• Title/Summary/Keyword: $CO_2$ Inverter Welder

Search Result 6, Processing Time 0.031 seconds

Development of the CO2 Inverter Welding Controller for Compensation of Voltage Loss (전압손실 보상용 CO2 인버터 용접기 콘트롤라 개발)

  • Bae, Jong-Il
    • Journal of the Korean Society of Manufacturing Process Engineers
    • /
    • v.4 no.4
    • /
    • pp.54-60
    • /
    • 2005
  • In a $CO_2$ inverter welding machine, stable arcs can be generated and a welding performance that is a goal of welding can be improved when stable electric power with a low voltage and a high current is supplied to a electrode that is the secondary part (output load terminal) and the base metal. For such a stable power supply, therefore, the AC arc welding machine, the thyristor welder, and the inverter welder have been developed in order according to development of the power electronics techniques. Up to now, the thyristor welding machine is still broadly used but the application volume is gradually reduced by development of the inverter welder. Because the welding performance of the inverter welder is very good and the weight and size of the welder is remarkably light and small. The final goal of this research is to develop the voltage loss compensator that is a drawback of the inverter welder and improve the welding performance using the developed compensator.

  • PDF

Development of Digital controlled SCR type CO2 Welding System for Implementation Pulse Output (펄스 출력 구현이 가능한 디지털 제어의 SCR형 CO2 용접시스템의 개발)

  • Eun, Jong-Mok;Choe, Gyu-Ha
    • Journal of Welding and Joining
    • /
    • v.32 no.1
    • /
    • pp.102-107
    • /
    • 2014
  • SCR(Thyristor) type $CO_2$ welders have widely used for the welding process of heavy industries such as shipbuilding and plant. Since the industrial fields of shipbuilding and plant are usually exposed to severe welding condition with lots of dust, extreme temperature, high humidity and vibration, it is not recommended to use inverter type welder despite its state-of-the-art technology. Many sophisticated functions in the inverter welder may not work due to malfunction of its sensitive components. Hence this study focused on digitalization of SCR $CO_2$ welder by making use of microprocessor for SCR phase control. By this application, fine control of output of the $CO_2$ welding systems is achieved. Also pulse output mode of operation is realized and its verification is carried out with aluminum sample welding. The experimental results showed sound weld bead. The front operation panel provide user with numerical parameter settings and monitors. It will help precise weld process monitoring and control with digital value.

Single Phase Converter Design for Fuel Cell Based Welding Machine (연료전지에 의해 구동되는 용접기용 단상 컨버터 설계)

  • Min, Myoung-Sik;Park, Sang-Hoon;Park, So-Ri;Won, Chung-Yuen
    • Proceedings of the KIPE Conference
    • /
    • 2008.06a
    • /
    • pp.624-627
    • /
    • 2008
  • It is generally used the boost converter for the welding machine using fuel cell. But this type generates the duplicate loss between boost converter and inverter. As a result, the whole efficiency is lower than conventional inverter arc welder and the cost is expensive due to additional switching device. Therefore, we proposed the inverter rectification type DC-DC converter with boost converter function in fuel cell based TIG welder. The performance of the proposed technique is evaluated on a 1.2kW fuel cell stack based experimental prototype circuit.

  • PDF

The Control Method for Output Voltage Compensation on the Secondary of Inverter (인버터 용접기 2차측 출력 전압손실을 보상하는 제어방법)

  • Bae, Jong-Il;Ryu, Chi-Kook;Ju, Jin-Ho
    • Proceedings of the KIEE Conference
    • /
    • 2003.07d
    • /
    • pp.2772-2774
    • /
    • 2003
  • The power source of inverter welder stable power of low voltage and high current. Because if shouldn't be, it is caused to spark between the parent metal and the peak. So that, we designed to be base on high frequency transformer and reactor of DC part. Then, we optimized control of PWM, current rising slant, voltage, current, pulse current and inverter out-put voltage. Also we designed PCB for EMI and noises.

  • PDF

A Study on the High Dynamic Performance of the Inverter Arc Welder (인버터 아크용접기의 고성능제어에 관한 연구)

  • 김규식;정해천
    • Proceedings of the KIPE Conference
    • /
    • 1997.07a
    • /
    • pp.40-44
    • /
    • 1997
  • Along with the rapid growth in microelectronics and power electronics technologies, various advanced control methods have been successfully implemented in real time and shown to be useful in controlling CO2 arc welding systems with high dynamic performance. In this paper, the slope of welding currents is controlled not to be so high in the case of short circuit welding mode. This results in less spatter. In addition, the data-base is constructed for the optimal welding conditions.

  • PDF

A Study on Effect of Flex Additions for Selecting the Process Parameters in GMA Welding processes (GMA 용접공정에서 공정변수 선정을 위한 플럭스 첨가에 관한 연구)

  • Kim, In-Ju;Kim, Jun-Ki
    • Journal of the Korean Society of Mechanical Technology
    • /
    • v.13 no.1
    • /
    • pp.17-22
    • /
    • 2011
  • As the quality of a weld joint is strongly influenced by process parameters the welding process, an intelligent algorithms that can predict the bead geometry and shape to accomplish the desired mechanical properties of the weldment should be developed. In this study, prepared by ${\Phi}1.6mm$ GMA welding of metal wire nose Advice jowelui 350A 600A grade level inverter welder and DAIHEN SCR's were carried out using welding. Welding conditions were 5.5m/min wire feed rate the welding current is rapidly transmit approximately 260A, welding voltage was about 30V. CTWD a 22mm, shielding gas was Ar 20L/min and the welding speed was a 240mm/min. Using data collected during welding equipment welding current and welding voltage waveform was analyzed by measuring the volume of the transition mode. Addition of $CaCO_3$ as a loss of the spread of the weld bead dilution rate decreased, suggesting that, GMA in the overlay welding bead shape control, dilution control and may be used as a welding flux is considered. Stabilizing effect of the arc by the Ca-containing $CaF_2$, $CaCO_3$, $CaMg(CO_3)_2$, respectively, welding flux 0.1wt.% added GMA welding and weld overlay were evaluated with dilution, $CaF_2$, and $CaMg(CO_3)_2$ added to the dilution of Seemed to increase.