A Prediction Method of Composition Segregation Degree in Casting Process of Complex Structure Castings
A complex structure and prediction method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the degree of segregation cannot be determined, the final solid phase composition distribution cannot be determined based on it, and it cannot guide the casting of large-scale complex structural castings. Production and other problems, to achieve the effect of a wide range of applications
Active Publication Date: 2017-01-25
ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, the existing micro-segregation models of solute distribution are all based on the study of the change of solute concentration with the increase of solid phase fraction during solidification, which can only represent the interface concentration and solid phase fraction f S The functional relationship of the final solid phase cannot be determined based on this, and the dynamic parameter of the solid phase fraction must be considered, but it cannot be determined for different structural parts of a large complex structural part. The degree of segregation under the joint action of various factors , unable to guide the casting production of large complex structural castings
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
[0045] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0046] The determination of the micro-segregation degree judgment index MSI (Micro-segregation Index) in this embodiment is based on the following considerations.
[0047] With the help of the widely used Buckinghamπ dimensionless analysis theory in mathematical physics, the dimensionless analysis of solute distribution in the solidification process is carried out. Based on the research on the diffusion flux of liquid phase and solid phase solute atoms on both sides of the solid-liquid interface, ...
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
Login to View More Abstract
The invention provides a method for predicating the ingredient segregation degrees in the casting process of a complex-structure casting. The method includes the steps of (1) calculating to obtain thermophysical parameters of alloy through a thermophysical parameter calculating module of commercialized JMatPro software, (2) carrying out analogue simulation on the casting filling and solidifying processes of the complex-structure casting through ProCAST finite element software, and obtaining temperature field data of various parts of the casting, (3) calculating secondary dendrite arm spacing values of the structural parts of the casting through a secondary dendrite arm spacing calculating module built in the ProCAST software, and (4) calculating MSIs of the structural parts of the complex-structure casting, and judging the micro-segregation degrees of the structural parts of the casting according to the MSIs. According to the method, the finite element software and thermodynamic calculation software are used, the casting practice is combined, the micro-segregation degrees of solute elements of the structural parts of the complex-structure casting are effectively predicted, and the application range is wide.
Description
technical field [0001] The invention relates to the technical field of component segregation analysis in the iron and steel industry, in particular to a method for predicting the component segregation degree in the casting process of castings with complex structures. Background technique [0002] Composition segregation is an inherent characteristic of molten alloy solidification. When the solubility of the solute element in the solid phase is less than its solubility in the liquid phase, the solid-liquid interface will exclude the solute from the liquid phase; and when the solubility of the solute element in the solid phase is greater than that in the liquid phase, the solute Diffusion from the liquid phase to the solid phase will result in a solute-poor region at the front of the solid-liquid interface. Due to the redistribution of solute during the alloy solidification process, the composition of the alloy after solidification is not uniform, which is called composition ...
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): G06F17/50
Inventor 韩延峰凌李石保王俊康茂东孙宝德
Owner ZHONGCHAO HANGYU INVESTMENT CASTING S&T CO