异型坏连铸坯翼缘横裂纹控制研究

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关键词：异型坏；翼缘横裂纹；连铸工艺；质量控制

DOI ：10.26915/j.issn1003-0514.2025.05.013

中图分类号：TF777.2 文献标识码：B 文章编号 ：1003-0514（2025）05-0052-05

Research on Control of Transverse Cracks in Web of Control-cast Slabswith NonstandardShapes

Wu Xupeng，Gao Zhibin，Hou Guangda， Wang Chenglong，Liu Zhongjian （Steel Plant of Laiwu Branch of Shandong Iron and Steel Co.，Ltd.，Jinan 2711OO，China）

Abstract：Thispaper conducts in-depth researchon the transverse crack intheflange of the non-standard billetcast by continuouscasting.Firstly，theimportant positionofnon-standardbiletinironandsteelproductionandtheserious harm causedbythetransversecrackinthflange toproductqualityareelaborated.Thecausesofthe transversecrackintheflange areanalyzedindetail，includingunevenshellgrowth inthecrystallze，unreasonablecoolingsysteinthesecondarycooling Zone，the influence of steel grade composition and performance，and fluctuations incontinuous casting process parameters. Basedonthis，aseriesofcorrespondingcontrol measuresare proposed，suchasoptimizing theflowfieldandtemperature field inthecrystalizer，improvingthesecondarycoling waterdistrbutionmodel，adjustingthesteel gadecomposition and processoptimization，and strengthening the monitoring andequipment maintenance ofthecontinuouscasting process. The efectivenessofthese control measures is verified byactual productioncases，providing theoretical basisand practical referenceforefectivelysolving thetransversecrack problemintheflangeof thenon-standard billtcastbycontinuous casting.Itisof greatsignificancetoimprovethequalityandproductioneficiencyofnon-standardbiletcastbycontiuous casting.

Key words：shaped billet；flange transverse crack；continuous casting process；quality control

1前言

异型坏作为一种特殊形状的连铸坏，在建筑、机械制造等众多领域有着广泛应用。（剩余6212字）