Method and device for evaluating anti-concavity of metal thin sheet
A metal sheet and evaluation device technology, which is applied to measurement devices, strength characteristics, instruments, etc., can solve the problems of lack of test evaluation methods for the anti-concave performance of metal sheets, and the inability to meet the use requirements of metal sheets, and achieve the effect of increasing safety.
Inactive Publication Date: 2006-06-07
BAOSHAN IRON & STEEL CO LTD +1
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Problems solved by technology
There is currently a lack of standardized test and evaluation methods for the evaluation of the anti-dent performance of metal sheets. The metallurgical industry and the automobile industry are in the exploratory stage. At present, there is no special method and device for evaluating metal sheets. The research on it is limited to a certain framework. Manual loading, and then analyzing the force value and displacement value records of the force sensor and dial indicator, cannot meet the actual use requirements of the metal sheet
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Embodiment Construction
[0066] Such as figure 1 As shown, the device of the present invention includes: comprising: a device main body, including a portal frame structure for fixing the whole device, a moving crossbeam 4, a test piece bracket 9, and a pressure plate 8 is arranged on the test piece bracket 9 for testing The fixing effect of part 7; The loading mechanism can be a hydraulic servo mechanism, including a loading oil cylinder 2 that provides static load; The measurement control mechanism includes a load sensor 5, a grating displacement sensor 12; Pressure head 6;
[0067] The moving beam 4 spans and slides on the vertical bars on both sides of the portal frame. The loading cylinder 2 is placed on the moving beam 4. The indenter 6 is installed under the moving beam 4 and moves with the moving beam 4. The test piece 7 is placed on the indenter. 6, the grating displacement sensor 12 for measuring the displacement of the indenter 6 is set on the vertical bar on one side of the test piece, and ...
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Abstract
The invention relates to a method and device for evaluating the dent resistance of a thin metal plate. The device includes: a device main body, including a portal frame structure for fixing the entire device, a moving beam, a test piece bracket and a test piece clamping structure; a loading mechanism, It includes a loading oil cylinder that provides static load; the measurement control mechanism includes a load sensor and a displacement sensor; the pressure head; the moving beam spans and slides on the vertical bars on both sides of the portal frame, and the loading oil cylinder is placed on the moving beam. The head is installed under the moving beam and moves with the moving beam, the test piece is set under the indenter, the displacement sensor is set on the vertical bar on one side of the test piece, and the load sensor is located between the indenter and the moving beam. The method includes static evaluation and dynamic evaluation. In static state, the static load exerted by the indenter on the specimen and the resulting displacement of the indenter. In dynamic state, the indenter exerts dynamic energy on the specimen through free fall and the resulting displacement of the specimen. The amount of deformation was measured to measure the dent resistance of the test piece.
Description
technical field [0001] The invention relates to a method and a device for evaluating the dent resistance of a thin metal plate. Background technique [0002] The evaluation of the dent resistance of the metal sheet is to evaluate the ability of the metal sheet to resist dents after being bent and deformed under an external load. There are two main parameters for dent resistance evaluation, load and displacement. There are two main types of evaluation methods, static evaluation and dynamic evaluation. Static evaluation refers to the evaluation of the anti-dent performance, load and displacement of the metal sheet under relatively static conditions. Dynamic evaluation refers to the evaluation under the state of motion. Evaluation of the impact energy and displacement to dent a sheet metal can withstand. The thin metal plate undergoes elastic and plastic deformation under the action of an external load, and the ability of the specimen to resist the elastic deformation of the ...
Claims
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IPC IPC(8): G01N3/307
Inventor 汪承璞李东升吴华周贤宾俞宁峰吕晓东常和生
Owner BAOSHAN IRON & STEEL CO LTD