Hot rolled steel is a multipurpose material applied in different sectors such as construction, automotive, pipelines, etc. A hot rolling mill plant is organized for converting billets into usable steel products. The system includes the sequence of machines in a rolling mill, which work together to turn the heated billet into the needed steel product. The hot rolling mill can be equipped to produce rods and bars, strips, and sections. The types of machines that are put into use can vary depending on the type of the final product that needs to be produced.
Components Depend on the Output Needed
The hot rolling mill plant is designed in different layouts depending on what you want to manufacture.
Slit Rolling Mill: designed for the conversion of raw material into strips or strands.
Strip Rolling Mill: A mill meant for producing flat strips and uses rolling techniques suitable for ensuring dimensional accuracy.
Section Rolling Mill: Uses roll shapes to produce products like angles and channels, as well as other structural products.
Key Components of a Hot Rolling Mill Plant
Reheating Furnace
Before using the rolling mills, billets must first be heated to the required temperature at which they can be effectively processed. The reheating furnace does this job and delivers hot billets to the rolling process.
Rolling Mill Stands
This is where the actual operation of shaping steel takes place. The steel passes through a number of rolling mill stands, which achieve the required shape or get closer to it.
Rolls and Roll Passes
The rolls are the parts of the rolling mill that touch the hot steel and, using force exerted on it, change its shape. In products with a defined shape, grooves in the rolls allow the shaper to achieve the desired profile step by step.
Guides and Pinch Rolls
Guides ensure that steel reaches its position, while pinch rolls help in keeping it still. It is necessary to pass the steel from one rolling mill to the other to undergo the treatment while in the right position at the moment of entering the rolling mill.
Shearing Equipment
Shears help to cut the steel at the required places. The shears can cut off unnecessary pieces, divide the material into several parts, or produce products of a required length.
Finishing and Material Handling Equipment
Cooling Bed
Hot-rolled steel bars and sections must have enough space for cooling before they are removed. The cooling bed is meant for receiving material for cooling.
Straightening Machine
Straightening of rolled products is sometimes necessary after the cooling of rolled products. Straightening machines use specific mechanisms for correcting the shape of rolled sections.
Cutting and Bundling System
After the cooling procedure and some straightening, the rolled products can be cut to the required length.
Conclusion
A well-established hot rolling mill plant setup depends on the type of steel products you want to produce and what output you are expecting from this new line. One has to choose the right rolling stands, guides, shears, cooling bed, furnace, and finishing equipment so that not only they suit the capabilities and conditions of the upstream process but can also meet the requirements of the next operation stage.
Nav Bharat Engineering Works offers various hot rolling mill solutions for slit, strip and section mills. Contact the team and discuss your requirements to choose the right setup and equipment for you.
FAQs
A hot rolling mill is steel processing plant that rolls heated metal billets and other steel inputs into the correct shapes and sizes.
We at Nav Bharat Engineering Works provide Slit Rolling Mills, Strip Rolling Mills, and Section Rolling Mills.
The capacity of our strip rolling mill ranges from 300,000–400,000 TPA.
We have integrated PLC automation features in our hot rolling mills.
Rolling mill stands hold the rolls that reduce the cross-section or progressively shape heated steel into the required finished profile.
