Hot rolled rebar production line is the key facility for the production of rebar. The following is its detailed introduction:
1. Composition of the production line
Hot rolled rebar production line is mainly composed of heating furnace, roughing mill, medium mill, finishing mill, water cooling device, cooling bed, cold shear, automatic packaging machine and unloading table and other equipment. These devices work in coordination to complete the entire process from the heating of steel billets to the production of finished rebar products.
2. Main equipment features
(1) Heating furnace:
Induction heating furnace has been widely used in hot rolled rebar production line because of its advantages of high heat efficiency, uniform heating, low material burning loss rate, and accurate control of heating temperature.
The equipment adopts a prestressed structure, which features high strength, long service life and convenient maintenance.
The sensor is rationally designed and highly efficient. It pioneers a pulsating heating method, effectively eliminating the temperature difference between the surfaces of large-diameter workpieces during heating.
(2) Rolling mill:
The roughing mill, medium mill and finishing mill gradually roll the heated billets into the required diameter of rebar through different combinations of rolls and rolling forces.
The rolling mill adopts advanced rolling technology and equipment to ensure the stability and efficiency of the rolling process.
(3) Water cooling device:
It is used for fast cooling of rolled rebar to improve its hardness and strength.
The design of the water cooling device should consider the cooling effect and cooling speed to ensure the quality of the rebar.
4. Cooling bed, cold shear, automatic packaging machine:
The cooling bed is used for storing and finishing the cooled rebar.
Cold shear is used to cut the cooled rebar to the desired length.
Automatic packaging machine is used to cut the rebar after package, convenient transportation and storage.
3. Production process flow
(1) Steel billet preparation: Select qualified continuous casting small billets as raw materials, with side lengths generally ranging from 130-160mm, lengths generally between 6-12m, and a single weight of 1.5-3 tons.
(2) Heating: Send the qualified steel billets into the heating furnace for heating, and the heating temperature should be controlled within a certain range to ensure the smooth progress of the rolling process.
(3) Rolling: The heated steel billet is continuously rolled through the roughing mill, the medium mill and the finishing mill, gradually transforming into the required diameter of rebar.
(4) Cooling: The rolled threaded steel is sent to a water cooling device for rapid cooling to improve its hardness and strength.
(5) Shearing and packaging: The cooled threaded steel is cut into the required length by cold cutting, and then packaged by an automatic packaging machine.
4. Advantages of production line
(1) High degree of automation: It can achieve fully automated unmanned operation and improve labor productivity.
(2) Uniform heating: Ensure that the temperature difference between the heating core and the surface is small, and the temperature can be precisely controlled through a temperature control system.
(3) Efficient and energy-saving: Compared with other heating methods, it effectively reduces energy consumption.
(4) Environmentally friendly and pollution-free: The equipment meets environmental requirements and is conducive to sustainable development.
In summary, the hot rolled rebar production line has the advantages of high efficiency, energy saving and environmental protection, and is an important facility for producing high-quality rebar.
