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China Reducing and Sizing Mill IntroductionAuthor : trueniu Time : 2017/07/08
Recent years, modern high-speed wire rod mill manufacturing technology is developing in the following trends, high rolling speed, high efficiency, no twist and micro-tension combination, high accuracy, according to many years experience, our company digest the high tech aboard, we develop our own Reducing and Sizing Mill (RSM) manufacturer which makes us the first and best company in China who made RSM.
Reducing and Sizing Mill Designing Concept
The whole set of machine has the following advantages, high speed, well-controlled high accuracy rolling, who set exchangeable, two reducing mills and two sizing mills is assembled right behind the finishing mill, by using the extension of RSM, the speed of 8 finishing mill stands are much lower, which also reduce the rise of temperature form high-speed wire rod zone, by this we can achieve high speed low temperature rolling, ensure the final product mechanical property.
The RSM is located right between the finishing mill and laying head, the material cools down rapidly in the big water tank so that we can control the temperature of material into the RSM, use hot machine rolling tech to improve the inside structure of wire rod enhance the mechanical property and surface quality.
We use the traditional oval-circle type system for the whole production line groove design, the material surface can be flexibly adjusted cause the RSM had significant reduction rate, then remarkably reduce the roll and collars storage, simplified the collars management, reduce the exchanging times, enhance rolling efficiency.
The final products through the RSM, are with high accuracy, the dimensional tolerance is assured around ±0.1 mm, ovality is around 60% of the whole declination.
The Main Characteristic of Reducing and Sizing Mill
The RSM is composed of 4 cantilever type rolling mills, allocated by V type, the first two are reducing mill, the last two are sizing mill, using oval-round-round groove system, which can achieve high accuracy products, the RSM is driven by an AC motor gearbox, which has 9 clutches, when rolling difference products, can switch the clutch position, can satisfy different technology requirements, with designing of reasonable roll gaps, can ensure micro tension rolling for RSM, which ensure the high accuracy final products.
Reducing mill max rolling power max rolling power is 330KN, sizing mill max rolling power is 130KN, the biggest designing speed is 140 m/s, ensured rolling speed is 112 m/s, for satisfy the high speed rolling requirement, sizing mill use compact design, two sizing mill has 150 mm center distance, small triangle guide is assembled between two sizing mills, which reduce risk of steel piling, and also avoid machine shutting down because of rolling guide made roller bear damaged, to ensure the rolling accuracy, sizing mill has roller adjusting and hydraulic devices, can adjust the rolling line.