A heat treatment method for nuclear island super large cross-section forgings

A heat treatment method and super technology, applied in the field of heat treatment, can solve the problem of inability to measure the heat treatment process on-line
CN106222387BActive Publication Date: 2018-09-07SUZHOU NUCLEAR POWER RES INST +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU NUCLEAR POWER RES INST
Publication Date
2018-09-07

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Abstract

The invention relates to a heat treatment method of a nuclear island ultralarge section forging. The method comprises the following steps: (b) preheating treatment: the nuclear island ultralarge section forging is heated from room temperature to 880-910 DEG C for insulation, and then is dipped in water for cooling; (c) thermal refining: scales on the surface of the nuclear island ultralarge section forging treated in the step (b) are removed; and the nuclear island ultralarge section forging is heated from room temperature to 740-890 DEG C for insulation, and then is cooled by water; and (d) tempering: the nuclear island ultralarge section forging treated by the step (c) is heated from room temperature to 615-645 DEG C for insulation, and then is cooled along with a furnace to reach the room temperature. The method can guarantee full austenitizing of the part with the largest thickness, is finer in grains, can effectively prevent hot cracks and cold cracks, and greatly improves the yield of finished products.
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Description

technical field

[0001] The invention belongs to the field of heat treatment methods, and in particular relates to a heat treatment method for a nuclear island super-large section forging. Background technique

[0002] As the concept of low-carbon environmental protection is becoming more and more popular, nuclear power, a clean energy source, has attracted more and more attention from all countries. my country has carried out localization of nuclear power equipment since the end of the last century, and the main equipment of the nuclear island of the second-generation nuclear power plant reactor has been fully localized. The main equipment of the third-generation nuclear power and Hualong No. 1 nuclear power unit with independent intellectual property rights Nationalization stage. With the improvement of the power of the new reactor type and the latest requirements of nuclear safety, the design of the important components of the nuclear island is also developing in the direc...

Claims

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