层状撕裂焊接时，在焊接构件中沿钢板轧层形成的呈阶梯状的一种裂纹。
本文对厚板钢材的选材及防止钢结构厚板的层状撕裂具有一定的指导意义。
It was expected that this paper might guide the selection of thick steel plate and the prevention of lamellar tearing in steel structures.
钢材中含硫量越多，夹杂物以片状形态大量密集于同一平面，发生层状撕裂的倾向就越大。
If there is more sulfur in the steel and the steel contains many inclusions with flake configuration in the same plane with high density, lamellar tearing tends to happen with high probability.
试验结果表明，该吊点用钢在厚度方向上无论是塑性还是韧度均较低，存在层状撕裂倾向。
It was found that all of the plasticity and toughness of the steel in thickness direction are poor and the lamellar tearing was occurred.
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