钨极氩弧焊用的焊丝ER5356的化学成分是什么

1：手法应选择不摆动左向焊.
2：要得到金黄色和银白色焊缝,必须保证氩气的纯度为99.99%,这个正规的生产氩气的都可以做到.
3：焊接时线能量尽可能小,焊接速度在焊透的情况小尽可能快,多层多道焊.

钍钨极,就是有放射性那种.

什么是氩弧焊
氩弧焊即钨极惰性气体保护弧焊,指用工业钨或活性钨作不熔化电极,惰性气体(氩气)作保护的焊接方法,简称TIG.
焊接有很多种：二氧化碳保护焊,MAG、MIG、螺柱焊都是属于电弧焊接
点焊、缝焊等属于电阻焊
电阻焊是将被焊件置于两极之间加压,并在焊接处通以电流,利用电流流经工件接触面及其邻近区域产生的电阻热将其加热到溶化或塑性状态,使之到达金属结合而成牢固接头的工艺过程.
优点：
1.焊接质量好
2.生产效率高
3.省材料,成本低
4.劳动条件好,操作简便,易于实现机械化和自动化.
缺点：
1尚缺乏可靠的无损检测方法
2.焊接设备及其配电设备投资较大
3.焊件的尺寸,形状和厚度受限制
4.搭接接头增加构件自重且接头抗拉疲劳强度均较对接接头低.
还有埋弧焊、气焊、锡钎焊等等
还有特种焊接,比如：微弧等离子焊（白车身顶盖后角板）、电子束焊（齿轮）、激光焊（车身地板）、摩擦焊（后桥壳管喝法兰转向杆）等等
现在用的比较多的是机器人焊接.

YES

一、不锈钢焊条的电流强度应较碳钢焊条小15～20%,常用碳钢焊条选用电流强度参照表1.
表1
焊条牌号 Фmm 2 2.5 3.2 4 5
位置
J 422 各种位置40～80A 70～90A 90～130A 160～210A 220～270A
J 507 40～70A 60～90A 90～120A 140～180A 170～210A
J 557 40～70A 60～90A 90～120A 140～180A 170～210A
二、焊接不锈耐酸钢,在保证焊透的前提下,尽量选用较小电流,较快焊速,不作横向摆动的短弧焊接,层间温度要控制在100℃以下,接触腐蚀介质的表面要避免重复受热,尽量安排在最后焊.

从右向左焊接,电流40——50左右,根据个人操作水平,焊接速度稍快,钨针突出长度根据操作习惯,有些人把钨针卧进去2毫米觉得好用,钨针与工件间距宜小点,减少焊接变形和出现晶间腐蚀的可能

C

To analyze tungsten electrode argon arc welding (GTAW) arc welding arc under the effect of applied longitudinal magnetic field behavior,based on the dc tungsten electrode argon arc welding arc as the research object,according to the theory of magnetohydrodynamics is established based on free burning GTAW arc welding under the effect of applied longitudinal magnetic field of the fluid flow and heat transfer process of the three-dimensional transient numerical model,all programs are written in FORTRAN language.
首先,分析外加纵向磁场的分布规律,建立励磁线圈磁感应强度计算数学模型,并对基本方程中的瑕点进行处理,在数值计算时采用稳定性好,计算精度高,误差容易控制的龙贝格积分法.
First of all,analysis of the applied longitudinal magnetic field distribution,excitation coil magnetic induction strength calculation mathematical model is established,and the imperfections in the basic equations,the numerical calculation with good stability,high calculation precision,the error is easy to control the dragon berg integral method.
该数学模型和数值计算方法具有模型简单,计算精度高和计算速度快等特点.
The mathematical model and numerical calculation method is simple,high calculation precision and calculation speed,etc.
在外加纵向磁场分析和计算的基础上,建立了电弧空间内带电粒子运动速度和位移的三维数学模型.
In the applied longitudinal magnetic field on the basis of analysis and calculation,established the arc space charged particle movement speed and displacement of three dimensional mathematical model.
根据牛顿运动定律,麦克斯韦方程给出了控制方程组和边界条件,模拟了GTAW焊接过程中外加纵向磁场作用条件下电弧空间内带电粒子运动行为动态变化过程.
According to Newton's laws of motion,maxwell equations governing equations and boundary conditions are given,GTAW welding process was simulated with longitudinal magnetic field effect under the condition of arc space charged particle motion behavior dynamic change process.
为深入研究外加纵向磁场作用下GTAW焊电弧动态行为数值模拟提供了前提和基础.
For further research and longitudinal magnetic field under the action of GTAW welding arc dynamic behavior simulation provides the premise and foundation.
根据质量守恒定律、动量守恒定律、能量守恒定律以及麦克斯韦方程,建立了描述外加磁场作用下GTAW焊接电弧传热传质过程的控制微分方程组,并给出了相应的边界条件和初始条件.
According to the law of mass conservation,momentum conservation law,the law of conservation of energy and maxwell's equations,established the description and magnetic field under the action of heat and mass transfer process of GTAW welding arc control system of differential equations,and gives the corresponding boundary conditions and initial conditions.
采用分离变量法成功地处理了电场、磁场、流场和热场的耦合问题.
Using the separation variable method successfully deal with the electric field,magnetic field,flow field and thermal field coupling problems.
利用所建立的数值模型,对外加纵向磁场下镁合金GTAW焊电弧的动态行为进行了数值分析.
Using the established numerical model of magnesium alloy under the applied longitudinal magnetic field GTAW welding arc dynamic behavior to carry on the numerical analysis.
以无外加磁场作用下电弧形态为参考,研究了外加纵向磁场及主要焊接参数对电弧电场、电流密度、温度分布、电弧电压及等离子流速分布的影响.
With no additional magnetic field under the action of arc shape for reference,studies the applied longitudinal magnetic field and the main welding parameters on arc electric field and current density,temperature distribution,the influence of arc voltage and the plasma velocity distribution.
得到了外加纵向磁场作用下GTAW焊电弧动态行为的变化规律.
Got the applied longitudinal magnetic field under the action of GTAW welding arc dynamic change rules of behavior.

3mm钨极（钍钨极）
焊丝2mm
电流180A（交流）
氩气流量10L/min
喷嘴10mm