FIELD: metallurgy.
SUBSTANCE: invention relates to steel for chains of mining equipment. Steel has a composition, wt.%: C: 0.20-0.28, Si: 0.01-0.40, Mn: 0.50-1.50, P≤ 0.015, S≤ 0.00,2 Cr: 0,30-2,00, Ni: 0.50-2.00, Mo: 0.10-0.80, Cu: 0.01-0.30, Al: 0.01-0.05, Nb: 0.001-0.10, V: 0.001-0.10, N≤0.00018, B≤0.0150, ≤0.0020, the rest is Fe and unavoidable impurities. The coefficient of microalloying elements rM/N, determined by the expression rM/N =([Al]/2+[Nb]/7+[V]/4)/[N], is 1.0-9.9.
EFFECT: steel has high strength and the required toughness, elongation and relative deformation and can also resist stress corrosion cracking and have suitable weather resistance, wear resistance and fatigue resistance.
9 cl, 2 dwg, 4 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| NATURAL AND NON-TEMPERED ROUND STEEL WITH HIGH STRENGTH, HIGH IMPACT STRENGTH, EASE OF CUTTING AND METHOD OF ITS PRODUCTION | 2022 |
|
RU2822732C1 |
| STEEL WITH CONTROLLED RATIO OF YIELD STRENGTH TO TENSILE STRENGTH AND METHOD OF ITS MANUFACTURE | 2021 |
|
RU2806255C1 |
| SUPER-THICK STEEL SHEET FOR A VESSEL WITH GOOD IMPACT STRENGTH AT LOW TEMPERATURES IN THE MIDDLE AND ITS MANUFACTURING METHOD | 2020 |
|
RU2797390C1 |
| METHOD OF MAKING HOT-MOLDED STEEL PART AND HOT-MOLDED STEEL PART | 2017 |
|
RU2725936C2 |
| STEELS WITH HIGH TENSILE STRENGTH AND HIGH IMPACT VISCOSITY | 2019 |
|
RU2785314C2 |
| METHOD OF MAKING PART SUBJECTED TO RE-MOULDING FROM FLAT STEEL PRODUCT WITH MANGANESE CONTENT AND PART OF SUCH TYPE | 2017 |
|
RU2725939C1 |
| STEEL FOR A CLASS R6 HIGH-STRENGTH AND HIGH-FLEXIBILITY MARINE MOORING CHAIN INTENDED FOR ANCHORING A FLOATING BODY WITH CATHODIC PROTECTION, AND MOORING CHAIN MADE THEREOF | 2019 |
|
RU2763365C1 |
| SEAMLESS OIL-GRADE PIPE MADE OF HIGH-STRENGTH CORROSION-RESISTANT MARTENSITIC STEEL AND METHOD FOR ITS PRODUCTION | 2021 |
|
RU2807645C2 |
| HARDENED MARTENSITIC STEEL WITH LOW CONTENT OF COBALT, METHOD FOR MAKING PART FROM THAT STEEL, AND PART OBTAINED BY MEANS OF ABOVE SAID METHOD | 2009 |
|
RU2497974C2 |
| HIGH STRENGTH LOW ALLOY STEEL FOR AGRICULTURAL MACHINERY | 2022 |
|
RU2798238C1 |
