A method for predicting the effect of tempering on the ultimate load of vanadium-added steel cylinder joints
A technology of ultimate load and vanadium-added steel, applied in the direction of instruments, design optimization/simulation, calculation, etc., can solve the problems that cannot be used to guide lightweight design, do not consider the evolution of material strength, and inaccurate prediction results, etc., and achieve the cost of implementation low, high reliability, and high prediction accuracy
Active Publication Date: 2022-04-19
ZHEJIANG UNIV
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a method for predicting the impact of tempering on the ultimate load of vanadium-added steel barrel joints, and to solve the problem caused by the existing method because the material strength evolution during the tempering heat treatment process of the barrel joints is not considered. Inaccurate prediction results and defects that cannot be used to guide lightweight design
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0051] With reference to the accompanying drawings, figure 2 The example shown is the implementation object, according to the figure 1 Shown flow process, the present invention is described further.
[0052] figure 2 The example shown is a 2.25Cr-1Mo-0.25V steel plate-welded cylinder joint, its specific dimensions are: inner diameter 2400mm, outer diameter 2704mm, length 1700mm. The manufacturing process of the barrel joint is as follows: image 3 As shown, the details are as follows: First, the 2.25Cr-1Mo-0.25V steel plate needs to be preheated to 650°C; then, it is sent to the plate rolling machine, and the rolling is completed within a few minutes to obtain a semi-finished tube section; then , the semi-finished cylinder section was tempered at 705°C for 8 hours to obtain the finished cylinder section. It is worth noting that tempering heat treatment will reduce the strength of 2.25Cr-1Mo-0.25V steel, thereby weakening the ultimate bearing capacity of the barrel joint ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for predicting the influence of tempering on the ultimate load of a vanadium-added steel cylinder section. This method uses pre-stretching and tempering to approximately replace the real manufacturing process of vanadium-added steel barrel joints, so as to realize the simulation of the state evolution of the material in the barrel joint during the real manufacturing process; Based on the test data, the constitutive model of vanadium-added steel considering the influence of manufacturing residual is established by using the data-driven method; at the same time, the finite element is used to simulate the forming of the barrel section to obtain the residual plastic strain distribution in the barrel section; further, combined with the constitutive Model, to obtain the strength distribution evolution of the material in the barrel joint during the manufacturing process; finally, use the plastic limit analysis technology to compare the ultimate load of the barrel joint before and after tempering, so as to realize the prediction of the impact of tempering on the ultimate load of the vanadium-added steel barrel joint . This method has the advantages of strong feasibility, low implementation cost and high reliability, and can provide a theoretical basis for the lightweight design of load bearing parts.
Description
technical field [0001] The invention relates to the field of ultimate load prediction of bearing parts, in particular to a method for predicting the influence of tempering on the ultimate load of vanadium-added steel cylinder joints. Background technique [0002] The ultimate load is one of the key indicators for evaluating the bearing capacity of a bearing. Lightweight is the main development trend of the current bearing parts. Accurately predicting the ultimate load has important guiding significance for the lightweight design of load bearing parts. For a certain material, the ultimate load of the bearing part mainly depends on the strength value and strength distribution of the material in service. It is worth noting that both are related to the manufacturing process of the carrier. Among them, the manufacturing process involves the forming link and the heat treatment link in turn. In general, the carrier is formed first and then heat treated to restore the toughness ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/08G06F119/14
CPCG06F30/20G06F2119/08G06F2119/14
Inventor 陈志平李尤马赫缪好
Owner ZHEJIANG UNIV