Resistance welding — Destructive testing of welds — Specimen dimensions and procedure for mechanized peel testing resistance spot, seam and embossed projection welds
电阻焊.焊缝的破坏性试验.机械剥离试验用试样尺寸和程序
发布日期:
2016-03-03
ISO 14270:2016规定了对厚度为0.5 mm至3 mm的任何金属材料的重叠板材中的单点、接缝和压花凸焊进行机械化剥离测试的试样尺寸和测试程序,其中焊缝的最大直径为7√t(其中t是以mm为单位的板材厚度)。
对于直径在5√t和7√t之间的焊缝,当使用推荐的试样尺寸时,获得的剥离强度值可能低于预期,因为试样宽度是为直径为5√t或更小的焊缝设计的。
机械化剥离测试的目的是确定测试样品可以承受的剥离强度。
ISO 14270:2016 specifies specimen dimensions and a testing procedure for mechanized peel testing of single spot, seam and embossed projection welds, in overlapping sheets, in any metallic material of thickness 0,5 mm to 3 mm, where the welds have a maximum diameter of 7√t (where t is the sheet thickness in mm).
For welds of diameter between 5√t and 7√t, the peel strength values obtained may be lower than expected when using the recommended test specimen dimensions because the test specimen width is designed for welds of diameter of 5√t or less.
The object of mechanized peel testing is to determine the peel strength that the test specimen can sustain.