Resistance to HIC of High Grade Pipeline Steels;
高强度管线钢的抗氢致裂纹性能
Through the corrosion dent pile weld test on line pipe,hardness and distance from weld fine crystal position to sample back is applied to predict HIC and arc burn.
通过对管线钢管腐蚀坑堆焊工艺试验,采用测量焊缝金相细晶区位置到试样背面的距离和硬度值,来预测是否有烧穿和氢致裂纹产生,从而选择合理的管道腐蚀坑堆焊工艺参数,并对管道腐蚀坑焊接补板的焊缝距离提出了技术要求。
The most frequently encountered defects in the process of wet underwater welding are the gas hole of welding seam, poor formation of welding, high sensitivity of hydrogen induced cracking on welding seam and heat affected zone.
湿法水下焊接最常见的缺陷是 :焊缝气孔、焊缝成形差、焊缝及热影响区氢致裂纹敏感性大 。
Based on the theory of hydrogen enhanced local plasticity of the hydrogen induced cracking,the paper presents a fractal model of hydrogen induced cracking,and sets up a relation among the effective surface energy Γ(H) ,fractal dimension D and stress intensity factor of hydrogen induced cracking K IH under hydrogen environment.
基于氢致裂纹扩展的氢增塑性理论 ,提出一种氢致裂纹扩展的分形模型 ,并根据分形几何理论 ,建立了金属在氢环境下广义有效表面能Γ(H)与分形维数D以及氢致裂纹扩展应力强度因子KIH的关系 ,从而得到D与KISCC的关系 ,并进行实验验证 ,表明方法的正确
The unqualified causes of the hot rolled plate of Q235,16MnR are analysed by low times test,metallographic examination,electron microscope scanning in inspection,the results show that the inclusion of MnS can cause hydrogen aggregation and lead to hydrogen induced cracking formation,and carbon segregation in plate center can cause bainite structure and lead to inspection unqualified.
结果表明:MnS夹杂引起聚集氢,导致氢致裂纹的产生,以及碳在板材心部的偏析,钢板中心出现了贝氏体组织,使探伤不合格。
This paper deals with the initiation and propagation of hydrogen induced crack while 10CrNi3MoV steel of 590 MPa grade was welded by MIG welding using WM960 S wire and Ar+20%CO 2 mixed gas without preheating.
研究了气体保护焊 (WM96 0 -S焊丝和Ar +2 0 %CO2 气体 )不预热焊接5 90MPa级 10CrNi3MoV钢氢致裂纹萌生和扩展规律。
This paper explicates the inherent mechanism of stress corrosion crack and hydrogen induced crack is same ,that belong to the hydrogen induced fracture mechanism, based on the mechanism, influence factor, shape looks, taking place area and time of them.
作者从应力腐蚀裂纹和氢致裂纹的机理、影响因素、形貌、发生区域、发生时间来论证球罐的应力腐蚀裂纹和氢致裂纹的内在机理是一样的,属于氢致开裂机理。
The result showed that the gray cast iron is not more sensitive to the hydrogen-induced crack than high-tensile steel.
采用排液测氢法和插销试验法较系统的研究了氢对钢芯石墨化铸铁焊条焊补的灰口铸铁铸件冷裂倾向的作用 ;将试验结果与高强钢综合比较 ,得出灰口铸铁补焊对氢致裂纹不甚敏感的结论。
The result shows that gray cast iron is not more sensitive to the hydrogen-induced crack than high-tensile steel.
采用排液测氢法和插销试验法较系统地研究了氢对钢芯石墨化铸铁焊条施焊的灰口铸铁焊接接头冷裂倾向的作用;将试验结果与高强钢综合比较,得出灰口铸铁对氢致裂纹不甚敏感的结论。
Study on Hydrogen-Induced Cracking of Steels for Transportation Gas Pipeline;
输气管道用钢抗氢致裂纹（HIC）性能的研究
High environment humidity increases the susceptibility to hy-drogen induced cracking and stress corrosion cracking.
高湿度能增大氢致裂纹和应力腐蚀开裂倾向。
STUDY OF THE CRITICAL TEMPERATURES FOR DELAYED HYDRIDE CRACKING IN N18 ZIRCONIUM ALLOY
N18锆合金氢致裂纹延迟开裂临界温度研究
Study on Hydrogen-Induced Cracking of Steels for Transportation Gas Pipeline;
输气管道用钢抗氢致裂纹（HIC）性能的研究
The crack eventually caused the chord to fracture.
裂纹最终致使弦杆断裂。
Fatigue Crack Propagation Behavior of NZ2 Zirconium Alloy with Different Hydrogen Contents
含氢NZ2锆合金疲劳裂纹扩展行为
Study of Critical State of Crack Propagation in Hydrogenation Reactor
加氢反应器裂纹扩展临界状态的研究
Cracking Analysis and Safty Evaluation of Hot-Wall Hydrogenation Reactors's Nozzle's Crack;
热壁加氢反应器接管裂纹断裂与安全评价研究
Crack Analysis and Disposal for the Weld of High-Pressure Stainless Steel Pipe in Hydrocracking
加氢裂化高压不锈钢管道焊缝裂纹分析及处理
FRACTURE TOUGHNESS MEASUREMENT OF ROCK WITH FRACTAL CRACKS USING HYDRAULIC FRACTURING
水力致裂法测定分形裂纹下岩石的断裂韧性
Hydrogen Permeation and Hydrogen Induced Cracking of Drill Pipe Steel S135
石油用S135钻杆钢氢渗透与氢致滞后开裂行为
Investigation on Anti-hydrogen Induced Cracking Properties of X80 Pipeline Steel
X80级管线钢抗氢致开裂性能研究
Furthermo re, the zinc vaporating and oxydizing cause air bubble, incomplete fusion and cr ack.
锌挥发和氧化会导致气孔、熔合及裂纹。
A flaw in the crystal that caused it to shatter.
水晶上的一处裂纹导致了它的破碎
EFFECT OF HYDROGEN ON THE DEFORMATION PROCESS AHEAD OF CRACK TIP IN BCC SINGLE CRYSTAL
氢对体心立方金属裂纹尖端变形过程的影响
Analysis of Crack on the Pipeline of ARDS Reactor and Safety Measure
加氢装置反应器管线裂纹分析及安全对策
Analysis and Treatment to Hydrogen Sulfide Stress Corrosion Cracking of CF-62 Steel Tank;
CF-62钢制球罐硫化氢应力腐蚀裂纹分析及处理
LOW CYCLE FATIGUE CRACK GROWTH RATE IN H_2S ENVIRONMENTS
硫化氢环境中低周疲劳裂纹扩展速率的研究
FAILURE ANALYSIS OF BELLOW EXPANSION JOINT IN HYDROCRACKING UNIT
加氢裂化装置中波纹管膨胀节失效分析