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Molten aluminum refining effect detection method

A detection method and technology of molten aluminum, used in specific gravity measurement, measurement devices, instruments, etc.

Pending Publication Date: 2022-05-13
安徽佳晟金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for detecting the refining effect of molten aluminum to solve the technical problem that existing online measurement methods have some defects

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for detecting the refining effect of molten aluminum, comprising the following steps:

[0035] Among them, in the sample preparation process, the sample preparation at least meets the following conditions:

[0036] Step S101, prepare the sample: take a crucible with multiple metal types and the same wall thickness, preheat it to 210°C, pour the 724°C aluminum liquid taken from the same furnace into the crucible, and then cover the bell jar to start the pumping process. Vacuum device, and pump the vacuum to -9.5*10 in 130s -3 Mpa, and after reaching the vacuum degree, turn off the vacuum pump, make the system automatically suck pressure, and after the molten aluminum is solidified and cooled to room temperature, the sample is prepared;

[0037] Step S102, density measurement: first place the measuring device in water, and without placing the test object, make the measured value 0 (i.e. zero operation), then weigh the mass W1 of the sample in the air, and then p...

Embodiment 2 3

[0043] According to the measurement method of Example 1, the difference is that the preheating temperature and vacuum degree of the crucible are different, see Table 1 for details:

[0044]

[0045] From the data in Table 1, it can be seen that the measured density obtained by the above method falls within the range of the converted density of the pinhole, that is, the measured density matches the pinhole, that is, the measurement results are all qualified.

[0046] Moreover, the density measured by the measurement method of Embodiment 1 has a better matching degree with the pinhole degree, that is, the measurement result is more accurate.

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Abstract

Relates to the technical field of molten aluminum production and detection, and discloses a molten aluminum refining effect detection method which comprises the following steps: preparing a sample: solidifying and forming molten aluminum in a crucible in a specified vacuum state within specified time to prepare the sample; the mass W1 of the obtained sample in the air and the mass W2 of the obtained sample in the water are respectively tested in the density test, and the corresponding density is obtained after density calculation. According to the method, the directly measured density is used as a main parameter basis for final quality grade evaluation, the measured pinhole degree grade is used as a secondary parameter basis for final quality grade evaluation, the density converted by the pinhole degree grade is compared with the measured density, if the density is not consistent with the measured density, refining is unqualified, and if the density is consistent with the measured density, refining is qualified.

Description

technical field [0001] The invention relates to the technical field of aluminum liquid production detection, in particular to a method for detecting the refining effect of aluminum liquid. Background technique [0002] In the production process of aluminum products, the two defects of pores and inclusions are the most important factors affecting the quality of aluminum alloy products, which has affected the application range of aluminum parts to a certain extent. Clean liquid metal is the guarantee and prerequisite for obtaining high-quality castings. According to relevant information, there are three main types of impurities that pollute the aluminum solution: welded hydrogen, non-metallic inclusions, and unnecessary alkali or alkaline earth metals. [0003] In the detection of the refining effect of molten aluminum, the content of the above-mentioned impurities is mainly detected, but there are some defects in the existing on-line measurement methods. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): G01N9/36
CPCG01N9/36
Inventor 路凯赵磊陈军刘东坤
Owner 安徽佳晟金属科技有限公司
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