Method for producing seal welding sheet of microwave over magnetic control tube
A production method and microwave oven technology, applied in the manufacture of discharge tubes/lamps, electrical components, electrode systems, etc., can solve the problems of easy adsorption of dust and oil, many shrinkage holes, high production costs, etc. Effects of oil pollution, lower production cost, and high utilization rate
Active Publication Date: 2009-06-03
晏弘
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Problems solved by technology
Although this production method can produce copper-silver alloy plates, there are the following problems: First, the vacuum degree in the melting furnace is 0.7-3MPa during vacuum melting, and the vacuum degree is relatively low.
Due to the low degree of vacuum, the copper-silver alloy is very easy to absorb oxygen, which makes the produced products easy to change color, deteriorate, and poor quality
The second is that a single graphite or porous graphite mold liquid without surface treatment is used for casting. The surface of the cast alloy body is rough and has many shrinkage holes, which makes the surface of the rolled plate not only easy to crack during the rolling process, but also extremely Easy to absorb dust and oil
As a result, the utilization rate of materials is low during car stripping, and the production cost is high
Moreover, the consistency in mass production cannot be guaranteed, and thus the quality consistency of the magnetron cannot be guaranteed
Method used
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Experimental program
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Embodiment Construction
[0031] first embodiment
[0032] Get your ingredients ready first. Select the silver that is 50 parts by weight and the copper that is 50 parts by weight, stand-by. Then carry out vacuum melting. Silver and copper are put into the crucible in the melting furnace, and the melting furnace is heated and evacuated. When the vacuum in the melting furnace reaches 1.0 x 10MPa, stop vacuuming and heat the diffusion pump, and the heat generated by the diffusion pump will force the gas in the melting furnace out. After that, continue to evacuate the melting furnace so that the vacuum in the melting furnace is 3.5 x 10 -2 MPa. Afterwards, increase the heating power to raise the temperature in the smelting furnace to 800°C to melt silver and copper into molten metal. Afterwards, keep the constant temperature for 8 minutes to completely release the gas in the molten metal. After that, filled with inert gas protection for 3 minutes; then
[0033] Do casting. First pour the alloy mel...
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Abstract
Concretely, the invention relates to method for producing sealing strip in use for seal between metallized ceramics and oxygen free copper of magnetron in microwave oven. Using silver in 50 - 73 portions, and copper 27 - 50 portions, the method includes following steps: vacuum melting, casting, rinsing, turning and peeling off, roll cogging, middle rolling, annealing, finish rolling, clipping, punching and rinsing etc. The method reduces cost of production, guarantees consistency of products produced in volume production, and consistency of quality of magnetron.
Description
technical field [0001] The present invention relates to a solder and its production method. Specifically, it is a production method of a sealing sheet for sealing and welding between magnetron metallized ceramics and oxygen-free copper on a microwave oven. Background technique [0002] It is known in the microwave oven production industry that the microwave oven magnetron is metallized ceramics, and its anode and cathode are oxygen-free copper, so the welding requirements between oxygen-free copper and metallized ceramics are relatively high. Otherwise, it is difficult to realize the high vacuum sealing between the oxygen-free copper tube and the metallized ceramics, and the high tensile strength of the oxygen-free copper tube and the metallized ceramics in the magnetron cannot be guaranteed. Because copper-silver alloy has good bonding performance and fluidity, copper-silver alloy plates are mostly used as sealing solder in the microwave oven production industry. The trad...
Claims
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IPC IPC(8): H01J9/28B23P15/00C22C5/08C22C1/02C22F1/14
Inventor 晏弘
Owner 晏弘