Microstructure engineering for high productivity welding of pipeline steels

管线钢高生产率焊接的显微组织工程

• 批准号: 418771-2011
• 负责人: Poole, WarrenJ
• 金额: $ 9.8万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=551583
• 关键词: Microstructure; engineering; productivity; welding; pipeline

There are currently a number of significant proposals for expansion of the North American oil and natural gas pipeline system including the Mackenzie Valley, the Alaska North Slope and Keystone XL pipelines. These projects will involve the use of new higher strength steels (X80 and X100) and new welding techniques (tandem and dual torch gas metal arc or laser hybrid) to lower construction costs. It is critical for the integrity of these pipeline systems that the welds have well understood mechanical behaviour. There are further challenges for northern pipelines due to the low temperatures and the probable melting of significant regions of permafrost. These considerations have led to new strain based design performance criteria.

目前有许多关于扩建北美石油和天然气管道系统的重要提案，包括麦肯齐山谷、阿拉斯加北坡和Keystone XL管道。这些项目将涉及使用新的高强度钢（X80和X100）和新的焊接技术（串联和双焊炬气体金属电弧或激光混合），以降低施工成本。对于这些管道系统的完整性来说，焊缝具有良好的机械性能至关重要。北方管道由于低温和可能融化的大量永久冻土区而面临进一步的挑战。这些考虑导致了新的基于应变的设计性能标准。