A method for avoiding compartment prints produced by pickling of zirconium alloy cladding tubes for nuclear power

Abstract

The invention discloses a method for avoiding the grid marks produced by pickling of zirconium alloy cladding tubes for nuclear power, and belongs to the technical field of cladding tubes for nuclear power production. The method for avoiding the shelf marks produced by pickling zirconium alloy cladding tubes for nuclear power comprises the following steps: placement, first pickling, second pickling, second pickling, rinsing, standing, drying and storage . The method for avoiding the pickling of zirconium alloy cladding tubes for nuclear power to produce shelf marks can effectively avoid pickling shelf marks without affecting the quality of pickling, thereby ensuring the surface quality of zirconium alloy cladding tubes, and the operation is simple and convenient. Easy to replace shelf.

Description

technical field [0001] The invention relates to the technical field of production and manufacture of cladding tubes for nuclear power, in particular to a method for avoiding shelf prints caused by pickling of zirconium alloy cladding tubes for nuclear power. Background technique [0002] Zirconium alloy cladding tubes are usually small-diameter thin-walled tubes, which have extremely strict regulations on flaw detection requirements, surface defect inspection, outer diameter, wall thickness, and roughness. Therefore, the production process of the zirconium alloy cladding tube must be refined to ensure stable and controlled quality. [0003] When the zirconium alloy cladding tube is pickled, pickling baskets are used to load the tubes, and each layer of the tubes is separated by a shelf. The current problem is: when the zirconium alloy cladding tube is pickled, due to the insufficient pickling of the contact part between the spacer and the tube, the local removal amount is t...

AI Technical Summary

Problems solved by technology

The current problem is: when the zirconium alloy cladding tube is pickled, due to the insufficient pickling of the contact part between the spacer and the tube, the local removal amount is too small, which leads to the appearance of the spacer mark.

Small-sized spacer marks can be removed in the subsequent polishing process, but if the spacer marks are too large, it will be difficult to remove the polishing, and eventually the spacer marks will remain and cause surface defects on the pipe. Therefore, it is necessary to avoid the spacer during pickling of the zirconium alloy cladding tube print production

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