咬边

从数值模拟入手，采用有限元分析的方法，使用ANSYS软件进行数值模拟，通过TIG焊过程中不同焊接速度时熔池成形规律，分析解决高速焊接时的咬边问题；

The finite element analysis method and the software ANSYS are used to solve the undercut problem in high speed welding through the regularity of welding pool in shaping under the different conditions in TIG welding .

印制板设计与制作工艺通风管道的制作工艺及咬边机设计

The facture craftwork of vent-pipe and the undercut machine design

增加TIG焊焊接速度可以提高生产率，但焊速增加，导致电弧阳极斑点滞后，造成电弧较大的后拖，引起焊缝的严重咬边和成形不良。

Dragged arc of TIG welding at a high speed causes weld undercut , and bad appearance of weld .

在GMAW焊接过程中，当焊接速度达到某一临界值时会出现咬边缺陷，进一步提高焊接速度就会产生驼峰焊道。

In GMAW welding process , when the welding speed reaches a certain threshold , there will be onset of weld bead undercut defects .

YSP-15型液化石油气钢瓶瓶嘴的角焊缝不允许出现裂纹、咬边、夹渣、气孔等缺陷。

It is not to allow the occurrence of rejectable defects inside the nozzle weld of YSP-15 LPG cylinder such as slag inclusion , cluster porosity , undercut , especially cracking .

活性剂对焊缝咬边倾向及接头疲劳性能的影响

Influence of activating flux on undercut and fatigue property of welded joints

螺旋咬边式钢板仓结构的有限元分析

Finite Element Analysis on Steel Silo Structures with Spiral Undercut

避免咬边是提高焊接速度过程中的关键要素。

Avoiding undercut is the most important key to enhance welding speed .

焊接咬边导致锅炉管板开裂失效及其预防

Prevention of Cracking of Boiler 's Tube and Plate Caused by Weld Undercutting

高速焊接时焊缝咬边的形成机理

Mechanism of Undercut Phenomenon in High Speed Welding

汽车消声器纵缝咬边机芯模胀合技术

Expanding and closing technique of core-die of longitudinal seam occlusion machine for automobile silencer

钢锭轧板斜咬边板形控制技术

Technology of Plate Shape Control Using Inclined Edge-biting in Rolling from Ingot to Plate

在主要构件中，横向接缝的咬边最大允许多深？

What maximum depth of undercut is permitted in transverse splices of primary members ?

焊接速度是薄板高效焊接的重要工艺参数，制约焊接速度提高的主要障碍之一是咬边缺陷的产生。

Welding speed is a key parameter of high speed welding when joining thin sheets .

但是热输入过大会引起焊缝出现咬边以及下榻等焊接缺陷。

However , too much heat input would cause welding defects , such as undercut and bogging down .

在其他条件不变的前提下，焊缝咬边程度随着温度梯度的增大而增大。

The depth of undercut is bigger with the increasing of temperature gradient when the other parameters are the same .

在焊接速度和热输入低于一定值时，不会发生咬边。

When the welding velocity and welding power are limited below a certain value , the undercut will not appear .

可降解蜂窝塑料薄膜育苗容器制作机涂胶装置工艺研究通风管道的制作工艺及咬边机设计

Technology of Smearing Glue on Decomposable Honeycomb-shape Plastic Film Seedling-propagating Container The facture craftwork of vent-pipe and the undercut machine design

与单一激光焊相比，复合焊焊缝的余高和咬边较大。

The strengthen height and the undercut of weld were larger with hybrid laser / plasma welding than those with single laser welding .

横向焊接时由于熔化金属重力的作用，会引起熔池金属下淌，从而产生咬边以及焊瘤等焊接缺陷。

In horizontal position welding , the gravity makes molten metal flow downward and sometimes causes weld defects such as undercut and overlap .

试验结果表明，当短路过渡焊接在192A时，未出现咬边和焊瘤等缺陷。从而使横向焊接的效率得到显著的提高。

During the short-circuit transition welding when the welding current is 192 A , there is no defect such as undercut and overlap .

针对高速焊接条件下的咬边问题，概述了熔池金属流体静力学模型、数值计算模型以及经验模型，并分析了各自的特点。

Aiming at the question of undercut in high-speed welding , this paper presented the model of hydrostatics , mathematics calculation and experience of melten-pool .

文摘：介绍了汽车消声器纵缝咬边胀合技术及其咬边芯模机构的设计计算。

Abstract : Expanding and closing technique of core-die of longitudinal seam occlusion machine for automobile silencer and design calculation of such mechanics have been introduced .

前者试验获得了一定激光功率和离焦量条件下两组焊接速度和送丝速度的匹配关系，并发现填充焊丝的加入对焊缝咬边现象确有改善；

Two groups of matching relation of the weld speed and the wire feed rate were found in a condition of invariable laser power and focus position .

从数值模拟入手，采用大型有限元软件ANSYS研究了不同尺寸、不同位置的咬边缺陷对压力管道焊接接头应力集中系数的影响。

This paper researches the effects of undercut defect on stress concentration in welding joint of pressure pipe by means of the finite element method software ANSYS .

结果表明，填充焊丝可以消除铝合金激光自熔焊时的凹陷、咬边等宏观缺陷；

The results show that , the filler wire can eliminate the subside and undercut of butt joints which are inevitable in the laser welding aluminum alloy without filler wire .

但是，单独激光焊接铝合金接头气孔、咬边、裂纹等冶金缺陷倾向较大。

However , the challenges for laser welding of aluminum alloys are the too many metallurgical defects , such as porosity , undercut cracks and so on , which reduces the joint mechanical properties .

再采用与实物等厚度、与真实咬边等尺寸的模拟试样，进行与实际结构等应力范围条件下的模拟疲劳试验。

Using the samples with equal thickness to the tank and with the same size as the real undercuts , a simulation fatigue testes are performed under the stress range of an actual structure .

焊缝不能有未熔合，咬边，裂纹和其它影响产品工作和使用的缺陷。这些都已经经过采购人员的一再强调。

The weld shall be free of any lack of fusion , undercutting , cracks and other defects which could impair the worability or use of the product in question as specified by the purchaser .

对立角焊中气孔、夹渣、未焊透、焊缝余高凸起、焊波脱节、咬边、焊脚尺寸过大等缺陷产生的原因进行了分析，并提出了有效的解决方法。

This article analyzes the weld defects such as : blowhole , slag inclusion , incompletely filled groove , overlap , lack of fusion , undercut , over-sized leg , also it puts forward the solution .