共查询到20条相似文献,搜索用时 140 毫秒
1.
2.
3.
4.
本文着重讨论钢质管道液态环氧内防腐(减阻)涂层成型过程中出现的一些常见缺陷,并进行分析总结,来提高内涂层最终的质量。 相似文献
5.
6.
大管径输水管道外防腐质量影响着管道的运行可靠性和寿命,本文讨论了不同的防腐工艺,并对防腐质量管理的重要性进行了简要论述。认为3层PE和单层环氧粉末(FBE)防腐是大管径输水钢质管道外防腐最佳选择。 相似文献
7.
浅谈埋地钢质管道阴极保护对熔结环氧粉末涂层的影响 总被引:1,自引:0,他引:1
阴极保护和防腐层的联合应用是埋地钢质管道防腐蚀普遍采用的技术,已在国内数万公里管道上应用,取得了显著效果。文章介绍了阴极保护的参数,通过对实例研究分析,着重阐述了阴极保护对熔结环氧粉末涂层的影响。 相似文献
8.
9.
本文就新修订的SY/T0315—2005《钢质管道单层熔结环氧粉末外涂层技术规范》进行了探讨,以期大家更好的理解和使用好新的技术规范。 相似文献
10.
一、引言钢质管道由于腐蚀缩短使用寿命或丧失使用价值,甚至造成恶性事故所带来的损失是巨大的。对于埋地钢质管道的防腐措施,目前大多数采用有机材料制备防腐绝缘层。自五十年代以来至今陆续研制出聚乙烯胶结带、熔解聚乙烯防腐层、环氧粉末涂层及防腐保温泡沫外包黄、... 相似文献
11.
12.
随着我国经济的稳定增长,进一步推动了各个行业领域的发展进程,其中以建筑行业的发展最为迅速,建筑行业的蓬勃发展为钢制管道的应用打下了基础,越来越多的钢制管道被应用于各个行业领域。从现实情况来看,在钢制管道施工过程中应用3PE防腐技术还存在一定的问题,影响了钢制管道的整体稳定性,基于此,本文就对钢制管道3PE防腐技术在施工中的应用进行了一个较为详细的概述。 相似文献
13.
14.
15.
16.
在对X100高强度管线钢化学成分、力学性能分析的基础上,结合选定的焊接工艺方案,对该管线钢环焊缝焊接接头的强度、冲击韧性、硬度、断裂韧性(CTOD)和抗氢致开裂(HIC)等性能进行试验分析。结果表明,X100高强度管线用钢具有良好的焊接性能,焊接接头的各项性能指标均满足管道运行安全要求,所选用的焊接材料、焊接方法和工艺参数可用于该管材的现场焊接。 相似文献
17.
18.
《Science & Technology of Welding & Joining》2013,18(7):622-630
AbstractAPI X80 pipeline steel is widely used in natural gas and oil transportation. In this study, X80 pipeline steels with 18.4?mm thickness and 1219?mm diameter, made in China, were welded by a combined girth welding technology. Experimental results showed that microstructures in weld metal and coarse grain heat affected zone are mainly composed of coarsening bainite grains with dimensions of 20–50?μm, and Vickers hardness in weld seam is lowered by the seven-pass welding process. Simulated results illustrated that repeatedly thermal cycles imposed by the combined multipass girth welding process easily result in softened weld joints. The predicted microstructures, phase compositions and hardness in weld metal are in agreement with the measured ones. The results could be applied to optimise this combined girth welding process and improve the weld quality of API X80 pipeline steel and even higher grade pipeline steels. 相似文献
19.
The present work describes the application of High-Velocity oxy-fuel spray process with Ni-20Cr2O3 powder deposition on the various pipeline steels namely SS 202, SS 304, and mild steel. The slurry erosion wear tests were performed on coated and uncoated steels by considering slurry concentration, impact velocity, and erosion time as input parameters. It was concluded that for all materials, rpm (impact velocity of erodent's) influences on erosion wear the most. It was also noticed that the erosion resistance has been improved with SS 202 steel followed by to SS 304 and mild steel. Further, Ni-20Cr2O3 coatings showed maximum enhancement in slurry wear resistance of mild steel, followed by SS 304 steel and SS 202 steel. 相似文献