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MOX fuel rod end plug marking method

A fuel rod and end plug technology, which is applied in the field of MOX fuel rod end plug marking, to achieve the effects of improving material circulation efficiency, facilitating production information recording and material tracking, and enhancing practicability and applicability

Pending Publication Date: 2021-03-09
THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a marking method for MOX fuel rod end plugs, which solves the problem of recording coded information circulating between various process positions in the MOX fuel rod manufacturing process by identifying the logo

Method used

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  • MOX fuel rod end plug marking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step 1: Clean the end plugs. Completely immerse the end plug in alcohol with a purity greater than 99% for more than 2 minutes to remove surface contamination of the end plug. Take out the jig wiped with alcohol, and place it in a clean and ventilated place for about 10 minutes, so that the alcohol on the surface of the end plug can fully evaporate.

[0035] Step 2: Mark the digital code. Fix the end plug to the laser marker, exposing the outer surface CD segment of the tuning fork groove. Set the corresponding digital code in the marking control software: 001.

[0036] Set the laser power, frequency, marking speed, digital code position coordinates and other process parameters related to the marking process, and start marking. After the digital code marking on one side is completed, adjust the position of the end plug, and mark the digital code on the other side according to the same steps and process parameters.

[0037] Step 3: Mark the barcode. Fix the end plug...

Embodiment 2

[0039] Step 1: Clean the end plugs. Completely immerse the end plug in alcohol with a purity greater than 99% for more than 2 minutes to remove surface contamination of the end plug. Take out the jig wiped with alcohol, and place it in a clean and ventilated place for about 10 minutes, so that the alcohol on the surface of the end plug can fully evaporate.

[0040] Step 2: Mark the barcode. Fix the end plug to the clamping mechanism of the laser marking machine, exposing the AB section of the cylindrical surface of the non-pressed section of the end plug. Set the value represented by the barcode in the marking control software: 00002. Set the laser power, frequency, marking speed, barcode code position coordinates and other process parameters related to the marking process, and start marking.

[0041] Step three:

[0042] Mark the digital code. Fix the end plug to the laser marker, exposing the outer surface CD segment of the tuning fork groove. Set the corresponding dig...

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Abstract

The invention provides an MOX fuel rod end plug marking method, which comprises the steps: cleaning an end plug; marking a digital code; and marking bar code, and carrying out other steps. According to the invention, the digital code and the bar code are marked on the MOX fuel rod end plug at the same time, so that automatic recording of coded information in the fuel rod production process is achieved under the hot chamber shielding condition that manual intervention is inconvenient and direct, production information recording and material tracking are facilitated, the material circulation efficiency of the MOX fuel rod production line is improved, and the production efficiency is indirectly improved.

Description

technical field [0001] The invention belongs to the technical field of fuel rod manufacture, and in particular relates to a marking method for MOX fuel rod end plugs. Background technique [0002] The manufacture of MOX fuel rods involves multiple processes. Every time a fuel rod passes through a process in the manufacturing process, data records such as the code of the fuel rod must be left for future data tracking. Since the fuel rod manufacturing and transmission process of the MOX fuel assembly production line is mostly carried out in a closed chamber, and the MOX fuel rod has high radioactivity, manual data recording is inconvenient and inefficient. At the same time, manual visual identification of the fuel rod logo through the shielding window on the box room across the closed box room also has a greater possibility of misreading, leaving hidden dangers for future production tracking. Therefore, it is necessary to realize automation by recording the coding information...

Claims

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Application Information

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IPC IPC(8): G21C3/02G21C3/10G21C21/02
CPCG21C3/10G21C3/02G21C21/02Y02E30/30
Inventor 田志强屠振华张万德郭亮张顺孝杨廷贵马绍州李兵于永龙高汉亮邵柳波孙江李琪
Owner THE 404 COMPANY LIMITED CHINA NAT NUCLEAR
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