新型燃料组件下管座精密铸造工艺

钟建伟; 盛国福; 佘桂锋; 谢志刚; 余国严; 王惠生

doi:10.15980/j.tzzz.2020.10.014

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新型燃料组件下管座精密铸造工艺
Investment Casting Process for New Fuel Assembly Bottom Nozzle
2020年40卷第10期页码：1110-1113
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.10.014

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[1]钟建伟,盛国福,佘桂锋,谢志刚,余国严,王惠生.新型燃料组件下管座精密铸造工艺[J].特种铸造及有色合金,2020,40(10):1110-1113.

Zhong Jianwei, Sheng Guofu, She Guifeng, et al. Investment Casting Process for New Fuel Assembly Bottom Nozzle[J]. Special Casting & Nonferrous Alloys, 2020,40(10):1110-1113.
[1]钟建伟,盛国福,佘桂锋,谢志刚,余国严,王惠生.新型燃料组件下管座精密铸造工艺[J].特种铸造及有色合金,2020,40(10):1110-1113. DOI： 10.15980/j.tzzz.2020.10.014.

Zhong Jianwei, Sheng Guofu, She Guifeng, et al. Investment Casting Process for New Fuel Assembly Bottom Nozzle[J]. Special Casting & Nonferrous Alloys, 2020,40(10):1110-1113. DOI： 10.15980/j.tzzz.2020.10.014.

摘要

新型燃料组件下管座采用铁素体含量为10%～30%的奥氏体不锈钢铸造。针对下管座铸件特点及技术要求

采用精密铸造生产下管座。结果表明

通过优化的浇注系统

选用热膨胀系数低的进口专用光敏树脂作为蜡模原材料

型壳涂刷严格控制浆料配比及粘度

用碱煮脱芯法对型壳进行清理等工艺改进

成功生产出新型燃料组件下管座。

Abstract

New fuel assembly bottom nozzle was manufactured with austenite duplex stainless steel containing 10% to 30% ferrite.According to the bottom nozzle characteristics and the technical requirements

the investment casting process was adopted.The results show that new fuel assembly bottom nozzle is produced successfully by optimizing the gating system

selecting the imported photopolymer resin with low thermal expansion coefficient as the raw material for the wax model

strictly controlling the slurry ratio and viscosity in casting surface coating stage

cleaning the shell with alkali boiling and core removal

and other improved casting processes.