BAIJIAN - Third party testing organization
During fusion welding、 the ratio of the weld width (c) to the calculated weld thickness (s) on the cross-section of a single weld seam is called the weld seam forming coefficient、 which is c/s. When the weld seam forming coefficient is small、 a narrow and deep weld seam is formed. In the center of the weld seam、 due to regional segregation、 a large amount of impurities will accumulate、 resulting in poor thermal crack resistance. Therefore、 the forming coefficient value cannot be too small. For example、 in automatic submerged arc welding、 the weld seam forming coefficient should be greater than 1.3、 The width of the weld seam should be at least 1.3 times the calculated thickness of the weld seam
Function of testing report:
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