Plastic forming process of integral top cover of nuclear power water chamber and intelligent forging press used by plastic forming process

Abstract

The invention discloses a plastic forming process of an integral top cover of a nuclear power water chamber and an intelligent forging press used by the plastic forming process. The plastic forming process comprises the following steps that: three-dimensional modeling is performed, so as to simulate a model, blanks are obtained by using large LCD (liquid crystal display) near-net forming, intelligent plastic forming is performed on the top cambered surface, and annular intelligent plastic forming is performed on the side surface of a cylinder. A vertical rack of the intelligent forging press is fixed on the ground, a movable cross beam is driven to longitudinally slide by a main working cylinder on the vertical rack, a rotary workbench can be rotatably positioned on a movable workbench of the movable cross beam around a vertical rotating shaft, a horizontal rack is driven to longitudinally move by a support cylinder on the vertical rack, a horizontal working cylinder on the horizontal rack corresponds to an intelligent auxiliary pressure head which can horizontally extend, an intelligent main pressure head can longitudinally extend and can be fixedly positioned on the vertical rack, and a sensing system is used for sensing the temperature of forgings, the pressure of the pressure heads and the metal flow information of the forgings. The integral top cover of the water chamber has the advantages of high precision, material saving, short processing cycle, high forging flexibility and low processing cost.

Description

technical field [0001] The present invention relates to a head, tee, valve body, flange for nuclear power, or other high-end heavy equipment plastic forming technology and rapid prototyping equipment for the head, tee, valve body, flange, especially a A plastic forming process of the integral roof of a nuclear power water chamber and its intelligent forging press. Background technique [0002] Nowadays, the global nuclear power industry has entered a period of rapid development. In order to improve the energy structure, all industrialized countries and developing countries are actively committed to the development of nuclear power. The current nuclear power industry has developed to the third generation of nuclear power technology, which uses AP1000 nuclear power plants. Among the equipment of this nuclear power plant, its key components (including pressure vessels, steam generators, etc.) are all made of forgings. Due to the low forging precision of the traditional free f...

AI Technical Summary

Problems solved by technology

Due to the low forging precision of the traditional free forging nuclear power forging process, a large machining allowance is formed; the forming ability is poor, and a large number of structures cannot be formed, and "dressing" is needed to simplify the forging, thus increasing the weight of the forging; more importantly, In order to ensure the "forging through" and ensure the implementation of various free forging process specifications, steel ingots that are several times the weight of the forging must be used, and material waste is very serious

These key components are not only huge in size, but also relatively complex in shape, so the manufacture of such large forgings is a major problem in the manufacture of nuclear power plants

The integral top cover of the water chamber in the steam generator (such as figure 1 As shown), due to its huge size, complex shape and high quality requirements, the existing technology has long manufacturing cycle, high processing cost and low efficiency

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