EA201300886A1 - LOW-ALLOYED HOSE-CONTAINING STEEL FOR CEMENTED PARTS - Google Patents
LOW-ALLOYED HOSE-CONTAINING STEEL FOR CEMENTED PARTSInfo
- Publication number
- EA201300886A1 EA201300886A1 EA201300886A EA201300886A EA201300886A1 EA 201300886 A1 EA201300886 A1 EA 201300886A1 EA 201300886 A EA201300886 A EA 201300886A EA 201300886 A EA201300886 A EA 201300886A EA 201300886 A1 EA201300886 A1 EA 201300886A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- hrc
- molybdenum
- distance
- boron
- manganese
- Prior art date
Links
Landscapes
- Heat Treatment Of Articles (AREA)
- Gears, Cams (AREA)
Abstract
Изобретение относится к металлургии, а именно к конструкционным сталям с повышенными механическими свойствами и регламентированной прокаливаемостью и может быть использовано при изготовлении зубчатых колес энергонасыщенных машин. Предложена низколегированная борсодержащая сталь для цементуемых деталей, содержащая углерод, кремний, марганец, хром, никель, молибден, алюминий, кальций, бор, железо и примеси, отличающаяся тем, что дополнительно содержит ниобий при следующем соотношении компонентов, мас.%: углерод 0,18-0,23, марганец 0,40-0,70, кремний 0,17-0,37, хром 0,40-0,70, никель 0,40-0,70, молибден 0,15-0,25, алюминий 0,02-0,05, кальций 0,0004-0,0050, бор 0,008-0,015, ниобий 0,03-0,045, железо и неизбежные примеси - остальное, при этом суммарное содержание марганца, хрома, никеля и молибдена находится в пределах 1,35-2,35 мас.%, а отношение молибдена к бору находится в пределах от 10:1 до 30:1. В качестве примесей сталь содержит фосфор ≤0,025 мас.%, серу ≤0,025% и медь ≤0,15%. Прокаливаемость (твердость образца при торцевой закалке) соответствует: на расстоянии от торца образца 3 мм - от 44 до 47 HRC; на расстоянии 11,0 мм - от 33 до 47 HRC; на расстоянии 20,0 мм - от 20 до 44 HRC; на расстоянии 40,0 мм - от 13 до 33 HRC. Заявляемая сталь обладает регламентированной прокаливаемостью, более высокими значениями предела текучести, ударной вязкости и предела выносливости.The invention relates to metallurgy, in particular to structural steels with enhanced mechanical properties and regulated hardenability and can be used in the manufacture of gear wheels of high-powered machines. Proposed low-alloy boron steel for cemented parts containing carbon, silicon, manganese, chromium, nickel, molybdenum, aluminum, calcium, boron, iron and impurities, characterized in that it also contains niobium in the following ratio, wt.%: Carbon 0, 18-0.23, manganese 0.40-0.70, silicon 0.17-0.37, chromium 0.40-0.70, nickel 0.40-0.70, molybdenum 0.15-0.25 , aluminum 0.02-0.05, calcium 0.0004-0.0050, boron 0.008-0.015, niobium 0.03-0.045, iron and inevitable impurities - the rest, while the total content of manganese, chromium, nickel and molybdenum is within 1.35 -2.35 wt.%, And the ratio of molybdenum to boron is in the range from 10: 1 to 30: 1. As impurities, the steel contains phosphorus ≤0.025 wt.%, Sulfur ≤0255% and copper ≤0.15%. The hardenability (hardness of the specimen during end hardening) corresponds to: at a distance of 3 mm from the end of the specimen - from 44 to 47 HRC; at a distance of 11.0 mm - from 33 to 47 HRC; at a distance of 20.0 mm - from 20 to 44 HRC; at a distance of 40.0 mm - from 13 to 33 HRC. The inventive steel has a regulated hardenability, higher values of yield strength, impact strength and fatigue limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201300886A EA025921B1 (en) | 2013-06-24 | 2013-06-24 | Low-alloyed, boron-containing steel for face-hardened parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EA201300886A EA025921B1 (en) | 2013-06-24 | 2013-06-24 | Low-alloyed, boron-containing steel for face-hardened parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201300886A1 true EA201300886A1 (en) | 2014-12-30 |
| EA025921B1 EA025921B1 (en) | 2017-02-28 |
Family
ID=52248261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201300886A EA025921B1 (en) | 2013-06-24 | 2013-06-24 | Low-alloyed, boron-containing steel for face-hardened parts |
Country Status (1)
| Country | Link |
|---|---|
| EA (1) | EA025921B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024533A (en) * | 2019-12-06 | 2020-04-17 | 阳江十八子刀剪制品有限公司 | Method for detecting steel materials cut by cutter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1567653A1 (en) * | 1988-08-05 | 1990-05-30 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Carburizing structural steel |
| JP2003049241A (en) * | 2001-06-01 | 2003-02-21 | Daido Steel Co Ltd | Free-cutting steel |
| JP3918787B2 (en) * | 2003-08-01 | 2007-05-23 | 住友金属工業株式会社 | Low carbon free cutting steel |
| RU2363753C1 (en) * | 2008-02-15 | 2009-08-10 | Открытое акционерное общество "Оскольский электрометаллургический комбинат" (ОАО "ОЭМК") | Low-alloy boron steel of high treatability |
-
2013
- 2013-06-24 EA EA201300886A patent/EA025921B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111024533A (en) * | 2019-12-06 | 2020-04-17 | 阳江十八子刀剪制品有限公司 | Method for detecting steel materials cut by cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| EA025921B1 (en) | 2017-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG TJ TM RU |