large-pg娱乐游戏官网
large-scale energy storage of high-strength steel plates for large oil storage tanks
1 main use: large-line energy-welding high-strength steel plates for large-scale petroleum storage tanks are mainly used for the construction of large-scale floating-top oil storage tanks. they are the main raw materials for the construction of large-scale oil storage tanks at home and abroad, requiring high strength, high toughness and excellent the welding performance, especially with large-line energy welding performance, has a high low-temperature impact toughness in the heat affected zone of the steel plate under the condition of input line energy ≤100kj/cm.
2 grades and standards: product grade: jgr610e, equivalent to 12mnnivr, spv490q
the steel grade consists of jg, r, the specified tensile strength minimum and the english letters representing the characteristics of the steel. the "jg" is the "ji" character of jigang group co., ltd. and the high-intensity "high" chinese pinyin head. write the letter, "r" refers to the first letter of the chinese pinyin of the pressure container "容". in the case of large line energy characteristics, the english first letter "e" is used.
3 technical conditions of supply
3.1 product specifications: 12～50×1800～3100×6000～30000
牌号 | 化学成分（质量分数）/% | |||||||||
c | si | mn | p | s | v | mo | ni | ceq | pcm | |
jgr610e (12mnnivr) | ≤0.15 | 0.15～0.40 | 1.20～1.60 | ≤0.015 | ≤0.005 | 0.020～0.060 | ≤0.30 | 0.15～0.40 | ≤0.42 | ≤0.23 |
3.3 mechanical properties
牌号 | 屈服强度rel，mpa | 抗拉强度rm，mpa | 断后伸长率a,% | 冲击试验（横向） | 横向弯曲试验 | |
温度，℃ | akv，j | b＝2a，180° | ||||
jgr610e (12mnnivr) | ≥490 | 610～730 | ≥17 | -20 | ≥100 | d＝3a |
3.4 welding performance: after 50-100kj/cm large-line energy welding, the tensile strength is above 610mpa, and the average value of impact work at -15°c is ≥47j, and the single value is ≥33j.
3.5 delivery status: online quenching tempering.
executive standard: gb19189-2003 "quenched and tempered high-strength steel plate for pressure vessels"
q/lys 222-2006 "high-strength steel plate for large-line energy welding"