Experimental study is carried out on the range of the oblique angle value in X-radio-graphic inspection of outer circumferential weld of U-shaped ring in LSF low pressure steam boiler.The effective length l of penetra...Experimental study is carried out on the range of the oblique angle value in X-radio-graphic inspection of outer circumferential weld of U-shaped ring in LSF low pressure steam boiler.The effective length l of penetration and its verge focal length f’as well as the penetration thicknessratio K under different conditions are calculated.Finally,the requirements for radiographic inspectionof the weld are given.展开更多
摘要Experimental study is carried out on the range of the oblique angle value in X-radio-graphic inspection of outer circumferential weld of U-shaped ring in LSF low pressure steam boiler.The effective length l of penetration and its verge focal length f’as well as the penetration thicknessratio K under different conditions are calculated.Finally,the requirements for radiographic inspectionof the weld are given.