Research on laser cutting technology of the anti debris plate

QIN Guopeng; ZHANG Liying; HUANGFU Hongbin

doi:10.7512/j.issn.1001-2303.2021.09.09

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Research on laser cutting technology of the anti debris plate
Vol. 51, Issue 9, Pages: 46-49(2021)
Published：2021
DOI： 10.7512/j.issn.1001-2303.2021.09.09
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DOI：

QIN Guopeng, ZHANG Liying, HUANGFU Hongbin. Research on laser cutting technology of the anti debris plate[J]. Eletric Welding Machine2021, 51(9): 46-49. DOI： 10.7512/j.issn.1001-2303.2021.09.09.

摘要

AISI 660防屑板是华龙一号HPR1000核燃料组件中用于过滤流体中碎屑以防止核燃料包壳磨蚀破损的堆芯重要功能件。防屑板外形约为220 mm×220 mm×3 mm见方的薄板

板上密集分布着近2 000个方形或圆形孔

孔的尺寸精度和位置度要求很高

加工难度大。从激光切割前处理、切割过程、关键工艺参数、切割后处理等方面研究了防屑板激光切割工艺过程及其关键特性

最终成功制定防屑板激光切割制造工艺。该研究为解决国产核燃料制造中的技术难题提供了新的研究思路和方向。

Abstract

The anti debris plate of AISI 660 is an important core functional part of HPR1000 nuclear fuel assembly

which is used to filter the debris in the fluid to prevent the abrasion and damage of the nuclear fuel cladding. There are nearly 2 000 square or circular holes on the anti debris plate with the overall dimension of about 220 mm square sheet. The size accuracy and position of the holes are very high

so it is difficult to process. In this project

the laser cutting process and its key characteristics are studied from the aspects of laser cutting pretreatment

cutting process

key process parameters

and post-processing. Finally

the laser cutting anti debris plate samples and supporting manufacturing process are successfully trial produced. This research provides a new research idea and direction for solving the technical problems in domestic nuclear fuel manufacturing.