WELDING POWER SUPPLY SYSTEM

Provided is a welding power source system for submerged arc-welding, which can stabilize the shape of a tip of an electrode after finishing welding. The welding system (A1) for performing submerged arc-welding comprises: a welding power source device (2) which has an inverter circuit (25) and suppli...

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Bibliographische Detailangaben
Hauptverfasser: NAGAMI KAZUTOSHI, KUSUHASHI YUMA, NARISADA YUKI, SAKAGUCHI YOSHINORI, MIYAJIMA YUICHI
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:Provided is a welding power source system for submerged arc-welding, which can stabilize the shape of a tip of an electrode after finishing welding. The welding system (A1) for performing submerged arc-welding comprises: a welding power source device (2) which has an inverter circuit (25) and supplies electric power; a wire feeding device (5) which feeds a welding wire; and a control device (1) which controls the welding power source device (2) and the wire feeding device (5). The control device (1) enables the wire welding power source device (2) to output AC currents during welding, enables the wire feeding device (5) to stop feeding the welding wire when finishing the welding, and enables the welding power source device (2) to output end-currents which are DC currents, where an end-current period of time from start to stop of output of the end-currents is set. [과제] 용접 종료 후의 전극의 선단의 형상을 안정시킬 수 있는, 잠호 아크 용접의 용접 전원 시스템을 제공한다. [해결 수단] 잠호 아크 용접을 행하기 위한 용접 시스템(A1)에 있어서, 인버터 회로(25)를 구비하고 전력을 공급하는 용접전원장치(2)와, 용접 와이어를 송급하는 와이어 송급장치(5)와, 용접전원장치(2) 및 와이어 송급장치(5)를 제어하는 제어장치(1)를 포함한다. 제어장치(1)는, 용접 중에는, 용접전원장치(2)에 교류 전류를 출력시키고, 용접 종료 시에는, 와이어 송급장치(5)에 용접 와이어의 송급을 정지시켜서, 용접전원장치(2)에 직류 전류인 엔드 전류를 출력시켜, 엔드 전류의 출력 개시부터 정지까지의 엔드 전류 기간을 설정하고 있다.