Luoyang Yujie Industry&Trade Co., Ltd is one of the most experienced manufacturers and suppliers of backup roll in China. Please feel free to buy cheap backup roll for sale here from our factory. All customized products are with high quality and competitive price.
The backup roll is an important part of the rolling mill, mainly used to support the working roll or the intermediate roll to prevent the working roll from bending and deforming during the rolling process, thereby affecting the output and quality of the plate and strip. The common material is is 42CrMo,45#,alloy steel,etc.
Products
Features
Its quality characteristics include high surface hardness of the roll body, good hardness uniformity, deep hardened layer of the roll body, good strength and toughness of the roll neck and the roll body, as well as high wear resistance, good anti-stripping and strong anti-accident resistance. These characteristics together ensure that the support roll can effectively support the working roll, maintain the smooth progress of the rolling process, and improve the surface quality and output of the plate.
Processing
The production process of large forged steel support rolls is: raw materials → steelmaking (electric furnace smelting, ladle refining) → vacuum ingot casting → forging → post-forging heat treatment → rough machining → first ultrasonic flaw detection → preliminary heat treatment (quenching and tempering) → semi-finishing → second ultrasonic flaw detection → final heat treatment (roller surface quenching and tempering) → finishing → comprehensive testing (including final ultrasonic flaw detection) → painting, delivery
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