스피닝 공정을 이용한 배관용 일체형 스터브엔드 제조방법 개발에 대한 연구

Abstract

The spinning method was used for developing the connection component of pipe flanges. Generally lab joint is manufactured by welding that pipe is jointed with flange plate. but this method requires large amounts of time and money due to the tube and the thick plate production of individual through the process

(1) tube with constant thickness.

(2) forming of the stubend thickness greater than the thickness of the tube.

(3) making internal rectangular shape between mating part of flange and pipe.

(4) manufacturing the rounding part to the desired dimensions.

(5) optimization of the manufacturing step. So the finite element analysis are carried out. to review the spinning process for stubend using ALE(Arbitrary Lagrangian – Eulerian) method. ALE finite element method is used to understand and analyze the element rotation problem. FE simulation was performed by the commercial code Forge V2011. A good agreement between the predicted and actual test model. The key technology is that flange thickness is not thinner than initial pipe. In addition, it also form a rectangular part and round part. The roller for multi-step spinning is designed by finite element analysis, and the product is manufactured successfully by experiment.

cutting, welding and finishing. The defects in the process may occur due to thermal deformation and mistake of operator. In order to solve this problem, the manufacturing method using spinning process of integrated stubend is developed. The spinning method in this study is an incremental forming process with low cost and environmentally friendliness. The purpose of this paper is to study how to manufacturing the stubend from initial tube by spinning process. The stub end of the manufacturing conditions were as follows