Nuclear power fuel assembly tube socket laser additional material forming manufacturing method

Abstract

The invention provides a nuclear power fuel assembly tube socket laser additional material forming manufacturing method. The method comprises the steps that 1, three-dimensional model design is performed on tube socket drawing paper to obtain a three-dimensional entity model; 2, support adding processing is performed on the suspended position of the obtained model; 3, layering slicing is performed on the model according to the certain thickness; laser powder, laser scanning speed and laser scanning interval parameters of an inner part of each layer of slices are designed; 4, the parameter data obtained in the step 3 is guided into laser selective melting forming equipment, base material leveling and gas washing operation are performed, and parts are started to be manufactured; 5, after the parts are manufactured, thermal treatment is performed on the parts, and internal stress of the parts is removed; 6, linear cutting is adopted for separating the parts from the base material. The pressurized water reactor nuclear power fuel assembly tube socket is rapidly repaired, and integral forming of the tube socket is achieved; the manufacturing period is equal to or shorter than 120 h, the tensile strength is 30% or more higher than that of a tube socket manufactured through a traditional technology, and the material utilization rate is larger than 99.0%.

Description

technical field [0001] The invention belongs to the technical field of manufacturing nuclear power fuel elements, and in particular relates to a laser additive molding manufacturing method for a tube seat of a pressurized water reactor nuclear power fuel assembly. Background technique [0002] The pipe seat is one of the important parts of the PWR nuclear power fuel assembly. There are two traditional processes. One is to use rolling block blanks, which are directly prepared by machining, and the other is to use precision casting methods for separate molding and then processing. , The procedures of the two processing methods are complicated and difficult. At the same time, the traditional processing technology still has problems such as low utilization rate of raw materials and long process development cycle. [0003] The use of laser additive molding technology for the preparation of the tube seat can solve the problems of complex procedures and low material yield in the t...

AI Technical Summary

Problems solved by technology

[0002] The pipe seat is one of the important parts of the PWR nuclear power fuel assembly. There are two traditional processes. One is to use rolling block blanks, which are directly prepared by machining, and the other is to use precision casting methods for separate molding and then processing. , the procedures of the two processing methods are complicated and difficult

At the same time, the traditional processing technology still has problems such as low utilization rate of raw materials and long process development cycle.

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