In this paper,the weldability and HAZ toughness of 20HR thick plate were studied , the experimental results provided the basis for making up the welding procedures of nuclear power equipment.

• 对大厚度20HR钢的焊接性及焊接热影响区(HAZ)韧性进行了试验研究,为核电设备焊接工艺的制定提供了依据。