红外加热辅助激光透射焊接异种聚合物
|
摘要
异种相容聚合物因温度属性差异导致焊接效果不佳,为提高其激光透射焊接强度,采用了在激光透射焊接时辅助使用红外加热灯加热具有较高熔融温度的上层材料而改善焊接强度的新方法。从光学属性、温度属性、相容性和上层材料吸热测试4个方面对可焊性进行了理论和实验分析;采用响应面法进行工艺参量优化,取得了最佳工艺参量组合;使用3维显微镜研究了焊件断面形貌及失效形式,并分析了焊缝处气泡对焊接性能的影响。结果表明,使用红外加热灯辅助焊接的最大剪切力能达到激光直接透射焊接时的1.5倍左右。红外加热灯的辅助加热作用是有效解决异种聚合物因温度属性差异大而导致焊接效果不理想问题的一种新途径。
The welding effect of heterogeneous compatible polymers was poor due to the difference of temperature properties. In order to improve the laser transmission welding strength, laser transmission welding assisted by infrared heating lamp to heate superstructure material with high melting temperature was used. The welding ability was analyzed theoretically and experimentally from four aspects: optical property, temperature property, compatibility and heat absorption test of upper layer material. Response surface methodology was used to optimize process parameters and the optimum combination of process parameters was obtained. A 3-D microscope was used to study the fracture morphology and failure modes of weldments. The effect of air bubbles on the welding ability was also analyzed. The results show that the maximum shear force of the welding with infrared heating lamp can reach about 1.5 times of that without infrared heating lamp. The assistance of infrared heating lamp can effectively solve the problem that the welding effect of heterogeneous polymers is not ideal because ofgreat difference of temperature attributes.
The welding effect of heterogeneous compatible polymers was poor due to the difference of temperature properties. In order to improve the laser transmission welding strength, laser transmission welding assisted by infrared heating lamp to heate superstructure material with high melting temperature was used. The welding ability was analyzed theoretically and experimentally from four aspects: optical property, temperature property, compatibility and heat absorption test of upper layer material. Response surface methodology was used to optimize process parameters and the optimum combination of process parameters was obtained. A 3-D microscope was used to study the fracture morphology and failure modes of weldments. The effect of air bubbles on the welding ability was also analyzed. The results show that the maximum shear force of the welding with infrared heating lamp can reach about 1.5 times of that without infrared heating lamp. The assistance of infrared heating lamp can effectively solve the problem that the welding effect of heterogeneous polymers is not ideal because ofgreat difference of temperature attributes.
引文
[1] AMANAT N,CHAMINADE C,GRACE J,et al.Transmission laser welding of amorphous and semi-crystalline poly-ether-ether-ketone for applications in the medical device industry[J].Materials & Design,2010,31(10):4823-4830.
[2] ZHU Z G.Introduction and market application of engineering plastics in automotive[J].Rubber & Plastics Resources Utilization,2010(1):16-23 (in Chinese).
[3] LIU H H,SU G Sh,WANG Ch Y,et al.Simulation and analysis of temperature field of laser transmission welding polycarbonate[J].Welding Technology,2017,46(7):4-7 (in Chinese).
[4] YANG K,WANG X,ZHANG H Zh,et al.Influence of additive on welding quality of laser transmission welding plastics[J].Laser Technology,2009,33(3):246-248 (in Chinese).
[5] ZHANG H Zh,DING G M,JI J Q,et al.Fixture design of laser transmission welding plastics[J].Welding Technology,2007,36(5):37-39 (in Chinese).
[6] JUHL T B,JENSEN E A.Investigation on high strength laser welds of poly-propylene and high-density polyethy-lene[J].Journal of Applied Polymer Science,2013,129(5):2679-2685.
[7] KIM D,JEON I,PARK H,et al.Modification of polypropylene for improving the laser transmission weldability to polycarbonate [J].Po-lymer-Korea,2013,37(6):753-763.
[8] JIANG H R,LIU H X,CHEN G Ch,et al.Study on the process of laser transmission welding between the modified polypropylene and nylon 66[J].Acta Optica Sinica,2015,35(s2):s216002(in Ch-inese).
[9] LIU H X,JIANG H R,GUO D H,et al.Study on welding mechanism based on modification of polypropylene for improving the laser transmission weldability to PA66[J].Materials,2015,8(8):4961-4977.
[10] LIU H,JIANG H,CHEN G,et al.Investigation on the laser transmis-sionweldability and mechanism of the graft-modified polyethylene and PA66[J].International Journal of Advanced Manufacturing Technology,2015,86(1):1-8.
[11] SONG W H,GU W,ZHOU J X,et al.Optimum design of temperature uniformity based on infrared lamp array heating[J].Computer Simulation,2017,34(10):429-434(in Chinese).
[12] WU Y W,LIU H X,LI P,et al.Experimental study of laser transmi-ssion welding between Polycarbonatee and polyphenylene oxide[J].Chinese Journal of Lasers,2015,42(5):0503010(in Chinese).
[13] LIU F C,LIAO J,NAKATA K.Joining of metal to plastic using friction lap welding[J].Materials & Design,2014,54:236-244.
[14] BRAUN E,LEVIN B C.Polyesters:a review of the literature on products of combustion and toxicity[J].Fire & Materials,1986,10(3/4):107-123.
[15] SEKOU S,CHEN Sh G.A plastic composite laser welding system:CN104552921A [P].2015-04-29 (in Chinese).
[16] ARAI S,KAWAHITO Y,KATAYAMA S.Effect of surface modification on laser direct joining of cyclic olefin polymer and stainless steel[J].Materials & Design,2014,59:448-453.
[2] ZHU Z G.Introduction and market application of engineering plastics in automotive[J].Rubber & Plastics Resources Utilization,2010(1):16-23 (in Chinese).
[3] LIU H H,SU G Sh,WANG Ch Y,et al.Simulation and analysis of temperature field of laser transmission welding polycarbonate[J].Welding Technology,2017,46(7):4-7 (in Chinese).
[4] YANG K,WANG X,ZHANG H Zh,et al.Influence of additive on welding quality of laser transmission welding plastics[J].Laser Technology,2009,33(3):246-248 (in Chinese).
[5] ZHANG H Zh,DING G M,JI J Q,et al.Fixture design of laser transmission welding plastics[J].Welding Technology,2007,36(5):37-39 (in Chinese).
[6] JUHL T B,JENSEN E A.Investigation on high strength laser welds of poly-propylene and high-density polyethy-lene[J].Journal of Applied Polymer Science,2013,129(5):2679-2685.
[7] KIM D,JEON I,PARK H,et al.Modification of polypropylene for improving the laser transmission weldability to polycarbonate [J].Po-lymer-Korea,2013,37(6):753-763.
[8] JIANG H R,LIU H X,CHEN G Ch,et al.Study on the process of laser transmission welding between the modified polypropylene and nylon 66[J].Acta Optica Sinica,2015,35(s2):s216002(in Ch-inese).
[9] LIU H X,JIANG H R,GUO D H,et al.Study on welding mechanism based on modification of polypropylene for improving the laser transmission weldability to PA66[J].Materials,2015,8(8):4961-4977.
[10] LIU H,JIANG H,CHEN G,et al.Investigation on the laser transmis-sionweldability and mechanism of the graft-modified polyethylene and PA66[J].International Journal of Advanced Manufacturing Technology,2015,86(1):1-8.
[11] SONG W H,GU W,ZHOU J X,et al.Optimum design of temperature uniformity based on infrared lamp array heating[J].Computer Simulation,2017,34(10):429-434(in Chinese).
[12] WU Y W,LIU H X,LI P,et al.Experimental study of laser transmi-ssion welding between Polycarbonatee and polyphenylene oxide[J].Chinese Journal of Lasers,2015,42(5):0503010(in Chinese).
[13] LIU F C,LIAO J,NAKATA K.Joining of metal to plastic using friction lap welding[J].Materials & Design,2014,54:236-244.
[14] BRAUN E,LEVIN B C.Polyesters:a review of the literature on products of combustion and toxicity[J].Fire & Materials,1986,10(3/4):107-123.
[15] SEKOU S,CHEN Sh G.A plastic composite laser welding system:CN104552921A [P].2015-04-29 (in Chinese).
[16] ARAI S,KAWAHITO Y,KATAYAMA S.Effect of surface modification on laser direct joining of cyclic olefin polymer and stainless steel[J].Materials & Design,2014,59:448-453.