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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68159 2007 年 04 月 23 日 20:42 Reading (loading. ..) Comments (8) Category: MSN-doodles Tokyo, N should be a good many reasons to visit here next.
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22122277 2008 年 05 月 29 日 16:50 Reading (loading. ..) Comments (0) Category: Personal Diary
United States not a low-key, very calm, unemotional moves they already had:
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2, by high oil prices to Tuokua Chinese economy. China's rapid economic development requires a lot of crude oil into products, while Western countries continue to increase oil reserves, resulting in high oil prices continued to increase the cost of China's economic construction. That is why the U.S. fight in Iraq, to fight Iran's reasons: control of oil is to control the economic lifeline.
3, foot up China's financial bubble. Appreciation of the renminbi, a lot of hot money into China naturally, resulting in high costs in China, high-dollar economic bubble. Perhaps this is why the Government would be carrying the condemned are not the reasons to save the city, is to fight against international speculative capital in China, misappropriating malicious behavior, but on the other hand have to deal with tens of thousands of investors'd rather die reviled and may cause the risk of domestic social unrest. Now look, what events in Tibet, boycott the Olympics are something less than the channel.

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