焊缝

The design and development of software of the STAW were put forth.

介绍了马鞍型焊缝埋弧自动焊机软件控制部分的设计与开发。

After the welding finishes, further reduce the welding stress by adopting partial high temperature annealing as follows, heat the welding-repaired seam and steel plate around up to 600℃ with tracklayer heating device, and then cover it with mountain leather to hold temperature, cooling down slowly.

焊接完成后采用局部高温退火的办法进一步消除应力。具体做法是：用履带式加热装置将焊补焊缝及周边钢板加热到600℃，用石棉覆盖保温，缓慢冷却。

4 Results of nondestructive test for weld joints shall be graded according to JB 4730. Following requirements shall be met: a For radial test, quality grade of radial transillumination can't be lower than Grade AB, and that of weld joints shall meet table 10; b For supersonic test, approval standard for weld joints are as follows: 1 For weld joints of 100% supersonic test, grade Ⅰ. 2 For weld joints of local supersonic test, grade Ⅱ. c For magnetic particle test and penetration test, grade Ⅰ.

7.5.4 管道焊接接头的无损检测应按 JB 4730 进行焊缝缺陷等级评定，并符合下列要求： a 射线检测时，射线透照质量等级不得低于 AB 级，焊接接头经射线检测后的合格等级应符合表 10 的规定； b 超声波检测时，管道焊接接头经检测后的合格标准如下： 1 规定进行 100%超声波检测的焊接接头 I 级合格； 2 局部进行超声波检测的焊接接头 II 级合格； c 磁粉检测和渗透检测的焊接接头 I 级合格。

Before installation,it has been discovered that the boiler water-wall pipes with small diameter and large wall-thickness of ultra-supercritical units in second-phase project for Huaneng Yuhuan Power Plant have comparatively serious unfused weld-joint defects,needing to carry out a large amount of inspection.

华能玉环电厂二期超超临界机组锅炉水冷壁小径厚壁管安装前发现焊缝存在较严重的未熔合缺陷，需进行大量检测。

It was found recently that magnetic arc blow, inherently happens with such kind of welding process, particularly in deep groove welding of the first layer, can produce various kinds of weld defects, interfere the welding operation and make the arc length control system to work unproperly.

近年来在MIG焊研究中发现电弧磁偏吹现象严重，特别是坡口对接封底焊，会造成多种焊缝缺陷，甚至无法进行焊接，还会造成弧长闭环控制系统混乱。

A short unwelded area in the weld line extending through the entire pipe so that fluid will leak out through the area very slowly.

针孔。指焊缝线上位焊接的、贯穿管子整个壁厚的细孔，可导致流体从该孔缓慢漏出。

Modern duplex steels are readily weldable but the procedure, especially maintaining the heat input range, must be strictly followed to obtain the correct weld metal structure.

双相钢容易焊接，但是为了获取适当的焊缝金属组织，必须严格遵循工艺，特别是保持热输入范围。

The product possesses fine performances of adhibiting oily surface, weldable, flexibility, filling and fine adhesion, noise of cars and strength of electrical welding line can be reduced after the use of heat expansion.

本产品具有优良的油面粘接性、可焊性、弹性、填充性及良好的附着性，热膨胀使用后可减少汽车噪音及增加电焊缝强度。

A welding seam tracking and controlling system has been presented , and abstracting the feature of the seam images.

分析了视觉传感焊缝跟踪系统的原理和特点。

3D model produce enormous degree of freedom.(3) Simulating have to employ multi-step load for moving heat source. In order to solve problems mentioned above and improve solution accuracy, this paper choused suitable material property parameter, and used transition mesh, with two point and line heat sources model. The program which applyload of moving heat sources and suitable time step was edited by means of ANSYS' APDL (ANSYS Parametric Design Language).

为了解决这一问题并提高计算精度，本文对高温时材料的物理性能参数进行了适当的选取和处理；采用过渡网格划分形式划分网格以保证焊缝处网格足够细小；点热源选取高斯函数分布和线热源进行叠加，利用ANSYS软件的APDL（ANSYS Parametric Design Language）语言编写程序实现移动热源的加载；选取适当的计算时间步长。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。