Hot rolling of metal
Are you interested in the characteristics of the hot rolling of metals, steels and alloys from the supplier company AvecGlob? Here you will find interesting information on this topic.
The essence of the rolling process of metal
Rolling is a group of technological processes for the second redistribution of metal, and is used in the metallurgical industry. This — the process of plastic deformation of the initial blanks (ingots, castings), in which the parent metal passes through a pair of rotating rolls, performing its reduction in the vertical direction. According to the law of constancy of volume after rolling, the transverse dimensions of the metal increase.
Hot rolling has two main varieties — flat and bulky. In flat rolling, the final product is a roll, and for profile (bulk) rolling, wire, rod, or workpiece with a more complex cross-section. Since the recrystallization temperature of metals is different, the rolling temperature can not be considered a determining factor: for example, lead rolling at room temperature will be considered hot (recrystallization and grain size changes in the metal occur), and tungsten rolling at a temperature up to 1800 0 C — cold (recrystallization and dimensional change grains in metal do not occur).
When hot rolling, the yield point and the hardness of the metal do not practically increase, and the ductility of the heated metal increases. This makes hot rolling a less time-consuming and expensive process than cold rolling. Urgency of application
Urgency of application
Hot rolling is used to produce hot rolled steel, which is used in the production of vehicles and equipment (for example, rails), in road construction and mining machinery. The method of hot rolling produces steels and alloys that are used in construction.
Supplier — AvekGlob Company — offers at reasonable prices from the manufacturer various metals and alloys successfully cold rolled, in the quantity and assortment required by the customer. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Equipment
For the implementation of hot rolling, rolling mills are used. This equipment is divided into longitudinal and transverse rolling mills, on sheet and profile. Classification and operational differences between the sizes of rolling mills of hot rolling usually produce by the following factors:
On the limiting sizes of a cross-section of a rolled workpiece;
On the width of the rolled material;
By the number of stages (passes) of rolling, which, depending on the plasticity of the metal and the temperature of its heating, can reach 3… 4;
By drive power;
On the degree of automation control rolling mill.
Advantages and limitations
Hot rolling provides:
Significant reduction in effort in metal processing;
Increased productivity due to reduced number of passes;
Reducing the energy intensity of equipment.
At the same time, most of the technologies of hot rolling are distinguished by the lowered accuracy of the final profile and the need for its cleaning from scale.
Supplier — AvekGlob Company — offers to purchase various metals and alloys obtained by hot rolling methods, in any quantity and range of sizes. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.