构造了三维管接头焊接应力和局部热处理温度场。
The three dimensional welding residual stress and temperature fields in local PWHT are constructed.
同时，焊接应力的存在和水质不良加速了裂纹的扩展。
Besides, the welding stress and wicked water accelerate the crack growth.
提出了基于脉冲电磁力随焊控制焊接应力及变形新方法。
New idea to control welding residual stress and distortion with trailing impactive electromagnetic force was given.
控制网架的焊接变形与焊接应力是保证网架质量的关键之一。
Controlling on grid welding deformation and welding stress are the key problems for assuring grid quality.
随焊冲击碾压是一种控制薄壁结构焊接应力变形、防止热裂纹的新方法。
Weld with trailing impactive rolling (WTIR) is a new technique to reduce the residual stress and distortion and prevent hot cracking of thin-walled structure.
钢制容器人孔的焊接应力及塌陷变形，直接影响容器的焊接质量和使用寿命。
The notch welding stress and the collapse-deformation of steel container directly affects the welding quality and service life of the container.
这些工艺、方法的正确运用有助于控制港口起重机的主要结构件的焊接应力。
These methods can be helpful to reduce or control the welding stress in the structure of port crane.
钢制容器人孔的焊接应力及塌陷变形，直接影响容器的焊接质量和使用寿命。
Welding stress and concaving deformation of man-hole of steel vessel influence directly welding quality and life of using.
综合分析表明，拉杆材料焊接性能差，焊后冷却速度过快，以致焊接应力过大。
Comprehensive analysis shows that the welding rod material has poor welding performance, if the cooling rate after welding is too rapid, then the welding stress can be too large.
从如何控制焊接应力和焊接变形的角度出发，对斗底的焊接工艺进行研究和探讨。
From the aspects of how to control weld stress and weld deformation, welding process of bucket bottom is studied and discussed.
根据断口的宏、微观形貌，认为油管焊接后未及时消除焊接应力，产生了淬硬裂纹；
The macro and micro analysis of fracture indicates that it produces fracture because it doesn′t avoid welding stress in time.
焊接工件的温度场决定了焊接应力场和应变场，是影响焊接质量和生产率的主要因素。
The temperature field of welding workpiece determines the stress field and strain field, and it is also the main factor affecting the weld quality and production rate.
低合金高强钢特厚板的焊接，由于焊接应力的影响，在控制缺陷和变形方面都比较困难。
For welding the extra thick plate of low alloy high strength steel, due to the influence of welding stress, it relatively difficulty for controlling the defect and deformation.
详细介绍了主要受压件的焊接工艺、整体消除焊接应力热处理技术以及关键的检验控制点。
The welding procedure of main pressure parts , its bulk heat treatment and checking point are detailed.
首次在锤击消除焊接应力的数值模拟研究中，采用接触单元技术建立有限元模型模拟计算锤击作用。
In the numerical simulation of relieving residual stress by hammer peening, contact element technique was firstly adopted for establishing the finite model and calculating the hammer peening.
随着焊接热输入量的增加，由于熔池搅拌、焊接应力、合金元素烧损等原因，马氏体的分布更加散乱和密集；
By increasing the weld heat input, the distribution of martensite becomes more dispersive and glomerate due to the molten pool stiring, the welding stress and the burning loss of alloy elements.
阐述了超高层建筑大直径厚壁钢管的加工新工艺、新技术要求；提出防止焊接裂纹及振动时效消除焊接应力的措施。
The new process technology and technical requirement of large diameter thick wall steel tube for super tall building are discussed.
阐述了超高层建筑大直径厚壁钢管的加工新工艺、新技术要求；提出防止焊接裂纹及振动时效消除焊接应力的措施。
This article studies the ring die's high temperature wear-resistance in the process of manufacturing the heavy caliber thick-wall seamless steel pipe.
电子束焊接具有显著的小孔效应，这一特点决定着电子束焊接过程和普通熔化焊不同，并对其焊接应力和变形产生重要影响。
Electron beam welding has significant keyhole effect, it induces the electron beam welding different from general melting, and also important influence on its welding stresses and distortion.
本文基于大型有限元软件ABAQUS，开发了一个顺次耦合的焊接应力计算程序，对P 91钢焊接接头的残余应力场进行了模拟。
A coupling calculation method for welding stress was developed by ABAQUS code. The residual stress for welded joint of P91 steel was simulated by the method above.
通过分析TA2和Q 235b的焊接性，论述了钛与钢熔焊焊缝脆裂的机理，指出钛钢复合板焊接性能差的主要原因在于焊缝中产生了脆性的金属间化合物，从而导致焊缝在焊接应力的作用下发生开裂。
The results indicate that the brittle intermetallic compound in weld is the main reason why the weldability of the plate is bad, which leads to cracks under the effect of welding stress.
通过分析TA2和Q 235b的焊接性，论述了钛与钢熔焊焊缝脆裂的机理，指出钛钢复合板焊接性能差的主要原因在于焊缝中产生了脆性的金属间化合物，从而导致焊缝在焊接应力的作用下发生开裂。
The results indicate that the brittle intermetallic compound in weld is the main reason why the weldability of the plate is bad, which leads to cracks under the effect of welding stress.
应用推荐