Hexagon is one of the types of rolled metal. The scope of use of the hexagon is wide enough. A metal rod with a hexagonal section is used for the manufacture of machine parts, complex mechanisms, bolts, nuts, fasteners.
The standard hexagon is-length from 2 to 6.5 meters. But by individual order it is possible to increase the length of the bars up to 12 meters.
At this stage of development of the metallurgical industry, there are three types of production of steel hexagon:
-Hot rolling;
-Hot pressing;
-Cold rolling.
In the manufacture of hexagon hot rolling method, the dimensions of the product reach the limit-100 mm. according to GOST 2879-99, provides a large range in the size of the hexagon, and for profile products less than 20 mm, it is allowed to supply in coils. Due to the presence of surface scale in hot-rolled production, hexagon is subjected to chemical or mechanical cleaning.
The production of metal products of hexagonal section by hot pressing method includes the production of hexagon from special and heat-resistant tool steels. The profile is pressed on powerful hydraulic presses, most often of horizontal type. With increased profile accuracy, the pressing tool has a relatively low resistance.
Hexagon cold rolling is obtained more accurate size, so suitable for the needs of precision engineering. According to GOST 8560-88, cold rolling of the hexagonal profile is possible from a diameter inscribed in the hexagon of a circle equal to 3 mm.the profile Billets are pre-phosphated to reduce specific loads.