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冷弯试验是工艺性能试验的主要方法之一,由于冷弯试验的试样加工方便,试验过程简单,因此在焊缝质量检查时已被广泛地应用。但是影响冷弯试验结果的因素颇多,一般常易忽视。同时,根据试验证明,冷弯试验不是一个评定焊接接头质量的适宜方法。目前各工厂在作冷弯试验时,尤其是焊工考试样品作冷弯检定时,常常发生问题;对于裂缝的评定因没有标准也常易引起争论。
Cold-bend test is one of the main methods of process performance test. Because of the easy processing and simple test process of cold-bend test, it has been widely used in weld quality inspection. However, many factors affect the results of cold-bend test, the general is often overlooked. In the meantime, according to the test, cold bending test is not a suitable method to evaluate the quality of welded joints. At present, when factories make cold-bending tests, especially welder test samples for cold-bending test, problems frequently occur. The evaluation of cracks is often controversial due to lack of standard.