A method for manufacturing a fluid-tight cover for a nuclear power voltage stabilizer
A technology of fluid sealing and manufacturing methods, which is applied in the direction of manufacturing tools, forging/pressing/hammering machinery, forging/pressing/hammer devices, etc., which can solve the problems of large machining allowance, long processing cycle, and high manufacturing cost, and achieve The effect of small machining residue, short processing cycle and low manufacturing cost
Active Publication Date: 2021-08-27
GUIZHOU AEROSPACE PRECISION PRODS
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Problems solved by technology
At present, the products produced by forging are cut off due to the fiber direction inside the forging, which not only reduces their comprehensive mechanical properties and service life, but also requires a lot of time for machining due to the large machining allowance, and also causes waste of raw materials; However, casting is used for molding, and there is a problem of uneven distribution of material structure, resulting in comprehensive mechanical properties that cannot meet the manufacturing requirements of pressure vessels.
These two methods are made by mechanical processing to remove excess metal, which has large machining allowance, long processing cycle, large material waste and high manufacturing cost.
Method used
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Embodiment
[0033] Refer to attached Figure 1 to Figure 17 , this embodiment provides a method for manufacturing a fluid-tight cover for a nuclear power voltage stabilizer, the mold used in the method includes an oval flange upsetting disc 1, a preformed lower die 2, a preformed upper punch 3, and a formed lower die 4 and forming punch 5, the specific method is as follows: First, the forging blank is first forged on the free forging press, and the upper and lower Harvards are used to elongate it into a bar-shaped forging with a circular cross-section, and then the bar-shaped blank is Divide the material, keep one end as it is, and continue to use the upper Haval and lower Haval to elongate and round the other end until a stepped forging is formed, and then put it into the oval flange upsetting plate 1 for upsetting, and then the upsetting The blank 6 is put into the preforming lower die 2, and the preforming lower die 2 is placed on the lower anvil of the hydraulic press. At the same tim...
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The invention provides a method for manufacturing a fluid sealing cover for a nuclear power voltage stabilizer. Aiming at the problems and disadvantages of the fluid sealing cover for a nuclear power voltage stabilizer forged by the traditional method and the characteristics of the product itself, it provides a method that can make the fiber direction of the forging Conformal distribution, small machining allowance, improved mechanical performance and service life, high temperature, high pressure and corrosion resistance, low cost mold and forging method of fluid seal cover for nuclear power voltage stabilizer. It belongs to the field of forging technology.
Description
technical field [0001] The invention relates to a method for manufacturing a fluid sealing cover for a nuclear power voltage stabilizer, and belongs to the technical field of forging. Background technique [0002] The fluid seal cover is a deep cavity and wide flange-shaped structural part used on nuclear equipment voltage stabilizers. It has very high requirements for high temperature resistance, high pressure, corrosion resistance, low internal defects, and comprehensive mechanical properties. The traditional manufacturing method of the fluid distribution cover is generally formed by forging a solid forging, and then drilling and turning the excess internal allowance; or forming by casting. At present, the products produced by forging are cut off due to the fiber direction inside the forging, which not only reduces their comprehensive mechanical properties and service life, but also requires a lot of time for machining due to the large machining allowance, and also causes ...
Claims
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IPC IPC(8): B21J5/02B21J5/08B21J1/06B21J13/02B21K29/00
CPCB21J1/06B21J5/02B21J5/08B21J13/02B21K29/00
Inventor 杜力军李维白玉康何昌福彭南宁邱美芳
Owner GUIZHOU AEROSPACE PRECISION PRODS