Cold rolling of metals

Are you interested in the characteristics of the cold 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.

Cold 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 cold rolling increases the yield strength and hardness of the metal. Similar processes occur due to the appearance of defects in the crystal structure of the metal. In this case, a strengthened microstructure is formed, which prevents further sliding. Since the metal is at room temperature, it is less malleable than the metal rolled above its recrystallization temperature. This makes cold rolling a more labor-intensive and expensive process than hot rolling. Cold rolling also reduces the grain size of the metal, which leads to hardening.

Urgency of application

Cold rolling is used to produce sheet steel that is used in the automotive, aerospace, home appliances, metal food packaging, electronics and electrical industries.

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

Cold rolling is used by rolling mills. This equipment is divided into longitudinal and transverse rolling mills, on sheet and profile. Classification and operational differences between the standard sizes of cold-rolling mills usually produce for the following factors:

On the limiting sizes of a cross-section of a rolled workpiece;

The width of the rolled sheet;

By the number of stages (passes) of rolling, which, depending on the plasticity of the metal, can reach 3… 4;

By drive power;

On the degree of automation control rolling mill.

Advantages and limitations

Cold rolling provides:

Significant reduction in metal losses during processing;

Increase in productivity due to reduction of additional operations after deformation (for example, surface cleaning);

Increased accuracy of the final product;

Improving the performance characteristics of rolled sections.

At the same time, most of the technologies of cold rolling are distinguished by the increased energy consumption and metal consumption of the equipment used.

Supplier — AvekGlob Company — offers to purchase various metals and alloys obtained by methods of cold rolling, in any quantity and in a nomenclature 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.