가스혼합비에 따른 용접부의 기계적 특성에 관한 연구 = A Study on the Mechanical Properties of Weld Zone with the Gas Mixture Ratios

다국어 초록 (Multilingual Abstract)

In this Study, mixes gas(CO2 100% : Ar 0%, CO2 75% : Ar 25%, CO2 50% : Ar 50%, CO2 25% : Ar 75%, CO2 0% : Ar 100%) was used as shielded gas and the welding was conducted by solid wire or flux cored wire depending on the ratio of mixed gas. On the basis of the different welding condition, the various mechanical characteristics were investigated through the methods such as tension test, impact test. The strength of weld zone is affected by the complex factors such as welding condition, properties and state of base material, and it is also destructed by the defect of weld zone and the growth of micro structures which raise after welding.

목차 (Table of Contents)

• Ⅰ. 서론
• Ⅱ. 실험방법
• 1. 재료
• 2. 용접조건
• 3. 기계적성질 및 조직
• Ⅲ. 실험결과 및 고찰
• 1. 용접특성 비교
• 2. 인장시험
• 3. 경도시험
• Ⅳ. 결론