【摘要】：為探究連續(xù)油管瞬時(shí)液相擴(kuò)散焊管—管對(duì)焊接頭可靠連接的最佳焊接工藝參數(shù),采用雙溫工藝,FeNiCrSiB與BNi_2復(fù)合非晶箔作為中間層,用氬氣保護(hù)對(duì)連續(xù)油管CT80進(jìn)行瞬時(shí)液相擴(kuò)散連接,分析不同工藝參數(shù)對(duì)接頭顯微組織及降熔元素B、Si、Ni擴(kuò)散的影響規(guī)律,測試接頭的力學(xué)性能并觀察其斷口形貌。結(jié)果表明,焊接壓力為4.5MPa,雙溫工藝參數(shù)由1220℃保溫30s,迅速降到焊接溫度1190℃焊接90s,此時(shí)接頭綜合性能最佳,焊縫成分均勻,組織和母材相似,接頭抗拉強(qiáng)度最大,為625.6MPa。
[Abstract]:In order to investigate the best welding parameters of transient liquid phase diffusion welded tube-pipe butt welded joint of coiled tubing, double temperature process was adopted, FeNiCrSiB and BNi_2 composite amorphous foil was used as the interlayer, and argon gas protection was used for transient liquid phase diffusion bonding of coiled tubing CT80. The effect of different process parameters on the microstructure of the joint and the diffusion of the reduced-melting element BnSi-Ni was analyzed. The mechanical properties of the joint were measured and the fracture morphology of the joint was observed. The results show that the welding pressure is 4.5 MPA and the double temperature process parameters are reduced rapidly from 1220 鈩，

本文編號(hào)：2278470