解析管板与壳体连接焊接接头结构
热交换器产物中的固定式不带法兰的管板与壳体的衔接焊接接头是产物上的首要焊接接头，制作过程中焊接接头内部安排的缺点，如夹渣、气孔、未熔合、未焊透、裂纹以及安排粗大等，将影响焊接接头的机械功能，也影响产物运用的可靠性，给运用单位带来不必要的经济丢失，是个不行无视的疑问。经过对焊接接头功能影响要素的剖析和实验，调整相应的布局参数和焊接技能参数，避免焊接接头缺点的发作，进步接头机械功能，然后进步产物的运用寿命，削减丢失，节省了资料。
toward
Connection tube plate heat exchanger products without flange and shell welding joint is the primary product of the welded joint, joint internal arrangement of the shortcomings of welding production process, such as slag, porosity, incomplete fusion, lack of penetration, crack and large, will affect the welded joint mechanical function, also affects the reliability of product u, to u the unit to bring unnecessary economic loss, is a can not ignore the question. After the welding joint function influence factor analysis
新概念作文大赛
and experiment, adjust the layout of the corresponding parameter and welding technical parameters, to avoid the ont of weld defects, progressive joint mechanical function, then the progress of life, the product cut loss, save the data.
1 疑问的提出
Put forward 1 questions
清洁提单在产物出产过程中，焊接布局参数、焊接技能参数、焊接前的预备和操作办法等要素都会影响焊接接头的质量，在焊接时就要经过操控关联技能参数来操控焊接接头内部质量，尽可能进步焊接接头的机械功能。在许多技能要素中以布局参数和焊接技能参数对焊接接头质量影响最大，为此，坡口尺度改变对焊接接头质量的影响及焊接技能参数对焊接接头质量的影响是本课题的首要内容。
In the production process, the welding parameters, welding parameters, layout skills before welding preparation and operation methods and other factors will affect the quality of the welding joint, the welding will be after manipulation skills to control the welding parameters associated with the internal
affectionately
quality of joints, as far as possible the progress of welded joints mechanical function. In many skill factors in layout parameters and welding parameters on the welding joint quality skills most affected, therefore, groove scale effect on the quality of welded joint and the welding technical parameters influence on the quality of welding joint is the main contents of the project.
经过研讨不一样尺度的坡口用一样焊接技能参数下焊成的接头在焊接接头安排、机械功能、焊接应力散布的改变；比拟对焊接接头质量影响最小的布局尺度，选出最优技能参数。
take you
Through the rearch of different scales of the groove joint welding technique parameters as welded in arrangement, welded joint mechanical function, the welding stress distribution change; compare layout scale minimal impact on the quality of welding joint, the optimum technical parameters.
2 坡口尺度的断定
Concluded that the 2 bevel scale
产物的描绘坡口尺度如图1所示，其间，管板车边尺度为0.25δ，与壳体组对后坡口空隙为0.4δ1，详细依据不一样的板厚在国家规范中有清晰的规则。
端午节的由来和习俗Product description groove scale as shown in Figure 1, in the meantime, the tube plate edge scale is 0.25 Delta, and the shell group of groove gap of 0.4 delta 1, detailed on the basis of different thickness have clear rules in the national standard.
本课题依据中出产单位的实际情况，δ和δ1的取值如表1。依据表中的数据，按《钢制压力容器》规范的有关规则，能够别离计算出管板车边尺度和坡口空隙尺度。
According to the actual situation of production units in the value of delta and delta 1, as shown in table 1. On the basis of the data in the table, according to the rules of " steel pressure vesl " stand
ard, can calculate the tube car side parting scale and groove gap scale.
师大二附
在本次实验中，为了削减工作量，试件的坡口组对成巨细端，最大值取6mm，最小值取1mm。尽管该值与国家规范的需求有收支，但契合焊接技能中确保焊接接头质量的有关需求，对
实验成果的正确性影响不显着。
In this experiment, in order to reduce the workload, try groove component on the size, the maximum 6mm, minimum 1mm. Although the value of payments and the national standard requirements, but in line with relevant requirements of welding joint quality ensure welding skills, correct influence on experimental results were not significant.clog
3 模仿实验与检测
3 imitation experiment and detection
汉英翻译为确保布局参数对焊接接头的安排、应力和机械功能等方面影响的实验成果精确，在焊接过程中，需求焊接技能参数坚持不变。
To ensure that the layout parameters on the experimental results of welding joint arrangement, stres
加勒比海盗4台词s and mechanical function of accurate, in the welding process, welding technical parameters constant demand.
本实验的试件布局与产物实际运用的布局附近。对焊接接头的检测首要包含焊接接头热影响区应力值、机械功能测验和
