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Vacuum sealing window for 2450MHz high-power microwave sintering and smelting

A microwave sintering and vacuum sealing technology, applied in crucible furnaces, furnaces, charging processing types, etc., can solve problems such as window ablation, sealing window damage, ignition, etc., and achieve the effect of avoiding ignition and ablation

Pending Publication Date: 2021-11-05
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the design is not proper, heat will be generated rapidly due to the dielectric loss of the dielectric material, and the temperature rise will cause the window to be ablated, sparked, and cause damage to the sealed window

Method used

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  • Vacuum sealing window for 2450MHz high-power microwave sintering and smelting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, a vacuum sealing window for 2450MHz high-power microwave sintering and smelting in this embodiment includes a first waveguide at the vacuum end, a second waveguide at the feeding end, and a dielectric window between the first waveguide and the second waveguide ;

[0041] The first waveguide and the second waveguide are BY22 circular waveguides with flanges, and the first waveguide and the second waveguide are fixedly connected by bolts;

[0042] The first waveguide is equipped with a sealing groove, and a sealing ring is arranged in the sealing groove, and the sealing ring protrudes 2mm from the sealing window;

[0043] The dielectric window is a ceramic dielectric window with a dielectric constant of 9.9, a thickness of 19.8mm, and a diameter of 129.5mm.

Embodiment 2

[0045] like figure 1 As shown, a vacuum sealing window for 2450MHz high-power microwave sintering and smelting in this embodiment includes a first waveguide at the vacuum end, a second waveguide at the feeding end, and a dielectric window between the first waveguide and the second waveguide ;

[0046] The first waveguide and the second waveguide are BY22 circular waveguides with flanges, and the first waveguide and the second waveguide are fixedly connected by bolts;

[0047] The first waveguide is equipped with a sealing groove, and a sealing ring is arranged in the sealing groove, and the sealing ring protrudes 2mm from the sealing window;

[0048] The dielectric window is a Teflon dielectric window with a dielectric constant of 2.1, a thickness of 59 mm, and a diameter of 129.5 mm.

[0049] As an alternative to the above-mentioned embodiment, in other embodiments, the thickness of the dielectric window may be selected to be increased by an integer multiple.

[0050]In th...

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Abstract

The invention discloses a vacuum sealing window for 2450MHz high-power microwave sintering and smelting. The vacuum sealing window comprises a first waveguide located at a vacuum end, a second waveguide located at a feed-in end, and a dielectric window located between the first waveguide and the second waveguide, and wave crests formed by propagation of the microwaves in the dielectric window are located outside the dielectric window. By adopting the vacuum sealing window for 2450MHz high-power microwave sintering and smelting, when a metal material is smelted by the microwaves, it is guaranteed that the microwave energy is fed into a vacuum smelting furnace, and burning and erosion at the sealing window are avoided.

Description

technical field [0001] The invention relates to a vacuum sealing window for 2450MHz high-power microwave sintering and smelting, belonging to the technical field of microwave smelting. Background technique [0002] Traditional heating relies on the heating element to transfer heat energy to the heated object through convection, conduction or radiation to reach a certain temperature. Microwave sintering uses the special wave band of microwave to couple with the basic fine structure of the material to generate heat, and the dielectric loss of the material makes the whole material heated to the sintering temperature to achieve densification. Compared with conventional sintering, microwave sintering has the advantages of fast heating speed, high energy utilization rate, high heating efficiency, safety, sanitation and pollution-free, and can improve the uniformity and yield of products. Because of its advantages of cleanliness, high efficiency and convenient operation, it is wid...

Claims

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Application Information

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IPC IPC(8): F27B14/04F27B14/06F27B14/08
CPCF27B14/04F27B14/06F27B14/08F27B2014/045F27M2003/13
Inventor 郑强林闫二艳杨浩陈世韬鲍向阳
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS