Application of Nb-V microalloyed high carbon steel in steel wire for flexible flat-top card clothing

doi:10.13251/j.issn.0254-6051.2022.01.012

Abstract

Abstract: Changes of basic properties of the 72B steel wires before and after the addition of niobium were analyzed by comparing the microstructure, tensile curves, and number of bends before fracture of the steel wires. The results show that comparing with 72B steel wire, the grain size grade of the steel wire product with Nb addition increases from 12.5-13 to 14-14.5. At the same time, the yield strength increases by 20.7% from 1745.8 MPa to 2108 MPa, and the tensile strength increases by 14.4% from 1930.7 MPa to 2209.5 MPa. The bending test shows an increasement of 28.2% from 1041 to 1335 before the fracture. These improvements imply the possibility to have higher wear resistance and significant improvement in the life span of the flat top card clothing when the steel wire is applied in the operating environment. Such improvement has been verified by the field experiments, i.e., the life span of the flat top card clothing made of the new niobium microalloyed steel wire is improved by 30%.

Key words: niobium, microalloying technology, high carbon steel wire, flexible flat-top card clothing

CLC Number:

TG135⁺.6

Zhuo Chengzhi, Gao Li, Gu Weihua, Yong Qilong, Lu Zhong. Application of Nb-V microalloyed high carbon steel in steel wire for flexible flat-top card clothing[J]. Heat Treatment of Metals, 2022, 47(1): 69-72.

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