CN105986190A - High-strength high-toughness pipe for crane jib and manufacturing method thereof - Google Patents
High-strength high-toughness pipe for crane jib and manufacturing method thereof Download PDFInfo
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- CN105986190A CN105986190A CN201510087549.3A CN201510087549A CN105986190A CN 105986190 A CN105986190 A CN 105986190A CN 201510087549 A CN201510087549 A CN 201510087549A CN 105986190 A CN105986190 A CN 105986190A
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 10
- 238000005496 tempering Methods 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 230000007547 defect Effects 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000003723 Smelting Methods 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 238000009749 continuous casting Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 5
- 229910001200 Ferrotitanium Inorganic materials 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000009864 tensile test Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229910000617 Mangalloy Inorganic materials 0.000 description 1
- QFGIVKNKFPCKAW-UHFFFAOYSA-N [Mn].[C] Chemical compound [Mn].[C] QFGIVKNKFPCKAW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The invention provides a high-strength high-toughness crane jib tube, which comprises the following components in percentage by mass: 0.14-0.18% of C, 0.30-0.50% of Si, 1.30-1.50% of Mn, less than or equal to 0.015% of P, less than or equal to 0.008% of S, 0.35-0.50% of Cr0.10-0.20% of Ni0.10, 0.25-0.38% of Mo0.25, 0.07-0.12% of V, less than or equal to 0.05% of Ti, 0.30-0.45% of W, 0.02-0.05% of Al, less than or equal to 0.02% of Cu, less than or equal to 0.05% of Nb, less than or equal to 0.007% of. Adding ferrotitanium 5-8 min before the end of the external refining. Heating the tube blank at 1260-1280 ℃; the quenching temperature of the steel pipe is 920-930 ℃, the tempering temperature is 690-700 ℃, and the heat preservation time is 40-60 min. The process is simple and easy to realize, the welding judgment is carried out on the arm support pipe according to the technical requirements of the assessment of welding process of pressure-bearing equipment of standard NB/T47014-2011, the bending tests such as room temperature tensile test, lateral bending test, surface bending test, back bending test and the like and the low-temperature impact at the temperature of minus 40 ℃ are all qualified, and the product performance is uniform and the stability is good.
Description
Technical field
The invention belongs to metallurgical technology technical field, particularly to a kind of high-intensity high-tenacity crane arm support seamless steel pipe and
Manufacture method.
Background technology
Lifting industry is one of basic industries important in the development of the national economy.Hydraulic crawler crane is that a kind of skyscraper is executed
The mobile crane of work, is with high content of technology in engineering machinery, and manufacturing process is complicated, the hoisting operation of unique energy
Machinery, it is relatively large that it has elevating capacity, and radius of turn is little, and overline capable of hoisting is walked, and crawler belt is less, to environmental requirement than pressure to ground
Low, job stabilization is good, truss combination can the feature such as free replacing, thus be widely used in building bridge, install generating equipment,
Refining equipment is installed, sets up wind power generating set and build the projects under construction such as offshore work platform.Crawler crane boom has been
The critical component of heavy-duty machine, its use condition requires seamless steel pipe high intensity to be had and high tenacity, requires have well simultaneously
Welding performance.In recent years, along with the reinforcement of China's infrastructure construction, especially Three Gorges Projects, Qinghai-Tibet Railway, transfering natural gas from the west to the east,
Under the pulling that the industries such as transferring electricity from the west to the east develop rapidly, domestic crawler crane is commercially available continue, quickly grow.At present, I
The domestic only Baosteel of state's crane arm support high tensile steel tube, climb into several the steel tube factories such as steel, Hengyang steel pipe and can produce.
Industrially-advanced country the most progressively uses such as ASTMA514 series, DIN STE series, WEL TEN series to be generation in the world
The high-strength welding structure steel making crawler crane boom of table.These steel grades be all add on the basis of low carbon manganese steel appropriate Cr,
The microalloy elements such as Ni, Mo, V, Nb, Ti form.It is domestic that once someone used the Cr-Ni-Mn-Mo-V-B with good low-carbon (LC)
High intensity jib pipe manufactured experimently by steel alloy, but batch does not puts into production and uses.
Summary of the invention
The purpose of the present invention aims to provide a kind of seamless steel of crane arm support with high intensity, high tenacity and good welds performance
Pipe and manufacture method thereof.
To this end, the solution that the present invention is taked is:
A kind of high-strength and high-ductility crane gib arm rack pipe, its chemical composition mass percentage content is:
C 0.14~0.18%, Si 0.30~0.50%, Mn 1.30~1.50%, P≤0.015%, S≤0.008%, Cr 0.35~
0.50%, Ni 0.10~0.20%, Mo 0.25~0.38%, V 0.07~0.12%, Ti≤0.05%, W 0.30~0.45%,
Al 0.02~0.05%, Cu≤0.02%, Nb≤0.05%, N≤0.007%, Yu Weitie and impurity.
A kind of manufacture method of high-strength and high-ductility crane gib arm rack pipe, it is characterised in that:
(1) process route
Use molten iron pretreatment → converter smelting → LF+VD external refining → continuous casting and rolling → hot rolling → heat treatment → defects detecting technology.
(2) external refining
Refine terminates front 5~8min interpolation ferrotianiums.
(3) hot rolling technology
Heating of pipe blank temperature 1260~1280 DEG C;Tandem rolling selects surface zero defect mandrel rolling, and uses graphite lubrication;Sizing makes
Use high-pressure water descaling.
(4) Technology for Heating Processing
Hardening and tempering process: hardening heat 920~930 DEG C, makes the abundant austenitizing of steel pipe, and shrend ensures steel pipe rotary wheel centrage water
Flat;Temperature 690~700 DEG C, temperature retention time 40~60min.
The invention have the benefit that
1, present invention process is reasonable, and steel is pure, field trash is few, and steel pipe physical dimension is good, stable performance.
2, the product of the present invention requires to weld according to standard NB/T47014-2011 " bearing device qualification of welding procedure " technology
Judging, result shows, after weld formation, the inspection of its room temperature tensile is qualified for steel pipe, and lateral bending, face is curved, it is qualified to carry on the back the bend test such as curved,
-40 DEG C of low-temperature impacts are qualified.
3, the manufacturing process of product of the present invention is simple, it is easy to accomplish, the jib pipe microscopic structure after heat treatment is tempered sorbite,
Properties of product uniformity is good.
Accompanying drawing explanation
Fig. 1 is the crane arm support pipe micro-organization chart after heat treatment.
Detailed description of the invention
Embodiment 1:
High-strength and high-ductility crane gib arm rack pipe chemical composition mass percentage content is:
C 0.15%, Si0.50%, Mn 1.40%, P 0.010%, S 0.008%, Cr 0.46%, Ni 0.13%, Mo 0.34%,
V 0.08%, Ti≤0.05%, W 0.40%, Al 0.042%, Cu≤0.02%, Nb≤0.05%, N≤0.007%, Yu Weitie and
Impurity.
Process route: employing molten iron pretreatment → converter smelting → LF+VD external refining → continuous casting and rolling → hot rolling → heat treatment →
Defects detecting technology.
External refining: refine terminates front 6min and adds ferrotianium.
Hot rolling technology: heating of pipe blank temperature 1265 DEG C;Tandem rolling selects surface zero defect mandrel rolling, and uses graphite lubrication;Fixed
Footpath uses high-pressure water descaling.
Technology for Heating Processing: modifier treatment: hardening heat 930 DEG C, makes the abundant austenitizing of steel pipe, and shrend ensures steel pipe rotary wheel
Centrage level;Temperature 698 DEG C, temperature retention time 50min.
Embodiment 2:
High-strength and high-ductility crane gib arm rack pipe, its chemical composition mass percentage content is:
C 0.17%, Si 0.35%, Mn 1.30%, P 0.013%, S 0.005%, Cr 0.40%, Ni 0.20%, Mo 0.28%,
V 0.12%, Ti≤0.05%, W 0.34%, Al 0.03%, Cu≤0.02%, Nb≤0.05%, N≤0.007%, Yu Weitie and
Impurity.
Process route: employing molten iron pretreatment → converter smelting → LF+VD external refining → continuous casting and rolling → hot rolling → heat treatment →
Defects detecting technology.
External refining: refine terminates front 8min and adds ferrotianium.
Hot rolling technology: heating of pipe blank temperature 1275 DEG C;Tandem rolling selects surface zero defect mandrel rolling, and uses graphite lubrication;Fixed
Footpath uses high-pressure water descaling.
Technology for Heating Processing: modifier treatment: hardening heat 925 DEG C, makes the abundant austenitizing of steel pipe, and shrend ensures steel pipe rotary wheel
Centrage level;Temperature 693 DEG C, temperature retention time 60min.
Claims (2)
1. a high-strength and high-ductility crane gib arm rack pipe, it is characterised in that its chemical composition mass percent
Content is:
C 0.14~0.18%, Si 0.30~0.50%, Mn 1.30~1.50%, P≤0.015%, S≤0.008%,
Cr 0.35~0.50%, Ni 0.10~0.20%, Mo 0.25~0.38%, V 0.07~0.12%, Ti≤0.05%,
W 0.30~0.45%, Al 0.02~0.05%, Cu≤0.02%, Nb≤0.05%, N≤0.007%, Yu Wei
Ferrum and impurity.
2. a manufacture method for high-strength and high-ductility crane gib arm rack pipe as claimed in claim 1, its feature
It is:
(1) process route
Use molten iron pretreatment → converter smelting → LF+VD external refining → continuous casting and rolling → hot rolling → heat treatment
→ defects detecting technology;
(2) external refining
Refine terminates front 5~8min interpolation ferrotianiums;
(3) hot rolling technology
Heating of pipe blank temperature 1260~1280 DEG C;Tandem rolling selects surface zero defect mandrel rolling, and uses stone
Ink lubrication;Sizing uses high-pressure water descaling;
(4) Technology for Heating Processing
Hardening and tempering process: hardening heat 920~930 DEG C, makes the abundant austenitizing of steel pipe, and shrend ensures steel
Pipe rotates wheel centrage level;Temperature 690~700 DEG C, temperature retention time 40~60min.
Priority Applications (1)
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CN201510087549.3A CN105986190A (en) | 2015-02-25 | 2015-02-25 | High-strength high-toughness pipe for crane jib and manufacturing method thereof |
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CN201510087549.3A CN105986190A (en) | 2015-02-25 | 2015-02-25 | High-strength high-toughness pipe for crane jib and manufacturing method thereof |
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Publication Number | Publication Date |
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CN105986190A true CN105986190A (en) | 2016-10-05 |
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CN201510087549.3A Pending CN105986190A (en) | 2015-02-25 | 2015-02-25 | High-strength high-toughness pipe for crane jib and manufacturing method thereof |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106566986A (en) * | 2016-11-10 | 2017-04-19 | 武汉钢铁股份有限公司 | High surface quality hot rolled steel plate used for manufacturing swing arm of excavator, and manufacturing method thereof |
CN106702270A (en) * | 2016-11-10 | 2017-05-24 | 武汉钢铁股份有限公司 | Thick-specification high-surface-quality hot-rolling and straightening steel sheet and manufacturing method thereof |
CN110157985A (en) * | 2019-05-31 | 2019-08-23 | 张家港华程机车精密制管有限公司 | Steel plate for crawler crane string abdomen arm and hot hardening and tempering process that it is carried out |
CN113151635A (en) * | 2021-03-30 | 2021-07-23 | 江苏永钢集团有限公司 | Production process of steel pipe for crane boom |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1218559B1 (en) * | 1999-08-30 | 2003-05-21 | V & M Deutschland GmbH | Use of a steel alloy for producing high-tensile seamless steel tubes |
JP2008013808A (en) * | 2006-07-05 | 2008-01-24 | Jfe Steel Kk | High-tensile-strength welded steel pipe for automotive structural member, and manufacturing method therefor |
CN101177761A (en) * | 2007-12-03 | 2008-05-14 | 衡阳华菱钢管有限公司 | Crane gib arm rack pipe and manufacturing method |
JP2008266780A (en) * | 2007-03-29 | 2008-11-06 | Jfe Steel Kk | High tensile strength product excellent in resistance to delayed fracture and process for production of the same |
CN101503781A (en) * | 2008-10-24 | 2009-08-12 | 衡阳华菱连轧管有限公司 | Pipe for crane boom and manufacturing method thereof |
CN101775537A (en) * | 2010-03-06 | 2010-07-14 | 衡阳华菱钢管有限公司 | Microalloy high tenacity no-tempering crane jib tube and production method |
CN102703836A (en) * | 2012-05-21 | 2012-10-03 | 鞍钢股份有限公司 | Manufacturing method of seamless steel tube for low temperature |
JP2012211360A (en) * | 2011-03-31 | 2012-11-01 | Jfe Steel Corp | High-strength steel having excellent toughness of weld heat-affected zone and uniform elongation, and method of manufacturing the same |
-
2015
- 2015-02-25 CN CN201510087549.3A patent/CN105986190A/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1218559B1 (en) * | 1999-08-30 | 2003-05-21 | V & M Deutschland GmbH | Use of a steel alloy for producing high-tensile seamless steel tubes |
JP2008013808A (en) * | 2006-07-05 | 2008-01-24 | Jfe Steel Kk | High-tensile-strength welded steel pipe for automotive structural member, and manufacturing method therefor |
JP2008266780A (en) * | 2007-03-29 | 2008-11-06 | Jfe Steel Kk | High tensile strength product excellent in resistance to delayed fracture and process for production of the same |
CN101177761A (en) * | 2007-12-03 | 2008-05-14 | 衡阳华菱钢管有限公司 | Crane gib arm rack pipe and manufacturing method |
CN101503781A (en) * | 2008-10-24 | 2009-08-12 | 衡阳华菱连轧管有限公司 | Pipe for crane boom and manufacturing method thereof |
CN101775537A (en) * | 2010-03-06 | 2010-07-14 | 衡阳华菱钢管有限公司 | Microalloy high tenacity no-tempering crane jib tube and production method |
JP2012211360A (en) * | 2011-03-31 | 2012-11-01 | Jfe Steel Corp | High-strength steel having excellent toughness of weld heat-affected zone and uniform elongation, and method of manufacturing the same |
CN102703836A (en) * | 2012-05-21 | 2012-10-03 | 鞍钢股份有限公司 | Manufacturing method of seamless steel tube for low temperature |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106566986A (en) * | 2016-11-10 | 2017-04-19 | 武汉钢铁股份有限公司 | High surface quality hot rolled steel plate used for manufacturing swing arm of excavator, and manufacturing method thereof |
CN106702270A (en) * | 2016-11-10 | 2017-05-24 | 武汉钢铁股份有限公司 | Thick-specification high-surface-quality hot-rolling and straightening steel sheet and manufacturing method thereof |
CN106702270B (en) * | 2016-11-10 | 2018-05-08 | 武汉钢铁有限公司 | Think gauge great surface quality hot rolling opening plate and its manufacture method |
CN110157985A (en) * | 2019-05-31 | 2019-08-23 | 张家港华程机车精密制管有限公司 | Steel plate for crawler crane string abdomen arm and hot hardening and tempering process that it is carried out |
CN113151635A (en) * | 2021-03-30 | 2021-07-23 | 江苏永钢集团有限公司 | Production process of steel pipe for crane boom |
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