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| Application of the high speed drilling method of residual stress on thick wall pipeline steel pipe |
| LI Rong-feng1， XU Liang2， ZHANG Shu-yan 1，3 |
1.Center of Excellence for Advanced Materials，Dongguan 523808，China
2.Pabo Testing Technology Service Co.，Ltd.，Zhuhai 519050，China
3.Songshan Lake Laboratory for Material Science，Dongguan 523808，China |
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Abstract The high-speed drilling method（method A）of the standard GB/T 31310—2014 was used to determine the residual stress of JCOE SAWLwelded pipe with large wall thickness，small diameter-thickness ratio，high strength and hightoughness. The operation steps and precautions of the high-speed drilling method were introduced.The tested samples included steel plate sample，J-deformation sample，steel pipe sample before and after expansion. This method had been used to measure the residual stress of the thick wall pipeline with adepth of 1.4 mm to understand the distribution of residual stress along the surface depth. The test results showed that the residual stress state of steel pipe specimen after the mechanical expansion was well controlled，and the value was low，which was beneficial to the in-service stable operation of steel pipeline.
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Received: 31 July 2019
Published: 15 December 2019
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2019, Vol. 37 
