Application of a High Chromium Steel to Roughing Work Rolls for Hot Strip Mills.

Hiraoka, Haruo; Kataoka, Yuki; Yuda, Kouji; Taniguchi, Kazuyuki; Sasada, Mikio; Hishinuma, Itaru

doi:10.2355/isijinternational.32.1177

Cited by 6 publications

(1 citation statement)

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“…The ASTM standard classifies these alloys as abrasion-resistant because in the mining industry, which is the main user, such irons are used in a range of situations which are subject to varying conditions where the main wear mechanism is the abrasive one, that is crushing, screening, and pumping [52]. Furthermore, in the steel industry, Hi-Cr irons are widely used for rolls in hot rolling mills [54], where the mechanisms of damage are abrasion of the matrix and rolling contact fatigue [55,56]. Such deterioration of the rolls surface causes strip surface flaw [57].…”

Section: Niobium In White Ironmentioning

confidence: 99%

Niobium in Cast Irons

Bedolla-Jacuinde¹

2016

Progress in Metallic Alloys

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This work reviews the efect of niobium on diferent cast irons. This alloying element has a high ainity by carbon forming carbides of the type MC therefore, the main efect is to strengthen the matrix of the alloys due to a hard-phase dispersion mechanism. Even at low levels of niobium < . % , MC carbides are found. The presence of such carbides increases hardness, yield and tensile strength in ductile irons, but the most important role is to increase wear resistance. Therefore, the use of niobium has been focussed mainly in alloyed white irons for wear resistance applications and in motled cast iron used for rolls in hot rolling mills.

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