JP2007517139A - steel - Google Patents

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JP2007517139A
JP2007517139A JP2006546883A JP2006546883A JP2007517139A JP 2007517139 A JP2007517139 A JP 2007517139A JP 2006546883 A JP2006546883 A JP 2006546883A JP 2006546883 A JP2006546883 A JP 2006546883A JP 2007517139 A JP2007517139 A JP 2007517139A
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steel
nickel
manganese
molybdenum
phosphorus
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ゴロヴィン，セルゲイ・ヴラディミロヴィッチ
ゴシュカデラ，セルゲイ・ヴラディミロヴィッチ
ドゥブ，アレクセイ・ヴラディミロヴィッチ
ドゥブ，ヴラディミール・ゼメノヴィッチ
ロボダ，アレクサンドル・ゼルゲーヴィッチ
マルコフ，セルゲイ・イヴァノヴィッチ
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ザクリートエ・アクツィオネルノエ・オヴシェストヴォ・ナウチノ−プロイズボドゥストヴェンノエ・オビェジンニエイエ “ポリメタール”
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    • 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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • C22C38/18—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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Lubricants (AREA)
  • Earth Drilling (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Materials For Medical Uses (AREA)

Abstract

This is an invention in metallurgy, referring specifically to steel with high ductility in subzero temperatures, good weldability, resistance to brittle behavior and corrosion, heat-resistance in high temperatures. Such steel can be used for the production of oil pipelines, natural gas pipelines, product pipelines, offshore platforms, welded structures and containers which can operate under pressure, different equipment and its component parts operating in temperatures from - 100°C to +450°C. The steel containing carbon, manganese, silicium, chrome, nickel, vanadium, niobium, titanium, aluminium, calcium, sulphur, phosphorus, nitrogen, copper, stibium, stannum, arsenic and iron additionally includes molybdenum, with the following component ratio (weight, %): This being the case, total content of nickel and manganese is related to molybdenum and phosphorus content (weight. %) according to the following equation: Ni + Mn 1 + Mo ‹ P Œ© 0.03

Description

発明の詳細な説明Detailed Description of the Invention

技術分野
本発明は冶金、特にサブゼロ温度における高延性、良好な溶接性、耐脆性化性能及び耐食性及び高温耐熱性を有する鋼における発明である。このような鋼は、加圧下で作動可能なオイルパイプライン、天然ガスパイプライン、製品パイプライン、海上作業船、溶接構造物及び容器及び-100℃乃至+450℃の温度で作動する他の装置及びその構成部品の製造に用いられる。 TECHNICAL FIELD The present invention is an invention in metallurgy, particularly in steels having high ductility at sub-zero temperatures, good weldability, brittleness resistance and corrosion resistance, and high temperature heat resistance. Such steels include oil pipelines, natural gas pipelines, product pipelines, offshore work vessels, welded structures and vessels that can operate under pressure and other equipment that operates at temperatures between -100 ° C and + 450 ° C and Used to manufacture the component.

背景技術
次の構成成分比率(重量％)を有する鋼が存在する。
炭素 0.03 - 0.11
マンガン 0.9 - 1.8
ケイ素 0.06 - 0.6
クロム 0.005 - 0.30
ニッケル 0.005 - 0.3
バナジウム 0.02-0.12
ニオブ 0.03-0.1
チタン 0.01-0.04
アルミニウム 0.01-0.055
カルシウム 0.001-0.005
硫黄 0.0005-0.008
リン 0.0005-0.010
窒素 0.001-0.012
銅 0.005-0.25
アンチモン 0.001-0.005
スズ 0.001-0.007
ヒ素 0.001-0.008
鉄 残部
(ロシア連邦特許第2141002号、公開日 10.11.1999)。 BACKGROUND ART There are steels having the following component ratios (wt%).
Carbon 0.03-0.11
Manganese 0.9-1.8
Silicon 0.06-0.6
Chromium 0.005-0.30
Nickel 0.005-0.3
Vanadium 0.02-0.12
Niobium 0.03-0.1
Titanium 0.01-0.04
Aluminum 0.01-0.055
Calcium 0.001-0.005
Sulfur 0.0005-0.008
Phosphorus 0.0005-0.010
Nitrogen 0.001-0.012
Copper 0.005-0.25
Antimony 0.001-0.005
Tin 0.001-0.007
Arsenic 0.001-0.008
Iron balance
(Russian Federal Patent No. 2141002, published 10.11.1999).

この鋼は、-100℃乃至+450℃の温度で作動するオイルパイプライン、天然ガスパイプライン、製品パイプライン及び他の溶接構造物の製造に必要なすべての物性を有する。しかしこのような鋼は、20mm厚を超える鋼板製の上記及び他の製品の製造には不十分な強度特性を有するものである。この欠点は合金材の含量をより高いものとすることにより硬化特性を増強して除去することができるが、このような鋼は脆性挙動をあらわす可能性がある。   This steel has all the physical properties necessary for the production of oil pipelines, natural gas pipelines, product pipelines and other welded structures operating at temperatures between -100 ° C and + 450 ° C. However, such steels have strength properties that are insufficient for the manufacture of the above and other products made of steel sheets greater than 20 mm thick. This drawback can be eliminated by increasing the hardenability by increasing the alloy content, but such steels may exhibit brittle behavior.

発明の開示
本発明は、鋼の強度物性の改良を目的とするものである。本発明の結果は次のものである。すなわち、厚さ50mmまでの鋼板及びビレットが次の物性、すなわち、550 N/mm2を超える降服応力及び620 N/mm2を超える破断強さを有し、-100℃までの低い温度において高延性を保持し、製造及び作動中は耐脆性挙動を有し、工場及び野外環境において良好な溶接性を有するものである。 DISCLOSURE OF THE INVENTION The present invention is intended to improve the strength properties of steel. The results of the present invention are as follows. That is, steel sheets and billets up to 50 mm thick have the following physical properties: yield stress exceeding 550 N / mm 2 and breaking strength exceeding 620 N / mm 2 and high at low temperatures up to -100 ° C. It retains ductility, has brittle behavior during manufacturing and operation, and has good weldability in factories and outdoor environments.

技術的には、この必要な結果は、炭素、マンガン、ケイ素、クロム、ニッケル、バナジウム、ニオブ、チタン、アルミニウム、カルシウム、硫黄、リン、窒素、銅、アンチモン、スズ、ヒ素及び鉄を含有する該鋼が更にモリブデンを含み、次の構成成分比率(重量％)：
炭素 0.02-0.11
マンガン 0.10-1.8
ケイ素 0.06-0.6
クロム 0.005-0.30
ニッケル 0.005-1.0
バナジウム 0.01-0.12
ニオブ 0.02-0.1
チタン 0.01-0.04
アルミニウム 0.01-0.05
カルシウム 0.0005-0.008
硫黄 0.0005-0.008
リン 0.001-0.012
窒素 0.001-0.012
銅 0.005-0.25
アンチモン 0.0001-0.005
スズ 0.0001-0.007
ヒ素 0.0001-0.008
モリブデン 0.0001-0.5
鉄 残部
を有することにより得られる。 Technically, this required result is that the carbon, manganese, silicon, chromium, nickel, vanadium, niobium, titanium, aluminum, calcium, sulfur, phosphorus, nitrogen, copper, antimony, tin, arsenic and iron The steel further contains molybdenum and the following component ratios (wt%):
Carbon 0.02-0.11
Manganese 0.10-1.8
Silicon 0.06-0.6
Chromium 0.005-0.30
Nickel 0.005-1.0
Vanadium 0.01-0.12
Niobium 0.02-0.1
Titanium 0.01-0.04
Aluminum 0.01-0.05
Calcium 0.0005-0.008
Sulfur 0.0005-0.008
Phosphorus 0.001-0.012
Nitrogen 0.001-0.012
Copper 0.005-0.25
Antimony 0.0001-0.005
Tin 0.0001-0.007
Arsenic 0.0001-0.008
Molybdenum 0.0001-0.5
Obtained by having iron balance.

この場合、ニッケル及びマンガンの総含量は、次式：   In this case, the total content of nickel and manganese is:

Figure 2007517139
Figure 2007517139

に従ってモリブデン及びリンの含量(重量％)に関係する。
構成成分のこの列挙した割当て量で支持される鋼中におけるニッケル、マンガン、モリブデン及びリンを上記のごとく限定することにより、厚さ50mmまでの鋼板の硬化物性が改良され、低温(-100℃まで)における強度及び延性の高い値が得られ、且つこれらの鋼板製の製品の製造及び使用過程での脆化が除去される。 According to the content of molybdenum and phosphorus (wt%).
By limiting nickel, manganese, molybdenum and phosphorus in steels supported by this listed quota of constituents as described above, the hardened properties of steel sheets up to 50 mm thick are improved and low temperature (up to -100 ° C). The strength and ductility of the steel sheet are high, and embrittlement in the process of manufacturing and using these steel products is eliminated.

発明を実施するための最良の態様
表1は、公知の鋼の組成と比較したこの鋼の3種の溶湯の化学組成を表す。これらの組成はモリブデンとニッケルの鋼板強度への寄与を評価するように選択されている。 BEST MODE FOR CARRYING OUT THE INVENTION Table 1 shows the chemical composition of the three melts of this steel compared to the composition of known steels. These compositions are selected to evaluate the contribution of molybdenum and nickel to steel sheet strength.

全ての溶湯は真空誘導炉で行われた。炉への装填は、アームコ鉄及び組成を変化させるためのニッケル、フェロモリブデン、銅及び他の装入材料とからなっていた。炉での必要な加圧(underpressure)が達成されると、該装入物の溶融が始まった。溶融が完了して金属を1630乃至1650℃へ加熱すると該装入物は脱気され、そして必要な所定量のマンガン、フェロバナジウム及びフェロニオブが該溶融池へ添加され、次いで脱酸素剤(フェロシリコン、アルミニウム及びフェロチタン)が添加された。   All the melts were performed in a vacuum induction furnace. The furnace charge consisted of armco iron and nickel, ferromolybdenum, copper and other charge materials to change the composition. Once the required underpressure in the furnace was achieved, the charge began to melt. When melting is complete and the metal is heated to 1630-1650 ° C., the charge is degassed and the required amounts of manganese, ferrovanadium and ferroniobium are added to the molten pool and then deoxidizer (ferrosilicon). , Aluminum and ferrotitanium).

液体鋼の温度が必要なレベル(1560乃至1580℃)に達すると、この空気を含まない金属を直接精錬るつぼから鋳型へ流し込んだ。次いで、成形された鋳塊を鋳型中で非真空での常圧下で冷却した。   When the temperature of the liquid steel reached the required level (1560-1580 ° C.), this air-free metal was poured directly from the refining crucible into the mold. The formed ingot was then cooled in a mold under normal pressure and non-vacuum.

全体で、12の溶湯を真空誘導炉で行った。全ての溶湯について金属の化学組成分析を行い、その結果に基づいて当量炭素含量が0.37の3つの溶湯を選択した。
当量炭素含量は次式： In total, 12 melts were performed in a vacuum induction furnace. The chemical composition analysis of the metal was performed on all the molten metals, and three molten metals having an equivalent carbon content of 0.37 were selected based on the results.
The equivalent carbon content is:

Figure 2007517139
Figure 2007517139

により決定した。 Determined by.

表2は、この当量炭素含量(Ceq)が0.37である公知の組成の溶湯と比較したこれらの溶湯の物性を示す。得られた結果は、上記組成の新規な鋼は50mm断面において必要な強度物性と低温での高延性を有していることを示している。溶湯1、2及び3におけるニッケルおよびマンガンの総含量とモリブデン及びリンの濃度との比率はそれぞれ0.01、0.0057及び0.0064、すなわち0.03未満である。 Table 2 shows the physical properties of these melts compared to those of known compositions whose equivalent carbon content (C eq ) is 0.37. The obtained results show that the new steel having the above composition has the required strength properties and high ductility at low temperatures in a 50 mm section. The ratio between the total content of nickel and manganese and the concentration of molybdenum and phosphorus in the melts 1, 2 and 3 is 0.01, 0.0057 and 0.0064, respectively, ie less than 0.03.

Figure 2007517139
Figure 2007517139

Figure 2007517139
Figure 2007517139

Claims (1)

炭素、マンガン、ケイ素、クロム、ニッケル、バナジウム、ニオブ、チタン、アルミニウム、カルシウム、硫黄、リン、窒素、銅、アンチモン、スズ、ヒ素及び鉄を含有する鋼であって、更にモリブデン含量を有し、次の構成成分比率(重量％):
炭素 0.02-0.11
マンガン 0.10-1.8
ケイ素 0.06-0.6
クロム 0.005-0.30
ニッケル 0.005-1.0
バナジウム 0.01-0.12
ニオブ 0.02-0.1
チタン 0.01-0.04
アルミニウム 0.01-0.05
カルシウム 0.0005-0.008
硫黄 0.0005-0.008
リン 0.001-0.012
窒素 0.001-0.012
銅 0.005-0.25
アンチモン 0.0001-0.005
スズ 0.0001-0.007
ヒ素 0.0001-0.008
モリブデン 0.0001-0.5
鉄 残部
を有することを特徴とし、この場合、ニッケル及びマンガンの総含量が、次式：
Figure 2007517139
 に従ってモリブデン及びリンの含量(重量％)と関係する鋼。 Steel containing carbon, manganese, silicon, chromium, nickel, vanadium, niobium, titanium, aluminum, calcium, sulfur, phosphorus, nitrogen, copper, antimony, tin, arsenic, and iron, and further having a molybdenum content, The following component ratio (wt%):
Carbon 0.02-0.11
Manganese 0.10-1.8
Silicon 0.06-0.6
Chromium 0.005-0.30
Nickel 0.005-1.0
Vanadium 0.01-0.12
Niobium 0.02-0.1
Titanium 0.01-0.04
Aluminum 0.01-0.05
Calcium 0.0005-0.008
Sulfur 0.0005-0.008
Phosphorus 0.001-0.012
Nitrogen 0.001-0.012
Copper 0.005-0.25
Antimony 0.0001-0.005
Tin 0.0001-0.007
Arsenic 0.0001-0.008
Molybdenum 0.0001-0.5
It is characterized by having a balance of iron, in which case the total content of nickel and manganese is:
Figure 2007517139
 According to the molybdenum and phosphorus content (wt%) according to.
JP2006546883A 2003-12-30 2004-08-06 steel Pending JP2007517139A (en)

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KR (1) KR20070008543A (en)
CN (1) CN100513622C (en)
AT (1) ATE473310T1 (en)
DE (1) DE602004028045D1 (en)
RU (1) RU2241780C1 (en)
UA (2) UA78268C2 (en)
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UA8385U (en) 2005-08-15
ATE473310T1 (en) 2010-07-15
EP1705260B1 (en) 2010-07-07
UA78268C2 (en) 2007-03-15
WO2005064032A1 (en) 2005-07-14
CN1926257A (en) 2007-03-07
CN100513622C (en) 2009-07-15
EP1705260A1 (en) 2006-09-27
KR20070008543A (en) 2007-01-17
DE602004028045D1 (en) 2010-08-19
RU2241780C1 (en) 2004-12-10
EP1705260A4 (en) 2008-08-13

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