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Method and device for carrying out online component detection and solidification structure control on magnesium alloy

A solidification structure and composition detection technology, which is applied in the field of control, magnesium alloy large ingot and complex casting forming process, magnesium alloy on-line composition detection and solidification structure control of furnace melt inspection, alloy preparation process detection field, can solve the problem It is unfavorable to analyze and test the problems such as the deployment of the work site, so as to facilitate the production guidance, reduce the production cost, and achieve the effect of stable results

Inactive Publication Date: 2012-05-02
SHANGHAI HAOHUA MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the change of such conditions often requires the addition of additional complex processes and auxiliary equipment, such as strict control of mold temperature, precise adjustment of cooling rate, addition of mold supporting devices, etc., which is very unfavorable for on-site analysis and testing work.

Method used

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  • Method and device for carrying out online component detection and solidification structure control on magnesium alloy
  • Method and device for carrying out online component detection and solidification structure control on magnesium alloy
  • Method and device for carrying out online component detection and solidification structure control on magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] use figure 1 The shown process flow and equipment are used to smelt magnesium alloy of alloy grade WE43, and the basic operation steps are as follows:

[0048] 1. Use a 40Kg crucible resistance furnace to melt the WE43 magnesium alloy, raise the temperature of the melt to 760°C, and fix the probe of the thermocouple 3 to a specific position of the constant volume mold 7 through the positioning fixture 2.

[0049] 2. Turn on the temperature acquisition system 4, take out the magnesium liquid from the crucible by using the quantitative pouring ladle 1, and quickly pour it into the constant volume mold 7.

[0050] 3. The T of the magnesium alloy melt is measured by the magnesium alloy online composition detection and solidification structure control device. α-n实 , T eu-n实 , T eu-g实 , T s实 and the corresponding t α-n实 , t eu-n实 , t eu-g实 , t s实 Calibrate.

[0051] 4. Call the standard T in the cast magnesium alloy database 6 α-n标 , T eu-n标 , T eu-g标 , T s标 , t ...

Embodiment 2

[0054] use figure 1 The shown process flow and equipment are used to smelt the magnesium alloy of alloy grade AZ31, and the basic operation steps are as follows:

[0055] 1. Use a 4Kg crucible resistance furnace to melt the AZ31 magnesium alloy, raise the temperature of the melt to 740°C, and fix the probe of the thermocouple 3 to a specific position of the constant volume mold 7 through the positioning fixture 2.

[0056] 2. Turn on the temperature acquisition system 4, take out the magnesium liquid from the crucible using the quantitative ladle 1, measure the temperature through the thermocouple 3, and pour it into the constant volume mold 7 when it drops to 720°C.

[0057] 3. The T of the magnesium alloy melt is measured by the magnesium alloy online composition detection and solidification structure control device. α-n实 , T eu-n实 , T eu-g实 , T s实 and the corresponding t α-n实 , t eu-n实 , t eu-g实 , t s实 Calibrate.

[0058] 4. Call the standard T in the cast magnesiu...

Embodiment 3

[0061] use figure 1 The shown process flow and equipment are used to smelt the magnesium alloy of alloy grade WE54, and the basic operation steps are as follows:

[0062] 1. Use a 200Kg crucible resistance furnace to melt the WE54 magnesium alloy, raise the temperature of the melt to 780°C, and fix the probe of the thermocouple 3 to a specific position of the constant volume mold 7 through the positioning fixture 2.

[0063] 2. Turn on the temperature acquisition system 4, take out the magnesium liquid from the crucible using the quantitative ladle 1, measure the temperature through the thermocouple 3, and pour it into the constant volume mold 7 when it drops to 760°C.

[0064] 3. The T of the magnesium alloy melt is measured by the magnesium alloy online composition detection and solidification structure control device. α-n实 , T eu-n实 , T eu-g实 , T s实 and the corresponding t α-n实 , t eu-n实 , t eu-g实 , t s实 Calibrate.

[0065] 4. Call the standard T in the cast magnes...

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Abstract

The invention discloses a method for carrying out online component detection and solidification structure control on a magnesium alloy, and provides a corresponding implementing device. In the method, a magnesium alloy melt is extracted by using a quantitative casting ladle, a heat capacity of the melt is controlled by a constant-volume die, a temperature of the melt is measured by adopting a thermoelectric couple in real time, change of the temperature with time in a process of solidifying the melt is acquired and recorded by a temperature acquisition system, solidification reaction characteristic parameters are compared by calling a casting magnesium alloy database through a computer, chemical composition, and contents of a modificator and a refining agent in the alloy melt are regulated, and finally, a solidification structure is controlled. According to a classical solidification theory, components in a molten alloy are detected before pouring, and an analysis result is predicted according to the solidification structure, and contents of alloy elements related to the melt are regulated, thus the method has the advantages of stable result, high reliability, short analysis period, high automatic level, low analysis cost, simpleness and easiness in operation, has capabilities of effectively improving casting quality, reducing production cost and decreasing production period, and is suitable for flushing and casting in a magnesium alloy melting site.

Description

technical field [0001] The present invention relates to a method and device for detecting and controlling the alloy preparation process, in particular to a method and device for on-line composition detection and solidification structure control of magnesium alloys used for furnace melt inspection, especially for large-scale magnesium alloy castings. The invention relates to a molding process of ingots and complex castings, belonging to the technical field of metal materials and metallurgy. Background technique [0002] As we all know, the initial solidification structure of alloy materials directly affects the structure and properties of the final product, and many factors such as smelting process, casting process, and alloy composition have a great impact on the solidification process and solidification structure of the alloy. Adding alloying elements, modifiers and refiners to the magnesium alloy melt can control the size, distribution and morphology of the grains and prec...

Claims

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Application Information

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IPC IPC(8): B22D46/00
Inventor 庞松吴国华刘文才丁文江
Owner SHANGHAI HAOHUA MOLD
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