查询词典 weld

According to the chemical metallurgy principle of self-shielded weld and the analysis on the deoxidization and nitrogen fixation of the metal such as aluminium, titanium,and etc.

根据自保护焊接化学冶金原理，分析了铝、钛等金属对脱氧和固氮的作用，研究了适合自保护焊接合理的焊缝金属化学成

Slag detachability of new slag system basic electrode ;2. Weld fume quantity and emission rate of new slag system basic electrode ;3. It was discussed about the influence of the mentioned elements on the transition coefficient of basic electrode .

利用光谱分析和扫描电镜对高硬度钢质堆焊层金属进行分析，采用修正后的焊条药皮重量系数计算公式计算出Nb、Ti、V的过渡系数，讨论了上述元素在碱性焊条中过渡系数的影响因素，初步得出Nb、Ti、V的过渡规律。

Except larger spatter loss coefficient, other usabilities including the arc stability, the ability of reignition, detachability, melting coefficient, fluidity of the slag, the appearance of weld, and the degree of coating redden are all better than those of former A102 electrode.

在原A102焊条药皮配方的基础上，改进药皮配方，研制的A102焊条与原A102焊条各项工艺性能对比试验研究的结果表明，研制的A102焊条除飞溅率稍大，其它工艺性能均优于原A102焊条。

Based on the ICMmethod,the discrete topological optimization problem about spot-weld's existence or not is transformed into the continuous optimization problem on[0,1].The optimization model is founded with maximizing the structural stiffness as objective and structural strength as constraints.The problem of multi-objectives and multi-constraints is transformed into the problem of single-objective and single-constraint with the K-S function.The displacement and stress are transformed into the explicit function of design variables with the Response Surface Methodology.The optimization model is solved with Sequential Quadratic Program.

基于ICM（Independent Continuous Mapping，即独立、连续、映射）方法，将焊点有无的离散拓扑优化问题转化为[0，1]区间上的连续优化问题；建立了以结构刚度最大为目标、结构强度为约束的连续拓扑优化模型；采用K-S函数将多目标和多约束问题转化为单目标和单约束问题；运用响应面方法将位移和应力转化为设计变量的显式函数，采用序列二次规划方法求解优化模型。

It is found that the main source of fillet weld's angle distortion is the inherent shear strain component ε but not the transverse inherent normal component.

结果发现：角焊缝产生角变形的主要根源是固有剪切应变，而不是传统思维认为的横向固有正应变，且角变形的大小与固有剪切应变的分布形式密切相关。

Taking a welded T-joint as computing example,the forming mechanism of fillet weld's angle distortion was studied by combining thermal elastic plastic analysis with mapping strain component method.

以T形焊接接头为算例，结合热弹塑性有限元法和映射应变分量法，研究了角焊缝角变形的产生机制。

The principle of friction weld parameter measurement for drill pipe is introduced.

介绍了用MSP430F149单片机组成的石油钻杆摩擦焊接中的三个主要参数检测装置的原理、硬件电路、程序框图及部分源程序。

Low temperature properties of weld ; resistance measurement ; deep cooling treatment ; disperse educt ; brittle fracture at low temperature

本文通过多次实验，找出改善16Mn钢焊缝低温韧性的新工艺，即在淬火的基础上深冷处理(-196℃温度下的处理)。

The result of experiment proves that the arithmetic can get the edge of the weld pool image efficaciously .

实验结果表明，该方法能够比较有效地得出熔池图像的边缘。

Constant current output characteristics,deep melting penetration,even w- elding pool,and excellent weld.

具有恒流输出特征，熔透深，熔池均匀，焊缝成形良好。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"