CAJ | 학술논문

介绍了核电项目中落锤试验的应用情况，针对落锤试验起裂焊道问题，研究了起裂焊道的制备要求，研究发现：采用双道焊，有可能造成无塑性转变温度的降低；起裂焊道焊接电流也对落锤试验结果有显著影响。并得出了起裂焊道制备原则：应保证起裂区域具有足够的脆性，在落锤冲击作用下能够开裂。在此基础上，提出了起裂焊道制备偏离问题的建议和处理方法，并结合实际案例加以说明。
개소료핵전항목중락추시험적응용정황，침대락추시험기렬한도문제，연구료기렬한도적제비요구，연구발현：채용쌍도한，유가능조성무소성전변온도적강저；기렬한도한접전류야대락추시험결과유현저영향。병득출료기렬한도제비원칙：응보증기렬구역구유족구적취성，재락추충격작용하능구개렬。재차기출상，제출료기렬한도제비편리문제적건의화처리방법，병결합실제안례가이설명。
Drop-weight test,its applications and some problems for nuclear projects were discussed.The requirements for crack-starter weld of drop-weight specimen were studied,it is found that performing double-weld may decrease nil-ductility transition ( NDT) temperature,and welding current has a great influence on drop-weight test result.The principle of crack-starter weld is deduced that the crack-starter zone should be brittle enough that could be cracked by strike of drop-weight,which eventually leads to the solutions to the problem mentioned above.