首页> 外国专利> MANUFACTURING METHOD OF STRUCTURAL ELEMENTS OF ACTIVE ZONE OF WATER-TO-WATER REACTOR ON SLOW NEUTRONS FROM LOW-ACTIVATED FERRITE-MARTENSITIC STEEL

MANUFACTURING METHOD OF STRUCTURAL ELEMENTS OF ACTIVE ZONE OF WATER-TO-WATER REACTOR ON SLOW NEUTRONS FROM LOW-ACTIVATED FERRITE-MARTENSITIC STEEL

机译:低活化铁素体-马氏体钢中慢速中子水-水反应器活性区结构元素的制备方法

摘要

FIELD: power industry.;SUBSTANCE: invention can be used during manufacture of structural elements - end parts of fuel assemblies, reactor basket, reflection shield, rods of control and protection systems, etc. of parts of active zone of water-to-water reactor. Workpiece from "15Х14С2ВФА" steel is subject to heat mechanical treatment and mechanical cutting; at that, there also performed is stepped heat treatment including the exposure of element at 930-950°C during 30-40 minutes, heating of the element surfaces contacting with heat carrier to 1050-1150°C, with heating rate of 0.5-100°C/min with exposure at this temperature during 0.1-20 min, hardening till layer thickness of hardened steel of 5 to 100 mcm is reached, steel tempering of the element at 680-760°C during 3 h to 20 min and cooling of the element.;EFFECT: providing high corrosion resistance in water and steam in the element metal surfaces contacting with heat carrier at service life of 5 to 60 years, and providing high resistance level in metal of inner part of the element to irradiation embrittlement at the same service life.;3 cl, 3 tbl, 1 dwg
机译:技术领域:本发明可用于制造结构元件-燃料组件的端部零件,反应堆篮,反射罩,控制系统的保护杆和保护系统的水对水活动区的零件等。反应堆。 “15Х14С2ВФА”钢制的工件需要进行热处理,机械切割和机械加工。此时,还进行了分步热处理,包括将元件在930-950°C下暴露30-40分钟,将与热载体接触的元件表面加热到1050- 1150°C,加热速率为0.5-100 °C / min,在此温度下暴露0.1-20分钟,硬化直至硬化钢的层厚达到5至100 mcm,元素在680-760°C的温度下回火3 h至20 min,并冷却效果:在5至60年的使用寿命中,在与热载体接触的元件金属表面上提供高的耐水和蒸汽腐蚀性能,并为元件内部的金属提供高耐蚀性。相同的使用寿命。; 3 cl,3 tbl,1 dwg

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