采用针状铁素体的管线钢具有较好的成形性能。
Pipeline steel adopting the spicular ferrite owns the better properties of forming.
韧性是管线钢最重要的性能之一。
Toughness is one of important properties for pipeline steel.
还简述了X80管线钢对焊接的特殊要求。
The special requirement for the welding of X80 pipeline steel was described also.
焊接性能是衡量管线钢性能的一项重要指标。
Welding property is an important index to weigh the property of pipeline steel.
它可作为X80管线钢埋弧焊的推荐焊接规范。
It can be used as welding criterion of X80 pipeline steel submerged-arc welding.
分析了X80级管线钢应用中应关注的几个问题。
It analyses the few attention issues applied in grade X80 pipeline steel.
同时探索出一种新的管线钢原奥氏体晶界腐蚀方法。
A new method for showing the prior austenite crystal boundary corrosion, of pipeline steel has been also supposed.
研究结果对X70管线钢的安全设计具有重要意义。
The results are significant to safety design for X70 line pipe.
研究了X80级管线钢焊接热影响区不同区域的韧性分布。
Toughness distributions of different area on HAZ of grade X80 pipeline steel have been studied.
可为生产高洁净度管线钢的工艺选择和成分控制提供参考。
It also provides reference for the process choice and content control of high cleaness pipeline production.
研究了具有不同微观组织类型的高强度管线钢的夏比冲击韧性。
The Charpy impact properties of high strength pipeline steel with different microstructure were investigated.
研究了焊剂碱度对管线钢埋弧焊熔敷金属显微组织和韧性的影响。
The effect of flux basicity on the microstructures and toughness of SAW deposited metals on pipe line was investigated.
在过去几十年X 70级管线钢的典型组织一直是铁素体-珠光体。
In the past decades of years the typical structure of pipeline steel X70 was the ferrite-pearlite.
通过拉伸试验，分析了预拉伸变形对X60管线钢拉伸性能的影响。
The influence of per-tension deformation to the tensional function of X60 pipeline steel is investigated by tension experiment.
分析管线钢l 360 MB落锤不合格的原因，提出生产改进措施。
Improving measures are put forward through cause analysis on unqualified DWTT of L360MB pipeline steel.
简单介绍邯钢开发的X70管线钢的性能以及在质量方面存在的问题。
This paper briefly introduces properties and some quality problems of X70 pipeline steel developed by Handan steel.
针对不同强度级别的管线钢x 70和L245对接的焊接工艺进行了研究。
A study was made of the welding procedure for X70-L245 butt joint of pipeline steel.
用光滑试样慢应变速率拉伸法研究了X60管线钢在含水土壤中的应力腐蚀。
Stress corrosion cracking of an X60 pipeline steel in soil containing water has been investigated using slow strain rate test.
简要介绍了宝钢试制的以针状铁素体组织为特征的X80级管线钢热轧板卷。
It represents the trial manufacture of grade X80 pipelines steel hot rolled coil with characteristic of acicular ferrite at BaoSteel Mill.
采用示波冲击试验方法研究了具有不同微观组织高强度管线钢的夏比冲击性能。
The Charpy impact properties of high strength pipeline steel with different microstructures have been studied through a series of the instrumented impact tests.
通过对管线钢焊接粗晶区韧性影响因素的分析，提出了管线钢粗晶区的韧化方向。
Through the analysis of elements affecting the rough crystal zone in pipeline steel weld, it raises the flexing direction of rough crystal zone of pipeline steel.
采用有限元法对低匹配条件下x 80钢级管线钢焊接接头的变形能力进行了研究。
The deformability of under-matched X80 grade pipeline steel welding joint was studied through Finite Element Method.
应用拉伸试验和慢拉伸试验，研究X70管线钢电化学充氢后材料拉伸性能的变化。
Tensile tests and slow strain rate tests (SSRT) are used to investigate the mechanical behaviors of X70 pipeline steel after electrochemical hydrogen charging.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated.
系统总结了管线钢合金设计的基本思想，力求为研制综合性能更佳的管线钢指明方向。
This paper systematically summarizes the basic design idea aiming at developing the pipeline steel with better comprehensive properties.
采用热模拟技术研究了X80管线钢在不同焊接热循环条件下晶粒及第二相粒子的变化。
Thermal simulating technology was adopted to study grain size and the precipitates distribution of CGHAZ for X80 pipeline steel with different welding condition.
结果表明，X80级管线钢在焊接过程中形成的热影响区由不同温度下形成的梯度组织组成。
The results indicate that HAZ produced during welding of grade X80 steel is made up of grads structure under different temperature.
结果表明，此浸蚀剂是管线钢一种理想的奥氏体晶界浸蚀剂，所采用的测定方法的精确度较高。
The results shows that the corrosion is an ideal austenite crystal boundary corrosion for pipe line steel. The accuracy of adopted determination method is high.
初步研究发现，对由连铸然后经控制轧制生产的管线钢层状撕裂几乎总是沿中心线偏析带发生。
It is found that the 'delamination always takes place along the centerline segregation band in pipe-line steel produced by continuous casting and then controlled rolling.
由于介质和材料的特殊性，人们对海泥的腐蚀性和管线钢在其中的腐蚀行为了解得还不太深入和系统。
Because of the particularity of the medium and material, our knowledge of corrosivity of sea mud and behavior of pipeline steel exposed in it is not enough.
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