Research On The Manufacturing Technology Of Automotive Double-wall Curly Brazed Tubes

Automotive Double-wall Curly Brazed Tubes are pretty popular in the automotive industry due to the superior performance since they were appeared in the market. They are mainly used in automobile braking systems, as the key components of the constraints of vehicle safety performance, their performance have a direct impact on vehicle safety. Therefore, the study of processing technology in Automotive Double-wall Curly Brazed Tubes has important practical significance. China's vehicle pipe industry has fierce competition, since the foreign manufacturer of Automotive Double-wall Curly Brazed Tubes flood into China, some domestic low-end vehicles rise, and the increase in price of international and domestic steel, the improvement of product line efficiency and production performance is the inevitable choice for sustainable development of enterprises. Therefore, it is highly significant to conduct researches on the manufacturing technology of Automotive Double-wall Curly Brazed Tubes.Based on the Automotive Double-wall Curly Brazed Tubes, their manufacturing technology is studied. In this paper, the major research contents are as follows:On a basis of studying on the present situation of domestic and foreign Auto-motive Double-wall Curly Brazed Tubes. The basic ingredients of production line and manufacture process are analyzed. It is concerned with the manufacturing process, the reasonable form-solution, the basic layout types of formation machinery and the cri-tical process parameters of Automotive Double-wall Curly Brazed Tubes.More thorough analysis on the key equipment of production line of Automotive Double-wall Curly Brazed Tubes is conducted, the operation principle and character-istics are studied, the key control parameters are analyzed. Thus, a foundation is provided for establishing the forming models and controlling production line.The finite element models of Automotive Double-wall Curly Brazed Tubes are established. The stress-strain characteristics of divided edge forming processes and its influence on processing quality are simulated using explicit code LS-DYNA based on 3D elastic-plastic finite element method, and the strain state and stress distribution are analyzed. Thus, a foundation is provided for optimizing the forming structure of Automotive Double-wall Curly Brazed Tubes. The coordination control of key equipment action is studied, including confirming the whole production line's control scheme of Automotive Double-wall Curly Brazed Tubes, and designing the hardware platform and software of the information integrated control.The study makes the enterprises to reform the production line and its manufacturing technique of Automotive Double-wall Curly Brazed Tubes, aiming at improving its manufacturing technology and enhancing the competition of enterprises.