Rapid detection method of hydrogen partial pressure for aluminum alloy melt dynamic breathing method hydrogen measurement device

A technology of aluminum alloy melt and detection method, which is applied in the field of casting and metallurgy, can solve the problems of complex structure, high manufacturing and use costs, and inconvenient application of the dynamic breath method hydrogen measurement device, and achieve intelligent, intuitive and easy-to-operate detection , the effect of structural simplification

Active Publication Date: 2022-07-05
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The invention solves the problems of complex structure, long detection time, inconvenient application, high manufacturing and use cost of the previous dynamic respiration method hydrogen measuring device

Method used

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  • Rapid detection method of hydrogen partial pressure for aluminum alloy melt dynamic breathing method hydrogen measurement device
  • Rapid detection method of hydrogen partial pressure for aluminum alloy melt dynamic breathing method hydrogen measurement device

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specific Embodiment approach 1

[0023] Embodiment 1: Combining figure 1 , figure 2 Illustrating this embodiment, a method for rapidly detecting hydrogen partial pressure for an aluminum alloy melt dynamic respiration method for hydrogen measurement device of this embodiment includes the following steps:

[0024]Step 1: Build a rapid hydrogen partial pressure detection system for aluminum alloy melt dynamic breathing method hydrogen measurement device. The first cylinder 1, the displacement sensor 2, the electric push rod 3 and the second cylinder 5 are fixed on the fixed base plate 6. The first cylinder A rigid beam 4 is fixedly connected to the upper part of the output end of 1, the telescopic end of the displacement sensor 2, the output end of the electric push rod 3 and the output end of the second cylinder 5. The first cylinder 1 and the second cylinder 5 are located at the electric push rod 3 and the upper part of the output end of the second cylinder 5. On both sides of the displacement sensor 2, the...

specific Embodiment approach 2

[0037] Specific implementation mode 2: Combining figure 1 Illustrating this embodiment, a kind of aluminum alloy melt dynamic breathing method hydrogen measurement device of this embodiment uses a hydrogen partial pressure rapid detection method, and the computer measurement and control unit 12 includes a computer, an analog signal amplifier, a relay, and an input / output interface circuit, It is convenient for data processing and intuitive display.

specific Embodiment approach 3

[0038] Specific implementation three: combination figure 1 Illustrating this embodiment, a method for rapid detection of hydrogen partial pressure for an aluminum alloy melt dynamic breathing method hydrogen measurement device of this embodiment, the fixed bottom plate 6 and the rigid beam 4 are high-strength and high-rigidity materials, and the displacement sensor is improved. 2 The accuracy of the measurement data.

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Abstract

The invention relates to a rapid hydrogen partial pressure detection method for an aluminum alloy melt dynamic breathing method hydrogen measuring device, belonging to the fields of casting and metallurgy. Convenience, high cost to manufacture and use. The invention constructs a melt hydrogen partial pressure detection system, runs at no-load to measure the characteristic parameters of the variable volume vacuum unit, the electric push rod drives the first cylinder and the second cylinder to increase the capacity to extract the required vacuum degree of hydrogen by dynamic breathing method, and compare the variable volume. The sum of the gas pressure in the vacuum chamber and the iterative calculation of the theoretical pressure and the characteristic parameters of the vacuum chamber is used to judge whether the diffusion has ended and to solve the partial pressure of melt hydrogen. The vacuum chamber is enlarged and the vacuum is drawn, and the hydrogen partial pressure detection of the aluminum alloy melt is completed, and the hydrogen partial pressure rapid detection is realized without the use of a vacuum pump and a hydrogen bottle.

Description

technical field [0001] The invention relates to a rapid detection method for hydrogen partial pressure for an aluminum alloy melt dynamic breathing method hydrogen measuring device, and belongs to the fields of casting and metallurgy. Background technique [0002] The hydrogen content of aluminum alloy melt has an important impact on the quality of aluminum alloy castings. Rapid detection of hydrogen content of aluminum alloy melt is carried out at the smelting site, and the pre-treatment plan of the melt furnace is determined according to the test results, and the hydrogen content of aluminum alloy melt is strictly controlled. It is of great significance to improve product quality, reduce scrap rate and reduce production cost. The detection methods of hydrogen content in aluminum alloy melts can be roughly divided into two categories. One is to measure the hydrogen partial pressure of the melt and use the Westward law to calculate the hydrogen content. The other is to measu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N7/00
CPCG01N7/00Y02P10/20
Inventor 李大勇张艳辉陈浩
Owner HARBIN UNIV OF SCI & TECH
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