IPC2010-31014
INFLUENCES OF FINAL PIPE FORMING PROCESS BY ROLL BENDING METHOD ON THE MECHANICAL PROPERTIES OF SAW PIPES
轧辊弯曲终成形工艺对埋弧焊管力学性能的影响 Afshin Zandipoor Reza Shamloo SAFA Rolling and Pipe Mills Co. SAFA Rolling and Pipe Mills Co E-mail :info@safarolling.com E-mail: info@safarolling.com
ABSTRACT There are three main methods and process for forming pipes from plates "Roll Bending", "JCOE" and "UOE". In all of the above mentioned ways part of the pipe will remain flat, and can not achieve the desired curvature of the pipe. These areas are generally at the two longitudinal edges of the open seam pipes.For obviation of these flat areas at the longitudinal edges of the pipe, the pre forming machines for "JCOE" and "UOE"processes, and the post bending machine for "the Roll Bending" process are used. In the post bending machine the final shape of the pipes is determined based on the rate of the machine hoist pressure and the spaces between the rolling dies.These parameters can have various effects on the mechanical properties of the final welded pipes. In the research that has been conducted at SAFA Rolling & Pipe Mill Company, the amount of hoist pressure and the final shape of the open seam pipes in the post bending machine, and their influences on the mechanical properties of the welded pipes, have been investigated herein.
IPC2010-31021
EFFECT OF FRACTURE SPEED ON DUCTILE FRACTURE RESISTANCE – PART 2: RESULTS AND APPLICATION
断裂速率对延性断裂抗力的影响:第二部分-结论和应用 Do-Jun Shim and Gery Wilkowski TransCanada PipeLines Limited Engineering Mechanics Corporation of st Columbus 451- 1 Street, S.W. Calgary, AB, T2P 5H1 3518 Riverside Drive - Suite 202 Canada Columbus, OH 43221 U.S.A.
Da-Ming Duan and Joe Zhou
ABSTRACT One of the many aspects of natural gas pipeline design and material selection is the consideration of propagation and arrest of high-speed axial ductile fracture in the line pipes. Understanding the material ductile fracture behavior is essential for establishing an integrated fracture control plan. This is particularly important for pipelines of high design pressures utilizing large-diameter and high-grade line pipes. The procedure of Battelle Two-Curve Method (TCM) has been most commonly used in ductile fracture analysis in the prediction of fracture speed and minimum arrest toughness for

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