Marking roll steel
Buy in a wide range of brands and profiles of roll steels at affordable prices from the manufacturer offers the company Elektrovek-steel. The supplier guarantees the prompt delivery of products to the address specified by the customer.
The most common brands of roll steels
The brands and applications are indicated in the table below:
|steel grade||Varieties of rolling equipment|
|50, 55, 55Х, 50ХН and 60ХН||Blumings, slybings and billets|
|50, 55, 55Х, 40ХН, 50ХН,||Rail-cutting and large-scale mills|
|60ХН, 9Х н 9ХФ|
|50, 55, 5HX and 50XH||Medium-grade mills|
|50, 55, 55X and 60XG||Small-section mills|
|50, 9X, 9XF and 9X2MF||Wire mills|
|50, 60ХГ||Strippers mills|
|150HG1M||Non-continuously-billet, medium-grade, small-section, strips and wire mills|
In the marking, the first number or digit indicates the percentage of carbon (in fractions of a percent, that is, 55 corresponds to 0.55% of the carbon in the chemical composition of the steel), and the next letter indicates the presence of an alloying element: X chromium. N-nickel, F-vanadium, M-manganese, D-silicon, M-molybdenum.
Buy rolls of domestic production at economically favorable prices from the manufacturer offers the company Elektrovek-steel. The supplier guarantees delivery of the products to any point specified by the customer.
Characteristics of the current industry standard
The marking of roll steels is established by technical standards and requirements of OST 24−13−90. According to this standard, the rolls must be made of quality, high-quality and particularly high-grade steels of the grades specified above
The steel grade is set by the manufacturer in agreement with the consumer, based on the specific operating conditions of the roll.
Designation of quality categories, according to GOST 4543−83: qualitative — without designation, high-quality — A, especially high-quality — Ш (steel is made by electroslag remelting method).
Steel, evacuated by out-of-furnace method, refers to high-quality steel.
The chemical composition of the most common steels intended for the manufacture of rolls must correspond to that indicated in the table
|55ХНМ||0.5… 0.6||0.17… 0.37||0.50 to 0.80||1.20… 1.60||1.30… 1.70||-||0.10… 0.30|
|60Х2СМФ||0.57… 0.65||1.05… 1.30||0.20… 0.70||Not more than 0.50||1.80… 2.10||0.10 to 0.25||0.25… 0.35|
|60ХН||0.55… 0.65||0.17… 0.37||0.50 to 0.80||1.0… 1.5||0.60… 0.90||-||-|
|75ХМФ||0.7… 0.8||0.2… 0.6||0.2… 0.7||Not more than 0.3||1.4… 1.7||0.05 to 0.25||0,1… 0,3|
|90HF||0.8… 0.9||0,15… 0,35||0.3… 0.6||Not more than 0.35||0,4… 0,7||0,15… 0,30|
In high-quality and high-quality steels, the phosphorus content should not exceed 0.025%. The sulfur content in high-quality steels should not exceed 0,023%, and in especially high-quality — 0,015%.
The macrostructure and fracture of the roll samples should not contain metallurgical defects — cracks, flokens, planting friable and slag inclusions, visible without the use of magnifying devices.
Company Electrovek-steel offers to buy at prices from the manufacturer of rolled products and forgings of rolled steel. The supplier guarantees the timely delivery of products to the address specified by the consumer.