核电站蒸汽发生器管板深孔加工制造技术

Deep Hole Processing and Manufacture Technology for Steam Generator Tubesheet of Nuclear Power Plant

核电蒸汽发生器管板上孔的数量多,长径比大,极易出现加工质量问题,管板管孔深孔加工是核电站蒸汽发生器的关键制造工序。文中介绍了管孔深孔BTA加工的特点,总结了管孔深孔加工的关键工艺和质量控制方法,能够保证钻孔质量,提高管孔的合格率。

The number of holes in the tubesheet of nuclear power steam generator is great quantity,the ratio of depth to diameter is large,so the deep hole processing is key process in manufacturing.This paper introduces the characteristics of BTA tubesheet deep hole processing,summarizes the key technology and quality control method of tubesheet deep hole processing,which can guarantee the drilling quality,improve the qualified rate of tube holes.