热轧板材表面氧化铁皮压入缺陷的形成原因和控制措施

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REASONSAND CONTROLMEASURESFORTHE FORMATIONOFIRONOXIDESCALEINDENTATION DEFECTSONTHE SURFACEOFHOT-ROLLEDPLATES

Zhao Yan

（Vocational and Technical Education Center， Yongnian istrict Handan O5715o，China）

Abstract：As an importantrawmaterialfor industriessuchasmarine，transportation，energy，and pressure vesels，the mechanical properties and dimensional accuracyof hot-rolled plates and stripshave alwaysbeen important indicators for evaluating their quality. However， with the continuous transformation and upgrading of China's manufacturing industrytowards high-end，end manufacturing users havealsoput forward more stringent requirements forthesurface qualityof steel.Due to surfacequalitydefects，a large numberof steel products produced bysteel enterprises havebeen downgradedorscrapped，bearinghighermanufacturingosts.Theimportantfactoraffectingthesurfacequalityofsteel is the indentationdefect ofoxidescale.Surface oxide scale isan inevitable product inthe production process ofhot-roled platesandisalsooneof theimportantfactorsaffectingsurface quality.Inresponse tothecurrntsituationof ironoxide scale indentation defects inthe production processof hot-rolled plates，this articleanalyzes the qualityof descaling water，high-pressuredescaling pressure，the morphologyand formation mechanism ofiron oxide scale，and studies the control of slab heating and roling proces. Measures to reduce the qualitydefects of iron oxide scale indentation on the surface are proposed，and corrsponding optimization plans and preventive measures are formulated based on the analysis results， effectively improving the surface quality of hot-rolled plates.

Keywords：hot rolled sheet metal; iron oxide scale; formation reasons;control measures

0前言

氧化铁皮压入缺陷几乎成为了热轧板材生产过程的一大常态，所谓的氧化铁皮压人缺陷是指板坯在加热和轧制过程中因受热氧化而产生的薄层氧化物被压入轧件中，尤其是一次和二次氧化铁皮压入缺陷。（剩余5326字）