Roller steel from the Astm system

Are you interested in roll steel in the Astm system? Supplier Avlob offers to buy roll steel at a bargain price. The supplier guarantees the timely delivery of products to any address in Europe or abroad. Regular customers receive a discount discount. The price is the best in this segment.

A649 / A649M-2015

The production of roller steels in the United States and North America is conducted in accordance with the technical standards and rules of the standard A649 / A649M-2015. This standard treats steel and alloys intended for the manufacture of rolls of rolling mills, as well as trunnions of such rolls. The standard defines the general requirements for such steels, regardless of the number of rolling mill stands.

Production

Roller steels can be obtained by the methods of electroslag remelting, and the initial kind of assortment for subsequent processing are forgings. The chemical composition of roll steels determines the percentage of manganese and carbon, and the permissible operating temperatures are determined. The permissible values of the surface roughness of blanks are specified, as well as surface hardening technologies.

Deformation

The maximum deformation of rolled materials in one pass should not exceed 30%, while the minimum thickness of the walls of the hollow rolls can not be less than 4 mm. The permissible operating temperature of the hot rolling mill roll is set at 315 ° C, at working pressures on rolls within 140… 200 MPa. For rolls used in cold rolling mills, the boundary of operational temperatures is taken at 400 ° C, at working pressures on rolls of 170… 250 MPa.

Quality requirements

Rolled steel, obtained by electroslag remelting, have limitations on the percentage content of silicon (not higher than 0.12%); During deoxidation, the amount of free nitrogen and oxygen in the formulation should not exceed 0.2%; The presence of voids, pores and shells is unacceptable on the working surface of the roll; The minimum strength of the material before heat treatment should not be less than 860 MPa. Supplier Avlob offers to buy rolled steel alloys at a bargain price. The price is the best in this segment of rental.

Additional standards

Code 77.140.10 for ICS (tool steels, subsequently subjected to heat treatment)

Code 23151900 UNSPSC (Rolled metal production and equipment intended for this purpose).

Delivery, price

Are you interested in roll steel in the Astm system? Buy roll steel at an affordable price from the supplier Avlob today. The price is formed on the basis of European production standards. Supplier Avlob offers to buy roll steel alloys at the optimal price in bulk or at retail.