knowledges

Development Direction Of Tungsten Crucible Preparation Technology

2024-01-05 18:00:06

According to the application and research status of tungsten crucible, it is expected that in the next few years, the development direction of tungsten crucible will be to study and prepare large size, high quality and low cost tungsten crucible.

tungsten crucible

At present, the main application field for tungsten crucible is sapphire crystal growth, rare earth smelting, quartz even melting etc, these three industries using isostatic pressing - tungsten crucible sintering production at the core of high-temperature equipment production product, the three industry demand for high quality and large size equipment influence over the next few years the development of tungsten crucible; In addition, tungsten crucible is also used for spent nuclear fuel reprocessing and vacuum evaporation coating industry, such as spent nuclear fuel reprocessing can be produced by isostatic pressure sintering or chemical vapor deposition method tungsten crucible, tungsten crucible produced by forging processing method is generally used in the vacuum evaporation coating industry.


In terms of preparation technology research, the isostatic pressure-sintering method is the most common production method at present. The technology of preparing large-size tungsten crucible by using the isostatic pressure-sintering method in China has reached the international advanced level. At the same time, the shaped and thin-walled tungsten crucible prepared by CVD method may form an industrial scale. In the development of tungsten crucible product specifications, the production of large-size tungsten crucible is one of the development directions of the industry. The tungsten crucible with a diameter of more than 380 mm will gradually become the mainstream of the market. The research and development and production of high-quality tungsten crucible with a diameter of more than 800 mm is an upcoming topic for the industry. In terms of the performance of tungsten crucible, the product density produced by isobaric-sintering method increases year by year. Currently, the tungsten crucible density in China reaches 18.3g /cm3, and the tungsten crucible density is expected to reach 18.5g /cm3 in the next few years. Uniform internal structure and good deformation resistance at high temperature will be an important test requirement for tungsten crucible. The relationship between the properties of tungsten crucible and its practical application is worth analyzing and summarizing by researchers and users. At the same time, it is another important research direction for the production of tungsten crucible in the future to promote near-size forming, improve the comprehensive utilization rate of tungsten powder during the production and preparation of tungsten crucible, and reduce the production cost as much as possible.


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