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Hydrogen partial pressure rapid detection method for aluminum alloy melt dynamic respiration 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: 2020-06-16
HARBIN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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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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  • Hydrogen partial pressure rapid detection method for aluminum alloy melt dynamic respiration method hydrogen measurement device
  • Hydrogen partial pressure rapid detection method for aluminum alloy melt dynamic respiration method hydrogen measurement device

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine figure 1 , figure 2 Describe this embodiment, a hydrogen partial pressure rapid detection method for an aluminum alloy melt dynamic respiration method hydrogen measuring device of this embodiment, including the following steps:

[0024]Step 1: Construct a hydrogen partial pressure rapid detection system for the aluminum alloy melt dynamic respiration 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, and the first cylinder 1, the telescopic end of the displacement sensor 2, the output end of the electric push rod 3 and the upper part of the output end of the second cylinder 5 are fixedly connected with a rigid crossbeam 4, and the first cylinder 1 and the second cylinder 5 are located between the electric push rod 3 and Both sides of the displacement sensor 2, the output signal of the displacement sensor 2 a...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination figure 1 Describe this embodiment, a hydrogen partial pressure fast detection method for a hydrogen measuring device of an aluminum alloy melt dynamic respiration method in this embodiment, 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 mode three: combination figure 1 Describe this embodiment, a hydrogen partial pressure rapid detection method for an aluminum alloy melt dynamic respiration method hydrogen measuring device in this embodiment, the fixed base plate 6 and the rigid beam 4 are made of high-strength and high-rigidity materials, and the displacement sensor is improved. 2 Accuracy of measurement data.

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Abstract

The invention relates to a hydrogen partial pressure rapid detection method for an aluminum alloy melt dynamic respiration method hydrogen measurement device, which belongs to the field of casting andmetallurgy, and solves the problems of complex structure, long detection time, inconvenient application and high manufacturing and use cost of the previous dynamic respiration method hydrogen measurement device. A melt hydrogen partial pressure detection system is constructed, no-load operation is carried out to determine characteristic parameters of a variable-capacity vacuum unit, an electric push rod drives a first cylinder and a second cylinder to increase the capacity to extract the vacuum degree required by hydrogen measurement by a dynamic respiration method, the gas pressure intensityin the variable-volume vacuum chamber is compared with the sum of the iterative computation theoretical pressure intensity and the vacuum chamber characteristic parameters so as to judge whether diffusion is finished or not and solve the melt hydrogen partial pressure, negative pressure required by the dynamic respiration method hydrogen measurement device can be provided through air cylinder volume changing, aluminum alloy melt hydrogen partial pressure detection is completed while capacity increasing and vacuum pumping are conducted in the variable-volume vacuum chamber, and rapid hydrogenpartial pressure detection is achieved under the condition that the vacuum pump and a hydrogen cylinder are not used.

Description

technical field [0001] The invention relates to a hydrogen partial pressure rapid detection method for a hydrogen measuring device using an aluminum alloy melt dynamic respiration method, and belongs to the field of casting and metallurgy. Background technique [0002] The hydrogen content of aluminum alloy melt has an important influence on the quality of aluminum alloy castings. The hydrogen content of aluminum alloy melt is quickly detected 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 calculate the hydrogen content by measuring the hydrogen partial pressure of the melt, and the other is to calculate the hydrogen con...

Claims

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Application Information

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Patent Type & Authority Applications(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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