CN108342652A - A kind of hot rolling sky iron track shaped steel - Google Patents

A kind of hot rolling sky iron track shaped steel Download PDF

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Publication number
CN108342652A
CN108342652A CN201810468275.6A CN201810468275A CN108342652A CN 108342652 A CN108342652 A CN 108342652A CN 201810468275 A CN201810468275 A CN 201810468275A CN 108342652 A CN108342652 A CN 108342652A
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shaped steel
hot rolling
sky iron
track shaped
steel
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Inventor
王华军
贺伟明
吴剑峰
唐通
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Mid Tang Air Iron Technology Co Ltd
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Mid Tang Air Iron Technology Co Ltd
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Priority to CN201810468275.6A priority Critical patent/CN108342652A/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
    • C22C38/02—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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • C22C38/18—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
    • 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
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • 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

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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)

Abstract

The invention discloses a kind of hot rolling sky iron track shaped steel, the cross section hot rolling of sky iron track shaped steel is T shapes, and the weight percent of each component is as follows：C：0.1 0.2%；Si：0.4 0.6%；Mn：1.2 1.6%；P：0.015 0.03%；S：0.01 0.03%；V：0.08 0.11%；Cr：0.15 0.22%；Ni：0.3 0.45%；Cu：0.15 0.25%；Ti：0.05 0.06%；Nb：0.04 0.05%；Mo：0.04 0.05%；N：0.01 0.012%；Als：0.015 0.02%；Ceq：0.4 0.44%；Remaining is Fe.The erection cost of overhead rail can be also effectively reduced using this shaped steel, and there is ideal corrosion resistance.

Description

A kind of hot rolling sky iron track shaped steel
Technical field
The present invention relates to technical field of metal material, more particularly to a kind of hot rolling sky iron track shaped steel.
Background technology
Empty iron is suspended from a kind of rail vehicle run on overhead rail, as a kind of light-duty, middling speed, middle freight volume it is new Type public transport mode, be integration, multi-mode, three-dimensional public transport system necessary component.
China is vast in territory, and the environmental factor of diverse geographic location differs greatly, therefore is directed to the empty iron Track desigh in China, To ensure that overhead rail has reliable bearing capacity in certain time limit, the wearability for considering empty iron rail material and resistance to is needed Corrosive nature etc..In the prior art, the area good for some weather conditions, ambient humidity is little, material exposed to the atmosphere Material is not easily susceptible to corrode, it is contemplated that non-weather-proof steel material can be used in the material cost problem of overhead rail, is using non-weatherability When the steel of material, it is desirable that the more common Q345B of its corrosion resistance is suitable.
It is proposed that a kind of the cost of material is low, facilitates that overhead rail is mated formation and mechanical property and service life meet empty iron and sets Desired metal material is counted, is those skilled in the art's technical problem urgently to be resolved hurrily in China's sky iron technology evolution.
Invention content
For proposition set forth above, a kind of the cost of material is low, overhead rail is facilitated to mat formation and mechanical property and use Service life meets the metal material of empty iron design requirement, is in China's sky iron technology evolution, those skilled in the art institute is urgently The technical issues of solving the problems, such as, the present invention provides a kind of hot rolling sky iron track shaped steel, the mechanical property of this shaped steel meets Empty rail road is required with steel, while the erection cost of overhead rail can be also effectively reduced using this shaped steel, in some weather conditions Area good, ambient humidity is little has ideal corrosion resistance.
The technological means of this programme is as follows, a kind of hot rolling sky iron track shaped steel, the cross section of the sky iron track shaped steel Hot rolling is T shapes, and the weight percent of sky iron track shaped steel its each component is as follows：
C：0.1-0.2%；
Si：0.4-0.6%；
Mn：1.2-1.6%；
P：0.015-0.03%；
S：0.01-0.03%；
V：0.08-0.11%；
Cr：0.15-0.22%；
Ni：0.3-0.45%；
Cu：0.15-0.25%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.44%；
Wherein, Ceq=C+Mn/6+ (Cr+V+Mo)/5+ (Cu+Ni)/15；
Remaining is Fe.
Further technical solution is：
Preferably, the weight percent of each component is as follows：
C：0.15-0.18%；
Si：0.5-0.55%；
Mn：1.5-1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.08-0.1%；
Cr：0.15-0.2%；
Ni：0.4-0.45%；
Cu：0.15-0.2%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.42%；
Remaining is Fe；
Preferably, the weight percent of each component is as follows：
C：0.15-0.18%；
Si：0.55%；
Mn：1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.1%；
Cr：0.2%；
Ni：0.4%；
Cu：0.2%；
Ti：0.06%；
Nb：0.05%；
Mo：0.05%；
N：0.012%；
Als：0.015%；
Ceq：0.44%；
Remaining is Fe.
The invention has the advantages that：
In existing sky iron Track desigh, the track travel face of empty iron is all made of plank and is welded, meanwhile, form track row It is one of horizontally disposed in the two plates for walking face, while supporting surface of the upper surface of the block plank as empty iron traveling wheel； Another block of plank is welded in the lower section of horizontally disposed plank, and another block of plank is vertically arranged, and empty iron traveling wheel generally supports In the surface for the plank being vertically arranged, the bending resistance component of the plank that is vertically arranged above as track travel face.
In the present solution, the cross section hot rolling of empty iron track shaped steel is T-shaped, i.e., empty iron is in the side view of track shaped steel T shape, empty iron also include orthogonal two boards, when in use, the upper surface conduct of one block of plate therein with track shaped steel The supporting surface of empty iron traveling wheel, another block of plate be located at the downside of the plate as supporting surface and with the work of supporting surface overhead iron traveling wheel It is in face relationship, bending strength component of another block of plate as empty iron track shaped steel with point.In this way, being assembled in empty rail road Cheng Zhong, due to reducing two weld seams, while the advantage being easily guaranteed that with the quality of track shaped steel by hot rolling sky iron, avoid or Weaken the shaped steel made of plank welding it is possible that welded stress, weld crack, post welding distortion, welding joint structure The influence that the mechanical property that the problems such as uneven brings to empty rail road is brought.Simultaneously as reducing two weld seams, contract significantly The processing and fabricating period in short sky rail road：Empty iron phase is requirement construction week for a distinguishing feature of other track vehicles Phase is short, plays a decisive role in the duration, replaces weldment to be answered in empty iron project with track shaped steel using hot rolling sky iron With being highly desirable；Simultaneously as reducing two weld seams, in can effectively avoid by the way of plank welding inevitably There is a situation where steel waste in blanking process.
Meanwhile the component proportioning of this shaped steel may make the lower yield limit of gained shaped steel to can reach 360 megapascal or more；Tension Intensity can reach 500 megapascal or more；Elongation percentage is more than or equal to 25%；At 20 DEG C, impact absorbing energy is more than or equal to 34AKv/J；0℃ When, impact absorbing energy is more than or equal to 34AKv/J；At -20 DEG C, impact absorbing energy is more than or equal to 34AKv/J；At -40 DEG C, impact is inhaled It receives work(and is more than or equal to 34AKv/J；Meanwhile the corrosion resistance index value I of this shaped steel is within the scope of 5.2-5.7.To sum up, this programme provides Steel not only the low-temperature impact work under each temperature environment conditions meets empty iron and is required with steel, while such as corrosion resistance, Yield limit, tensile strength etc. meet sky iron steel requirement while the above Rm values i.e. tensile strength makes the surface of this shaped steel Also there is ideal wear-resisting property, to can reach the purpose for extending empty rail road service life；It is provided simultaneously using the program Out of shape portion of the shaped steel as empty rail road, compared to arrangement and method for construction weld with steel Q345 planks using existing empty iron, consideration Welding cost, material cost, cost of labor etc., overall cost are only 70% or so of existing arrangement and method for construction.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following Embodiment.
Embodiment 1：
The cross section hot rolling of a kind of hot rolling sky iron track shaped steel, sky iron track shaped steel is T shapes, the weight of each component It is as follows to measure percentage：
C：0.1-0.2%；
Si：0.4-0.6%；
Mn：1.2-1.6%；
P：0.015-0.03%；
S：0.01-0.03%；
V：0.08-0.11%；
Cr：0.15-0.22%；
Ni：0.3-0.45%；
Cu：0.15-0.25%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.44%；
Wherein, Ceq=C+Mn/6+ (Cr+V+Mo)/5+ (Cu+Ni)/15；
Remaining is Fe.
In the present embodiment, above formula：It is each on rear side of equal sign in Ceq=C+Mn/6+ (Cr+V+Mo)/5+ (Cu+Ni)/15 The symbol of element represents weight percent content of the element in shaped steel, as C indicates weight percent of the carbon in shaped steel Content, concrete numerical value 0.1-0.2%；Mn indicates weight percent content of the manganese element in shaped steel, concrete numerical value 1.2- 1.6%；Remaining Cr, V, Mo, Cu, Ni correspond to the weight percent content in each comfortable shaped steel of chromium, vanadium, molybdenum, copper, nickel respectively.Als Indicate the weight percent content of dissolved aluminum.
The weathering steel percentage composition weight table of offer is as shown in the table：
The mechanical performance data table of corresponding weathering steel is as shown in the table：
The corrosion resistance index value I of the above component proportioning gained shaped steel is within the scope of 5.2-5.7.
In the above mechanical performance data table：I indicates that corrosion resistance index, ReL indicate that lower yield limit value, Rm indicate that tension refers to Number, A indicate that elongation percentage, AKv indicate impact absorbing energy.Steel provided in this embodiment, not only low temperature impact properties are excellent, simultaneously With good corrosion-resistant and wear-resisting property, while out of shape portion of the shaped steel provided using the program as empty rail road, it compares In the arrangement and method for construction welded with steel Q345 planks using existing empty iron, overall cost is only 70% or so of existing arrangement and method for construction.
As those skilled in the art, it is above remaining for iron statement in, due to the limitation of the prior art, it should be understood that Including iron and other inevitable impurity.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1：
A kind of hot rolling sky iron track shaped steel is provided, the weight percent of each component is as follows：
C：0.15-0.18%；
Si：0.5-0.55%；
Mn：1.5-1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.08-0.1%；
Cr：0.15-0.2%；
Ni：0.4-0.45%；
Cu：0.15-0.2%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.42%；
Remaining is Fe.
Weathering steel percentage composition weight table provided in this embodiment is as shown in the table：
The mechanical performance data table of corresponding weathering steel is as shown in the table：
The corrosion resistance index value I of the above component proportioning gained shaped steel is within the scope of 5.4-5.7.
In the above mechanical performance data table：I indicates that corrosion resistance index, ReL indicate that lower yield limit value, Rm indicate that tension refers to Number, A indicate that elongation percentage, AKv indicate impact absorbing energy.Steel provided in this embodiment, not only low temperature impact properties are excellent, simultaneously With good corrosion-resistant and wear-resisting property, while out of shape portion of the shaped steel provided using the program as empty rail road, it compares In the arrangement and method for construction welded with steel Q345 planks using existing empty iron, overall cost is only the 71-73% of existing arrangement and method for construction.
Embodiment 3：
The present embodiment is further qualified on the basis of embodiment 1：
A kind of hot rolling sky iron track shaped steel is provided, the weight percent of each component is as follows：
C：0.15-0.18%；
Si：0.55%；
Mn：1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.1%；
Cr：0.2%；
Ni：0.4%；
Cu：0.2%；
Ti：0.06%；
Nb：0.05%；
Mo：0.05%；
N：0.012%；
Als：0.015%；
Ceq：0.44%；
Remaining is Fe.
The weathering steel percentage composition weight table of offer is as shown in the table：
The mechanical performance data table of corresponding weathering steel is as shown in the table：
The corrosion resistance index value I of the above component proportioning gained shaped steel is within the scope of 5.5-5.7.
In the above mechanical performance data table：I indicates that corrosion resistance index, ReL indicate that lower yield limit value, Rm indicate that tension refers to Number, A indicate that elongation percentage, AKv indicate impact absorbing energy.Steel provided in this embodiment, not only low temperature impact properties are excellent, simultaneously With good corrosion-resistant and wear-resisting property, while out of shape portion of the shaped steel provided using the program as empty rail road, it compares In the arrangement and method for construction welded with steel Q345 planks using existing empty iron, overall cost be only existing arrangement and method for construction 72% to 73%.
The above content is combine specific preferred embodiment to the further description of the invention made, and it cannot be said that originally The specific implementation mode of invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, The other embodiment obtained in the case where not departing from technical scheme of the present invention should be included in the protection domain of corresponding invention.

Claims (3)

1. a kind of hot rolling sky iron track shaped steel, which is characterized in that the cross section hot rolling of sky iron track shaped steel is T shapes, and The sky iron is as follows with the weight percent of its each component of track shaped steel：
C：0.1-0.2%；
Si：0.4-0.6%；
Mn：1.2-1.6%；
P：0.015-0.03%；
S：0.01-0.03%；
V：0.08-0.11%；
Cr：0.15-0.22%；
Ni：0.3-0.45%；
Cu：0.15-0.25%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.44%；
Wherein, Ceq=C+Mn/6+ (Cr+V+Mo)/5+ (Cu+Ni)/15；
Remaining is Fe.
2. a kind of hot rolling sky iron track shaped steel according to claim 1, which is characterized in that the weight percent of its each component Than as follows：
C：0.15-0.18%；
Si：0.5-0.55%；
Mn：1.5-1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.08-0.1%；
Cr：0.15-0.2%；
Ni：0.4-0.45%；
Cu：0.15-0.2%；
Ti：0.05-0.06%；
Nb：0.04-0.05%；
Mo：0.04-0.05%；
N：0.01-0.012%；
Als：0.015-0.02%；
Ceq：0.4-0.42%；
Remaining is Fe.
3. a kind of hot rolling sky iron track shaped steel according to claim 1, which is characterized in that the weight percent of its each component Than as follows：
C：0.15-0.18%；
Si：0.55%；
Mn：1.6%；
P：0.02-0.03%；
S：0.015-0.03%；
V：0.1%；
Cr：0.2%；
Ni：0.4%；
Cu：0.2%；
Ti：0.06%；
Nb：0.05%；
Mo：0.05%；
N：0.012%；
Als：0.015%；
Ceq：0.44%；
Remaining is Fe.
CN201810468275.6A 2018-05-16 2018-05-16 A kind of hot rolling sky iron track shaped steel Pending CN108342652A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06316727A (en) * 1993-04-30 1994-11-15 Nippon Steel Corp Production of bainitic steel rail excellent in surface damage resistance
JP2000144325A (en) * 1998-11-04 2000-05-26 Nippon Steel Corp Bainitic aluminum killed steel rail excellent in gas pressure weldability
JP2000199041A (en) * 1999-01-07 2000-07-18 Nippon Steel Corp Bainitic rail excellent in rolling fatigue damaging resistance and inside fatigue damaging resistance
CN101578446A (en) * 2007-11-12 2009-11-11 新日本制铁株式会社 Process for production of common rails and partially strengthened common rails
CA2973678A1 (en) * 2015-01-23 2016-07-28 Nippon Steel & Sumitomo Metal Corporation Rail

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06316727A (en) * 1993-04-30 1994-11-15 Nippon Steel Corp Production of bainitic steel rail excellent in surface damage resistance
JP2000144325A (en) * 1998-11-04 2000-05-26 Nippon Steel Corp Bainitic aluminum killed steel rail excellent in gas pressure weldability
JP2000199041A (en) * 1999-01-07 2000-07-18 Nippon Steel Corp Bainitic rail excellent in rolling fatigue damaging resistance and inside fatigue damaging resistance
CN101578446A (en) * 2007-11-12 2009-11-11 新日本制铁株式会社 Process for production of common rails and partially strengthened common rails
CA2973678A1 (en) * 2015-01-23 2016-07-28 Nippon Steel & Sumitomo Metal Corporation Rail

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Application publication date: 20180731