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Overlay welding for corrugating roll

  • Tang Shao-yan 
  • Liu Yue-jun Email author
Article
  • 72 Downloads

Abstract

The effects of chemical compositions and microstructures on wearability properties of overlaid corrugating roll were studied, and the factors governing the hardness and the wearability of overlaid layer were explored. The results show that the hardness and wearability of the overlaid layer significantly rise with the increase of the mass fraction of various types of eutectic, but the crack-resistance falls. The chief factor governing the hardness of overlaid layer is the matrix microstructure, especially the amount of austenite; and the second is the amount of carbide. The principal factor governing the wearability of overlaid layer is the amount of special carbide, particularly the amount of eutectic; and the second is the hardness of overlaid layer. Meanwhile, high alloying electrodes may cause the gear-surface hardness of corrugating roll to be higher than 63HRc, and may enhance the wearability of the gear-surface of corrugating roll by a factor of 5.63 and 9.08.

Key words

corrugating roll overlay welding overlaid layer overlaying electrode 

CLC number

TG174.44 

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Copyright information

© Central South University 2006

Authors and Affiliations

  1. 1.Key Laboratory of New Material and Technology for PackageZhuzhou Institute of TechnologyZhuzhouChina
  2. 2.State Key Laboratory of Powder MetallurgyCentral South UniversityChangshaChina

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