내마모판의 광폭 경화육성 용접비드 형성을 위한 트윈토치 CMAW 공정개발 (Development of Twin Torch Compound Metal Arc Welding Process to Form for Wide Hardfacing Bead of Wearplate)

서지정보

· 발행기관 : 대한용접접합학회
· 수록지 정보 : 대한용접접합학회지 / 26권 / 2호 / 50 ~ 54페이지
· 저자명 : 조상명, 김성덕, 황규민

초록

The wearplate with Cr-C has been used in condition of severe abrasion. Recently, the demand of wearplate
made by hardfacing with Cr-C has increased in the world, but it is lack of supply and expensive due to low
productivity. CMAW (Compound Metal Arc Welding) is very useful process of several welding methods to
make wearplate.
In this paper, twin torch CMAW to use twin torch at the same time was developed to improve productivity
and to ensure quality of wear plate. When the distance between two touches was smaller than 30mm, arc
blow was occurred. However when the distance was larger than 35mm, there was no arc blow any more.
If the oscillation path of each torch was overlapped together, the melt through at the overlapped zone was
occurred due to concentrated heat input in substrate. On the other hand, the turning point of each torch
was open more than 5mm, separated bead was generated. Therefore twin torch CMAW which has adequate
conditions was able to make wearplate having flatter surface at the bead connection than single torch.

영어초록

The wearplate with Cr-C has been used in condition of severe abrasion. Recently, the demand of wearplate
made by hardfacing with Cr-C has increased in the world, but it is lack of supply and expensive due to low
productivity. CMAW (Compound Metal Arc Welding) is very useful process of several welding methods to
make wearplate.
In this paper, twin torch CMAW to use twin torch at the same time was developed to improve productivity
and to ensure quality of wear plate. When the distance between two touches was smaller than 30mm, arc
blow was occurred. However when the distance was larger than 35mm, there was no arc blow any more.
If the oscillation path of each torch was overlapped together, the melt through at the overlapped zone was
occurred due to concentrated heat input in substrate. On the other hand, the turning point of each torch
was open more than 5mm, separated bead was generated. Therefore twin torch CMAW which has adequate
conditions was able to make wearplate having flatter surface at the bead connection than single torch.

참고자료

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