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Comprehensive Process Presentation: A Complete Interpretation of Roll Production Lines from Smelting to Machining
Release Time：
2025-05-08
Rollers, as crucial components of rolling mills, play a pivotal role in the metal processing industry. Their quality and performance directly impact the precision and surface quality of rolled products. This article will provide a detailed explanation of the comprehensive processes involved in roller production lines, from smelting to machining, presenting the entire manufacturing process of rollers to the reader.
Rollers, as crucial components of rolling mills, play a pivotal role in the metal processing industry. Their quality and performance directly impact the precision and surface quality of rolled products. This article will detail the comprehensive process of roller production lines, from smelting to machining, presenting the entire manufacturing process of rollers to the reader.
Raw Material Preparation and Smelting
The primary raw materials for rollers are high-strength alloy steels, possessing characteristics such as high hardness, high wear resistance, high corrosion resistance, and good thermal conductivity. Commonly used materials include high-speed steel, alloy steel, carbon steel, and alloy cast iron, especially ductile iron rollers, whose smelting methods are unique.
The smelting of ductile iron rollers begins with batching, calculated at a ratio of 40-45kg of carburizer per ton of scrap steel. 75-85% of the total carburizer is added to the bottom of the medium-frequency induction furnace, with the remaining carburizer added to the furnace along with the scrap steel, and manganese iron is added simultaneously for smelting. After smelting, the molten iron is treated with quicklime in a ladle for slag removal, then returned to the medium-frequency induction furnace, where ferrosilicon is added to adjust the alloy composition and temperature. In the pouring ladle, on the backwater side, spheroidizing agent, ferrosilicon, and silicon-zirconium alloy are added sequentially before tapping. After tapping, ferrosilicon is further added to the molten iron surface. During roller casting, ferrosilicon is added again with the flow of liquid. This method not only reduces production costs but also yields roller products with excellent mechanical properties.
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