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Vacuum-sealed container, vacuum sealing method, and vacuum heat treatment method

A vacuum sealing and container technology, which is applied to the sealing of engines, engine components, mechanical equipment, etc., can solve problems such as long-term and inability to meet sealing requirements, improve vacuum sealing performance, increase effective storage time, and achieve low cost. Effect

Active Publication Date: 2018-04-17
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

However, the heat treatment in many experiments takes a long time, which puts higher demands on the sealing technology
In the above-mentioned vacuum sealing method, the sealing structure used is to sinter the quartz column in the quartz tube for sealing. Such a sealing structure cannot meet the sealing requirements required for long-term vacuum heat treatment. During the long-time heat treatment process, there will always be A little air slowly penetrates into the tube from the sealing port and reacts with the sample in a subtle way, which is undoubtedly a huge challenge for microscopic detection experiments

Method used

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  • Vacuum-sealed container, vacuum sealing method, and vacuum heat treatment method
  • Vacuum-sealed container, vacuum sealing method, and vacuum heat treatment method
  • Vacuum-sealed container, vacuum sealing method, and vacuum heat treatment method

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Embodiment Construction

[0023] The present invention aims at the problem that the existing vacuum sealing technology based on quartz tubes cannot meet the sealing requirements of long-term vacuum heat treatment, and improves the vacuum sealing method. The sealing structure of the titanium sponge between the two sealing parts, on the one hand, uses the two sealing parts to improve the vacuum sealing performance, and more importantly, the titanium sponge can absorb the infiltrated air well, so that the entire vacuum-sealed container can last for a long time. There is almost zero leakage during the heat treatment process for a long time, which ensures the effect of the experiment and improves the effective storage time of the sample.

[0024] Specifically, in the vacuum-sealed container proposed by the present invention, the container is a quartz tube with an open upper end, and a sealing structure is provided between the bottom of the quartz tube and the opening end, and the cavity between the sealing s...

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Abstract

The invention discloses a vacuum sealing container which is a quartz tube with an opening in the upper end. A sealing structure is arranged between the bottom and the opening end of the quartz tube. A cavity between the sealing cavity and the bottom of the quartz tube is in a vacuum or inert gas filling state. The sealing structure comprises a first sealing portion and a second sealing portion which are sequentially arranged from the bottom to the opening end of the quartz tube. A cavity between the first sealing portion and the second sealing portion is filled with titanium sponge. The invention further discloses a vacuum sealing method and a vacuum heat treatment method. Compared with the prior art, the sealing requirements for long-time vacuum heat treatment can be met, experiment results are ensured, operation is easy and convenient, and the implementation cost is low.

Description

technical field [0001] The invention relates to a heat treatment experiment method, in particular to a vacuum sealed container, a vacuum sealing method and a heat treatment method. Background technique [0002] Generally, metal materials are heated in an air furnace. Due to the presence of oxidizing gases such as oxygen, water vapor, and carbon dioxide in the air, the oxidation of these gases with the metal will easily cause oxide film or scale on the heated metal surface, completely losing the original Metallic luster. At the same time, these gases also react with the carbon in the metal to decarburize the surface. If the furnace contains carbon monoxide or methane gas, it will also carburize the metal surface. For Ti, Zr and refractory metals W, Mo, Nb, Ta, etc., which are very active in chemical properties, heating in an air furnace will not only generate oxides, hydrides, and nitrides, but also absorb these gases and send them to the inside of the metal. Diffusion ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/773F16J15/02
CPCC21D1/773F16J15/02
Inventor 李志军储祥伟冷滨贾彦彦符彩涛程宏伟
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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