Hydrogen determining analyzer and method for analyzing content of hydrogen in metal powder
A technology of analyzer and dust filter, which is applied in the field of hydrogen determination analyzer and analysis of hydrogen content in metal powder, can solve problems such as damage to the instrument, analysis, and influence on the analysis accuracy of the instrument, so as to solve the problem of hydrogen content and easy operation. , the effect of simple installation
Inactive Publication Date: 2013-04-10
CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD
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Problems solved by technology
[0002] Metal powder is a coating material for plasma spraying of parts such as discs and shafts in the manufacture of an aero-engine. Metal powder contains a small amount of hydrogen, and the amount of hydrogen has a great influence on the performance of the material. This requires the determination of metal The content of hydrogen in the powder. When measuring the hydrogen content in the metal powder in the laboratory, the hydrogen analyzer was used to place the metal powder directly in the graphite crucible. When the metal powder is melted at a high temperature, splashes will occur and stick to the analysis channel of the instrument. In this case, it will affect the analysis accuracy of the instrument or damage the instrument, so that the analysis of the hydrogen content in the metal powder cannot be carried out.
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[0014] The technical solutions of the present invention are further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.
[0015] A hydrogen determination analyzer, which consists of argon gas source 1, pressure regulating switch 2, alkali asbestos or anhydrous magnesium perchlorate filter 3, steady flow valve 4, pulse heating furnace 5, dust filter 6, thermal conductivity detection The pool 8 and the power gas 9 are composed, wherein the argon gas source 1 is connected with the air inlet of the alkali asbestos or anhydrous magnesium perchlorate filter 3 through the pressure regulating switch 2, and the alkali asbestos or anhydrous magnesium perchlorate filter 3 The air outlet is connected with the first air inlet of the pulse heating furnace 5 through the steady flow valve 4, the power gas 9 is connected with the second air inlet of the pulse heating furnace 5, and the analysis sample is placed in the pul...
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The invention discloses a hydrogen determining analyzer and a method for analyzing the content of hydrogen in metal power. The method comprises the following steps: (1), placing metal powder to be measured in a high-purity tinfoil or tin bag; (2), placing the high-purity tinfoil or tin bag in a graphite crucible of a pulse heating furnace of the hydrogen determining analyzer, and opening power gas to enable a bottom electrode to rise so as to enable the graphite crucible to be in contact with the electrode; (3), powering on the electrode to melt down the to-be-measured powder in the tinfoil or tin bag, heating the pulse heating furnace under the driving of argon flow, and enabling hydrogen released in the melting process of the to-be-measured powder to enter a dust filter for filtering dust; and (4), detecting the content of hydrogen. The method has the benefits that the device is simple, the operation is easy to carry out, the problem that analysis precision of the analyzer is affected or the analyzer is damaged due to the circumstance that powder splashes and is adhered to the analysis passage of the analyzer can be avoided, and the problem that at present, the content of hydrogen in metal powder samples can not be analyzed is solved.
Description
technical field [0001] The invention relates to a hydrogen determination analyzer and an analysis method for hydrogen content in metal powder, belonging to the technical field of gas analysis. Background technique [0002] Metal powder is a coating material for plasma spraying of parts such as discs and shafts in the manufacture of an aero-engine. Metal powder contains a small amount of hydrogen, and the amount of hydrogen has a great influence on the performance of the material. The hydrogen content in the powder, when the laboratory measures the hydrogen content in the metal powder, the hydrogen analyzer is used to directly place the metal powder in the graphite crucible. When the metal powder is melted at high temperature, splashes will occur and stick to the instrument analysis channel. It will affect the analysis accuracy of the instrument or damage the instrument, so that the analysis of the hydrogen content in the metal powder cannot be carried out. SUMMARY OF THE I...
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IPC IPC(8): G01N25/18
Inventor 赵黎峰梁海
Owner CHINA HANGFA GUIZHOU LIYANG AVIATION POWER CO LTD