Thin-sheet hire from steel holodnokatany, Thin-sheet hire from steel holodnokatany Pervomaisk

Liszt holodnokatany (a cold-smoked leaf) - one of main types of steel products received from carbonaceous brands became by cold rolling. Let out this type of hire in sheets from 0,35 to 5,00 mm thick and rolls from 0,35 to 3,5 mm thick. Apply a holodnokatanny leaf generally to cold stamping and production of products with a qualitative surface.

The Holodnokatany leaf is produced in accordance with GOST 16523-89. The range has to be in accordance with GOST 19904-74. The chemical composition of steel has to correspond to GOST 1050-88.

Became which are used for production of a holodnokatany leaf: St08 (kp, ps), St10 (kp, ps), St15 (kp, ps), St20 (kp, ps), St25, St30, St35, St40, St45.

According to characteristics there are 5 groups of sheet hire, behind quality of finishing - 4 groups:

The I group - a leaf of especially high finishing;

The II group - a leaf of high finishing;

The III group - a leaf of the increased finishing;

The IV group - a leaf of usual finishing.

On classification classes for hot-rolled and holodnokatany sheets are determined by state standard specifications 19903-90 and 19904-90. According to these standards a leaf where width of 500 mm and more, are made in sheets from 0,5 - 160 mm in rolls from 1,2 - 12 mm.

In holodnokatany sheet hire distribute two categories of accuracy:

Class A - the increased accuracy;

Class B - normal accuracy.

Sheets are divided by character of an edge on:

BUT - sheets with not cut off edge;

About - sheets with the cut-off edge.

IN ACCORDANCE WITH GOST 19904-90 sheet holodnokatany steel as regards a range is defined. In sheets make steel from 500 mm wide and from 0,5 thick - 5,0mm. In rolls - steel from 0,5 thick - 3,0mm.

Behind the minimum value of temporary resistance (V), holodnokatany sheets are divided into the following groups of durability:

K260B and so on. (where To - qualitative; 260 - lower limit of temporary resistance).

Holodnokatany sheets determine by planeness:

ON - especially high planeness;

PV - high planeness;

PU - the improved planeness;

PN - normal planeness.

Still there are sheets with an organic covering (TU 14-1-4792-90), or corrosion-resistant (the German DIN 50049 3.1 B standard).

Sheets of metal rolling with an organic covering use in rooms and in the open air for production of building constructions, cases and thermal isolation of devices and the equipment.