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目前,由于轧材产量的提高、轧辊需求量的增加,以及轧辊生产能力的不足,在苏联及国外越来越广泛地采用堆焊法修复轧辊。本文的目的仅以研究堆焊金属的异向性对9XФ钢支承辊工作能力的影响,并且根据所获结果,制订适合于新利佩茨克钢铁公司2000毫米热轧机轧辊的修复方案。众所周知,焊缝金属具有十分明显的异向性,而这种异向性取决于焊池初次结晶的特点。文献中阐明,考虑堆焊金属的异向性可以使修复件的耐磨性能提高1～2倍;同时,对应轧辊工作面的取向柱状晶轴具有重大的意义。文献中指出,当改变柱状晶轴和
At present, due to the increase of the rolling stock, the increase of the demand of the rolls and the lack of the production capacity of the rolls, the surfacing welding is more and more widely used to repair the rolls in the Soviet Union and abroad. The purpose of this paper is to study the effect of weld metal anisotropy on the workability of 9XФ steel backup rolls and to develop a remediation plan suitable for the 2000 mm Hot Rolling Mill for the new Lipetsk Steel based on the results obtained. As we all know, the weld metal has a very significant anisotropy, and this anisotropy depends on the characteristics of the initial crystallization of the weld pool. The literature shows that considering the anisotropy of the surfacing metal can improve the wear resistance of the repaired parts by 1 to 2 times. Meanwhile, the orientation of the columnar crystal axis corresponding to the working face of the roll is of great significance. The literature points out that when changing the columnar crystal axis and