Blank assembling method for super-thick steel sheet production

The invention relates to a blank assembling method for super-thick steel sheet production. The method comprises the following steps of adopting two or more steel billets with the same steel type and different thicknesses as base blanks, welding the two or more steel billets into a composite blank, and rolling the composite blank into a finished product with the required thickness. According to theblank assembling method, the thickness difference of the two or more base blanks is used to enable the upper 1/4 position, the lower 1/4 position and the 1/2 position of the thickness of the finishedsteel sheet to be capable of simultaneously avoiding the 1/2 positions of the thicknesses of the base blanks, so that the uniformity and the stability of the mechanical property at the upper 1/4 position, the lower 1/4 position and the 1/2 position of the thickness of the finished steel sheet are improved. 本发明涉及一种生产特厚钢板的组坯方法，采用两块或多块相同钢种、不同厚度的钢坯作为基坯，将两块或多块钢坯焊接成一块复合坯，再将复合坯轧制成成品厚度，组坯方法是利用两块或多块基坯的厚度差异，使成品钢板厚度上1/4处、厚度下1/4处和厚度1