비 중첩 구조 인코넬 용접 벨로우즈 개발

In this paper, it is a study on the development of welding bellows for roll control. Bellows development process was conducted in the order of the material selection, design, verification test. We were using the Inconel material with excellent strength, heat resistance, corrosion resistance. Bellows sample manufacturing process ; Left Membrane and Right Membrane press forming, Left Membrane and Right Membrane welded to make a CV(convolution), makes the core by welding multiple CV(convolution), Core heat treatment after the adapter Ring welding. Bellows sample verification procdures ; 1. Inspection of Left Membrane and Right Membrane. 2. Welding inspection of Left Membrane and Right Membrane. 3. Inspection of heat treatment. 4. Verification of roundness. The progress of the performance test of the bellows samples that have been produced in the above processre ; After fabrication a bellows performance test jig, leak test, moment test, life cycle test and thermal environment life cycle test was conducted.