Pipe and pipe plate welded joint fatigue test sample and tool and preparation method thereof
A technology for tube-sheet welding and fatigue specimens, applied in the preparation of test specimens, etc., can solve the problems of low coaxiality, failure of fatigue test data, unstable clamping of fatigue specimens, etc., to achieve stability, improve The effect of coaxiality
Pending Publication Date: 2021-09-21
SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD
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Problems solved by technology
[0003] The purpose of the present invention is to provide a fatigue sample of the welded joint of the pipe tube plate and its tooling and preparation method, to solve the problems of unstable clamping of the fatigue sample, low coaxiality, and failure of fatigue test data
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[0024] The solution proposed by the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and all use imprecise scales, which are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention. In order to make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. condition, so it has no te...
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Abstract
The invention provides a pipe and pipe plate welded joint fatigue test sample and a tool and a preparation method thereof. The pipe and pipe plate welded joint fatigue test sample comprises a pipe, a first pipe plate and a second pipe plate. The first pipe plate and the second pipe plate are welded to the two ends of the pipe respectively, and the same welding process is adopted for two welding seams. The two ends of the tube are respectively sealed and welded with the tube plate, the welding forms at the two ends are the same, and the fracture test data at any end of the fatigue test are effective. Therefore, when threads are machined on the sample, the unmachined parts of the tube plates at the two ends can be fixed at the same time, the threads at the two ends are machined under the same standard, and the coaxiality of the sample is greatly improved. According to the invention, the fatigue clamping stability and the coaxiality required by a fatigue test standard can be realized, and data failure caused by fatigue fracture formed at the position due to welding of an additional tool and a sample is not needed.
Description
technical field [0001] The invention relates to the technical field of nuclear power steam generators, in particular to a fatigue sample of a tube-tube-sheet welded joint, tooling and a preparation method thereof. Background technique [0002] In the fourth-generation nuclear power part, the new reactor type container and the traditional pressurized water reactor evaporator include tube and tube sheet structures. The manufacturing process of the tube and tube sheet structure is: tube sheet drilling, tube introduction, positioning expansion, sealing and welding, manufacturing After completion, the tube and tube sheet structure is as follows figure 1 shown. In the service of the product, the weld of the tube and tube plate bears uneven force under high temperature conditions, and fatigue damage is a common failure mode of the welded joint in the service process. Due to the special structure of the tube-tube-sheet welded joint, it is impossible to process the sample according...
Claims
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Login to View More IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 孟令奇张茂龙吕映宾孟博毓罗吾希孙志远罗庆王翔毅
Owner SHANGHAI ELECTRIC NUCLEAR POWER EQUIP CO LTD