Method for simulating and preventing bending cracking of low-alloy structural steel based on DEFORM
A technology of structural steel and low alloy, applied in CAD numerical modeling, geometric CAD, special data processing applications, etc., can solve problems such as cracking
Pending Publication Date: 2021-10-08
NANJING IRON & STEEL CO LTD +1
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Problems solved by technology
[0006] Aiming at the problem of cracking in the bending process of existing low-alloy steel, the present invention provides a method for preventing low-alloy structural steel from bending and cracking based on DEFORM simulation. DEFORM-3D finite element software is used for low-alloy structural steel Carry out computer simulation research on the bending process, analyze the factors that affect the cold-bending performance of low-alloy structural steel, find the cause of cold-bending defects, and take appropriate measures to prevent steel plates from cracking during bending, which can effectively prevent steel plates from cracking during bending. cracking, reduce enterprise loss and improve product quality
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[0027] A method for preventing bending cracking of low-alloy structural steel based on DEFORM simulation, comprising the following steps:
[0028] The first step is to design the mold for the simulation experiment and establish the geometric model
[0029] The billet is processed into a sample with a length of 400mm, a width of 150mm, and a thickness of 15mm. According to the requirements of the GBT232-2010 standard on the roller bending device, the mold for the simulation experiment is designed, and the object model is established by using Solidworks. figure 1 .
[0030] The second step is to use the DEFORM pre-processor to set the simulation experiment process parameters, including plate thickness, reduction rate, bending angle and bending core diameter; the specific simulation process parameters are shown in Table 1.
[0031] Table 1 Simulation experiment process
[0032]
[0033] The third step is to use the material addition function that comes with DEFORM to add the...
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The invention discloses a method for simulating and preventing bending cracking of low-alloy structural steel based on DEFORM, which is characterized by comprising the following steps: designing a mold for a simulation experiment, and establishing a geometric model; setting simulation experiment process parameters; adding physical property parameters of the sample; carrying out grid division; defining the interaction relationship between the mold and the sample in the bending process; carrying out finite element numerical simulation on the steel plate bending process. According to the method, DEFORM-3D finite element software is adopted, computer simulation research is conducted on the bending process of the low-alloy structural steel, factors influencing the cold bending performance of the low-alloy structural steel are analyzed, reasons for cold bending defects are found, the steel plate is prevented from cracking in the bending process by adopting proper measures, the steel plate can be effectively prevented from cracking in the bending process, the enterprise loss is reduced, and the product quality is improved.
Description
technical field [0001] The invention relates to a method for preventing bending and cracking of steel materials, in particular to the prevention of bending and cracking of low-alloy structural steel. Background technique [0002] Low-alloy steel structural steel has good comprehensive properties, and has corrosion resistance, medium temperature resistance, low temperature resistance, good processing technology performance, welding process performance and other special properties, so it can meet the multi-level needs of various fields and effectively promote modernization. development of. In addition to good mechanical properties, low-alloy steel structural steel has various excellent special properties, which can meet the requirements of steel used in chemical petroleum, ships, boilers, pressure vessels, vehicles, bridges, railway construction, mines, etc. Some special properties of low-alloy steel structural steel will largely change the appearance of steel used in these i...
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Patent Timeline
Login to View More IPC IPC(8): G06F30/17G06F30/23G06F111/10G06F113/22G06F113/24G06F119/14
CPCG06F30/17G06F30/23G06F2111/10G06F2119/14G06F2113/22G06F2113/24
Inventor 胡其龙王道远侯清宇郭云侠
Owner NANJING IRON & STEEL CO LTD