| SHEET FROM STRUCTURAL CRYOGENIC HIGH-STRENGTH STEEL AND METHOD OF ITS PRODUCTION | |
| 2023-10-03 | |
| 专利权人 | URAL STEEL STOCK CO (URAL-Non-standard) |
| 申请日期 | 2023-10-03 |
| 专利号 | RU2833571-C1 |
| 成果简介 | NOVELTY - Invention relates to metallurgy, namely to production of sheets from structural cryogenic high-strength steel used for production of equipment intended for transportation and storage of liquefied natural gas. Continuously cast steel slab is produced containing the following components, wt.%: carbon 0.05-0.10, silicon 0.15-0.35, manganese 0.30-1.00, aluminium 0.02-0.05, chrome not more than 0.20, nickel 5.50-7.00, titanium from more than 0.025 to 0.035, sulphur not more than 0.003, phosphorus not more than 0.015, nitrogen not more than 0.012, arsenic not more than 0.08, copper from more than 0.40 to 1.00, molybdenum 0.10-0.20, niobium 0.02-0.06, the rest is iron and unavoidable impurities. Slab is heated and hot rolled to produce sheets and cooled to ambient temperature. Normalization of sheets by heating to temperature of 900-960 °C with subsequent holding for at least 1-2 min/mm and further cooling in air to ambient temperature. Sheets are quenched by heating to temperature of 700-750 °C with holding for at least 1-2 min/mm and subsequent cooling with water to ambient temperature and tempering at temperature of 600-720 °C with holding 1.0-5.5 min/mm and subsequent cooling in air to ambient temperature to obtain a structure which is a rack-type martensite of a dislocation type with finely dispersed cuprous precipitates and containing at least 5% of residual austenite along the boundaries of martensite crystals. USE - Metallurgy. ADVANTAGE - Providing high strength properties and compliance with requirements for values of impact strength at cryogenic temperatures. 2 cl, 3 tbl, 1 ex |
| IPC 分类号 | C21D-008/02 ; C22C-038/42 ; C22C-038/44 ; C22C-038/48 ; C22C-038/50 |
| 国家 | 俄罗斯 |
| 专业领域 | 材料科学 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/20155 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | URAL STEEL STOCK CO (URAL-Non-standard) |
| 推荐引用方式 GB/T 7714 | KUNITSYN G A,ANDREY A,PROKOPENKO L V,et al. SHEET FROM STRUCTURAL CRYOGENIC HIGH-STRENGTH STEEL AND METHOD OF ITS PRODUCTION. RU2833571-C1[P]. 2023. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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