RU2003114021A

RU2003114021A - COLD STEEL FOR DEEP DRAWING

Info

Publication number: RU2003114021A
Application number: RU2003114021/02A
Authority: RU
Inventors: Виктор Филиппович Рашников; Андрей Андреевич Морозов; Рафкат Спартакович Тахаутдинов; Юрий Алексеевич Бодяев; Александр Федорович Сарычев; Алексей Дмитриевич Носов; Виктор Михайлович Корнеев; Олег Анатольевич Николаев; Ирина Гавриловна Родионова; Евгений Савватьевич Фомин; Бронислав Филиппович Зинько; Дмитрий Александрович Бурко; Александр Давидович Горин; Дмитрий Григорьевич Рузаев; Игорь Петрович Чистяков; Евгений Васильевич Афанасьев
Original assignee: Открытое акционерное общество "Магнитогорский металлургический комбинат"
Filing date: 2003-05-12
Publication date: 2004-12-27

Claims

1. Cold drawn steel for deep drawing, containing carbon, silicon, manganese, sulfur, phosphorus, aluminum, nitrogen, titanium, niobium, oxygen and iron, characterized in that it contains components in the ratio, wt.%:

carbon - 0.001-0.006,

silicon - 0.002-0.020,

Manganese - 0.07-0.30,

phosphorus - 0.005-0.020,

sulfur - 0.005-0.010,

aluminum - 0.015-0.050,

nitrogen - 0.002-0.006,

titanium - 0.02-0.08,

niobium - 0.005-0.060

oxygen - 0.001-0.005,

iron and unavoidable impurities - the rest,

the total content of aluminum and titanium is 0.07-0.12%, the ratio of aluminum to oxygen is at least 5.0, and the minimum titanium content is calculated from the ratio:

(Ti) _min = 3.43 (N) +2.4 (S),

where (Ti), (N) and (S) is the content of titanium, nitrogen and sulfur, respectively,% wt.

2. Cold rolled steel according to claim 1, characterized in that it contains niobium in an amount of 0.005% ≤ (Nb) ≤7.75 (C),

where (C) and (Nb) are the carbon and niobium content, respectively,% wt,

3. Cold rolled steel for deep drawing according to claim 1, characterized in that it contains niobium in an amount determined from the ratio:

7.75 (C) <(Nb) ≤0.06%,

where (C) and (Nb) is the carbon and niobium content, respectively,% wt.