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存在于轧辊内的缺陷,对于轧辊的安全运行和使用寿命有着严重的影响。为了避免有缺陷的轧辊在淬火时开裂,确保产品的质量,须对轧辊进行严格的检验。轧辊中常见缺陷有:横向裂纹、轴心裂纹、严重疏松、蜂窝状缩孔(铸件)等。某些合金钢轧辊中存在着分散的非金属夹杂物、连续性夹渣、缩管及缩管残余,也是造成轧辊报废的原因。本文就把这些缺陷的探测经验,提供有关方面参考:缺陷性质的确定一、横向裂纹:按其形成的部位可归纳为三种:位于轧辊小直径内;位于轧辊大直径内;位于轧辊大、小直径的轴颈处。在轧辊中横向内裂纹大多数是单独
The defects that exist in the roll have a serious impact on the safe operation and service life of the roll. In order to avoid defects in the cracking of the roll quenching to ensure product quality, the roll to be strictly tested. Common defects in the roll are: horizontal cracks, axial cracks, severe loose, honeycomb shrinkage (castings) and so on. Some alloyed steel rolls have scattered non-metallic inclusions, continuous slag inclusions, shrinkage and shrinkage residuals, which are the causes of scrapped rolls. In this paper, the detection of these defects experience, to provide relevant reference: Determine the nature of defects First, the transverse cracks: According to the formation of the site can be grouped into three: located within the small diameter roller; located in the large diameter roller; Small diameter journals. Most of the transverse cracks in the roll are separate