CN116536588A - 一种深海抗酸管线用钢及其生产方法 - Google Patents
一种深海抗酸管线用钢及其生产方法 Download PDFInfo
- Publication number
- CN116536588A CN116536588A CN202310632996.7A CN202310632996A CN116536588A CN 116536588 A CN116536588 A CN 116536588A CN 202310632996 A CN202310632996 A CN 202310632996A CN 116536588 A CN116536588 A CN 116536588A
- Authority
- CN
- China
- Prior art keywords
- percent
- steel
- equal
- less
- deep sea
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 239000002253 acid Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 8
- 238000003723 Smelting Methods 0.000 claims abstract description 7
- 238000009749 continuous casting Methods 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims description 38
- 229910052739 hydrogen Inorganic materials 0.000 claims description 22
- 239000001257 hydrogen Substances 0.000 claims description 22
- 238000010079 rubber tapping Methods 0.000 claims description 22
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 16
- 238000005261 decarburization Methods 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 16
- 150000002431 hydrogen Chemical class 0.000 claims description 16
- 239000011777 magnesium Substances 0.000 claims description 16
- 229910052749 magnesium Inorganic materials 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005275 alloying Methods 0.000 claims description 5
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 abstract 1
- 230000008520 organization Effects 0.000 abstract 1
- 238000009849 vacuum degassing Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0056—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 using cored wires
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
本发明公开了一种深海抗酸管线用钢及其生产方法,涉及钢铁生产技术领域,其化学成分及质量百分比如下:C:0.010%~0.040%,Si:0.10%~0.30%,Mn:1.00%~1.40%,P≤0.013%,S≤0.0010%,Nb:0.030%~0.070%,V:0.30%~0.70%,Ti:0.008%~0.030%,Cr:0.10%~0.30%,Ni:0.10%~0.30%,Mo≤0.50%,Cu:0.10%~0.30%,B≤0.0005%,Mg:0.0008%~0.0015%,Al:0.015%~0.030%,余量为Fe和不可避免的杂质。采用顶底复吹、转炉冶炼、真空脱气获得高洁净度钢水,使用连铸大压下技术、控制轧制工艺获得以块状铁素体为主的组织类型,满足深海抗酸性服役用管线钢。
Description
技术领域
本发明涉及钢铁生产技术领域,特别是涉及一种深海抗酸管线用钢及其生产方法。
背景技术
随着钢铁工业迅速发展,用户对钢材性能要求愈来愈严格,因此,提升钢材品质是各大钢铁企业亟需解决的问题。石油运输采用价格低廉、安全性高的管道运输越来越多,由于原油中含有酸性气体,对钢材腐蚀速度快,容易在钢板心部产生氢致裂纹导致钢板开裂。同时,抗酸腐蚀管线钢是主要用来制造输送酸性天然气的管道,酸性天然气具有超强的腐蚀性及冲击摩擦力,因此钢板需要具有抗酸耐腐蚀性能,同时需要具有低温抗止裂性能,为了避免制管过程的应力导致开裂,需要保证产品厚度方向的硬度稳定并符合规范要求,因此,深海抗酸管线用钢是石油天然气用钢中生产难度最大的一类。
发明内容
本发明针对上述技术问题,克服现有技术的缺点,提供一种深海抗酸管线用钢,其化学成分及质量百分比如下:C:0.010%~0.040%,Si:0.10%~0.30%,Mn:1.00%~1.40%,P≤0.013%,S≤0.0010%,Nb:0.030%~0.070%,V:0.30%~0.70%,Ti:0.008%~0.030%,Cr:0.10%~0.30%,Ni:0.10%~0.30%,Mo≤0.50%,Cu:0.10%~0.30%,B≤0.0005%,Mg:0.0008%~0.0015%,Al:0.015%~0.030%,余量为Fe和不可避免的杂质。
本发明进一步限定的技术方案是:
前所述的一种深海抗酸管线用钢,其化学成分及质量百分比如下:C:0.020%~0.035%,Si:0.20%~0.23%,Mn:1.10%~1.20%,P≤0.012%,S≤0.0010%,Nb:0.040%~0.060%,V:0.40%~0.50%,Ti:0.010%~0.022%,Cr:0.20%~0.25%,Ni:0.15%~0.20%,Mo≤0.50%,Cu:0.20%~0.25%,B≤0.0005%,Mg:0.0010%~0.0013%,Al:0.015%~0.030%,余量为Fe和不可避免的杂质。
本发明的另一目的在于提供一种深海抗酸管线用钢生产方法,包括:
S1、采用顶底复吹转炉冶炼,转炉出钢温度1680~1720度,出钢氧含量600~1000ppm,出钢加入低碳锰铁、铝块脱氧,出钢后钢水氧含量控制在50ppm~200ppm;
S2、钢水到达RH后进行真空脱碳处理,脱碳保证≤0.010%,脱碳结束后送至LF进行脱氧合金化操作,成分满足要求后使用镁铝线进行镁处理,镁处理后钢水静搅15~30min;
S3、精炼后钢水送至连铸进行浇铸,浇铸过程热20~30度,采用水平动态轻压下,压下量13~15mm;
S4、铸坯分切后送至扩氢炉进行扩氢操作,扩氢温度630~650度,保温时间20~30小时;
S5、铸坯扩氢结束后堆冷48小时,表检合格入加热炉加热,加热温度1120~1220度,加热时间9.0~13min/cm;
S6、采用控制轧制工艺,二开温度800~950度,终轧温度780~880度,开冷温度770~830度,返红温度400~600度;
S7、钢板剪切、标识、探伤后入库发货。
前所述的一种深海抗酸管线用钢生产方法,步骤S1,出钢加入500kg低碳锰铁、30~80kg铝块脱氧。
前所述的一种深海抗酸管线用钢生产方法,步骤S2,镁线使用量280~320米,。
前所述的一种深海抗酸管线用钢生产方法,成品钢壁厚6~50cm,钢级BMOS~X70MOS。
前所述的一种深海抗酸管线用钢生产方法,
本发明的有益效果是:
(1)本发明采用低碳、超低磷硫设计,减少了铸坯心部偏析元素聚集,降低锰元素的使用量,同时增加Cr、Ni、Cu的使用量,可以有效细化组织晶粒度,增加铸坯的淬透性,满足了产品的使用性能要求;
(2)本发明采用高过热度、大压下技术,可以有效增加铸坯心部的致密度,减轻带状组织的危害,高过热度有利夹杂物在冶炼过程上浮,有效提升钢水纯净度;
(3)本发明采用RH先脱碳处理,保证了产品碳含量的稳定,避免了因为碳含量高导致硬相组织生产量,避免了腐蚀性气体的渗透,稳定了抗酸管线HIC性能,保证了铁素量的稳定性;
(4)本发明采用扩氢技术,有效降低了坯料中气体含量的聚集,减少心部、1/4负偏析带组织的不稳定,解决了心部及1/4处组织间隙不稳性,提高了抗酸性能的稳定性;
(5)本发明中镁冶金技术的应用,可以改善硫系夹杂物的球化,生产细小的不大于10μm的夹杂物,并形成原始的奥氏体晶粒的形核质点,可以有效细化轧板的组织晶粒度,改善钢板的韧性与强度,从而提高抗酸管线HIC\CTOD性能的稳定性。
附图说明
图1为本发明钢板的金相组织图。
实施方式
实施例
本实施例提供的一种深海抗酸管线用钢,钢级X65MOS,化学成分及质量百分比如下:C:0.013%,Si:0.15%,Mn:1.13%,P:0.008%,S:0.0008%,Nb:0.039%,V:0.36%,Ti:0.017%,Cr:0.19%,Ni:0.150%,Mo:0.003%,Cu:0.16%,B:0.0002%,Mg:0.0009%,Al:0.027%,余量为Fe和不可避免的杂质。
生产方法包括:
S1、采用顶底复吹转炉冶炼,转炉出钢温度1693度,出钢氧含量850ppm,出钢加入500kg低碳锰铁、60kg铝块脱氧,出钢后钢水氧含量控制在80ppm;
S2、钢水到达RH后进行真空脱碳处理,脱碳保证≤0.010%,脱碳结束后送至LF进行脱氧合金化操作,成分满足要求后使用镁铝线进行镁处理,镁线使用量300米,镁处理后钢水静搅19min;
S3、精炼后钢水送至连铸进行浇铸,浇铸过程热26度,采用水平动态轻压下,压下量13mm;
S4、铸坯分切后送至扩氢炉进行扩氢操作,扩氢温度645度,保温时间26小时;
S5、铸坯扩氢结束后堆冷48小时,表检合格入加热炉加热,加热温度1150度,加热时间11min/cm;
S6、采用控制轧制工艺,二开温度850度,终轧温度810度,开冷温度798度,返红温度510度;
S7、钢板剪切、标识、探伤后入库发货。
实施例
本实施例提供的一种深海抗酸管线用钢,钢级X60MOS,化学成分及质量百分比如下:C:0.033%,Si:0.26%,Mn:1.29%,P:0.011%,S:≤0.0007%,Nb:0.063%,V:0.59%,Ti:0.017%,Cr:0.24%,Ni:0.27%,Mo:0.0020%,Cu:0.27%,B:0.0002%,Mg:0.0013%,Al:0.027%,余量为Fe和不可避免的杂质。
生产方法包括:
S1、采用顶底复吹转炉冶炼,转炉出钢温度1710度,出钢氧含量760ppm,出钢加入500kg低碳锰铁、50kg铝块脱氧,出钢后钢水氧含量控制在70ppm;
S2、钢水到达RH后进行真空脱碳处理,脱碳保证≤0.010%,脱碳结束后送至LF进行脱氧合金化操作,成分满足要求后使用镁铝线进行镁处理,镁线使用量290米,镁处理后钢水静搅17min;
S3、精炼后钢水送至连铸进行浇铸,浇铸过程热22度,采用水平动态轻压下,压下量13mm;
S4、铸坯分切后送至扩氢炉进行扩氢操作,扩氢温度650度,保温时间21小时;
S5、铸坯扩氢结束后堆冷48小时,表检合格入加热炉加热,加热温度1160度,加热时间9.7min/cm;
S6、采用控制轧制工艺,二开温度910度,终轧温度870度,开冷温度820度,返红温度560度;
S7、钢板剪切、标识、探伤后入库发货。
实施例
本实施例提供的一种深海抗酸管线用钢,钢级X65MOS,化学成分及质量百分比如下:C:0.033%,Si:0.17%,Mn:1.19%,P:0.010%,S:≤0.0007%,Nb:0.051%,V:0.53%,Ti:0.013%,Cr:0.17%,Ni:0.19%,Mo:0.0030%,Cu:0.19%,B:0.0001%,Mg:0.0014%,Al:0.023%,余量为Fe和不可避免的杂质。
生产方法包括:
S1、采用顶底复吹转炉冶炼,转炉出钢温度1681度,出钢氧含量900ppm,出钢加入500kg低碳锰铁、80kg铝块脱氧,出钢后钢水氧含量控制在150ppm;
S2、钢水到达RH后进行真空脱碳处理,脱碳保证≤0.010%,脱碳结束后送至LF进行脱氧合金化操作,成分满足要求后使用镁铝线进行镁处理,镁线使用量320米,镁处理后钢水静搅26min;
S3、精炼后钢水送至连铸进行浇铸,浇铸过程热21度,采用水平动态轻压下,压下量15mm;
S4、铸坯分切后送至扩氢炉进行扩氢操作,扩氢温度650度,保温时间30小时;
S5、铸坯扩氢结束后堆冷48小时,表检合格入加热炉加热,加热温度1210度,加热时间11min/cm;
S6、采用控制轧制工艺,二开温度850度,终轧温度810度,开冷温度798度,返红温度468度;
S7、钢板剪切、标识、探伤后入库发货。
实施例1、2、3钢板力学性能检测如表1,HIC/CTOD检测如表2:
表1
表2
采用本发明,成功开发并供货了中东深海抗酸管线用钢,同时该方案更适用于陆地用抗酸管线用钢及有低温韧性要求的管线钢板。
除上述实施例外,本发明还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案,均落在本发明要求的保护范围。
Claims (6)
1.一种深海抗酸管线用钢,其特征在于:其化学成分及质量百分比如下:C:0.010%~0.040%,Si:0.10%~0.30%,Mn:1.00%~1.40%,P≤0.013%,S≤0.0010%,Nb:0.030%~0.070%,V:0.30%~0.70%,Ti:0.008%~0.030%,Cr:0.10%~0.30%,Ni:0.10%~0.30%,Mo≤0.50%,Cu:0.10%~0.30%,B≤0.0005%,Mg:0.0008%~0.0015%,Al:0.015%~0.030%,余量为Fe和不可避免的杂质。
2.根据权利要求1所述的一种深海抗酸管线用钢,其特征在于:其化学成分及质量百分比如下:C:0.020%~0.035%,Si:0.20%~0.23%,Mn:1.10%~1.20%,P≤0.012%,S≤0.0010%,Nb:0.040%~0.060%,V:0.40%~0.50%,Ti:0.010%~0.022%,Cr:0.20%~0.25%,Ni:0.15%~0.20%,Mo≤0.50%,Cu:0.20%~0.25%,B≤0.0005%,Mg:0.0010%~0.0013%,Al:0.015%~0.030%,余量为Fe和不可避免的杂质。
3.一种深海抗酸管线用钢生产方法,其特征在于:应用于权利要求1-2任意一项,包括:
S1、采用顶底复吹转炉冶炼,转炉出钢温度1680~1720度,出钢氧含量600~1000ppm,出钢加入低碳锰铁、铝块脱氧,出钢后钢水氧含量控制在50ppm~200ppm;
S2、钢水到达RH后进行真空脱碳处理,脱碳保证≤0.010%,脱碳结束后送至LF进行脱氧合金化操作,成分满足要求后使用镁铝线进行镁处理,镁处理后钢水静搅15~30min;
S3、精炼后钢水送至连铸进行浇铸,浇铸过程热20~30度,采用水平动态轻压下,压下量13~15mm;
S4、铸坯分切后送至扩氢炉进行扩氢操作,扩氢温度630~650度,保温时间20~30小时;
S5、铸坯扩氢结束后堆冷48小时,表检合格入加热炉加热,加热温度1120~1220度,加热时间9.0~13min/cm;
S6、采用控制轧制工艺,二开温度800~950度,终轧温度780~880度,开冷温度770~830度,返红温度400~600度;
S7、钢板剪切、标识、探伤后入库发货。
4.根据权利要求3所述的一种深海抗酸管线用钢生产方法,其特征在于:所述步骤S1,出钢加入500kg低碳锰铁、30~80kg铝块脱氧。
5.根据权利要求3所述的一种深海抗酸管线用钢生产方法,其特征在于:所述步骤S2,镁线使用量280~320米。
6.根据权利要求1所述的一种深海抗酸管线用钢生产方法,其特征在于:成品钢壁厚6~50cm,钢级BMOS~X70MOS。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310632996.7A CN116536588A (zh) | 2023-05-31 | 2023-05-31 | 一种深海抗酸管线用钢及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202310632996.7A CN116536588A (zh) | 2023-05-31 | 2023-05-31 | 一种深海抗酸管线用钢及其生产方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN116536588A true CN116536588A (zh) | 2023-08-04 |
Family
ID=87452441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202310632996.7A Pending CN116536588A (zh) | 2023-05-31 | 2023-05-31 | 一种深海抗酸管线用钢及其生产方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116536588A (zh) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106676428A (zh) * | 2015-11-06 | 2017-05-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 耐大气腐蚀型钢钢水和含铌氮耐大气腐蚀型钢及其生产方法 |
CN107099747A (zh) * | 2017-04-27 | 2017-08-29 | 南京钢铁股份有限公司 | 一种控制抗酸管线钢大型夹杂物的生产工艺 |
CN107587048A (zh) * | 2016-07-08 | 2018-01-16 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种含钒氮耐大气腐蚀型钢钢水和耐大气腐蚀型钢及其生产方法 |
CN108998746A (zh) * | 2017-12-25 | 2018-12-14 | 武汉科技大学 | 一种高抗hic性能的x70级管线钢及其制备方法 |
CN109811257A (zh) * | 2019-01-21 | 2019-05-28 | 南京钢铁股份有限公司 | 一种深海抗酸管线钢及冶炼方法 |
CN113046655A (zh) * | 2021-02-01 | 2021-06-29 | 南京钢铁股份有限公司 | 一种低温韧性优异的宽厚规格管线钢及其制造方法 |
CN113278877A (zh) * | 2021-02-01 | 2021-08-20 | 南京钢铁股份有限公司 | 一种高洁净度管线钢及其冶炼方法 |
CN115572901A (zh) * | 2022-09-30 | 2023-01-06 | 鞍钢集团北京研究院有限公司 | 一种630MPa级高调质稳定性低碳低合金钢板及其制造方法 |
-
2023
- 2023-05-31 CN CN202310632996.7A patent/CN116536588A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106676428A (zh) * | 2015-11-06 | 2017-05-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 耐大气腐蚀型钢钢水和含铌氮耐大气腐蚀型钢及其生产方法 |
CN107587048A (zh) * | 2016-07-08 | 2018-01-16 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种含钒氮耐大气腐蚀型钢钢水和耐大气腐蚀型钢及其生产方法 |
CN107099747A (zh) * | 2017-04-27 | 2017-08-29 | 南京钢铁股份有限公司 | 一种控制抗酸管线钢大型夹杂物的生产工艺 |
CN108998746A (zh) * | 2017-12-25 | 2018-12-14 | 武汉科技大学 | 一种高抗hic性能的x70级管线钢及其制备方法 |
CN109811257A (zh) * | 2019-01-21 | 2019-05-28 | 南京钢铁股份有限公司 | 一种深海抗酸管线钢及冶炼方法 |
CN113046655A (zh) * | 2021-02-01 | 2021-06-29 | 南京钢铁股份有限公司 | 一种低温韧性优异的宽厚规格管线钢及其制造方法 |
CN113278877A (zh) * | 2021-02-01 | 2021-08-20 | 南京钢铁股份有限公司 | 一种高洁净度管线钢及其冶炼方法 |
CN115572901A (zh) * | 2022-09-30 | 2023-01-06 | 鞍钢集团北京研究院有限公司 | 一种630MPa级高调质稳定性低碳低合金钢板及其制造方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101253890B1 (ko) | 중심부 물성 및 수소유기균열 저항성이 우수한 압력용기용 극후물 강판 및 그 제조방법 | |
CN113046655B (zh) | 一种低温韧性优异的宽厚规格管线钢及其制造方法 | |
CN111979483A (zh) | 一种利用常规热轧生产线生产q345r钢板的方法 | |
CN104294153A (zh) | 一种耐碱性腐蚀锚链钢及生产方法 | |
CN108504931A (zh) | 一种海底管线钢及其生产方法 | |
CN111411302B (zh) | 一种690MPa级大线能量焊接用压力容器用钢及其制造方法 | |
CN112522602A (zh) | 一种无铬钼抗h2s腐蚀l360ms螺旋焊管用热轧钢带及其制造方法 | |
CN115584441A (zh) | 一种屈服强度245MPa级输氢管道用热轧板卷及其生产方法 | |
CN113564460A (zh) | 一种无Cu、Cr、Ni、Mo、V低成本MnNb系抗酸管线钢热轧板卷及其制造方法 | |
CN113637911A (zh) | 一种800MPa级抗大线能量焊接压力容器用钢及其制备方法 | |
CN109930064B (zh) | 一种耐腐蚀高压锅炉管用耐热钢及其生产方法 | |
CN112853218A (zh) | 一种高速动车转向架用钢及其制造方法 | |
CN115717214B (zh) | 一种沿海大气环境炼化管道用钢及其制备方法 | |
CN116200682B (zh) | 一种高强度高韧性低温海工钢板及其制造方法 | |
CN111793765A (zh) | 一种极低成本含锰薄规格出口管线钢生产方法 | |
CN111519083A (zh) | 一种极低成本含锰厚规格出口管线钢生产方法 | |
CN114908292B (zh) | 一种先进核电机组蒸发器用钢板及其制造方法 | |
CN116536588A (zh) | 一种深海抗酸管线用钢及其生产方法 | |
CN114107800B (zh) | 一种原油货油舱上甲板用纵向变厚度钢板及生产方法 | |
CN116083816A (zh) | 一种高淬透性超大规格石油装备用钢及其生产工艺 | |
US20240018616A1 (en) | Low-temperature-resistant and corrosion-resistant cargo oil tank steel suitable for high-heat-input welding and manufacturing method therefor | |
CN115572905A (zh) | 一种690MPa级耐回火低温调质钢及其制造方法 | |
CN114959459A (zh) | 一种先进核电机组堆芯壳筒体用钢板及其制造方法 | |
CN113943889A (zh) | 一种屈服强度450MPa级抗H2S腐蚀管线钢及其生产方法 | |
CN113755756A (zh) | 一种稀土微合金化600MPa级系泊链用热轧圆钢及其生产方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination |