CN108300942A - A kind of hull keel steel pipe - Google Patents

A kind of hull keel steel pipe Download PDF

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Publication number
CN108300942A
CN108300942A CN201810115215.6A CN201810115215A CN108300942A CN 108300942 A CN108300942 A CN 108300942A CN 201810115215 A CN201810115215 A CN 201810115215A CN 108300942 A CN108300942 A CN 108300942A
Authority
CN
China
Prior art keywords
steel pipe
less
hull keel
present
keel steel
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
Application number
CN201810115215.6A
Other languages
Chinese (zh)
Inventor
查俊
强林汉
陆青松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Wan Nan Shipbuilding Co Ltd
Original Assignee
Wuhu Wan Nan Shipbuilding Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhu Wan Nan Shipbuilding Co Ltd filed Critical Wuhu Wan Nan Shipbuilding Co Ltd
Priority to CN201810115215.6A priority Critical patent/CN108300942A/en
Publication of CN108300942A publication Critical patent/CN108300942A/en
Pending legal-status Critical Current

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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
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The present invention relates to a kind of hull keel steel pipes, belong to ship technical field, the steel pipe is formed with following compositions, described at being grouped as in terms of quality %, contains C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.10~0.15%, N：0.010% or less, Nb：0.003% less than 0.070%, and surplus is made of Fe and inevitable impurity, and the present invention is corrosion-resistant, and bending strength is maintained at 1400MPa or more.

Description

A kind of hull keel steel pipe
Technical field
The present invention relates to a kind of hull keel steel pipes, belong to ship technical field.
Background technology
In existing hull keel, (standard size is outer straight to the steel pipe for the use of bending strength being mostly 1400MPa or more Diameter 50mm, interior diameter 42mm, wall thickness 4mm) it is welded, however these steel pipes are particularly easy to get rusty, and are fully immersed in south In the seawater pond (100L, tube quality 0.5kg, and steel pipe does not do any safeguard procedures) that sea is fetched, quality mitigates 0.5% Time is only in 30min, it is difficult to meet the requirements.
Invention content
(1) the technical issues of solving
The present invention provides a kind of corrosion-resistant, and bending strength is maintained at the steel pipe of 1400MPa or more.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：A kind of hull keel steel pipe, it is special Sign is that the steel pipe is formed with following compositions, described at being grouped as in terms of quality %, contains C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.10~0.15%, N：0.010% or less, Nb：0.003% less than 0.070%, surplus is made of Fe and inevitable impurity.
Preferably, the content of the Al is 0.13%.
(3) advantageous effect
The present invention provides a kind of corrosion-resistant, and bending strength is maintained at the steel pipe of 1400MPa or more.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below.
Embodiment one
The present invention provides a kind of technical solution：A kind of hull keel steel pipe, which is characterized in that the steel pipe has following It is described at being grouped as in terms of quality % at being grouped as, contain C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S： 0.020%, Al：0.10%, N：0.010% or less, Nb：0.003% less than 0.070%, and surplus is by Fe and can not keep away The impurity exempted from is constituted.
Steel pipe bending strength made from the present embodiment is 1437MPa, and under the experimental situation that background technology proposes, the time is 43min。
Embodiment two
A kind of hull keel steel pipe, which is characterized in that the steel pipe with following compositions form, it is described at be grouped as with Quality % meters, contain C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.12%, N：0.010% Below, Nb：0.003% less than 0.070%, and surplus is made of Fe and inevitable impurity.
Steel pipe bending strength made from the present embodiment is 1477MPa, and under the experimental situation that background technology proposes, the time is 47min。
Embodiment three
A kind of hull keel steel pipe, which is characterized in that the steel pipe with following compositions form, it is described at be grouped as with Quality % meters, contain C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.13%, N：0.010% Below, Nb：0.003% less than 0.070%, and surplus is made of Fe and inevitable impurity.
Steel pipe bending strength made from the present embodiment is 1562MPa, and under the experimental situation that background technology proposes, the time is 54min。
Example IV
A kind of hull keel steel pipe, which is characterized in that the steel pipe with following compositions form, it is described at be grouped as with Quality % meters, contain C：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.15%, N：0.010% Below, Nb：0.003% less than 0.070%, and surplus is made of Fe and inevitable impurity.
Steel pipe bending strength made from the present embodiment is 1417MPa, and under the experimental situation that background technology proposes, the time is 41min。
Therefore, when the content of Al is 0.13%, steel pipe bending strength of the invention is higher, and proposed in background technology Under experimental situation, time 54min is also longer.

Claims (2)

1. a kind of hull keel steel pipe, which is characterized in that the steel pipe is formed with following compositions, described at being grouped as with matter % meters are measured, C is contained：0.04%, Si：0.4%, Mn：1.0%, P：0.3%, S：0.020%, Al：0.10~0.15%, N： 0.010% or less, Nb：0.003% less than 0.070%, and surplus is made of Fe and inevitable impurity.
2. hull keel steel pipe according to claim 1, which is characterized in that the content of the Al is 0.13%.
CN201810115215.6A 2018-02-06 2018-02-06 A kind of hull keel steel pipe Pending CN108300942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810115215.6A CN108300942A (en) 2018-02-06 2018-02-06 A kind of hull keel steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810115215.6A CN108300942A (en) 2018-02-06 2018-02-06 A kind of hull keel steel pipe

Publications (1)

Publication Number Publication Date
CN108300942A true CN108300942A (en) 2018-07-20

Family

ID=62863995

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810115215.6A Pending CN108300942A (en) 2018-02-06 2018-02-06 A kind of hull keel steel pipe

Country Status (1)

Country Link
CN (1) CN108300942A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003313637A (en) * 2002-02-19 2003-11-06 Nippon Steel Corp High-strength steel sheet having fine structure superior in formability, plating property and toughness, and manufacturing method therefor
JP2008163388A (en) * 2006-12-28 2008-07-17 Nippon Steel Corp Hot dip galvannealed steel sheet having excellent surface appearance and plating adhesion
EP1997921A2 (en) * 2007-06-01 2008-12-03 Mahle International GmbH Gasket

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003313637A (en) * 2002-02-19 2003-11-06 Nippon Steel Corp High-strength steel sheet having fine structure superior in formability, plating property and toughness, and manufacturing method therefor
JP2008163388A (en) * 2006-12-28 2008-07-17 Nippon Steel Corp Hot dip galvannealed steel sheet having excellent surface appearance and plating adhesion
EP1997921A2 (en) * 2007-06-01 2008-12-03 Mahle International GmbH Gasket

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Legal Events

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PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180720