理化检验-物理分册2016，Vol.52Issue(2)：112-113,2.DOI:10.11973/lhjy-wl201602009
制样因素对X70管线钢规定总延伸强度Rt0.5的影响
Effects of Sample Preparation Factors on Proof Total Extension Strength Rt0.5 of X70 Pipeline Steels
张群芳 1侯永亮 1谷峰1
作者信息
- 1. 首钢京唐钢铁联合有限责任公司 质检监督部,唐山 063200
- 折叠
摘要
Abstract
The proof total extension strength Rt0.5 is one of the most important mechanical properties of pipeline steels,and it is also necessary to ensure the safe operation of pipelines.Through comparing the tensile test results of X70 pipeline steel samples with different sampling direction and flattening degree,the effects of sample preparation factors on Rt0.5 test results were analyzed.The results show that the measured Rt0.5 of longitudinal direction samples was largest,so sampling direction must be indicated in the product supply agreement.The incomplete flattening of tensile samples would cause Rt0.5 test results fluctuation.In order to guarantee the accuracy of Rt0.5 test results,the tensile samples must be flattened completely before test.关键词
X70管线钢/规定总延伸强度Rt0.5/制样因素/取样方向/试样压平Key words
X70 pipeline steel/proof total extension strength Rt0.5/sample preparation factor/sampling direction/sample flattening分类
矿业与冶金引用本文复制引用
张群芳,侯永亮,谷峰..制样因素对X70管线钢规定总延伸强度Rt0.5的影响[J].理化检验-物理分册,2016,52(2):112-113,2.
