余隆仁
幼苗
共回答了10个问题采纳率:100% 举报
Pipe ring (1) the path to the butt welded joint of transillumination layout
Small tube with double-wall double transillumination decorate, while at the same time satisfy the following two conditions should be tilted transillumination mode elliptic imaging
A) T (wall thickness) 8 mm or less
B) g (weld width) D0/4 or less
Elliptical imaging, should control affect the opening width of the (weld projection maximum spacing) up and down at about 1 times the width of the weld.
Do not meet the above conditions or elliptical imaging have difficulty can adopt vertical transillumination mode overlapping imaging.
1年前
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