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Outer strip forming method of TVS-2M positioning grillwork

A TVS-2M, spacer grid technology, applied in the field of fuel assemblies, can solve the problems of poor chamfer surface roughness, difficult to standardize and unify chamfer size and shape, and difficult to unify chamfer shape and size. Improved ratio, accurate chamfer size and shape, and good chamfer surface roughness

Active Publication Date: 2016-07-20
CNNC JIANZHONG NUCLEAR FUEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The above-mentioned outer strip chamfering method uses a file to remove excess material, which is a purely manual operation, which makes it difficult to achieve standardization and uniformity in the size and shape of the chamfer, especially in the transition section where the chamfer gradually shrinks. The shape and size of the chamfer are not easy to be uniform
Moreover, the production efficiency of manually chamfering the outer strips is also very low
In addition, due to manual filing, the roughness of the chamfered surface is poor

Method used

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  • Outer strip forming method of TVS-2M positioning grillwork
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  • Outer strip forming method of TVS-2M positioning grillwork

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Embodiment 2

[0048] The difference between this embodiment and Embodiment 1 is that the processing is a cold stamping processing method.

Embodiment 3

[0050] The difference between this embodiment and embodiment 2 is that the location of the positioning hole is located in the material part that can be removed in the third step.

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Abstract

The invention belongs to the technical field of fuel modules, and in particular, relates to an outer strip forming method of a TVS-2M positioning grillwork. The outer strip forming method comprises the steps of primary machining, chamfering, shape blanking, guide wing bending, lap joint forming and groove molding through bending. The outer strip forming method solves the problem that the chamfering size and shape of an outer strip manufactured by a traditional manual filing chamfering method are difficult to reach the standard and the unification. The outer strip, manufactured by the chamfering method, is precise and unified in chamfering size and shape and excellent in chamfering surface roughness; and the production efficiency can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of fuel assemblies, and in particular relates to a method for forming strips outside a TVS-2M positioning grid. Background technique [0002] The outer strips of the positioning grid are an important part of the fuel assembly. At present, the outer strips are manufactured by manual filing, that is, the outer strips are first punched out with a mold, and then the upper and lower sides are cut out using the mold. The guide wing is bent, and then the mold is used to displace the overlap of the outer strip and the outer strip, and then the mold is used to bend the product twice at 120 degrees, and finally the 4 outer sides of the 120-degree bending part are manually filed. Chamfer to complete the chamfer of the outer strip. [0003] The above-mentioned outer strip chamfering method uses a file to remove excess material, which is a purely manual operation, which makes it difficult to achieve standardization and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D28/02B21D28/04
Inventor 叶远东钟鸣蒋庆谢志刚秦传玲郑志辉
Owner CNNC JIANZHONG NUCLEAR FUEL