알루미늄 튜브(A3003, A6061)의 네킹 가공에 따른 두께 변화에 관한 연구

Abstract

The tube necking process increases the thickness of the material, and some of the tube necking productsrequire cutting on the inside of the formed product as a post-process. In order to prevent over-cutting or un-cuttingdue to increased thickness during cutting, it is necessary to know in advance the increase in thickness afterforming. Therefore, in this study, the thickness change according to the tube necking was observed. Aluminum3003-F and 6061-O were used for the materials used in the experiment, and necking was carried out up to 50%of the outer diameter of the tube through five processes. The two materials were formed under the same conditions,and the thickness of three points was observed in each process. In addition, the thickness increase of the twomaterials was compared, and the trend of thickness increase according to the cumulative necking ratio wasobserved. As a result of the experiment, both materials had the smallest thickness at the end of the formed product. In addition, as a result of comparing the thickness measurement values of the two materials, the maximumdifference was 0.1mm, indicating that there was no difference in thickness between the two materials.