Method for detecting inclusions in aluminum and aluminum alloy melt

A technology of aluminum alloy melt and detection method, which is applied in the preparation of test samples, material analysis by observing the influence of chemical indicators, and analysis by chemical reaction of materials, etc., can solve the difficulty of aluminum sheet samples. Dissolution, time-consuming and other problems, to achieve the effect of speeding up the dissolution, ensuring the accuracy, and speeding up the dissolution speed

Inactive Publication Date: 2020-12-25
许敏
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to make up for the deficiencies in the prior art and to solve the problem that the aluminum sheet sample is difficult to dissolve in the ethanol solution in the existing detection method for inclusions in the aluminum and aluminum alloy melts, thus causing the entire detection process to take too long, the invention proposes A method for detecting inclusions in aluminum and aluminum alloy melts

Method used

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  • Method for detecting inclusions in aluminum and aluminum alloy melt
  • Method for detecting inclusions in aluminum and aluminum alloy melt
  • Method for detecting inclusions in aluminum and aluminum alloy melt

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specific Embodiment approach

[0039] As a specific embodiment of the present invention, a No. 1 groove 231 is provided at the part where the lower surface of the partition plate 23 is connected to the No. 1 rope 242, and a No. 1 plate 232 is arranged inside the No. 1 slot 231. One end of the No. 1 plate 232 is It is rotatably connected with the inner surface of the side wall of the No. 1 groove 231, and the other end is connected with the upper bottom surface of the No. 1 groove 231 through a spring. The spring stiffness coefficient connected to the No. 1 plate 232 is relatively large; the top of the No. 1 slot 231 is provided with a No. 2 through hole 233, and the No. 2 through hole 233 is a tapered hole, and the No. 2 through hole 233 The larger end of the cross-section is located on the upper surface of the partition 23; the floating plate 24 drives the partition 23, so that the ethanol solution in the No. 1 area is added to the ethanol solution at the bottom of the cylinder body 2, which further promote...

Embodiment approach

[0041] As a specific embodiment of the present invention, the top of the cylinder cover 1 is provided with a condensate tank 13, and the inside of the condensate tank 13 is filled with cooling water; the condensate tank 13 communicates with the inside of the cooling chamber 12 through the No. Interconnected; through the effect of the condensed water tank 13, the cooling chamber 12 can better perform the condensation function to liquefy the ethanol gas and return to the effect, ensuring that the reaction can be carried out normally; when in use, when the cooling water in the cooling chamber 12 is mixed When the gas is heated and the temperature rises, the cooling water can exchange heat with the cooling water in the condensation tank through the No. 1 channel 131 to ensure that the cooling chamber 12 can function normally, so that the ethanol gas in the mixed gas can be condensed and liquefied in time And backflow to the bottom of cylinder body 2, it is ensured that the reaction...

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Abstract

The invention belongs to the field of non-ferrous metal element detection, and particularly relates to a method for detecting inclusions in aluminum and aluminum alloy melt. The method comprises the following steps of: S1, cutting a small piece from an object to be detected as a sample, and cleaning and drying the sample; S2, dissolving an aluminum sheet sample in an ethanol solution; S3, filtering the ethanol solution obtained in the S2, melting the filtered impurities, adding water and hydrochloric acid, and pouring the mixture into a 100ml volumetric flask; and S4, adding a nitrophenol indicator into the 100ml volumetric flask, performing color modulation, and finally determining the type and content of the inclusions according to color comparison. According to the method disclosed by the invention, a return pipe and a partition plate are arranged in a closed reflux reaction cylinder, and nitrogen is injected into the reflux reaction cylinder, so that on one hand, the air pressure inside the reflux reaction cylinder can be increased, the boiling point of the ethanol solution is increased, and dissolution of the aluminum sheet sample is accelerated; and on the other hand, the nitrogen can protect the aluminum sheet sample from being oxidized by oxygen, so that the accuracy of the final detection result is ensured.

Description

technical field [0001] The invention belongs to the field of detection of nonferrous metal elements, in particular to a detection method for inclusions in aluminum and aluminum alloy melts. Background technique [0002] Aluminum and aluminum alloys are currently one of the most economically applicable materials that are widely used. Since 1956, the world's aluminum output has surpassed that of copper, and it has always ranked first in non-ferrous metals. The current production and consumption of aluminum (calculated by ton) is second only to steel, and has become the second largest metal used by human beings; moreover, aluminum resources are very abundant. According to preliminary calculations, the mineral reserves of aluminum account for more than 8% of the earth's crustal constituents. ; and the content of inclusions in aluminum and aluminum alloy melts has seriously affected the various physical and chemical properties of aluminum and aluminum alloy melts, so accurately ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N21/78
CPCG01N1/28G01N21/78
Inventor 许敏周杰
Owner 许敏
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