KR20070008543A - Steel - Google Patents

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KR20070008543A
KR20070008543A KR1020067014138A KR20067014138A KR20070008543A KR 20070008543 A KR20070008543 A KR 20070008543A KR 1020067014138 A KR1020067014138 A KR 1020067014138A KR 20067014138 A KR20067014138 A KR 20067014138A KR 20070008543 A KR20070008543 A KR 20070008543A
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mass
manganese
nickel
phosphorus
molybdenum
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KR1020067014138A
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Korean (ko)
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쎼르게이 블라찌미로위치 골로위느
쎼르게이 블라찌미로위치 고슈까쩨라
알렉쎼이 블라찌미로위치 두브
블라찌미르 쎼묘노위치 두브
알렉산드르 쎼르게이위치 로보다
쎼르게이 이와노위치 마르꼬브
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자크라토네 아크트션엘노에 오브체스보 나우치노-프로이조드스트베노에 오브에딘디네니에 "볼리메탈"
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Application filed by 자크라토네 아크트션엘노에 오브체스보 나우치노-프로이조드스트베노에 오브에딘디네니에 "볼리메탈" filed Critical 자크라토네 아크트션엘노에 오브체스보 나우치노-프로이조드스트베노에 오브에딘디네니에 "볼리메탈"
Publication of KR20070008543A publication Critical patent/KR20070008543A/en

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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
    • C22C38/60—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
    • C22C38/02—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
    • C22C38/04—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)
  • Earth Drilling (AREA)
  • Lubricants (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Materials For Medical Uses (AREA)

Abstract

The invention relates to metallurgy, in particular to steels which have a high toughness at negative temperatures, a good weldability, embrittlement and corrosion resistance, a high- temperature resistance and which can be used for oil and gas products pipelines, offshore platforms, welded structures, pressure vessels, different technical devices and the elements thereof operating at a temperature ranging from minus 100 ‹C to plus 450 ‹C. The inventive steel comprises carbon, manganese, silicium, chromium, nickel, vanadium, niobium, titanium, aluminium, calcium, sulphur, phosphorus, nitrogen, copper, stibium, stannum, arsenic and iron and in addition molybdenum at the following component ratio: 0.02 mass % carbon, manganese 0.10-1.8 mass %, 0.06-0.6 mass % silicium, 0.005-0.30 mass % chromium, 0.005-1.0 mass % nickel, 0.01-0.12 mass % vanadium, 0.02-0.10 mass % niobium, 0.01- 0.04 mass % titanium, 0.01-0.05 mass % aluminium, 0.0005-0.008 mass % calcium, 0.0005-0.008 mass % sulphur, 0.001-0.012 mass % phosphorus, 0. 001-0.012 mass % nitrogen, 0.005-0.25 mass % copper, 0.0001-0.005 mass % stibium, 0.0001-0.007 mass % stannum, 0.0001-0.008 mass % arsenic, 0.0001- 0.5 mass % molybdenum, the rest being iron. The total nickel and manganese mass % content is bound with the molybdenum and phosphorus mass % content according to a ratio (I). ® KIPO & WIPO 2007

Description

강철{STEEL}Steel {STEEL}

본 발명은 야금학, 특히 영하로 온도가 내려갈 때 연성이 높고 용접성이 좋고 부식 및 약화되는 과정에 대하여 경도가 높고, 높은 온도에 대하여 내열성이 강한 강철에 관한 것이며, 급유관, 가스관, 생산품관, 해양 플렛폼, 용접구조물, 또는 중압이 있을 때 작동하는 컨테이너, 영하100도 ~ 영상 450도 사이의 온도가 있을 때 작동하는 다양한 장비와 그의 부품을 생산하기 위하여 이용되는 것이다.FIELD OF THE INVENTION The present invention relates to steel, particularly ductile, weldable, corrosive and weakened, when the temperature drops below zero, and high hardness and heat resistant to high temperatures. It is used to produce platforms, welded structures, or containers that operate when there is medium pressure, and a variety of equipment and components that operate when temperatures are between minus 100 and 450 degrees.

아래와 같은 물질 성분비를 포함한 강철은 잘 알려진 강철이다.(중량, %)Steels with the following material composition ratios are well known steels (weight,%):

탄소 0.03-0.11Carbon 0.03-0.11 칼슘 0.001-0.005Calcium 0.001-0.005 망간 0.90-1, 80Manganese 0.90-1, 80 유황 0.0005-0.008Sulfur 0.0005-0.008 규소 0.06-0.60Silicon 0.06-0.60 인 0.0005-0.010Phosphorus 0.0005-0.010 크롬 0.005-0.30Chromium 0.005-0.30 질소 0.001-0.012Nitrogen 0.001-0.012 니켈 0.005-0.30Nickel 0.005-0.30 구리 0.005-0.25Copper 0.005-0.25 바나듐 0.02-0.12Vanadium 0.02-0.12 안티모늄 0.001-0.005Antimonium 0.001-0.005 니오브 0.03-0.10 Niobium 0.03-0.10 주석 0.001-0.007Tin 0.001-0.007 티탄 0.010-0.040Titanium 0.010-0.040 비소 0.001-0.008Arsenic 0.001-0.008 알루미늄 0.010-0.055Aluminum 0.010-0.055 철 나머지       Iron rest

(러시아연방 특허 제2141002호; 출원일 날짜 1999.11.10)(Russian Federal Patent No.2141002; filing date 1999.11.10)

위에 언급된 강철의 특성을 보면 영하100도 ~ 영상 450도 사이의 온도가 있을 때 작동하는 급유관, 가스관, 생산품관, 기타 용접구조물을 생산하기 위한 요구에 부합되는 것이다. 그러나 위에 언급된 제품이나 기타 제품을 두께 20mm이상으로 되는 철판으로 만들면 이미 알려진 강철의 강도가 충분하지 못할 것이다. 이 결함을 합금의 첨가물을 내용을 보다 많게 해서 강도 특성을 높이는 방식으로 해소할 수 있으나 강철이 약화될 수 있는 가능성이 많이 나타나게 된다.The characteristics of the steels mentioned above meet the requirements for producing oil pipes, gas pipes, product pipes and other welded structures that operate at temperatures between minus 100 and 450 degrees Celsius. However, if the above-mentioned products or other products are made of steel sheets with a thickness of 20 mm or more, the strength of known steel will not be sufficient. This defect can be resolved in a way that the additives of the alloy increase the strength properties by increasing the content, but there is a great possibility that steel may be weakened.

본 발명의 목적은 강철의 경도를 상승시키는데에 있다. 기술적 결과는 두께 50mm로 되는 철판이나 반제품 같은 경우, 550 H/mm2이상으로 되는 항복강도를 얻고 620 H/mm2이상으로 되는 파괴강도를 얻는 것이다.An object of the present invention is to raise the hardness of steel. The technical result is to obtain a yield strength of 550 H / mm 2 or more and a breakdown strength of 620 H / mm 2 or more for steel sheets or semi-finished products with a thickness of 50 mm.

기술적으로 필요한 결과는 탄소, 망간, 규소, 크롬, 니켈, 바나듐, 니오브, 티탄, 알루미늄, 칼슘, 유황, 인, 질소, 구리, 안티모늄, 주석, 비소, 철을 포함하는 강철이 아래와 같은 성분 조성비하에 첨부 몰리브덴을 포함함으로써 이루어진다. (중량, %)The technically necessary result is that steel containing carbon, manganese, silicon, chromium, nickel, vanadium, niobium, titanium, aluminum, calcium, sulfur, phosphorus, nitrogen, copper, antimonium, tin, arsenic, iron, By including molybdenum attached underneath. (weight, %)

탄소 0.02-0.11Carbon 0.02-0.11 칼슘 0.0005-0.008Calcium 0.0005-0.008 망간 0.10-1, 8Manganese 0.10-1, 8 유황 0.0005-0.008Sulfur 0.0005-0.008 규소 0.06-0.6Silicon 0.06-0.6 인 0.001-0.012Phosphorus 0.001-0.012 크롬 0.005-0.30Chromium 0.005-0.30 질소 0.001-0.012Nitrogen 0.001-0.012 니켈 0.005-1, 0Nickel 0.005-1, 0 구리 0.005-0.25Copper 0.005-0.25 바나듐 0.01-0.12Vanadium 0.01-0.12 안티모늄 0.0001-0.005Antimonium 0.0001-0.005 니오브 0.02-0.10Niobium 0.02-0.10 주석 0.0001-0.007Tin 0.0001-0.007 티탄 0.01-0.04Titanium 0.01-0.04 비소 0.0001-0.008Arsenic 0.0001-0.008 알루미늄 0.01-0.05Aluminum 0.01-0.05 몰리브덴 0.5 (최대로)Molybdenum 0.5 (max) 철 나머지Iron rest

여기에는 니켈과 망간의 전체 함유량은 아래와 같은 조성비에 따라 몰리브덴과 인의 함유량과 관련되어 있다. (중량, %)Here, the total content of nickel and manganese is related to the content of molybdenum and phosphorus according to the composition ratio as follows. (weight, %)

[(Ni + Mn )/1+Mo)]*P<0.03[(Ni + Mn) / 1 + Mo)] * P <0.03

강철내의 상술한 니켈, 망간, 몰리브덴, 인 한도는 열거된 조성비에 의해 이루어지며, 두께 50mm가 되는 철판의 경도 특성을 상승시키고 영하100도 이하에서는 철판의 경도와 연성을 높여주고 철판의 생산과정에서와 이들 철판으로부터 만든 제품의 사용시 취약성을 피할 수 있을 것이다. The above-mentioned nickel, manganese, molybdenum and phosphorus limits in the steel are made by the listed composition ratios, which increase the hardness characteristics of the steel sheet having a thickness of 50 mm, increase the hardness and ductility of the steel sheet below 100 degrees below zero, and in the production process of the steel sheet. And vulnerabilities in the use of products made from these plates.

표 1를 보면, 강철의 종래의 조성비와 비교해서 본 발명의 강철의 3 가지 용해물의 화학성분이 표시되어 있다. 화학성분을 몰리브덴과 니켈이 경도에 어느 정도 영향을 미치는가를 평가하기 위하여 특별하게 선택한다.Looking at Table 1, the chemical composition of the three melt | dissolution products of the steel of this invention is shown compared with the conventional composition ratio of steel. The chemical composition is specially selected to assess the extent to which molybdenum and nickel affect hardness.

모든 용해물은 진공 유도 전기로에 진행한다. 로 장입물은 순수한 철과 조성의 변화에 따라서 니켈, 페로몰리브덴, 구리, 또는 기타 장입 재료들로 구성되어 있다.All the melt proceeds to a vacuum induction furnace. The furnace charge consists of pure iron and nickel, fermolybdenum, copper, or other charge materials depending on the compositional change.

진공 유도 전기로에 펌프로 공기를 퍼내서 요구되는 희박이 생긴 후, 장입물을 용해하기 시작한다. 메탈은 완전히 녹고 영상 1630~1650도로 되는 온도까지 가열한 다음에 탈가스하고 필요한 미리 계산한 량의 망간, 페로바나듐, 페로니오브를용융 풀에 추가하고 그리고 나서 산화물 제거하는 물질인 페로규소, 페로티탄, 또는 알루미늄을 추가한다.After pumping air into the vacuum induction furnace, the required lean is produced, the charges begin to dissolve. The metal is completely melted, heated to a temperature of 1630-1650 degrees, degassed, ferrosilicon and ferrotitanium, which are added to the molten pool with the required precalculated amounts of manganese, ferrovanadium and ferroniob, and then oxide removed. , Or add aluminum.

녹은 강철을 + 1560 ~ +1580도로 되는 온도까지 가열시킨 후, 진공상태의 금속을 용융 도가니로부터 주조틀로 직접에 흘려보낸다. 그리고 나서 주조된 주괴를 진공상태가 아닌, 정상 압력하에서 주조틀내에서 냉각한다.After the molten steel is heated to a temperature of +1560 to +1580 degrees, the vacuum metal is poured directly from the melting crucible into the casting mold. The cast ingot is then cooled in a casting mold under normal pressure, not in vacuum.

이렇게 해서, 진공 유도 전기로에 12 시편 용해물을 만들었다. 모든 용해물에 대해서 금속의 화학 조성의 분석을 실시해서, 그 결과에 근거해서 등가 탄소 함량, 0.37을 가진 3개의 용해물을 선택했다... Thus, 12 specimen melts were made in a vacuum induction furnace. All the melts were analyzed for the chemical composition of the metal and based on the results, three melts with an equivalent carbon content of 0.37 were selected.

여기에는 등가 탄소 함유량은 아래와 같은 공식에 따라 계산했다. The equivalent carbon content was calculated according to the following formula.

표 2를 보면, 등가 탄소(Ceq)가 0.37인 이미 알려진 조성의 용해물과 비교해서 이들 용해물의 성질을 나타내고 있다. 결과를 보면 상술한 조성의 새로운 강철은, 50mm 횡단면에서 필요로 하는 강도 성질을 가지고 저온에서의 높은 연성을 가지는 것으로 나타나 있다. 제 1용해물, 제 2용해물, 제3용해물에 대한 니켈과 망간의 전체 함유량과 몰리브덴과 인의 농도사이의 비기 제각기 0.01; 0.0057; 0.0064가 된다는 것을 볼 수 있을 것이다. 이것은 0.03 보다 더 적은 숫자다.Table 2 shows the properties of these melts compared to the melts of known compositions with an equivalent carbon (C eq ) of 0.37. The results show that the new steel of the composition described above has the strength properties required in a 50 mm cross section and has high ductility at low temperatures. 0.01, respectively, between the total content of nickel and manganese and the concentration of molybdenum and phosphorus in the first, second and third lysates; 0.0057; You will see that it is 0.0064. This is less than 0.03.

표 1은 강철의 종래의 조성비와 비교해서 본 발명의 강철의 3 가지 용해물의 화학성분.Table 1 shows the chemical composition of the three melts of the steel of the present invention compared to the conventional composition ratio of steel.

성분ingredient 함유량 (중량, %)Content (weight,%) 제1용해물 First lysate 제2용해물Second lysate 제3용해물Third dissolved 종래 강철의 용해물 Melt of conventional steel 탄소carbon 0.020.02 0.040.04 0.090.09 0.060.06 망간manganese 1, 501, 50 1, 01, 0 , 3, 3 1, 41, 4 규소silicon 0.10.1 0.180.18 0.250.25 0.250.25 크롬chrome 0.050.05 0.280.28 0.20.2 0.150.15 니켈nickel 0.50.5 0.10.1 0.90.9 0.10.1 바나듐vanadium 0.10.1 0.050.05 0.010.01 0.070.07 니오브niobium 0.0320.032 0.060.06 0.0870.087 0.060.06 티탄titanium 0.010.01 0.0150.015 0.0350.035 0.0150.015 알루미늄aluminum 0.0120.012 0.0210.021 0.0280.028 0.0240.024 칼슘calcium 0.00050.0005 0.0030.003 0.0060.006 0.0050.005 유황brimstone 0.00350.0035 0.0040.004 0.0080.008 0.0030.003 인sign 0.0050.005 0.0070.007 0.0080.008 0.0050.005 질소nitrogen 0.0050.005 0.0060.006 0.0070.007 0.0070.007 구리Copper 0.230.23 0.10.1 0.010.01 0.150.15 안티모늄Antimonium 0.00030.0003 0.00090.0009 0.0040.004 0.0050.005 주석Remark 0.00050.0005 0.0050.005 0.0070.007 0.0050.005 비소arsenic 0.00020.0002 0.0040.004 0.0080.008 0.0060.006 몰리브덴molybdenum 0.00010.0001 0.350.35 0.50.5 -------------- 탄소등가Carbon equivalent 0.370.37 0.370.37 0.370.37 0.370.37 [(Ni + Mn )/1+Mo)]*P<0.03[(Ni + Mn) / 1 + Mo)] * P <0.03 0.010.01 0.00570.0057 0.00640.0064 --------------

표 2는 표 1의 용해물의 성질. Table 2 shows the properties of the melts in Table 1.

용해물Melt 횡단면, mmCross section, mm 파괴강도,H/mm2 Fracture Strength, H / mm 2 항복강도, H/mm2 Yield strength, H / mm 2 연성-취성 천이 온도, ℃ Ductile-brittle transition temperature, ℃ 1One 20/5020/50 836/687836/687 706/583706/583 -90/-100-90 / -100 22 20/5020/50 807/712807/712 683/600683/600 -90/-100-90 / -100 33 20/5020/50 767/675767/675 650/566650/566 -90/-100-90 / -100 종래 강철의 용해물 Melt of conventional steel 20/5020/50 621/528621/528 528/449528/449 -80/-30-80 / -30

Claims (1)

탄소, 망간, 규소, 크롬, 니켈, 바나듐, 니오브, 티탄, 알루미늄, 칼슘, 유황, 인, 질소, 구리, 안티몬, 주석, 비소, 또는 철을 포함한 강철에 있어서,In steels containing carbon, manganese, silicon, chromium, nickel, vanadium, niobium, titanium, aluminum, calcium, sulfur, phosphorus, nitrogen, copper, antimony, tin, arsenic, or iron, 아래 조성비(중량, %)와 같이 추가 몰리브덴의 함유량을 포함하며,Contains additional molybdenum content, such as the composition ratio (weight,%) below, 탄소 0.02-0.11Carbon 0.02-0.11 칼슘 0.0005-0.008Calcium 0.0005-0.008 망간 0.10-1, 8Manganese 0.10-1, 8 유황 0.0005-0.008Sulfur 0.0005-0.008 규소 0.06-0.6Silicon 0.06-0.6 인 0.001-0.012Phosphorus 0.001-0.012 크롬 0.005-0.30Chromium 0.005-0.30 질소 0.001-0.012Nitrogen 0.001-0.012 니켈 0.005-1, 0Nickel 0.005-1, 0 구리 0.005-0.25Copper 0.005-0.25 바나듐 0.01-0.12Vanadium 0.01-0.12 안티모늄 0.0001-0.005Antimonium 0.0001-0.005 니오브 0.02-0.10Niobium 0.02-0.10 주석 0.0001-0.007Tin 0.0001-0.007 티탄 0.01-0.04Titanium 0.01-0.04 비소 0.0001-0.008Arsenic 0.0001-0.008 알루미늄 0.01-0.05Aluminum 0.01-0.05 몰리브덴 0.0001-0.5Molybdenum 0.0001-0.5 철 나머지Iron rest
또한, 니켈과 망간의 전체 함유량은 아래 공식에 따라 몰리브덴과 인의 함유량과 관련되어 있는, In addition, the total content of nickel and manganese is related to the content of molybdenum and phosphorus according to the following formula, [(Ni + Mn )/1+Mo)]*P<0.03[(Ni + Mn) / 1 + Mo)] * P <0.03 것을 특징으로 하는 강철.Steel, characterized in that.
KR1020067014138A 2003-12-30 2004-08-06 Steel KR20070008543A (en)

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