Forged steel cold-rolled working roll with roll mark resistance and manufacturing method of forged steel cold-rolled working roll

The invention discloses a forged steel cold-rolled working roll with roll mark resistance and a manufacturing method thereof. The manufacturing method comprises the following steps: smelting and forging a roll blank according to chemical components in percentage by weight, performing pre-heat treatm...

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Bibliographische Detailangaben
Hauptverfasser: JU XIANQIN, CHEN WEI, CUI HAIFENG, LI BEIYU, ZHANG QING
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses a forged steel cold-rolled working roll with roll mark resistance and a manufacturing method thereof. The manufacturing method comprises the following steps: smelting and forging a roll blank according to chemical components in percentage by weight, performing pre-heat treatment and performing final heat treatment, the steel comprises the following chemical components in percentage by weight: 0.88%-1.05% of carbon, 0.50%-0.90% of silicon, 0.10%-0.70% of manganese, less than or equal to 0.020% of phosphorus, less than or equal to 0.015% of sulfur, 2.60%-3.20% of chromium, 0.60%-0.90% of nickel, 0.10%-0.60% of molybdenum, 0.05%-0.40% of vanadium and the balance of iron and inevitable impurities. And the final heat treatment comprises surface quenching treatment at the temperature of 910-950 DEG C, subzero treatment at the temperature of-180--160 DEG C for 4-6 hours and low-temperature tempering treatment at the temperature of 80-150 DEG C for 60-150 hours. On one hand, by optimizing the