阅读说明：本技术 一种基于炼钢工艺进行夹杂物分析的方法 (Method for analyzing inclusions based on steelmaking process ) 是由 皮晓宇 张国滨 于 2019-09-26 设计创作，主要内容包括：本发明公开一种基于炼钢工艺进行夹杂物分析的方法,包括如下步骤：测量待测样品,获得待测样品的数据信息；根据炼钢工艺建立夹杂物标准数据库；将所述数据信息与所述夹杂物标准数据库进行对比,得到夹杂物测量结果并形成文件保存。本发明的整个过程使用软件程序控制,测量结果使用程序自动计算生成,精确、全面、具体,有助于炼钢工艺的改进和创新。(The invention discloses a method for analyzing inclusions based on a steelmaking process, which comprises the following steps: measuring a sample to be detected to obtain data information of the sample to be detected; establishing an inclusion standard database according to a steelmaking process; and comparing the data information with the inclusion standard database to obtain an inclusion measurement result, and forming a file for storage. The whole process of the invention is controlled by a software program, and the measurement result is automatically calculated and generated by the program, so that the invention is accurate, comprehensive and specific, and is beneficial to the improvement and innovation of the steelmaking process.)

1. A method for analyzing inclusions based on a steelmaking process is characterized by comprising the following steps:

measuring a sample to be detected to obtain data information of the sample to be detected;

establishing an inclusion standard database according to a steelmaking process;

and comparing the data information with the inclusion standard database to obtain an inclusion measurement result, and forming a file for storage.

2. The method for inclusion analysis based on a steelmaking process of claim 1, further comprising the steps of:

and supplementing the inclusion measurement result to the inclusion standard database to form updating of the inclusion standard database.

3. The method for analyzing inclusions based on a steelmaking process as claimed in claim 1, wherein the step of measuring the sample to be measured and obtaining the measurement result in the sample to be measured includes the steps of:

preparing the sample to be detected;

adjusting working parameters and observing the sample to be detected in the current view range to acquire the information of the sample to be detected in the current view range;

calculating the vision field number of the sample to be measured according to the actual size of the sample to be measured;

and measuring the samples to be measured in all the vision field ranges one by one, and acquiring the information of the samples to be measured in all the vision fields.

4. The method of claim 3, wherein the preparing the sample to be tested comprises the steps of:

polishing the sample to be detected on the water abrasive paper of a grinding machine, and grinding off the surface deformation layer of the sample to be detected until the surface of the sample to be detected is flat;

and polishing the ground sample to be detected to enable the ground surface to be a smooth mirror surface without scratches.

5. The method of claim 3, wherein the operating parameters include operating parameters of an electronic scanning mirror, sample stage configuration, image scanning parameters, image processing parameters, and X-ray acquisition parameters.

6. The method of claim 3, wherein the information about the sample includes the size, size and classification of inclusions in the sample.

7. The method of claim 1, wherein the creating of the inclusion criteria database based on the steelmaking process comprises the steps of:

inputting steelmaking process information;

analyzing and concluding the source of inclusions in the steel according to the deoxidation mode in the steelmaking process;

and classifying according to the chemical composition, the size form and the properties of the inclusions to form the inclusion standard database.

8. The method of any one of claims 1 to 7, wherein the measurement of inclusions comprises at least one of: average element composition of inclusions, particle size distribution diagram of inclusions, particle arrangement diagram of inclusions, national standard information table form classification method of inclusions, national standard information table element classification method of inclusions, element composition diagram of inclusions and size distribution ternary phase diagram of inclusions.

Technical Field

The invention relates to the technical field of smelting, in particular to a method for analyzing inclusions based on a steelmaking process.

Background

The steel industry in China is always in a high-speed development stage, along with the rapid upgrading and development of the industries in various fields of national economy in China, the requirements on the steel industry are not the yield, but the variety, quality and performance, and the quality and performance of steel can be reduced due to the presence of non-metallic inclusions in steel, so that the manufacturing of new varieties of steel is influenced. In most cases, non-metallic inclusions in steel are formed during the steel making, refining and casting processes by small amounts of slag, refractories and various chemical reaction products of the smelting process entering the molten steel. The existing inclusion analysis methods are mostly used for evaluating and classifying the information such as the form, the size, the type and the like of the inclusions, and the improvement and the guidance of the process all need related experts to carry out statistics and analysis again.

Chinese patent application No. CN201410747269.6 is a method for in-situ processing and structural characterization of composite inclusions in steel, which is characterized in that a transmission electron microscope and the vicinity thereof are utilized to perform characteristic characterization on single composite inclusions, and multi-field information acquisition cannot be automatically performed; secondly, because the method is a simple feature for detecting the inclusions, the method still needs related experts for further statistics and analysis when the influence of the inclusions on the process is analyzed subsequently; therefore, this method has certain limitations.

Disclosure of Invention

In order to solve the technical problems, the invention provides a method for analyzing inclusions based on a steelmaking process. The method for analyzing the inclusions based on the steelmaking process uses software to control a scanning electron microscope to automatically perform multi-view-field inclusion characteristic values, uses the steelmaking process to establish an inclusion standard database, and compares the data information with the inclusion standard database, so that the automatically calculated inclusion characteristic values are more comprehensive, accurate and specific, and have stronger practicability.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a method for analyzing inclusions based on a steelmaking process is characterized by comprising the following steps:

measuring a sample to be detected to obtain data information of the sample to be detected;

establishing an inclusion standard database according to a steelmaking process;

and comparing the data information with the inclusion standard database to obtain an inclusion measurement result, and forming a file for storage.

Preferably, the method further comprises the following steps:

and supplementing the inclusion measurement result to the inclusion standard database to form updating of the inclusion standard database.

Preferably, the step of measuring the sample to be measured and obtaining the measurement result in the sample to be measured comprises the following steps:

preparing the sample to be detected;

adjusting working parameters and observing the sample to be detected in the current view range to acquire the information of the sample to be detected in the current view range;

calculating the vision field number of the sample to be measured according to the actual size of the sample to be measured;

and measuring the samples to be measured in all the vision field ranges one by one, and acquiring the information of the samples to be measured in all the vision fields.

Preferably, the preparation of the sample to be tested comprises the following steps:

polishing the sample to be detected on the water abrasive paper of a grinding machine, and grinding off the surface deformation layer of the sample to be detected until the surface of the sample to be detected is flat;

and polishing the ground sample to be detected to enable the ground surface to be a smooth mirror surface without scratches.

Preferably, the working parameters include working parameters of the electronic scanning mirror, configuration of the sample stage, image scanning parameters, image processing parameters and X-ray acquisition parameters.

Preferably, the information of the sample to be tested includes the size, size and classification of inclusions in the sample to be tested.

Preferably, the inclusion criteria database is created according to a steelmaking process, comprising the steps of:

inputting steelmaking process information;

analyzing and concluding the source of inclusions in the steel according to the deoxidation mode in the steelmaking process;

and classifying according to the chemical composition, the size form and the properties of the inclusions to form the inclusion standard database.

Preferably, the measurement result of the inclusions includes at least one of: average element composition of inclusions, particle size distribution diagram of inclusions, particle arrangement diagram of inclusions, national standard information table form classification method of inclusions, national standard information table element classification method of inclusions, element composition diagram of inclusions and size distribution ternary phase diagram of inclusions.

Based on the technical scheme, the invention has the beneficial effects that: the method comprises the steps of determining the information such as the composition, shape, size and type of inclusions in steel by analyzing a BSE (base station environment) image shot by a scanning electron microscope and Xray information acquired by an energy spectrum, comparing the information with an inclusion standard database established according to a steelmaking process, and evaluating the distribution condition of certain inclusions in the steelmaking process according to a formed measurement result.

Drawings

FIG. 1 is a flow chart of a method of inclusion analysis based on a steelmaking process according to the present invention;

FIG. 2 is a diagram illustrating parameter settings according to an embodiment of the present invention;

FIG. 3 is a general view of the test results of a single common carbon steel sample according to an embodiment of the present invention;

FIG. 4 is the average elemental composition of inclusions in a plain carbon steel sample according to an embodiment of the present invention;

FIG. 5 shows the particle composition of a single carbon steel-like inclusion in an example of the present invention;

FIG. 6 shows the particle size distribution of a single carbon steel-like inclusion in an example of the present invention;

FIG. 7 is a particle distribution diagram of a general carbon steel-like inclusion in an example according to the present invention;

FIG. 8 is a diagram showing an arrangement of particles of a single ordinary carbon steel-like inclusion in an example according to the present invention;

FIG. 9 is a table morphological classification method of national standard information of inclusions in a common carbon steel sample in an embodiment of the present invention;

FIG. 10 is a table element classification method of national standard information of inclusions in a common carbon steel sample according to an embodiment of the present invention;

FIG. 11 is a pie chart of the elemental composition of inclusions in a plain carbon steel sample according to an embodiment of the present invention;

FIG. 12 is a horizontal histogram of the elemental composition of a plain carbon steel inclusion in an example of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.