Method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams

A ternary phase diagram and inclusion technology, which is applied in 2D image generation, image data processing, 3D modeling, etc., can solve the problem that the cloud image coverage cannot be correctly represented, the reading of the quantity is affected, the inclusion size is not accurate, Intuitive expression and other issues

Inactive Publication Date: 2016-12-07
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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  • Application Information

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Problems solved by technology

The method disclosed in the Chinese patent "A Method for Representing the Quantity of Inclusions of Arbitrary Composition in Ternary Phase Diagram" (publication number CN 104182615 A) can only express the composition distribution of inclusions, and cannot accurately and intuitively measure the size of inclus...

Method used

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  • Method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams
  • Method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams
  • Method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams

Examples

Experimental program
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Embodiment 1

[0025] (1) In this example, SC82AM steel was used to prepare metallographic samples, and the inlaid metallographic samples were standardized using an automatic grinding machine;

[0026] (2) Put the sample processed in step (1) into the scanning electron microscope, and carry out statistics on the surface distribution of inclusions in combination with automatic inclusion analysis software. The Minimum Size is set to 1 μm, and the Maximum Size is set to 225 μm;

[0027] (3) Screen the data obtained from statistics on the surface distribution of inclusions, according to CaO-Al 2 o 3 - SiO 2 Ca-Si-Al type inclusions are screened out from the series inclusions, and converted into CaO and SiO according to the normalized treatment of weight percentage 2 、Al 2 o 3 ;

[0028] (4) Filter data with 1 μm as the length interval, specifically: 1 μm ≤ D < 2 μm, 2 μm ≤ D < 3 μm, 3 μm ≤ D < 4 μm, 4 μm ≤ D < 5 μm, 5 μm ≤ D < 6 μm, 6 μm ≤ D < 7μm, 7μm≤D<8μm, 8μm≤D<9μm, 9μm≤D<10μm, D≥10μm;...

Embodiment 2

[0031] This embodiment uses SWRS87Mn steel to prepare metallographic samples, and the steps and operation methods adopted are the same as those of the above-mentioned embodiment 1, such as image 3 As shown, grayscale processing is done in this document.

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Abstract

The invention relates to a method for representing inclusions of different sizes, in tire cord steel, in ternary phase diagrams. The method comprises the steps of screening data obtained by surface distribution statistics of the inclusions, determining three main components of the inclusions in a sample, and performing normalization processing by weight percentage; then classifying the inclusions by size; and finally projecting the inclusions of the different sizes into the ternary phase diagrams in sequence, filling the ternary phase diagrams with different colors, and superposing the ternary phase diagrams in sequence to form a two-dimensional diagram and a three-dimensional diagram. The ternary phase diagrams of the inclusions of the different sizes are superposed in sequence and filled with the different colors to form a three-dimensional ternary phase diagram, so that distribution situations of the different sizes of the inclusions can be accurately and visually represented, the larger the numerical value of longitudinal coordinates is and the larger the sizes of the inclusions are, and the higher the point density is and the larger the number of the inclusions is; and by observing the ternary phase diagrams, whether the components of the inclusions fall into a region with good deformation capability or not can be known, thereby providing a favorable basis for a production process of the tire cord steel.

Description

technical field [0001] The invention relates to a method for expressing inclusions of different sizes in a ternary phase diagram in cord steel, and belongs to the field of inclusion analysis of metal materials. Background technique [0002] Steel cord is the main material of car radial tires, which acts as a skeleton support for the carcass and is used to improve the safety, wear resistance and fatigue resistance of the tire. One of the main reasons for the slow development of steel cord products in my country is the restriction of the quality of wire rods. Generally speaking, the cord steel needs to be pulled to a diameter of less than 0.38mm, and inclusions are one of the main causes of broken wires. Therefore, the size, quantity, and deformability of inclusions in the wire rod need to be strictly controlled. [0003] Cord steel usually uses Si-Mn to deoxidize molten steel, and the inclusions are mainly MnO-Al 2 o 3 -SiO 2 and CaO-Al 2 o 3 - SiO 2 Tie. [0004] Whe...

Claims

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Application Information

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IPC IPC(8): G06T11/20G06T17/00
CPCG06T11/206G06T17/00
Inventor 周阳钱刚阮小江许晓红白云
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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