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The Research of the Electrolytic Nickel Board’s Cutting Force and Shear Stress

Author: ZhangGuanLan
Tutor: SunDongMing
School: Kunming University of Science and Technology
Course: Mechanical Design and Theory
Keywords: electrolytic nickel board Q235 steel sheet cutting board machine FEM cutting parameters
CLC: TG339
Type: Master's thesis
Year: 2010
Downloads: 32
Quote: 0
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Abstract


Cutting board machine is widely used in enterprises, to cut metal board to proper shape or specified width. With higher efficiency and shearing convenience, cutting board machine is more popular than the other shearing machine.In the electrolytic nickel board’s factory, not only making into hook by thin nickel board (cathodal board), but also wraping thick board as commodity, both of them need to be cut at first. But nowadays, the design of cutting board machine about the electrolytic nickel board is not successful, so in fact, the factory is always used the normal cutting board machine, which is used for cutting carbon-steel board. There are so many differences in material property between the electrolytic nickel board and the carbon-steel board. And it happened that some trouble and accidents, such as broken of blade and its adapter. It discovered that it’s more difficult to cut the electrolytic nickel board than the carbon-steel board. Because when cutting the thin board, it is not easy to adjust the proper cutting clearance and it has the large cutting force.While cutting the thick board, cutting force is larger than former. Therefore, it is necessary to research the cutting force and shear stress about the electrolytic nickel board.The shearing process of metal board is very complicated since the deformation is focused on the small zone of the metal and the process is plastic or non-linear, and ended with fracture occurrence. The dissertation introduces the theory of shearing and its research or analysis of shear stress and cutting force. Especialy the article analyzed various factors affecting static hydraulic pressure in the area of deformation. And we can get the idea that reduced static hydraulic pressure is good to the shearing process. Also, the article modified the cutting force formula of the tilted blade cutting board machine and analyzed thrusting force of side when the cutting process.It’s convenient to simulate the shearing process by FEM method. (It’s included grid remesh and grid subdivision in the part window). The mainly part of the dissertation demonstrates the Rigid-Plastic working theory and uses the software of Deform-3D to simulate the cutting force and shear stress, which affected by shearing convenience and board thickness. At first the paper simulated the Q235 steel sheet cutting by FEM at the cutting parameters’condition (shearing convenience and board thickness). Thanks to this the cutting force and shear stress are so corrected with the cutting theory. So we can also use the Deform-3D to simulate the electrolytic nickel board. The last part of the paper is experiment. Form this part we can test the FEM and the analysis of theory are nearly correct with the experiment.In a word, the article is useful to propose some new technologies of shearing about the electrolytic nickel board and Q235 steel sheet. Of course, there are some details and other work of cutting be done in the future.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Non-ferrous metal rolling
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