725 daws qhov teeb meem ntawm ncej Dimensional raug tswj ntawm qhov chaw nres tsheb tshawb fawb Abyss thiab sau cov qhov sib txawv hauv tsev

725 daws qhov teeb meem ntawm cov ncej qhov tseeb qhov tseeb tswj ntawm Abyss Science Experiment Chaw nres tsheb thiab ua tiav qhov sib txawv hauv tsev

Recently, the Eighth Research Laboratory completed the development and load-bearing test of the first set of the titanium alloy frame of the abyss-level in-situ scientific experiment station in China, marking that Institute 725 has become the first domestic in-situ scientific experiment station frame development and test unit. The construction technology represents the highest level of such products in China and fills the gap in the titanium alloy frame manufacturing field of my country's subsea experimental station.

duab

Daim duab: Bearing test ntawm lub ntsiab ncej ntawm lub abyss -qib submarine nyob rau hauv -situ scientific sim chaw nres tsheb

      The abyss-level subsea in-situ scientific experiment station can support continuous subsea scientific research missions for up to six months. The titanium alloy frame is the supporting framework of the entire experimental station. It bears the weight of the entire experimental station during the process of recovery, mother ship loading, and sinking on the seabed. Frame manufacturing is an important part of the entire project.

     The frame of the titanium alloy experimental station was developed for the first time in China. The frame bears large and complex loads under operating conditions. At the same time, the structure has dense welding seams, low structural rigidity, and is prone to welding deformation. Therefore, the technical index requirements are very strict, all the main welds are fully penetrated, the overall structure dimensions are accurate to the millimeter level, and the upper, middle and lower three-layer structures are accurately butted. In the frame development process, it is necessary to not only satisfy the structural weld strength, but also control the structural welding deformation.

     This project successfully broke through a number of key technologies such as high-efficiency welding of profiles, overall heat treatment, and deformation control of complex welded structural parts. In the case of full penetration of the main body of the frame, the welding deformation of the frame as a whole is effectively controlled, and the technical index requirements are met. In the end, the Eight Chamber completed the originally planned 10-day deadweight ultimate load test of the experimental station in only 3 days, and obtained the strain value and deformation of the key parts. Through experiments, the design reliability and manufacturing quality were verified, the structural strength and stability of the frame were checked, and a solid foundation was laid for the stable operation of the subsequent experimental station.