2020-04-16
The production of 16 high speed steel rolls ordered by Philippine customers have been completed by Harbin TINVO and will be delivered soon. This is the first shipment of TINVO since the COVID19 outbreak in China. The TINVO factory will also complete other orders in succession, which includes products like electric furnace accessories, cast iron rolls, and roller rings, etc.
In order to ensure that all orders can be delivered as soon as possible, avoiding losses caused to overseas customers due to the COVID19 epidemic, when the epidemic in China has not ended, TINVO has actively resumed production in accordance with the national policy, quality and quantity guaranteed by the factory with the service tenet of customer satisfaction.
Specification of High Speed Steel Roll (HSS roll)
The dimension: This batch of HSS rolls is 330x700mm,
Hardness:85
Feature Of High Speed steel roll (HSS roll)
1. High-speed steel roll materials contain high alloy elements such as vanadium, tungsten, chromium, molybdenum, and niobium. The types of carbides in the roll structure are mainly MC and M2C. Comparing with ductile iron rolls with high-nickel-chromium rolls, the steel passing volume is high each time, which saves time of roll changing, improves mill operating efficiency and reduces production costs.
2. High-speed steel rolls have good thermal stability. At the rolling temperature, the roll surface has higher hardness and good wear resistance.
High-speed steel rolls have good hardenability, and the hardness from the surface of the roll body to the inside of the working layer rarely decreases, thereby ensuring that the rolls have equally good wear resistance from the outside to the inside.
3. During the use of high-speed steel rolls, under good cooling conditions, a thin and dense oxide film is formed on the surface of the roll body. This uniform, thin and dense oxide film can exist for a long time without falling off, making the high-speed steel rolls wear-resistant significantly improved.
4. High-speed steel rolls have a large material expansion coefficient and good thermal conductivity. The HSS rolls continue to shrink due to the expansion of the high-speed steel materials themselves. During the rolling process, the change of the rolling groove is small, and the consistency of the hole size is maintained for a long time, especially when rolling the bar or rebar, which is more conducive to controlling the negative tolerance of the rolling material.
5. The core of the centrifugally cast high-speed steel roll is made of alloy ductile iron, thus, the roll neck strength is strong.
Application Of High Speed steel roll (HSS roll)
The bar rolling mill, splitter mill rack, high-speed wire rod finishing mill, hot-rolled narrow strip finishing mill, section and groove steel rolling mill
