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Inconel substrate and method for preparing inconel water chamber partition of steam generator
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A steam generator, Inconel technology, applied to the primary side of steam generators, nuclear power generation, manufacturing tools, etc., can solve the problems of high cost, large volume, and extremely strict performance requirements of water chamber partitions, and reduce production. cost effect
Active Publication Date: 2017-11-10
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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[0002]
The water chamber partition is the part that divides the coolant inlet and outlet in the steam generator. The performance requirements for the water chamber partition are extremely strict. In some nuclear island equipment, Inconel 600 (Inconel600) should be used as the water chamber partition. However, the volume of the water chamber separator is relatively large, and the cost of customizing a whole piece of Inconel 600 water chamber separator with a large enough volume is extremely high, and due to the characteristics of Inconel 600 itself, if the volume is too large, it is easy to cause Its performance has unpredictable defects. In addition, as a water chamber partition, the maximum deformation in the thickness direction cannot exceed 2.0mm; therefore, so far, the use of Inconel 600 to prepare water chamber partitions on nuclear island equipment A program is still only at the theoretical level
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preparation example Construction
[0062] Inconel substrate for preparing steam generator Inconel water chamber separator provided by the present invention, such as figure 1 and figure 2 As shown in , the substrate includes a plurality of Inconel plates 1 welded together,
[0063] Welding grooves are provided on the edge of each Inconel sheet 1, and two adjacent Inconel sheets are spliced to form a double V-shaped groove 2;
[0064] Solder 3 is filled in each double V-shaped groove, so that multiple Inconel plates 1 are connected to form an Inconel substrate.
[0065] In a preferred embodiment, the size and shape of each Inconel plate 1 are consistent, and the arrangement direction of each Inconel plate 1 is consistent, so that the welding heat is evenly distributed, which is convenient for controlling welding thermal deformation and preventing welding Thermal deformation is too large.
[0066]Specifically, the Inconel plate 1 is in the shape of a cuboid with six faces, and two of them face each other, an...
experiment example
[0113] Select two Inconel plates made of Inconel 600 with the same size and shape, and weld the two Inconel plates. The following steps are used for welding:
[0114] Sub-step a: Splicing two Inconel sheets together to form a double V-groove,
[0115] Sub-step b: root welding;
[0116] Sub-step c: The main viewing surface of the plate to be welded faces upwards, welding 4 layers,
[0117] Sub-step d: Flip the plate to be welded so that its rear view faces up, and weld 5 layers,
[0118] Sub-step e: Turn over the plate to be welded so that its main view faces upward, and weld 2 layers,
[0119] Sub-step f: Flip the plate to be welded so that its rear view faces up, and weld 2 layers,
[0120] Sub-step g: Turn over the plate to be welded so that the main view faces upward, and weld 2 layers,
[0121] Sub-step h: Flip the plate to be welded so that its rear view faces up, and weld 2 layers,
[0122] Sub-step i: Turn over the plate to be welded so that the main view faces upw...
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Abstract
The invention discloses an inconel substrate and a method for preparing an inconel water chamber partition of a steam generator. The method comprises the steps that the inconel substrate is spliced through welding, the inconel substrate is further processed through cutting, grinding, and the like, and finally, the inconel water chamber partition is obtained, wherein the inconel substrate comprises a plurality of inconel panels of which the size and shape are consistent; the inconel panels are arranged side by side on the same horizontal plane; and the arrangement directions of the inconel panels are consistent. According to the method, the specific welding sequence and welding technology are combined, the maximum thermal deformation amount of the inconel substrate in the thickness direction during the welding process is 1.6 mm or below, and the utilization requirement of the inconel water chamber partition is met.
Description
technical field [0001] The invention relates to an Inconel water chamber partition for a steam generator, in particular to a method for splicing and welding the Inconel water chamber partition for a steam generator. Background technique [0002] The water chamber partition is the part that divides the coolant inlet and outlet in the steam generator. The performance requirements for the water chamber partition are extremely strict. In some nuclear island equipment, Inconel 600 (Inconel600) should be used as the water chamber partition. However, the volume of the water chamber separator is relatively large, and the cost of customizing a whole piece of Inconel 600 water chamber separator with a large enough volume is extremely high, and due to the characteristics of Inconel 600 itself, if the volume is too large, it is easy to cause Its performance has unpredictable defects. In addition, as a water chamber partition, the maximum deformation in the thickness direction cannot exc...
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