CN109652744A - A kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding method - Google Patents

A kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding method Download PDF

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Publication number
CN109652744A
CN109652744A CN201910004261.3A CN201910004261A CN109652744A CN 109652744 A CN109652744 A CN 109652744A CN 201910004261 A CN201910004261 A CN 201910004261A CN 109652744 A CN109652744 A CN 109652744A
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Prior art keywords
welding
crack arrest
peculiar
heat input
vessel
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Pending
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CN201910004261.3A
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Chinese (zh)
Inventor
李松
王红鸿
汪晶洁
彭思远
吴君明
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Nanjing Iron and Steel Co Ltd
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Nanjing Iron and Steel Co Ltd
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Priority to CN201910004261.3A priority Critical patent/CN109652744A/en
Publication of CN109652744A publication Critical patent/CN109652744A/en
Priority to KR1020217022874A priority patent/KR20210107754A/en
Priority to PCT/CN2019/097828 priority patent/WO2020140427A1/en
Pending legal-status Critical Current

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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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/18—Submerged-arc welding
    • B23K9/186—Submerged-arc welding making use of a consumable electrodes
    • 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
    • C22C38/02—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
    • C22C38/18—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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Arc Welding In General (AREA)

Abstract

The invention discloses a kind of crack arrest steel E47 peculiar to vessel, are related to metallurgical technology field, and chemical component and mass percent are as follows: C≤0.12%, Mn≤2.0%, Si≤0.60%, S≤0.008%, P≤0.020%, Cr≤0.25%, Mo≤0.25%, Ni≤1.0%, Nb:0.02%~0.05%, V:0.05%~0.08%, surplus are Fe and impurity.Welding point of the invention can obtain good mechanical property and crack arrest characteristic, and can have the advantages that effectively improve the welding efficiency of crack arrest steel peculiar to vessel with the Performance Match of crack arrest steel.

Description

A kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding method
Technical field
The present invention relates to metallurgical technology fields, more particularly to a kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding side Method.
Background technique
With being continuously increased for marine Material Transportation amount, to pursue higher Shipping efficiency, container ship is to large size Change and large develops.The construction and operation one important challenge of bring of super-container vessel are exactly ultra-large type packaging Case ship builds the selection for using material.The enlargement of container ship is degrading the stress of Ship Structure, makes with big opening spy Property container ship there is only bucklings, there is also biggish torsional deflections, so that its structure is in complicated stress shape State increases the risk of structure safety.It is therefore desirable to which Ship Structure must strength and stiffness with higher.
Guarantee the safe and reliable of Ship Structure, the generation for preventing brittle fracture from destroying generally is adopted in hull structural design With two kinds of design methods: crack resistence design method and Crack Arrest Design method.Matrix steel plate has enough crack arrest characteristics, is super large The design and construction of type container ship provide technical support.
To meet high-intensitive EH40, EH47 crack arrest thick plate steel, good low-temperature flexibility and excellent welding performance, especially Low temperature crack arrest characteristic needs the alloying component of adjusting and optimizing steel plate, to obtain reasonable tissue morphology and ratio.This just needs to fill Divide the refinement crystal grain using Nb and the affecting laws to thermophysical property, using suitable cooling controlling and rolling controlling process.But simultaneously because The requirement of base material crack arrest characteristic is influenced using the impact flexibility sharp fall of plate joint after Large Heat Input Welding using peace Entirely, the welding of the steel of crack arrest both at home and abroad at present takes heat input input 20-25kJ/cm to be controlled.Do not have also at present appropriate Technological means had both met high efficiency welding, while having met welding point obdurability requirement.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of crack arrest steel E47 peculiar to vessel, which is characterized in that its chemistry at Divide and mass percent is as follows: C≤0.12%, Mn≤2.0%, Si≤0.60%, S≤0.008%, P≤0.020%, Cr≤ 0.25%, Mo≤0.25%, Ni≤1.0%, Nb:0.02%~0.05%, V:0.05%~0.08%, surplus are Fe and miscellaneous Matter.
Technical effect: welding point of the invention can obtain good mechanical property and crack arrest characteristic, can be with crack arrest steel Performance Match, and have the advantages that effectively improve the welding efficiency of crack arrest steel peculiar to vessel.
The technical solution that the present invention further limits is:
Further, chemical component and mass percent are as follows: C:0.06%, Mn:1.6%, Si:0.16%, S: 0.001%, P:0.005%, Cr:0.19%, Mo:0.03%, Ni:0.93%, Nb:0.04%, V:0.05%~0.08%, Cu:0.28%, surplus are Fe and impurity.
Another object of the present invention is to provide a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, applicable base material is Crack arrest steel E47 peculiar to vessel, weld preheating temperature are 120 DEG C, and temperature is 100~200 DEG C between road, are carried out at back chipping before reverse side welding Reason；Using double wire hidden arc welding, preceding silk thread energy is 23~25kJ/cm, and rear silk thread energy is 25~28kJ/cm, Double Wire Welding wiring Energy is 48~53kJ/cm.
A kind of preceding crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, be applicable in base material with a thickness of 80~90mm.
A kind of preceding crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, groove type are single side asymmetry K-type slope Mouthful, upper bevel angle is 40~45 °, and lower bevel angle is 45~50 °, and blunt edge size is 5~6mm.
A kind of preceding crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, gage of wire used are 4mm.
A kind of preceding crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, welded mother metal thickness are 80mm, state of supplying For TMCP, -10 DEG C, CTOD > 0.45mm；Using double wire hidden arc welding, groove type uses K-type groove, and upper bevel angle is 40 °, Lower bevel angle is 50 °, root face 5mm；Welding material is Olympic health OE-SD3 1Ni1/4Mo welding wire for submerged-arc welding+OP 121TT/W Solder flux combination, the diameter of welding wire for submerged-arc welding are 4mm；Weld preheating temperature is 120 DEG C, and temperature is 100~150 DEG C between road.
A kind of preceding crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, welded mother metal thickness are 90mm, state of supplying For TMCP, -10 DEG C, CTOD > 0.45mm；Using double wire hidden arc welding, groove type uses K-type groove, and upper bevel angle is 45 °, Lower bevel angle is 55 °, root face 6mm；Welding material is Olympic health OE-SD3 1Ni1/4Mo welding wire for submerged-arc welding+OP 121TT/W Solder flux combination, the diameter of welding wire for submerged-arc welding are 4mm；Weld preheating temperature is 120 DEG C, and temperature is 150~200 DEG C between road.
The beneficial effects of the present invention are:
(1) the crack arrest steel E47 peculiar to vessel of present invention welding 80~90mm thickness, weld heat input reach 53kJ, and welding efficiency obviously mentions Height, strength of welded joint reach 595~623MPa, and -40 DEG C of impact values reach 107~332J, -10 DEG C of CTOD >=0.25mm；
(2) crack arrest steel E47 peculiar to vessel of the invention, mechanical property are as follows: yield strength >=460MPa, tensile strength is 570~ 720MPa, the average value of -40 DEG C of impacts are >=64J (transverse direction), and CTOD value is -10 DEG C: 0.25mm；
(3) tensile strength of deposited metal of the present invention is 630MPa, and yield strength 520MPa, -40 DEG C of impacts are 150J；
(4) welding point that welding procedure of the present invention obtains can reach the service performance to match with base material, effectively improve The welding efficiency of crack arrest steel peculiar to vessel, the advantages of obtaining good welding joint mechanical property and crack arrest characteristic.
Detailed description of the invention
Fig. 1 is welding groove schematic diagram.
Specific embodiment
Embodiment 1
The welded base material of this implementation is E47BCA marine worker crack arrest plate, and with a thickness of 80mm, supply of material state is TMCP, chemical component and power It learns performance and is shown in Table 1-1 and table 1-2, -10 DEG C of CTOD > 0.45mm respectively.
The chemical component (Wt%) of table 1-1 steel plate
The mechanical property of table 1-2 steel plate
Using double wire hidden arc welding method, groove type uses K-type groove, and upper bevel angle is 40 °, and lower bevel angle is 50 °, blunt While being 5mm.Welding material are as follows: the combination of Olympic health OE-SD3 1Ni1/4Mo welding wire for submerged-arc welding+OP 121TT/W solder flux, welding wire for submerged-arc welding Diameter be Φ 4mm, preceding silk and rear silk be congruent melting pond heat input be added as a result, specific welding procedure is shown in Table 1-3.
Table 1-3 double wire hidden arc welding welding condition
After the completion of welding, welding joint mechanical property is shown in Table 1-4 and 1-5, -10 DEG C of CTOD > 0.30mm.
Table 1-4 welding point stretch test result
Table 1-5 welding point Impulse Test Result
Embodiment 2
The welded base material of the present embodiment is E47BCA marine worker crack arrest plate, and with a thickness of 90mm, supply of material state is TMCP, chemical component and Mechanical property is shown in Table 2-1 and table 2-2, -10 DEG C of CTOD > 0.45mm respectively.
The chemical component (Wt%) of table 2-1 steel plate
The mechanical property of table 2-2 steel plate
Using double wire hidden arc welding method, groove type uses K-type groove, and upper bevel angle is 45 °, and lower bevel angle is 55 °, blunt While being 6mm.Welding material are as follows: the combination of Olympic health OE-SD3 1Ni1/4Mo welding wire for submerged-arc welding+OP 121TT/W solder flux, welding wire for submerged-arc welding Diameter be Φ 4mm, preceding silk and rear silk be congruent melting pond heat input be added as a result, specific welding procedure is shown in Table 2-3.
Table 2-3 double wire hidden arc welding welding condition
After the completion of welding, welding joint mechanical property is shown in Table 2-4 and 2-5, -10 DEG C of CTOD > 0.32mm.
Table 2-4 welding point stretch test result
Table 2-5 welding point Impulse Test Result
Using double wire hidden arc welding technology of the invention, the crack arrest steel E47 peculiar to vessel of 80~90mm thickness is welded, weld heat input reaches 53kJ/cm, welding efficiency significantly improve, and the intensity of welding point reaches 595~623MPa, and -40 DEG C of impact values reach 107~ 332J, -10 DEG C of CTOD > 0.30mm can reach the service performance to match with base material E47, effectively improve crack arrest steel peculiar to vessel The advantages of welding efficiency of E47, good welding joint mechanical property and crack arrest characteristic.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape At technical solution, fall within the scope of protection required by the present invention.

Claims (8)

1. a kind of crack arrest steel E47 peculiar to vessel, which is characterized in that its chemical component and mass percent are as follows: C≤0.12%, Mn≤ 2.0%, Si≤0.60%, S≤0.008%, P≤0.020%, Cr≤0.25%, Mo≤0.25%, Ni≤1.0%, Nb:0.02%~ 0.05%, V:0.05%~0.08%, surplus are Fe and impurity.
2. a kind of crack arrest steel E47 peculiar to vessel according to claim 1, which is characterized in that its chemical component and mass percent It is as follows: C:0.06%, Mn:1.6%, Si:0.16%, S:0.001%, P:0.005%, Cr:0.19%, Mo:0.03%, Ni:0.93%, Nb:0.04%, V:0.05%~0.08%, Cu:0.28%, surplus are Fe and impurity.
3. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel, it is characterised in that:
Being applicable in base material is crack arrest steel E47 peculiar to vessel, and weld preheating temperature is 120 DEG C, and temperature is 100~200 DEG C between road, reverse side weldering Back chipping processing is carried out before connecing；Using double wire hidden arc welding, preceding silk thread energy is 23~25kJ/cm, and rear silk thread energy is 25~28kJ/ Cm, double wire welding heat input are 48~53kJ/cm.
4. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel according to claim 3, it is characterised in that: be applicable in mother Material with a thickness of 80~90mm.
5. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel according to claim 3, it is characterised in that: groove shape Formula be single side asymmetry K-type groove, upper bevel angle be 40~45 °, lower bevel angle be 45~50 °, blunt edge size be 5~ 6mm。
6. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel according to claim 3, it is characterised in that: weldering used Silk diameter is 4mm.
7. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel according to claim 3, it is characterised in that: weld mother For material with a thickness of 80mm, supply of material state is TMCP, -10 DEG C, CTOD > 0.45mm；Using double wire hidden arc welding, groove type uses K-type Groove, upper bevel angle are 40 °, and lower bevel angle is 50 °, root face 5mm；Welding material is Olympic health OE-SD3 1Ni1/ The combination of 121 TT/W solder flux of 4Mo welding wire for submerged-arc welding+OP, the diameter of welding wire for submerged-arc welding are 4mm；Weld preheating temperature is 120 DEG C, between road Temperature is 100~150 DEG C.
8. a kind of crack arrest steel E47 Large Heat Input Welding method peculiar to vessel according to claim 3, it is characterised in that: weld mother For material with a thickness of 90mm, supply of material state is TMCP, -10 DEG C, CTOD > 0.45mm；Using double wire hidden arc welding, groove type uses K-type Groove, upper bevel angle are 45 °, and lower bevel angle is 55 °, root face 6mm；Welding material is Olympic health OE-SD3 1Ni1/ The combination of 121 TT/W solder flux of 4Mo welding wire for submerged-arc welding+OP, the diameter of welding wire for submerged-arc welding are 4mm；Weld preheating temperature is 120 DEG C, between road Temperature is 150~200 DEG C.
CN201910004261.3A 2019-01-03 2019-01-03 A kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding method Pending CN109652744A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201910004261.3A CN109652744A (en) 2019-01-03 2019-01-03 A kind of crack arrest steel E47 peculiar to vessel and its Large Heat Input Welding method
KR1020217022874A KR20210107754A (en) 2019-01-03 2019-07-26 Crack-reducing steel E47 for ships and its high heat input welding method
PCT/CN2019/097828 WO2020140427A1 (en) 2019-01-03 2019-07-26 Crack arrest steel e47 for ships and large line energy welding method therefor

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Cited By (2)

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WO2020140427A1 (en) * 2019-01-03 2020-07-09 南京钢铁股份有限公司 Crack arrest steel e47 for ships and large line energy welding method therefor
CN113814531A (en) * 2021-10-27 2021-12-21 张家港荣盛特钢有限公司 Welding joint and welding method of crack arrest steel for ship

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Publication number Priority date Publication date Assignee Title
CN113814536A (en) * 2021-09-22 2021-12-21 包头钢铁（集团）有限责任公司 Novel Q345qENH high-performance weathering steel submerged-arc welding method for bridge

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CN104475941A (en) * 2014-12-03 2015-04-01 宝鸡石油钢管有限责任公司 Multiple-wire submerged arc welding process suitable for thick-wall straight-seam steel pipes X70

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CN104475941A (en) * 2014-12-03 2015-04-01 宝鸡石油钢管有限责任公司 Multiple-wire submerged arc welding process suitable for thick-wall straight-seam steel pipes X70

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Publication number Priority date Publication date Assignee Title
WO2020140427A1 (en) * 2019-01-03 2020-07-09 南京钢铁股份有限公司 Crack arrest steel e47 for ships and large line energy welding method therefor
CN113814531A (en) * 2021-10-27 2021-12-21 张家港荣盛特钢有限公司 Welding joint and welding method of crack arrest steel for ship

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