Manufacturing method of roll collar material of water cold furnace roller

Abstract

The invention provides a manufacturing method of a roll collar material of a water cold furnace roller, belonging to the technical field of steel rolling. The roll collar material of the water cold furnace roller is manufactured from a CoCr alloy material by adopting a vacuum melting process combined with a vacuum paraffin casting mould process, wherein the CoCr alloy material comprises the following components by weight percent: 0.220% of C, 1.400% of Si, 0.900% of Mn, 28.030% of Cr, 49.360% of Co, 0.050% of Nb, less than or equal to 0.019% of P, less than or equal to 0.06% of S and the balance of Fe. when the CoCr alloy material roll collar and the casting process thereof provided by the invention are used in a roll bottom type soaking pit furnace, the precipitation of carbides is effectively inhibited and delayed, the formation of net-shaped carbides is prevented, the strength and hardness of the roller collar are enhanced, the temperature resisting, and abrasion resisting and creep resisting properties of the roll collar are improved and the roll collar dose not generate steel-adhering and nodulation phenomena when hot blank is transmitted by silicon steel.

Description

technical field [0001] The invention relates to a newly developed roll ring material and a new casting method, which are mainly applied to the water-cooled furnace rolls of the soaking furnace of the continuous casting and rolling production line (CSP for short), so as to meet the requirements of the silicon steel slab conveying process in the high-temperature furnace. quality requirements in. Background technique [0002] The water-cooled furnace roll is an important equipment in the soaking furnace, and the roll ring is a key component that directly affects the product quality. The four heat-resistant steel roll rings on the water-cooled furnace roll that carry the billet are the most important and most easily damaged mechanical components in the water-cooled furnace roll. Since the roller ring is in a high-temperature environment for a long time and is eroded by various atmospheres in the furnace, when the material composition ratio of the roller ring is incorrect, the m...

AI Technical Summary

Problems solved by technology

The surface of the CrNi alloy roll ring used in the CSP production line has serious sticky steel nodules, which has caused quality problems such as surface scratches and internal slag inclusions on the strip product, hindering the normal production of high-temperature steel such as silicon steel.

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