Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for measuring melting speed of continuous casting covering slag

A technology for continuous casting slag and melting speed, applied in the field of measurement and analysis, can solve the problems of easy adhesion of molten slag, difficult to collect and measure and weigh completely, complicated structure of testing device, etc., to achieve strong practicability, eliminate inaccuracy and Subjectivity, the effect of accurate quantitative indicators

Inactive Publication Date: 2013-04-24
WUKUN STEEL
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Melting drop method: It is a relatively scientific method at present, but the structure of the test device is complicated, and the molten slag is easy to adhere to the crucible wall, and it is difficult to completely collect, measure and weigh

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Take 500g of continuous casting mold flux, the carbon content of chemical analysis is: 5.03%, and its melting rate is measured by the following steps:

[0039] (1) Weigh the weight of the cylindrical porcelain crucible (inner diameter ∮ 19mm, inner depth 18mm) for routine testing, denoted as W 1= =16.567 (g), and calculate the surface area of ​​the inner wall of the crucible, recorded as A=1.9×3.14×1.8=10.74 (cm 2 ), fill the crucible with the continuous casting mold slag to be tested, and scrape the surface;

[0040] (2) Use a conventional slag viscosity test furnace, place a graphite crucible at the bottom of the furnace, place a round lightweight refractory brick bracket in the graphite crucible, and place the crucible filled with continuous casting mold slag in step (1) completely on the bracket, Heat at a temperature of 1350°C until the continuous casting mold flux around the crucible melts, record the time as t=480 (seconds); then take out the crucible and put it...

Embodiment 2

[0049] Collect 500g of continuous casting mold flux, the carbon content of chemical analysis is: 8.68%, and its melting rate is measured by the following steps:

[0050] (1) Weigh the weight of the cylindrical porcelain crucible (inner diameter ∮ 19mm, inner depth 18mm) for routine testing, denoted as W 1 =18.076 (g), and calculate the surface area of ​​the inner wall of the crucible, recorded as A=1.9×3.14×1.8=10.74 (cm 2 ), fill the crucible with the continuous casting mold slag to be tested, and scrape the surface;

[0051] (2) Use a conventional high-temperature furnace, place a graphite crucible at the bottom of the furnace, and place a round lightweight refractory brick bracket in the graphite crucible, place the crucible filled with continuous casting mold slag in step (1) completely on the bracket, and at 1340 Heat at a temperature of ℃ until the continuous casting mold slag around the crucible melts, and record the time as t=660 (seconds); then take out the crucible ...

Embodiment 3

[0060] Collect 500g of continuous casting mold flux, chemical analysis contains 20.02% carbon, and its melting rate is measured by the following steps:

[0061] (1) Weigh the weight of the cylindrical porcelain crucible (inner diameter ∮ 19mm, inner depth 18mm) for routine testing, denoted as W 1 =17.268 (g), and calculate the surface area of ​​the inner wall of the crucible, recorded as A=1.9×3.14×1.8=10.74 (cm 2 ), fill the crucible with the continuous casting mold slag to be tested, and scrape the surface;

[0062] (2) Use a conventional slag viscosity test furnace, place a graphite crucible at the bottom of the furnace, place a round lightweight refractory brick bracket in the graphite crucible, and place the crucible filled with continuous casting mold slag in step (1) completely on the bracket, Heat at 1360°C until the continuous casting mold slag around the crucible melts, and record the time as t=2700 (seconds); then take out the crucible and put it into a cooling tan...

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 provides a method for measuring the melting speed of continuous casting covering slag. The method comprises the following steps of: observing the melting situation of the covering slag filling a crucible at 1350+ / -10 DEG C; taking out the crucible when the covering slag is to be completely melted; cooling the covering slag, and accurately separating the completely melted covering slag; and calculating the melting speed of the covering slag according to an equation that the melting speed VR is equal to MR.104 / (t.A) (10-3 kg / s.m<2>). The method is rapid, simple and convenient, is high in practicability, can be used for approximately simulating the real situation that the covering slag is unidirectionally heated to be melted in a crystallize, and is free from sample preparation and carbon burning; according to the method, whether the added covering slag is completely melted or not does not need to be accurately judged, so that the inaccuracy and the subjectivity in artificial judgment are prevented; and moreover, the definition of the melted covering slag is accurate and scientific, so that accurate quantitative indexes are provided for measuring the melting speed of the covering slag.

Description

technical field [0001] The invention relates to a method for measuring the melting rate of mold slag used in steelmaking and continuous casting, and belongs to the technical field of measurement and analysis. Background technique [0002] Continuous casting mold slag is an important functional material in steelmaking and continuous casting production, which plays a very important role in improving the quality of continuous casting slabs and ensuring the smooth operation of the process. [0003] The melting rate of mold flux is an important performance index to characterize the high temperature behavior of continuous casting mold flux in the mold. Its speed directly affects the structure of the slag layer above the meniscus of the mold, the shape of the liquid film between the billet and the mold, and the heat transfer rate . During the production process, mold slag is added to the molten steel surface of the mold, and it is required to have a suitable melting speed to ensur...

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
IPC IPC(8): G01N5/00
Inventor 褚立新曹阳张力李金柱张卫强
Owner WUKUN STEEL