abercrombie ireland X80 steel pipe girth weld larg

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X80 steel pipe girth weld large deformation Study


FCAW weld tissue and AW M. A group element: fine grain N (FGHAZ) for the small ferrite. In the heat affected zone is not hard and brittle martensite found in thick tissue. Thus two kinds of welding heat-affected zone has good fracture toughness. 3 Conclusions (1) for large deformation ring welds in X80 using E9010G root welding electrodes, E71T8. K-cored wire filled with self-protection to cover up and use E9010. Hot root pass welding electrode G, El0018. G to cover up two kinds of electrodes filled with welding welding,tory burch outlet, and the results are satisfied APIStd. 1104 standard. (2) group with a low self-cored welding seam of high hardness values ​​than the group with the electrode manual arc welding of weld hardness value is small, the former power and CTOD of weld shock value than the latter, thus weld hydrogen-induced cracking and stress corrosion cracking susceptibility decreased fracture toughness. (3) the use of E9010. G root welding electrode, E71T8-K-cored wire filled with self-protection to cover up the weld to PF + P, using E9010. Hot root pass welding electrode G, El0018. G electrode surface of the weld fill cover for the PF + IAF + P; X80 docking ring to the weld heat affected zone of martensite is not thick, heat-affected zone with good fracture toughness. References: [1] Li Helin. Natural gas transmission pipe several hot issues in the study [J]. China Mechanical Engineering,abercrombie ireland, 2001,p90x workout schedule,12 (13) :349-352. [2] Xionglin Yu, Duze Yu, Jin Lihong, et al. High-strength X80 pipes welding [J]. Petroleum Engineering Construction, 2O04, 32 (2): 3l-34. [3] Xue Xiaohuai, Yang Shufang, Wu Luhai,tory burch outlet, et al. Research progress of X80 pipeline steel [J]. Shanghai metals. 2004, 26 (2) :45-49. [4] Lu Tao, Zhao Haiyan, SHI Yao-wu. Residual stress of welded joints CTOD design curve of the shadow * JES1. China Mechanical Engineering. 2002,13 (5): 4371. [5] Lei Yongping, Zhang Qing, SHI Yao-wu, et al. Hot zone of welded joints containing paired CTOD impact strength [J]. Nuclear Power Engineering, 2002,23 (3): 4O_44. [6] Yangxin Qi, Wang Su. Li Wei, et al. Large-scale offshore oil platform CTOD testing of welded joints [J]. Welding Journal, 2002,23 (4) :48-52. [7] Zhuangchuan Jing, Yun-Long Li, Yao-Rong Feng, et al. High Strength Pipeline Girth Weld strength matching performance of the pipeline [JJ. Physical and chemical testing a physical volumes, 2004,40 (8) :383-386. [8] Zhang Min, Yao Chengwu, Niebin Ying. XS0 pipeline SAW joint performance analysis fJ]. Welding Journal, 2005,26 (9) :19-26. Field (on the next page 14) hairy morphology. Further be seen from the TEM powder is composed of two different phases. Combined with X-ray shows. Two-phase respectively, TiN, AIN, and the close combination of the two-phase, no significant phase boundary, but also shows the composite ceramics are scattered photographs (Figure 3b) there are no obvious reasons for the distribution of phase boundaries. 3 Conclusions (1) composite ceramics mainly by the two-phase composition of TiN and AlN, and contains very small amounts of A1Ti phase, homogeneous single. (2) composite ceramics with particles of the poor. There are more macro-defects, but the composite ceramics have 1179.21HV hardness, which shows excellent performance TiN/A1N composite ceramics (3) composite ceramics with no obvious boundary. That the compatibility of TiN and A1N better. (4) composite ceramics have similar feather morphology. References: [1] KoehlerJs. Attempttodesignastrongsolid [J]. Play. Rev. B, 1970, (2) :547-551. [2] Shi Yulong, Peng Hongrui, Shi straight, and so on. High-speed steel surface physical and chemical vapor deposition TiNJ]. Heat Treatment of Metals, 1997. (11) :22-23, [3] Cheng Aerospace. Overview of the use of tool coating materials [J]. Materials Review, 1998,12 (6): 45_47, [4] KonbayashiAkira, FormationofTiNcoatingygastunneltypeplasmareactives praying [J] _Surface & CoatingsTechnology, 2000,132:152.157. Field 18 More articles related to topics：


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