Mathematical modeling evaluation method for tundish flow control effect

A tundish, numerical technology, applied in the field of digital-analog evaluation of tundish flow control effect, can solve the problems of inability to judge the tundish flow control effect, evaluate the quality of RTD curve, etc. significant effect

Inactive Publication Date: 2009-12-09
SHOUGANG CORPORATION
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The RTD curve is obtained by injecting tracer at the inlet of the tundish and monitoring the concentration of the tracer at the outlet with time, which can reflect the ratio of the piston area, the back-mixing area, the dead area and the short-circuit flow in the tundish. But so far, there has been no clear technical index to evaluate the pros and cons of the RTD curve, and it is impossible to directly judge the flow control effect of the tundish from the RTD curve

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mathematical modeling evaluation method for tundish flow control effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] 1. First, use fluid mechanics calculation software to establish a tundish model, set the tundish inlet as mass flow rate, the flow rate is 49.725kg / s, and the outlet as pressure outlet, the pressure is 1atm, and calculate the steady flow field of the tundish.

[0015] 2. After the tundish flow field calculation is stable, convert the steady-state model in the fluid calculation software to an unsteady-state model. At zero time, put a tracer at the entrance of the tundish for 1 second, and the flow rate of the tracer is 49.725kg / s.

[0016] 3. After the tracer is put in for 1 second, stop feeding the tracer, and monitor the time-varying curve of the tracer concentration at the outlet of the tundish at the same time. When all the tracer has flowed out, the calculation stops, and the tracer residence time distribution RTD is obtained. curve;

[0017] 4. Process the obtained RTD curve and perform dimensionless RTD curve conversion;

[0018] 5. Evaluate whether the obtaine...

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

No PUM Login to view more

Abstract

The invention is a mathematical modeling evaluation method for tundish flow control effect, comprising the following steps: adopting numerical technique to simulate and track the characteristic value of residence time distribution (RTD) curves of a tracer agent to evaluate the quality on the tundish packet type and a flow control device; establishing evaluation standard for RTD curve quality; the tundish flow control effect being better when dimensionless concentration at peak value of the RTD curve is more than 1, and the dimensionless time corresponding to the peak value is more than 0.75. The method provided in the invention is suitable for evaluating the quality of the tundish packet type and the flow control device, can evaluate the metallurgical effect of the tundish rapidly and effectively, and plays a leading role in optiming and revamping the tundish packet type and the flow control device in site. The method also can be applied to the analysis of water modeling experiment results.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and in particular relates to a digital-analog evaluation method for the flow control effect of a tundish, which judges the tundish type and the flow control device according to the quantization of the peak value of the tracer residence time distribution (RTD) curve The method of pros and cons is especially suitable for judging the RTD curve calculated by using numerical technology, and then guiding the optimal design of the tundish type and flow control device. This technology is also suitable for the analysis of water model experiment results. Background technique [0002] With the development of continuous casting technology and the continuous improvement of the quality requirements of the slab, the role of the tundish cannot be ignored. In addition to stabilizing the injection flow and realizing continuous casting in multiple furnaces, it is more important to promote the floating of ...

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
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18
Inventor 王凤琴张利君薄凤华胡雄光解家英王卫华宁林新姜中行刘建明袁辉
Owner SHOUGANG CORPORATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap