T材料研制流体分配歧管的方法来改进连接方式,对由聚苯硫醚(PPS)树脂制成的分配歧管的红外焊接性能进行研究,分析这种新型分配歧管的连接强度;采用红外焊接进行试验,由全自动计算机控制爆破试验台测定连接爆破强度,根据实际生产的产品进行测试,优化焊接工艺参数,寻找最优焊接效果。结果表明,在红外功率16 kW、焊接加热时间40 s、加热距离3 mm、焊接固化时间20 s、焊接深度1.5 mm、夹紧力920 N时,获得最佳的焊接强度,分配歧管内部可以承受8 bar压强。当分配歧管吸收的红外能量不同时,焊接筋的熔融结合作用程度和焊接缺陷(烧灼、气泡和碳化)是影响接头力学性能和失效形式的主要因素。The existing distribution manifold is generally fixed by bolted connection,which has the problems of low cleanliness,low connection strength,poor durability and high production cost.The research group proposed the method of infrared welding PPS-GF404020T material to develop fluid distribution manifold to improve the connection mode:The infrared welding performance of the distribution manifold made of polyphenylene sulfide(PPS)is studied,and the connection strength of the new distribution manifold is analyzed.Using infrared welding test,by the automatic computer controlled blasting test bench to determine the connection blasting strength,according to the actual production of products to test,optimize the welding process parameters,to find the best welding effect.The results show that the optimal welding strength can be obtained when infrared power is 20 kW,welding heating time is 40 s,heating distance is 3 mm,welding curing time is 20 s,welding depth is 1.5mm and clamping force is 920 N.The pressure inside the distribution manifold can withstand 8 bar.When the infrared energy absorbed by the distributed manifold is different,the degree of fusion bonding and welding defects(cauterization,bubble and carbonization)of welded bars are the main factors affecting the mechanical properties and failure forms of joints.

关 键 词：红外焊接 高强度 轻量化 氢燃料电池 分配歧管 

分 类 号：TK91[动力工程及工程热物理]