Square billet center macrosegregation analysis method

A technology of macro segregation and analysis method, which is applied in the field of analysis and evaluation of billet center macro segregation, which can solve problems affecting detection, reliability and guidance of analysis results, and achieve the effect of improving representativeness and reducing deviation

Active Publication Date: 2020-08-14
INST OF RES OF IRON & STEEL JIANGSU PROVINCE +2
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional transverse and longitudinal sample cutting methods often deviate from the segregation point or line, or can only be limited to reflect the degree of segregation in the two-dimensional plane. Plane) will inevitably affect the reliability and guidance of detection and analysis results

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
  • Square billet center macrosegregation analysis method
  • Square billet center macrosegregation analysis method
  • Square billet center macrosegregation analysis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] 1. Continuous casting slab sampling:

[0031] Cut the continuous casting billet section with a length of 350mm on the billet continuous casting billet to be analyzed (such as figure 1 As shown), cut low-magnification samples on the continuous casting slab section, and keep a distance of 20mm between the sample cutting area and the casting slab cutting area, avoiding the heat-affected zone of flame cutting.

[0032] Sampling Sampling along the drawing direction. For sampling in the drawing direction, the present invention adopts cutting and sampling on a vertical plane with an included angle of 8° with the central longitudinal section of the billet, and the sample length is 200 mm long, such as figure 2 , image 3 , Figure 4 shown.

[0033] 2. Sample processing and storage:

[0034] Before pickling the low-magnification tissue, mill the cut surface (test surface) so that the roughness of the test surface of the sample is Ra≤0.8μm, and there should be no wear marks...

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

PropertyMeasurementUnit
lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a square billet center macrosegregation analysis method, and belongs to the technical field of metallurgical analysis. The method comprises the following steps: carrying out sampling, sample processing, macroscopic examination and drilling chemical analysis on a square billet continuous casting billet by using a vertical plane forming an included angle with the central longitudinal section. According to the invention, the vertical sample cutting method forming a certain included angle with the central longitudinal section is creatively applied to the sample preparationmethod in the center macrosegregation analysis process of the square billet continuous casting billet; the deviation of a casting blank center segregation analysis result caused by a sample cutting position factor can be reduced, the accuracy of casting blank center segregation condition analysis is improved, and accurate reference information is provided for casting blank quality monitoring or process improvement.

Description

technical field [0001] The invention belongs to the technical field of detection and analysis of continuous casting slabs, in particular to an analysis and evaluation method for macro segregation in the center of square slabs. Background technique [0002] In the continuous casting process, the uneven distribution of components caused by slab segregation will have an adverse effect on the performance of the product. Due to the segregated crystallization and dendrite solidification characteristics of molten steel, central segregation defects will inevitably occur in the centerline region of the final solidification of the slab due to solute accumulation and difficulty in liquid steel flow feeding. So far, there is no way to completely eliminate segregation. In production, the segregation degree of continuous casting slab is an important index for inspecting the quality of slab. The analysis of slab segregation distribution has good guiding value for continuous casting proces...

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): G01N33/204G01N1/04G01N1/32
CPCG01N33/204G01N1/04G01N1/32
Inventor 麻晗冯孔方邹长东李强李解
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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