In general, There are differences in the production process of B and C metal sheets, and the products available in the market include hot plate type one (b), hot plate type two (c), cold plate, galvanized plate, and tin plate. Hob B is available in widths 1250 and 1200 mm and thickness 4, and hot plate C is available in widths 1300, 1350, 1400, and 1450 and thicknesses 5 and 6. After a customer has purchased from commodity exchange, if the buyer's order is for a different thickness than the standard thickness of the purchased sheet, he must pay the seller a difference, called a "premium". As mentioned earlier, hot plate refers to the plate produced by hot rolling, and cold plate refers to the plate produced by the cold rolling process. In steel production complexes, hot and cold rolling processes are usually used. In this way, steel ingots and scraps pass through different racks in the hot rolling line and become structural sections such as plates, steel bars, wires, and tubes. Overview of the production process of different types of plates: 
- Production of sponge iron
- slab Continuous Casting Production
- Convert slab to Hot Coil by hot rolling process
- Production of thin green coils by cold rolling
- Finishing of steel and production of end products in coils and cold plates
- Coating operation and production of the painted plate (galvanized plate, colored plate, tinned plate)
Based on the above steps, the final product and the main product of a factory consist of 10 families, which are:
- heating coil
- hot plate
- Pickling spiral
- raw roll
- cold roll
- cold plate
- pan handle
- Tin plate
- Galvanized plate
- coloring page
The steel production process begins with the processing of iron ore. Iron ore is a combination of iron oxide and metallic impurities such as sulphur, phosphorus and silica. First, the iron ore is crushed in a special process and the metallic impurities are separated. 
Then, in a pelletizing process, the iron ore (combined with iron oxide) is formed into pellets, and after baking, a product called a pellet is produced. The production pellets produce pure iron in a direct reduction process that reacts with carbon. DRI: As the particles lose oxygen in the process, the resulting composition has a porous, spongy state. That is why iron is called mushroom iron. The sponge iron is piled up and stored in special tanks, which are gradually used as raw material for the next stage of steel production. Production of molten steel: The next step in steel production is to convert iron into molten steel. Input to this process is sponge iron. Type and quality groups of steel and their chemical properties are created at this stage. Here, sponge iron and iron scrap are transformed into molten steel in specific proportions in an electric arc furnace. After slag removal from the melt, additives are added to the molten steel in the necessary proportions according to their intended mass group, and by blowing gas into the melt, these materials are combined with the melt. After this step, the molten steel is emptied into large crucibles and sent to the crucible furnace for further processing. In the crucible furnace, additives are added to the molten steel according to the customer's requirements. 
Finally, based on laboratory samples taken from the steel, a melt purification is performed and the molten steel is ready for casting. The temperature of molten steel after production is about 1650 degrees Celsius. The minimum permissible temperature for casting is 1580 degrees. Therefore, the melt must be sent to casting immediately after completed operations. At this stage, the melt produced during the steelmaking process is made into ingots or ingots in a continuous casting apparatus. Ingot: Place the molten ladle on the casting tower. The casting tower can accommodate two crucibles, one in the casting operating position and the other in standby. The melt enters the intermediate container through special channels installed at the bottom of the pot. Tundish acts as an intermediate reservoir and always maintains a certain amount of melt reserve so that the continuity and uniformity of the melt flow in the mold are not interrupted when the melt pool is changed. After the melt is ejected into the mold by the flow of water around the mold, it cools and takes the shape as the mold. The resulting gelatinous material moves in a curved path gradually cools and is cast from the machine into strips of rectangular cross-section. At the end of the casting line, the strip is cut to specific lengths and finally, the plate is produced. 
At our Steel Complex, tap necks are produced with a fixed length of 10,000 mm. Depending on the customer's order, the width of the bed varies between 580 and 1880 mm. The temperature in the slab, at this stage is around 800 degrees Celsius. The manufactured beds are cooled with air or water, depending on type and quality. After the removal of possible surface defects, the slab is arranged in an area called the slab depot. The stored sheets gradually enter the hot rolling process. In a hot rolling mill, sheets are first heated through a preheating furnace until they become red and ductile. Hot steel plate: Then the fried takthal is thinned through rolls in the scrubbing and finishing stages and finally becomes hot rolls after cooling. The product from the hot rolling mill can be sold as a final product or as a semi-finished product to continue to the next process (completion of rolling and cold rolling). In the rolling finishing unit, according to the customer's order, if necessary, the coil is subjected to the rolling process. In light and heavy cutting lines, coils are also cut and delivered as end products as steel plates. Hot-rolled products are mainly used for the production of heavy steel structures such as fluid transport pipes. Cold steel plate: In the cold rolling zone, the hot coil is first subjected to a pickling process to clean the surface of the coil. This product is called a pickling coil and can be sold as an end product or sent to the next unit to continue the cycle. In the next step, the coil goes through a cold rolling process. 
During this process, the pickled coil passes through several rollers in a cold state, which reduces the thickness of the steel plate due to the pressure of the rollers and the tension of the steel plate. The product of this process is a raw roll. The product can also be delivered to the customer as a finished product or used as an input for subsequent processes (cold products, strips and coated products). To produce cold products, the green coils produced during the rolling process are subjected to cycles of annealing, shell rolling and plate modification. If desired, the coils produced through the above steps can also be subjected to light or heavy cutting cycles as per customer requirements. Cold products are mainly used for the production of car bodies, household appliances, etc. To produce thin strips, the green coil product enters a longitudinal cutting process after annealing and peeling cycles. During this process, the coil is cut lengthwise by several blades into a strip of small width. Galvanized, colored and tinned steel sheets: Laminated sheets include galvanized sheets, tin sheets, and colored sheets. Coated products are first-class rust protection products for special applications. During the tinning process, the surface of the coil is covered with a thin layer of tin. Coated tin plates are used in the food industry and in the production of tin cans for storing solutions and chemicals. During the galvanizing process, the surface of the steel plate is coated with a thin layer of zinc. This product is mainly used for the manufacture of tanks. Galvanized sheet covered with special colors. Coloring pages are mostly used in appliance manufacturing and shed construction. 
B and C sheet metal process
As mentioned earlier, B and C metal sheets are manufactured in different processes. hot rolling mill As mentioned before, the tact tail is cooled after casting and cutting with water or air and stored in a tact hall store. They are then transferred to the hot rolling unit. In the following, this device will be fully described. Hot rolling consists of six parts.
- A) Preheating Furnaces: The hot rolling production line has 4 preheating furnaces and input materials enter these furnaces at normal temperature. After approx. 200 minutes, the temperature of the bed reached 1200 degrees Celsius. The bed is heated to a uniform temperature. The uniform temperature ensures that the sheet is not deformed unevenly during the hot rolling process. Additionally, this action greatly reduces the force and torque required to roll.
- b) Vertical shell breaker: After leaving the above furnace, the tak tails lose their excess shell under water pressure through the vertical shell breaker.
- c) Rough hot rolling: This part has two reciprocating stands. In each rolling stage, the plate thickness is reduced by approx. 25%, the output plate is approx. 50 meters long, approx. 40 mm thick and has a temperature of 1100 degrees Celsius.
- d) Final hot rolling: In this step, the sheet obtained from the rough rolling section goes to the final rolling of 7 stands so that it loses a certain thickness in each rolling step to reach the desired thickness. The end result of the seven-layer rolling is a plate with a thickness of 1.2 to 16 mm and a temperature of 800 to 900 degrees Celsius.
- e) Cooling: After the sheet leaves the previous part, it enters the sheet cooling, adds the mechanical properties required by the customer in the process, and comes out at a temperature of 500 to 600 degrees Celsius.
- f) Spiral coil: Then insert the tact tail into the spiral coil part. The hot rolling has three spiral-shaped coils whose task is to transform the plate into coils with a diameter of around 1750 mm.
A certain percentage of the hot-rolled product is also transferred to the hot-rolled finishing unit to perform operations such as reducing coil weight by improving mechanical properties, plate correction, and light and heavy cutting plate lengths around 1 to 12 meters. As previously mentioned, the pallets in roller racks pass over a pair of rollers. After rolling each sheet, for the next sheet during preparation, adjust the distance between the rollers to produce the desired thickness at the end of the line. Finally, the sheets produced from each bed are wrapped and formed into rolls. Coils can be shipped to customers or downstream units. It is worth noting that this whole process is done for each slab starting from roll to winding in less than 2 minutes. Inspection of bending machine parts: The main components of a rolling machine are work rolls, support rolls, bearings, a housing that houses these components, and a drive that drives the rolls. The rollers are solid cylindrical shafts with a reduced diameter on both sides, this area is called the roller neck. Bearings are mounted on these necks so that they can apply the necessary gravity to change the shape of the metal. The tenants are located in two types of houses. The lower box is fixed and the upper box is sliding, with the possibility of applying vertical force and adjusting the distance between the rollers through gears. Therefore, to prevent the work roll from floating and running off, a larger diameter roll is used as a support. Roller racks are usually divided according to the number and location of the rollers. The difference between a hot plate and a cold plate is what dear buyers should know before buying and using steel in a project, how it is used, and what advantages and disadvantages it has. If you are interested in purchasing the products from a reliable source don’t hesitate to contact us at any time. Our team of experts is available to answer your calls and questions.