SU1208090A1 - Medium-carbon low-alloyed steel for high-strength pipes of petroleum grades - Google Patents
Medium-carbon low-alloyed steel for high-strength pipes of petroleum grades Download PDFInfo
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- SU1208090A1 SU1208090A1 SU823518656A SU3518656A SU1208090A1 SU 1208090 A1 SU1208090 A1 SU 1208090A1 SU 823518656 A SU823518656 A SU 823518656A SU 3518656 A SU3518656 A SU 3518656A SU 1208090 A1 SU1208090 A1 SU 1208090A1
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- medium
- alloyed steel
- carbon low
- steel
- carbon
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Description
Изобретение относитс к металлургии , в частности к производству труб нефт ного сортамента - обсадных и на сосно-компрессорных бесшовных труб повышенной прочности Л (М) по ГОСТ 632-80.The invention relates to metallurgy, in particular, to the production of petroleum pipes of a range of goods - casing and to pine-compressor seamless pipes of increased strength L (M) according to GOST 632-80.
Целью изобретени вл етс улучшение технологичности и повьппенйе механических свойств.после нормализации и высокого отпуска.The aim of the invention is to improve the processability and improve mechanical properties. After normalization and high tempering.
Сталь выплавл етс в мартеновских печах, причем необходимое количество ферромолибдена ввод т в ванну печи после расплавлени , ферромарганец, ферросилиций и феррованадий ввод т в ковш Одновременно. После присажива- ни перечисленных ферросплавов в ковш ввод т кальций в виде кремне- марганцевокальциевогр комплексного сплава (1-2 кг/т стали) совместно с расчетным количеством алюмини .Steel is smelted in open-hearth furnaces, and the required amount of ferromolybdenum is introduced into the furnace bath after melting, ferromanganese, ferrosilicon and ferrovanadium are introduced into the ladle at the same time. After landing these ferroalloys, calcium is introduced into the ladle in the form of a silicon-manganese-calcium complex alloy (1-2 kg / t of steel) together with the calculated amount of aluminum.
Оптимальные свойства стали в издели х про вл ютс после нормализации при 830-900°С и высокого отпуска при 600-650 С. Химический состав вариантов изобретени и свойства в сравнении со сталью 32Г2СФБ и вариантами,, выход щими за предлаИзвестна The optimum properties of the steel in the products appear after normalization at 830-900 ° C and high tempering at 600-650 ° C. The chemical composition of the variants of the invention and the properties in comparison with the steel 32G2SFB and variants beyond the known
0,25 0,5 1,3 NB 0,06 0,060.25 0.5 1.3 NB 0.06 0.06
гаемые границы (примеры 4 и 5), представлены соответственно в табл. 1 и 2. Усилие резани Р при точении определ лось при глубине резани ,5 мм, подаче ,097 мм/об, числе оборотов об/мин и геометрии резцаThe boundaries (examples 4 and 5) are presented respectively in Table. 1 and 2. The cutting force P when turning was determined at a depth of cut, 5 mm, feed, 097 mm / rev, revolutions per minute and cutter geometry
(ВК8) с , (BK8) with,
Как видно, предлагаема сталь /обладает высокими значени ми предела прочности, предела текучести и ударной в зкости при сохранении высоких значений относительного удлинени . Кроме того, сталь по изобретению обладает хорошей обрабатываемо- стью резанием.As can be seen, the proposed steel / has high values of tensile strength, yield strength and toughness while maintaining high values of relative elongation. In addition, the steel of the invention has good machinability.
Применение этой стали позвол ет исключить из технологического процесса следующие операции: замедлен- ное охлаждение блюмсов и трубных заготовок; закалку; процесс правки труб.The use of this steel makes it possible to exclude from the technological process the following operations: slow cooling of blooms and billets; quenching; tube straightening process.
Предлагаема сталь после термического улучшени может использоватьс как конструкционный материал, работающий при отрицательных температурах (температура закалки 880°С, температура отпуска 650°С, см. табл. 3).After thermal improvement, the proposed steel can be used as a structural material operating at negative temperatures (quenching temperature 880 ° C, tempering temperature 650 ° C, see Table 3).
Т а б л и Ц . а 1T and b and C. a 1
0,005 Остальное0,005 Else
0,0075 ,010,0075, 01
0,004 ,015 - -312080900.004, 015 - -31208090
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU823518656A SU1208090A1 (en) | 1982-07-05 | 1982-07-05 | Medium-carbon low-alloyed steel for high-strength pipes of petroleum grades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU823518656A SU1208090A1 (en) | 1982-07-05 | 1982-07-05 | Medium-carbon low-alloyed steel for high-strength pipes of petroleum grades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1208090A1 true SU1208090A1 (en) | 1986-01-30 |
Family
ID=21038141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU823518656A SU1208090A1 (en) | 1982-07-05 | 1982-07-05 | Medium-carbon low-alloyed steel for high-strength pipes of petroleum grades |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1208090A1 (en) |
-
1982
- 1982-07-05 SU SU823518656A patent/SU1208090A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Патент CIIIA № 4226645, кл. 148/2 (С 21 D 9/08), 1980. Авторское свидетельство СССР № 331111, кл. С 22 С 38/08, 1970. * |
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