scholarly journals Mechanized synergic welding with pulsed electrode wire feed

2016 ◽  
Vol 1 (2) ◽  
pp. 19-24 ◽  
Author(s):  
В Лебедев ◽  
V Lebedev
Keyword(s):  
Welding Current ◽  
Automatic Welding ◽  
Electrode Wire ◽  
Pulse Feed ◽  
Synergetic Control ◽  
Wire Feed

A number of problems, related to synergetic control of the process of the arc mechanized and automatic welding with the regulated pulse feed of the electrode wire, are considered. It is noted, that the known systems with a synergetic control due to the impulse algorithms of operation of modern structures sources can be replaced by more simple and less power-intensive systems with the use of the controlled pulse feed of electrode wire. It is determined, that in the systems with the controlled pulse feed of electrode wire the various structures of feed-backs are used on the parameters of an arc process. It is shown, that the required component of feed-back structure in the considered process is a feed-back on the welding current.

Impact of Electrode Wire Feed Ways on Residual Stresses in Welded Joints

2015 ◽  
Vol 752-753 ◽  
pp. 285-290 ◽  
Author(s):  
Artem Kryukov ◽  
Nikolay Pavlov
Keyword(s):  
Residual Stresses ◽  
Welded Joints ◽  
Shielding Gases ◽  
Electrode Wire ◽  
Pulse Feed ◽  
Continuous Feed ◽  
Series Of Experiments ◽  
Wire Feed ◽  
The Way

A series of experiments have been done to evaluate the way an electrode wire feed affects residual stresses in welded joints. It was found that an electrode wire pulse feed combined with shielding gases decreases residual stresses up to two times in comparison with welding with a continuous feed of an electrode wire.

scholarly journals EFFECT OF PROCESS PARAMETERS ON HARDNESS, DEPTH OF HEAT AFFECTED ZONE AND MICRO STRUCTURE OF WELDMENT IN MIG WELDING

2015 ◽  
Vol 44 (2) ◽  
pp. 132-136
Author(s):  
Subrata Saha ◽  
Naureen Binte Shahjahan ◽  
Naseem Ahmed
Keyword(s):  
Process Parameters ◽  
Heat Affected Zone ◽  
Welding Current ◽  
Medium Carbon Steel ◽  
Ann Model ◽  
Current Electrode ◽  
Medium Carbon ◽  
Electrode Wire ◽  
Hardness Depth ◽  
Good Agreement

Electrode wire diameter, welding current, electrode wire feed rate, arc length are influential processparameters for hardness, depth of heat affected zone and microstructure of weldment in case of MIG weldingprocess. In this work, the effect of these process parameters on weldment characteristics had been studied.Experiments were conducted using bead-on surface of medium carbon steel plate in a semi-automatic MIGwelding machine. Hardness, depth of heat affected zone and microstructure of weldment were examined. Anartificial neural network (ANN) based modeling of the experiments had been successfully done to realize thepatterns of results obtained from the experiments. It had been observed that the microstructures obtained inthese weldments were distinctly different from that of the base metal. Microstructures, hardness and depth ofheat affected zone of weldment depends on the process parameters. ANN model shows good agreement with theexperimental results in case of hardness and depth of heat affected zone of weldment.

scholarly journals Influence of the CO2 Content in Shielding Gas on the Temperature of the Shielding Gas Nozzle during GMAW Welding

2020 ◽  
Vol 4 (4) ◽  
pp. 113
Author(s):  
Martin Lohse ◽  
Marcus Trautmann ◽  
Uwe Füssel ◽  
Sascha Rose
Keyword(s):  
Carrying Capacity ◽  
Gas Metal Arc Welding ◽  
Welding Current ◽  
Shielding Gases ◽  
Shielding Gas ◽  
Metal Arc Welding ◽  
Average Current ◽  
Gas Nozzle ◽  
Wire Feed ◽  
Gmaw Welding

Gas metal arc welding torches are commonly chosen based on their current-carrying capacity. It is known that the current-carrying capacity of welding torches under CO2 is usually higher than under argon dominated shielding gases. In this publication, the extent to which this can be attributed to the shielding gas dependent arc radiation is investigated. For this purpose, the influence of the shielding gas on the thermal load of the shielding gas nozzle of a GMAW torch was calorimetrically measured. These experiments were carried out for four different shielding gases (argon, CO2, and two argon/CO2 mixtures). The measurements were all performed at an average current of 300 A. The welding current was set by adjusting the wire feed rate or the voltage correction. For each case, a separate set of experiments was done. It is shown that the changed arc radiation resulting from the different shielding gases has an influence on the heat input into the gas nozzle, and thus into the torch. For the same shielding gas, this influence largely correlates with the welding voltage.

STUDY ON THE DESIGN ADAPTIVE RECURRENT WAVELET NEURAL NETWORK CONTROL OF AN AUTO TIG WELD SYSTEM

2015 ◽  
Vol 39 (3) ◽  
pp. 625-635
Author(s):  
Yung-Lung Lee ◽  
Shou-Jen Hsu ◽  
Yen-Bin Chen
Keyword(s):  
Neural Network ◽  
Welding Current ◽  
Wavelet Neural Network ◽  
Network Control ◽  
Neural Network Control ◽  
Argon Flow Rate ◽  
Argon Flow ◽  
Human Operators ◽  
And Performance ◽  
Wire Feed

An adaptive recurrent wavelet neural network control (WNN) method was developed to improve quality and system performance in welded aluminum alloy vacuum chamber production. Tests were carried out using a multi-gun automatic system. Using WNN, this research is meant to overcome weld inconsistencies and faults that cause leaks and are due to variability of skill and performance among human operators. By using this method to control welding current, wire feed rate, argon flow rate and welding speed, desired results are hopefully achieved.

Research of Automatic Welding Machine Controlling System Based Single-Chip

2012 ◽  
Vol 214 ◽  
pp. 700-704
Author(s):  
Jin Hu Song
Keyword(s):  
Production Efficiency ◽  
Feed Speed ◽  
Automatic Welding ◽  
Single Chip ◽  
Interface Circuit ◽  
Welding Machine ◽  
Welding Technology ◽  
Controlling System ◽  
Wire Feed Speed ◽  
Wire Feed

In this paper, a scheme for the structure and controlling design of an all-position automatic welding machine is studied, and also the automatic welding systemis explored in depth. In this system, the C8051F020 single chip is used as the controller and the DC servo-motor as the executive component. Through the interface circuit and software program of the single chip, the system can control and harmonize the wire-feed speed as well as the tread and swing of the welding tractor, and can meet the needs of the all-position welding technology, hence realizing the automation of welding, and increasing the welding production efficiency.

Dynamics of electrode wire feed systems

2009 ◽  
Vol 23 (12) ◽  
pp. 948-956
Author(s):  
V.A. Lebedev
Keyword(s):  
Electrode Wire ◽  
Wire Feed

TIG Auto Welding Process Using Adaptive Wavelet Neural Network Controller

2015 ◽  
Vol 764-765 ◽  
pp. 634-639
Author(s):  
Yen Bin Chen ◽  
Yung Lung Lee ◽  
Shou Jen Hsu ◽  
Chin Chun Chang ◽  
Yi Wei Chen
Keyword(s):  
Neural Network ◽  
Vacuum Chamber ◽  
Welding Current ◽  
Wavelet Neural Network ◽  
Feed Speed ◽  
Automatic Welding ◽  
Adaptive Wavelet ◽  
Neural Network Controller ◽  
Network Controller ◽  
Wire Feed Speed

The study proposed adaptive wavelet neural network controller can achieve good and precise welding control performance and use synchrotron radiation research center developed multi-gun group automatic welding system to verify the validity of the research method. Multi-gun group welding system is applied in Taiwan Photon Source (TPS). Storage ring aluminum alloy vacuum chamber of Taiwan Photon Source .In the past aluminum alloy vacuum chamber welding, it all depends on the empirical welding rule of operator to give appropriate welding current, argon flow, wire feed speed and welding speed for control. Therefore, the paper uses automatic welding skill, which takes National Instruments PXI-8180 system as basic structure, and adaptive wavelet neural network controlled four optimized parameters, I.E. welding current, wire feed speed, flow rate of argon gas and welding speed, The vacuum chamber pressure value is also up to 6.2X10-10Torr/mA. It is successfully applied to the TPS system. Therefore, it can prove the effectiveness and practicality of the method proposed in this study.

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