The production of finished rolled products begins with a previously cast billet. It is smelted from iron ore to produce carbon steel of a specified grade. The brand, in turn, determines the properties of the material - strength, resistance to temperatures and other extreme events. The steel billet is sent to the rolling mill, where, by hot, warm or cold rolling, we obtain a finished product with the required characteristics. After that, the product is cooled and sent for quality control and labeling.
All products after rolling by size and shape can be divided into special groups - assortment . According to the Internet site www.mtt.kz , there are main types of the assortment:
- high-quality metal rolling;
- sheet metal;
- pipes.
Further, high-quality metal products are simple and shaped. Shaped, in turn, is divided into special and general consumption and so on. In general, the assortment is a broad concept, it includes not only the type of rolled metal, but also the steel grade.
Manufacture and use of long products
The technological process looks like this:
- Heating the workpiece
- Billet feeding into working stands, and rolling in calibers to obtain the required diameter
- Cutting the product with saws or scissors, getting the required length
- Sending to refrigerators
- Edit in the right machine
- Control and dispatch to warehouses
Simple bar products include products such as a square, a circle, and a flat strip. For general-purpose shaped metal-roll - a beam, corner, channel, special - railway and tram rails, profiles for various industries. The use of long products depends on the steel grade, mainly products are used in the construction of structures, buildings, structures, mechanical engineering.
Production and use of sheet metal
- Slab heating in furnaces
- Feed to work stands, rolling between rolls to the required thickness
- Editing, cooling and control
- Edges and ends trimming
- Cutting
- Heat treatment
- Send to warehouse
Sheet products - roll, sheet, strip, strip. It is divided into hot-rolled (thin - up to 4mm, thick - over 4) and cold-rolled. It is used in the automotive industry, in mechanical engineering to obtain parts of mechanisms, in shipbuilding. The sheet is also used in roofing and finishing works, as well as for strengthening and armoring structures. Some types of sheet metal are post-processed, stamped or rolled.
