CN108642382A - A kind of weathering steel and empty iron track girder - Google Patents
A kind of weathering steel and empty iron track girder Download PDFInfo
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- CN108642382A CN108642382A CN201810467868.0A CN201810467868A CN108642382A CN 108642382 A CN108642382 A CN 108642382A CN 201810467868 A CN201810467868 A CN 201810467868A CN 108642382 A CN108642382 A CN 108642382A
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- panel
- traveling wheel
- track girder
- reinforcing plate
- walking
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 49
- 229910000870 Weathering steel Inorganic materials 0.000 title claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims description 56
- 239000000463 material Substances 0.000 claims description 21
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 23
- 238000005260 corrosion Methods 0.000 abstract description 23
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000003466 welding Methods 0.000 description 11
- 238000005728 strengthening Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 235000019219 chocolate Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- C22C38/04—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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing 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
- C22C38/42—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
- C22C38/50—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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/22—Tracks for railways with the vehicle suspended from rigid supporting rails
- E01B25/24—Supporting rails; Auxiliary balancing rails; Supports or connections for rails
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of weathering steel and empty iron track girder, the weight percent of each component are as follows：C：0.05 0.08%；Si：0.35 0.45%；Mn：1.45 1.55%；P：0.06 0.09%；S≤0.015%；Cr：≤ 0.4%；Ni：0.15 0.2%；Cu：0.25 0.3%；Ti：≤ 0.025%；Remaining is Fe, and shown track girder includes walking panel and guide panel, and shown walking panel and guide panel use the weathering steel.This weathering steel items mechanical property is good, while having ideal corrosion resistance and manufacture economy.
Description
Technical field
The present invention relates to technical field of metal material, more particularly to a kind of weathering 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 diverse geographic location weather conditions differ greatly, although empty rail road appearance is painted, in it
Portion is but chronically exposed in air, is easy by atmospheric corrosion in humid area or coastal area, the empty rail road of state is set still
Meter, need to choose whether to use weathering steel according to different climatic environments.
Non- weather-proof steel material
The area good for some weather conditions, ambient humidity is little, material exposed to the atmosphere are easier by corruption
Erosion, can be used non-weather-proof steel material, and the more common Q345B of corrosion resistance is suitable, and in the case, steel use the longevity
Life is suitable compared with common Q 345B.
Short-term rust prevention material
General period of the steel from producing to coming into operation is longer, and the time is then 1 month or more short, and the time is grown 1 year reachable
More than, in addition empty rail road construction outdoors, to prevent steel from using preceding generation corrosion in blanking, can be used have it is short
The material of phase antirust ability, to be unlikely to just to have had rusty stains using preceding in blanking.The steel for having short-term rust prevention ability, with
The composite factors such as chemical composition, rolling mill practice, tissue, the oxide skin of material are related, need to make further research.
Weather-proof steel material
Weathering steel also known as weather resisting steel are now widely used in the fields such as building, vehicle, container, bridge, are one
Class has the low-alloy steel of good corrosion resistance in an atmosphere.Studies at home and abroad show that weathering steel process exposes for a long time
In air, surface will generate one layer of densification and the good oxidation product of adhesion make steel matrix and extraneous corrosive substance every
Absolutely, to significantly improve the corrosion resistance of weathering steel.There are three types of modes for the use of weathering steel：It is exposed use, application use and
It is used after rusty scale stabilization processes, wherein exposed using being the best occupation mode of weathering steel, other occupation modes all can be certain
Increase cost to degree.Generally in the exposed weathering steel used of no serious atmospheric pollution or non-specifically humid region, initial stage meeting
Experience corrosion, but after the about 3-10 years, rusty scale is gradually stablized, and corrosion slows down significantly, appearance chocolate.
For harsh environments such as some coastal areas, long-term humidity larger areas, existing weather-proof steel material can be used
The atmospheric corrosion resistance index of (Q345NQR2,09CuPCrNi-A), the more common Q345B of corrosion resistance improve 55% with
On, it is in the case, single to consider that the service life of steel can be improved 50% or more compared with common Q 345B from corrosion-resistant angle.
It is proposed that a kind of mechanical property meets empty iron orbit construction while having ideal corrosion resistance and economy
Material, and the structure design of sky iron track girder is advanced optimized, it is that those skilled in the art's technology urgently to be resolved hurrily is asked
Topic.
Invention content
Meet empty iron orbit construction for a kind of mechanical property of proposition set forth above while having ideal corrosion-resistant
The problem of material of performance and economy is those skilled in the art's technical problem urgently to be resolved hurrily, the present invention provides one
Kind weathering steel, this weathering steel items mechanical property is good, while having ideal corrosion resistance and manufacture economy.
The technological means of this programme is as follows, and the weight percent of a kind of weathering steel, each component is as follows：
C：0.05-0.08%；
Si：0.35-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：≤ 0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：≤ 0.025%；
Remaining is Fe.
Further technical solution is：
Preferably, the weight percent of each component is as follows：
C：0.05-0.08%；
Si：0.4-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35-0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：0.01-0.02%；
Remaining is Fe.
Preferably, the weight percent of each component is as follows：
C：0.06%；
Si：0.4%；
Mn：1.48%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35%；
Ni：0.17%；
Cu：0.26%；
Ti：0.015%；
Remaining is Fe.
Meanwhile this case additionally provides a kind of empty iron track girder, including walking panel and guide panel, the walking panel
And the material of guide panel is one weathering steel provided of any of the above.
In the prior art, support panel of the walking panel as empty iron train traveling wheel, for realizing perpendicular to empty iron train
Histogram to constraint；Support panel of the guide panel as empty iron train directive wheel, for realizing to empty iron train in track girder
It is constrained in width direction.Using above scheme, it may make obtained track girder items mechanical property good, while there is reason
Corrosion resistance, weatherability and the manufacture economy thought.
As a kind of further technical solution of above-described empty iron track girder：
The walking panel includes in the traveling wheel support plate for being used to support sky iron traveling wheel, lower end and traveling wheel support plate
The ribs for holding the connection rib to connect, upper end to connect with traveling wheel support plate lower end, the extension side of the connection rib and ribs
To the extending direction each along traveling wheel support plate；
In the vertical direction, it connects rib and the relative position of ribs mutually staggers；
Be both provided with bolt hole in the connection rib and guide panel, further include connection bolt, the walking panel with lead
To panel relationship is bolted by more connection bolt formation being threaded through in bolt hole.
In the prior art, it is contemplated that material utilization amount and track girder weight, when in-orbit pavement slab designs, general use is set as
Track panel includes providing the walking panel of walking surface for traveling wheel and playing bending resistance booster action as walking surface board bottom portion
Ribs.Therefore it in the present solution, is set as：In the vertical direction, it connects rib and the relative position of ribs mutually staggers, meanwhile,
Bolt hole is both provided on connection rib and guide panel, above-mentioned bolt hole is realized walking panel and led for wearing connection bolt
It is bolted relationship to panel formation.That is connector of the connection rib as walking panel and guide panel on walking panel, complete
After being connect with guide panel at walking panel, there is gap, the above gap to use in the horizontal direction between ribs and connection rib
In the relative position for adapting to traveling wheel and directive wheel on empty iron, that is, ensure that traveling wheel is located at right over ribs and along ribs
When movement, directive wheel can be with the interior side contacts of guide panel.
In the prior art, guide panel is typically secured on crane span structure, and walking panel is realized typically merely by guide panel
Position constraint in space.It is bolted, while providing a kind of specific with guide panel in the present solution, being set as walking panel
Walking panel concrete form when realizing that walking panel is connect with guide panel, it is traditional to be avoided using this programme for use
The factors such as the introduced welding heat damage track girder mechanical property of welding connecting mode and corrosion resistance, therefore this programme has easily
In ensure track girder items design performance the characteristics of, meanwhile, in assembly, due to realizing reliable bolted efficiency higher than real
The efficiency being now reliably welded to connect, therefore this programme also has the characteristics that be conducive to improve track girder efficiency of assembling；Meanwhile the prior art
In, the traveling wheel generally used, for the walking surface for being used to support traveling wheel, improves for rigid wheel with the design speed per hour of empty iron
Increase with the design bearing capacity of empty iron, although walking panel may be designed as having ideal wear-resisting property, but reality is using
It still can occur inevitably to wear in the process, walking panel is such as carried out more when progress track girder is safeguarded using this programme
When changing, the destructive operation of such as thermal cutting need not be carried out to track girder, therefore uses the track girder that this programme provides also with easy
In maintenance and the fireballing feature of walking panel replacement.
Any one group of mutual cooperation with formed it is described be bolted in two bolts hole of relationship, at least one bolt hole
For strip-shaped hole, and the length direction of the strip-shaped hole is along the length direction of traveling wheel support plate.As those skilled in the art,
During being bolted more than realizing, for any one connection bolt, it is required to two bolts hole：One of bolt
On connection rib, another bolt hole is arranged in guide panel for hole setting, for the bolt hole for strip-shaped hole, may be configured as single
Bolt hole accommodates more connection bolts simultaneously, also may be configured as a bolt hole and only accommodate also connect bolt.Using this programme,
Structure connection request can be met by being cut in use due to connection bolt, therefore when realizing tools for bolts ' pretension, ensure walking
The relative position of panel and guide panel need not be installed as connection bolt high intensity tension, i.e., need not pass through connection
Bolt realizes guide panel and connects the strong extruding between rib, in this way, being limited to the length direction of strip-shaped hole along traveling wheel
The length direction of support plate may make when this track girder installation environment four seasons, difference variation was larger in the form of upper bolt hole
In the length direction along traveling wheel support plate, can mutually it be transported between guide panel and connection rib under track girder thermal deformation
Dynamic, the above mutual movement can be reduced or eliminated on track girder because expanding with heat and contract with cold caused stress, be conducive to optimization track girder
Stress.
As connection bolt specific implementation, it is described connection bolt include one end be provided with end bolt part and
The nut being threadedly connected on bolt part, the nut are located at side of the connection rib far from guide panel.In the prior art, one
As by two pieces walking panels empty iron train is supported：One of walking panel provides the walking on the left of empty iron train
Face, another piece of walking panel provide the walking surface on the right side of empty iron train, and track panel also uses two pieces, is respectively used to arrange empty iron
The directive wheel of vehicle left and right side is constrained.Meanwhile two walk panel generally with the gap passed through for pendant.More than
Scheme is equivalent to each connection bolt and completes after installing, and the nut being connect with bolt partial threads is located at the surrounded gate of track girder
The inside in space, in this way, by the gate space, it can be achieved that being protected the screw thread on connection bolt to ensure to connect spiral shell
Bolt can have detachability for a long time.
When panel of walking provides support for empty iron train, since the contact point with traveling wheel on walking panel is located at walking
Material is being saved as one kind in the side of panel and guide panel tie point in this way, walking panel is equivalent to as a cantilever beam
In the case of, deformation amount of panel of walking during use can be reduced, to ensure the technology of dimensional stability during track girder use
Scheme further includes the first reinforcing plate of polylith, the rectangular triangle plate of the first reinforcing plate, and wherein one of the first reinforcing plate is straight
The arm of angle connects with the bottom surface of traveling wheel support plate, and the first reinforcing plate is located at the underface of connection rib, and described wherein one straight
The acute angle of arm of angle end intersects with ribs, and another right-angle side is located at side of the connection rib far from ribs；
The first reinforcing plate of polylith is arranged successively along the length direction of traveling wheel support plate.In the present solution, above first adds
Strong plate is actually traveling wheel support plate bending resistance strengthening part.The specific connection type of first reinforcing plate can effectively reduce traveling wheel
Rib and the stress at traveling wheel support plate link position are connected in support plate.
As a kind of technical solution reducing connection rib and stress at traveling wheel support plate link position on connection rib, also
Including the second reinforcing plate of polylith, the rectangular triangle plate of the second reinforcing plate, wherein right-angle side of the second reinforcing plate with
Side of the connection rib far from ribs connects, the upper surface phase of another right-angle side and traveling wheel support plate of the second reinforcing plate
It connects；
The second reinforcing plate of polylith is arranged successively along the length direction of traveling wheel support plate.
As described above, in the technical solution including the first reinforcing plate and the second reinforcing plate, actually entirely walk panel master
To include traveling wheel support plate, ribs, connection rib, the first reinforcing plate, the second reinforcing plate these components, to ensure panel of walking
Mechanical property, ensure walking panel the accuracy of manufacture and manufacture efficiency, be set as：The walking panel is as obtained by casting
Integral structure.I.e. the structure design of polylith plate welding splicing also can be used in actually walking panel, but welds splicing meeting
Subsequent heat treatment or performance unreliability are brought, while longer weld seam also influences panel preparation efficiency of walking.
As those skilled in the art, the above concrete structure to track girder limit be of virtually it is as proposed above excellent
Gesture, specific track beam structure actually as proposed above design can not also use weathering steel as proposed above, and use existing
Other steel in technology are implemented to obtain track girder, while when being implemented using other steel in the prior art, also have upper
State the structure design advantage of proposition.
Preferably, for the benefit of reliability of track girder mechanical property, is preferably arranged to the extending direction along track girder,
It arranges successively multiple connection bolt set-points, while the second reinforcing plate of polylith is arranged successively along the length direction of traveling wheel support plate
Cloth is intended to avoid stress raisers on this track girder, for the implementation of the second reinforcing plate of arrangement above bar shaped, in bolt
When hole is strip-shaped hole, the position of the second reinforcing plate and strip-shaped hole thereon that are set as in guide panel mutually staggers, in this way, first
Dismounting, the setting bolt hole etc. of connection bolt can be influenced to avoid the second reinforcing plate, secondly also can avoid the second reinforcing plate influences
Connect bolt and guide panel relative motion.It is multiple to be preferably arranged to strip-shaped hole and the second reinforcing plate in guide panel, is appointed
The second reinforcing plate is all had between two adjacent strip-shaped holes of anticipating.
The invention has the advantages that：
Yield limit can reach 350 megapascal or more under the weathering steel that this programme provides；Tensile strength can reach 480 megapascal with
On；Elongation percentage is more than or equal to 24%；At 20 DEG C, impact absorbing energy is more than or equal to 120AKv/J；At 0 DEG C, impact absorbing energy is more than
Equal to 120AKv/J；At -20 DEG C, impact absorbing energy is more than or equal to 90AKv/J；At -40 DEG C, impact absorbing energy is more than or equal to
60AKv/J；Meanwhile the welding crack sensibility exponential quantity of this weathering steel, 0.188 or so, corrosion resistance index value is 7.1 or so；
The weathering steel that this programme provides not only has ideal mechanical property, welding performance and corrosion resistance, while its ingredient is matched
Than so that its cost of material is only the 75-87% of existing weathering steel Q345NQR2.
In track girder scheme provided above, it may make obtained track girder items mechanical property good, while there is reason
Corrosion resistance, weatherability and the manufacture economy thought.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of empty iron one specific embodiment of track girder provided by the invention；
Fig. 2 is the stereochemical structure for panel of walking in a kind of empty iron one specific embodiment of track girder provided by the invention
Schematic diagram；
Fig. 3 is the side view for panel of walking in a kind of empty iron one specific embodiment of track girder provided by the invention.
Reference numeral in figure is respectively：1, it walks panel, 11, traveling wheel support plate, 2, connection bolt, 3, guide surface
Plate, 4, ribs, 5, connection rib, 6, bolt hole, the 7, first reinforcing plate, the 8, second reinforcing plate.
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 weight percent of a kind of weathering steel, each component is as follows：
C：0.05-0.08%；
Si：0.35-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：≤ 0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：≤ 0.025%；
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：
In the above weight percentage scale, the weight percentage of C, Si, Mn, P, Cr, Ni, Cu, Ti measure respective data area
When intermediate value, Pcm=0.188, I=7.1.
In the above mechanical performance data table：Pcm indicates that welding crack sensibility index, I indicate corrosion resistance index, ReL tables
Show that lower yield limit value, Rm indicate that tensile index, A indicate that elongation percentage, AKv indicate impact absorbing energy.This programme system is used simultaneously
The box beam for making empty rail road, may make that box beam steel cost of material is only the 75-87% of existing weathering steel Q345NQR2.
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 weathering steel is provided, the weight percent of each component is as follows：
C：0.05-0.08%；
Si：0.4-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35-0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：0.01-0.02%；
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：
In the above weight percentage scale, the weight percentage of C, Si, Mn, P, Cr, Ni, Cu, Ti measure respective data area
When intermediate value, Pcm=0.189, I=7.2.
In the above mechanical performance data table：Pcm indicates that welding crack sensibility index, I indicate corrosion resistance index, ReL tables
Show that lower yield limit value, Rm indicate that tensile index, A indicate that elongation percentage, AKv indicate impact absorbing energy.This programme system is used simultaneously
The box beam for making empty rail road, may make that box beam steel cost of material is only the 78-83% of existing weathering steel Q345NQR2.
Embodiment 3：
The present embodiment is further qualified on the basis of embodiment 1：
A kind of weathering steel is provided, the weight percent of each component is as follows：
C：0.06%；
Si：0.4%；
Mn：1.48%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35%；
Ni：0.17%；
Cu：0.26%；
Ti：0.015%；
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：
In the above mechanical performance data table：ReL indicate lower yield limit value, Rm indicate tensile index, A indicate elongation percentage,
AKv indicates impact absorbing energy.The box beam for being made empty rail road of this programme simultaneously, may make that box beam steel cost of material is only
The 79-81% of existing weathering steel Q345NQR2.
Embodiment 4：
The present embodiment is further qualified on the basis of any of the above one embodiment, as shown in Figure 1 to Figure 3：This reality
It applies example and discloses a kind of empty iron track girder, including walking panel 1 and guide panel 3, the walking panel 1 and guide panel 3
Material be weathering steel that any of the above one embodiment is provided.
In the prior art, support panel of the walking panel 1 as empty iron train traveling wheel, for realizing perpendicular to empty iron train
Histogram to constraint；Support panel of the guide panel 3 as empty iron train directive wheel, for realizing to empty iron train in track girder
It is constrained in width direction.Using above scheme, it may make obtained track girder items mechanical property good, while there is reason
Corrosion resistance, weatherability and the manufacture economy thought.
Embodiment 5：
The present embodiment is further qualified on the basis of embodiment 4, as shown in Figure 1 to Figure 3：The walking panel 1 wraps
Include the traveling wheel support plate 11 for being used to support sky iron traveling wheel, the connection rib 5 that lower end connects with 11 upper end of traveling wheel support plate, on
Hold what is connected with 11 lower end of traveling wheel support plate to strengthen 4, the extending direction for connecting rib 5 and strengthening 4 is each along walking
Take turns the extending direction of support plate 11；
In the vertical direction, connection rib 5 and the relative position for strengthening 4 mutually stagger；
It is both provided with bolt hole 6 in the connection rib 5 and guide panel 3, further includes connection bolt 2, the walking panel 1
The formation of bolt 2 is connect by more be threaded through in bolt hole 6 be bolted relationship with guide panel 3.
In the prior art, it is contemplated that material utilization amount and track girder weight, when in-orbit pavement slab designs, general use is set as
Track panel includes providing the walking panel 1 of walking surface for traveling wheel and playing bending resistance booster action as 1 bottom of walking panel
Strengthen 4.Therefore it in the present solution, is set as：In the vertical direction, connection rib 5 and the relative position for strengthening 4 mutually stagger,
Meanwhile connecting and being both provided with bolt hole 6 in rib 5 and guide panel 3, above-mentioned bolt hole 6 realizes row for wearing connection bolt 2
It walks panel 1 and is bolted relationship with the formation of guide panel 3.Connection rib 5 is as walking panel 1 and guide surface i.e. on walking panel 1
The connector of plate 3 strengthens between 4 and connection rib 5 in the horizontal direction after completing walking panel 1 and being connect with guide panel 3
With gap, the above gap is used to adapt to the relative position of traveling wheel and directive wheel on empty iron, that is, ensures that traveling wheel is located at and reinforce
Right over 4 and along when strengthening 4 and moving, directive wheel can be with the interior side contacts of guide panel 3.
In the prior art, guide panel 3 is typically secured on crane span structure, and walking panel 1 is realized typically merely by guide panel 3
Position constraint in space.It is bolted with guide panel 3 in the present solution, being set as walking panel 1, while providing one kind
Specific walking 1 concrete form of panel is avoided and is adopted when realizing that walking panel 1 is connect with guide panel 3 using this programme
With factors such as the introduced welding heat damage track girder mechanical property of traditional welding connecting mode and corrosion resistances, thus it is our
Case has the characteristics that be easy to ensure track girder items design performance, meanwhile, in assembly, due to realizing reliable bolted effect
Rate is higher than the efficiency that realization is reliably welded to connect, therefore this programme also has the characteristics that be conducive to improve track girder efficiency of assembling；Meanwhile
In the prior art, the traveling wheel generally used is rigid wheel, for the walking surface for being used to support traveling wheel, with the design of empty iron
Speed per hour improves and the design bearing capacity of empty iron increases, real although walking panel 1 may be designed as having ideal wear-resisting property
Border still can occur inevitably to wear in use, using this programme, when progress track girder is safeguarded, such as into every trade
When walking the replacement of panel 1, the destructive operation of such as thermal cutting need not be carried out to track girder, therefore the track girder of this programme offer is provided
It is fireballing also to have the characteristics that easy to maintain and walking panel 1 is replaced.
Any one group of mutual cooperation with formed it is described be bolted in two bolts hole 6 of relationship, at least one bolt
Hole 6 is strip-shaped hole, and the length direction of the strip-shaped hole is along the length direction of traveling wheel support plate 11.As art technology
Personnel during being bolted more than realizing, for any one connection bolt 2, are required to two bolts hole 6：Wherein
One setting of bolt hole 6 is on connection rib 5, and another bolt hole 6 is arranged in guide panel 3, for the bolt hole for strip-shaped hole
6, it may be configured as single bolt hole 6 while accommodating more connection bolts 2, also may be configured as a bolt hole 6 and only accommodate also connect
Connecting bolt 2.Using this programme, structure connection request can be met by being cut in use due to connection bolt 2, therefore realized
When tools for bolts ' pretension, ensure the relative position of walking panel 1 and guide panel 3, connection 2 high intensity of bolt need not be installed as
Tension need not realize guide panel 3 by connecting bolt 2 and connect the strong extruding between rib 5, in this way, being limited to item
The length direction in shape hole along traveling wheel support plate 11 length direction, it is larger in this track girder installation environment four seasons difference variation
When, it may make in the form of upper bolt hole 6 in the length direction along traveling wheel support plate 11, led under track girder thermal deformation
It is movable in the axial direction to each other between panel 3 and connection rib 5, the above mutual movement can be reduced or eliminated on track girder because expanding with heat and contract with cold institute
The stress brought is conducive to the stress of optimization track girder.
As the specific implementation of connection bolt 2, the connection bolt 2 includes the bolt part that one end is provided with end
With the nut being threadedly connected on bolt part, the nut is located at side of the connection rib 5 far from guide panel 3.The prior art
In, generally empty iron train is supported by two pieces of walking panels 1：One of walking panel 1 is provided on the left of empty iron train
Walking surface, another piece of walking panel 1 provide the walking surface on the right side of empty iron train, and track panel also uses two pieces, is respectively used to
The directive wheel of empty iron train left and right side is constrained.Meanwhile two walk panel 1 generally with the gap passed through for pendant.
Using above scheme, it is equivalent to each connection bolt 2 and completes after installing, the nut being connect with bolt partial threads is located at track girder institute
Surround the inside in gate space, in this way, by the gate space, it can be achieved that connection bolt 2 on screw thread protected with
Ensure that connection bolt 2 can have detachability for a long time.
When panel 1 of walking provides support for empty iron train, since the contact point with traveling wheel on walking panel 1 is located at row
The side of panel 1 and 3 tie point of guide panel is walked, in this way, walking panel 1 is equivalent to as a cantilever beam, is being saved as one kind
About under material context, walking 1 deflection of panel during use can be reduced, to ensure dimensional stability during track girder use
Technical solution, further include the first reinforcing plate of polylith 7, first reinforcing plate, 7 rectangular triangle plate, the first reinforcing plate 7
Wherein a right-angle side connects with the bottom surface of traveling wheel support plate 11, and the first reinforcing plate 7 is located at the underface of connection rib 5, institute
The acute angle for the wherein one right-angle side end stated and strengthen 4 intersections, another right-angle side is located at connection rib 5 far from strengthening 4
Side；
The first reinforcing plate of polylith 7 is arranged successively along the length direction of traveling wheel support plate 11.In the present solution, above first
Reinforcing plate 7 is actually 11 bending resistance strengthening part of traveling wheel support plate.The specific connection type of first reinforcing plate 7 can effectively reduce
Rib 5 and the stress at 11 link position of traveling wheel support plate are connected in traveling wheel support plate 11.
As a kind of technical side reducing connection rib 5 and stress at 11 link position of traveling wheel support plate on connection rib 5
Case, further includes the second reinforcing plate of polylith 8, second reinforcing plate, 8 rectangular triangle plate, wherein one of the second reinforcing plate 8
Right-angle side connects with rib 5 is connect far from the side for strengthening 4, another right-angle side and the traveling wheel support plate of the second reinforcing plate 8
11 upper surface connects；
The second reinforcing plate of polylith 8 is arranged successively along the length direction of traveling wheel support plate 11.
As described above, in the technical solution including the first reinforcing plate 7 and the second reinforcing plate 8, panel 1 of actually entirely walking
Include mainly traveling wheel support plate 11, strengthen 4, connection rib 5, the first reinforcing plate 7, second reinforcing plate 8 these components, to ensure
The mechanical property of walking panel 1, the accuracy of manufacture and manufacture efficiency for ensureing walking panel 1, are set as：The walking panel 1 is
Integral structure as obtained by casting.I.e. actually the structure design that the welding of polylith plate is spliced also can be used in walking panel 1,
But welding splicing can bring subsequent heat treatment or performance unreliability, while longer weld seam also influences the preparation effect of panel 1 of walking
Rate.
As those skilled in the art, the above concrete structure to track girder limit be of virtually it is as proposed above excellent
Gesture, specific track beam structure actually as proposed above design can not also use weathering steel as proposed above, and use existing
Other steel in technology are implemented to obtain track girder, while when being implemented using other steel in the prior art, also have upper
State the structure design advantage of proposition.
Preferably, for the benefit of reliability of track girder mechanical property, is preferably arranged to the extending direction along track girder,
Arrange successively multiple 2 set-points of connection bolt, at the same the second reinforcing plate of polylith 8 along traveling wheel support plate 11 length direction according to
Secondary arrangement is intended to avoid stress raisers on this track girder, for the implementation of the second reinforcing plate of arrangement above bar shaped 8,
When bolt hole 6 is strip-shaped hole, the position of the second reinforcing plate 8 and strip-shaped hole thereon that are set as in guide panel 3 mutually staggers, this
Sample can influence dismounting, setting bolt hole 6 of connection bolt 2 etc. to avoid the second reinforcing plate 8, secondly also can avoid second first
Reinforcing plate 8 influences connection bolt 2 and 3 relative motion of guide panel.Strip-shaped hole and second in guide panel 3 is preferably arranged to reinforce
Plate 8 is multiple, and the second reinforcing plate 8 is all had between arbitrary two adjacent strip-shaped hole.
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 (10)
1. a kind of weathering steel, which is characterized in that the weight percent of its each component is as follows：
C：0.05-0.08%；
Si：0.35-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：≤ 0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：≤ 0.025%；
Remaining is Fe.
2. a kind of weathering steel according to claim 1, which is characterized in that the weight percent of its each component is as follows：
C：0.05-0.08%；
Si：0.4-0.45%；
Mn：1.45-1.55%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35-0.4%；
Ni：0.15-0.2%；
Cu：0.25-0.3%；
Ti：0.01-0.02%；
Remaining is Fe.
3. a kind of weathering steel according to claim 1, which is characterized in that the weight percent of its each component is as follows：
C：0.06%；
Si：0.4%；
Mn：1.48%；
P：0.06-0.09%；
S≤0.015%；
Cr：0.35%；
Ni：0.17%；
Cu：0.26%；
Ti：0.015%；
Remaining is Fe.
4. a kind of sky iron track girder, including walking panel (1) and guide panel (3), which is characterized in that the walking panel
(1) and the material of guide panel (3) is weathering steel that any one of claim 1-3 is provided.
5. a kind of empty iron track girder according to claim 4, which is characterized in that the walking panel (1) includes being used for
Connection rib (5) that the traveling wheel support plate (11) of the empty iron traveling wheel of support, lower end connect with traveling wheel support plate (11) upper end, on
The extending direction of the ribs (4) that end connects with traveling wheel support plate (11) lower end, the connection rib (5) and ribs (4) is equal
Along the extending direction of traveling wheel support plate (11)；
In the vertical direction, the relative position of connection rib (5) and ribs (4) mutually staggers；
It is both provided with bolt hole (6) in the connection rib (5) and guide panel (3), further includes connection bolt (2), the walking
Panel (1) connect bolt (2) formation by more be threaded through in bolt hole (6) with guide panel (3) and is bolted relationship.
6. a kind of empty iron track girder according to claim 5, which is characterized in that any one group of mutual cooperation is to form
In two bolts hole (6) for stating the relationship of being bolted, at least one bolt hole (6) is strip-shaped hole, and the length of the strip-shaped hole
Spend length direction of the direction along traveling wheel support plate (11).
7. a kind of empty iron track girder according to claim 5, which is characterized in that the connection bolt (2) includes one end
It is provided with the bolt part of end and the nut being threadedly connected on bolt part, rib (5) is separate to lead the nut positioned at connecting
To the side of panel (3).
8. a kind of empty iron track girder according to claim 5, which is characterized in that further include the first reinforcing plate of polylith (7),
The rectangular triangle plate of first reinforcing plate (7), the wherein right-angle side and traveling wheel support plate of the first reinforcing plate (7)
(11) bottom surface connects, and the first reinforcing plate (7) is located at the underface of connection rib (5), a wherein right-angle side end
Acute angle intersect with ribs (4), another right-angle side is located at side of the connection rib (5) far from ribs (4)；
The first reinforcing plate of polylith (7) is arranged successively along the length direction of traveling wheel support plate (11).
9. a kind of empty iron track girder according to claim 5, which is characterized in that further include the second reinforcing plate of polylith (8),
The rectangular triangle plate of second reinforcing plate (8), a wherein right-angle side for the second reinforcing plate (8) with to connect rib (5) separate
The side of ribs (4) connects, the upper surface phase of another right-angle side and traveling wheel support plate (11) of the second reinforcing plate (8)
It connects；
The second reinforcing plate of polylith (8) is arranged successively along the length direction of traveling wheel support plate (11).
10. a kind of empty iron track girder according to claim 8 or claim 9, which is characterized in that the walking panel (1) is logical
Cross the integral structure of casting gained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467868.0A CN108642382B (en) | 2018-05-16 | 2018-05-16 | Weathering steel and empty track roof beam for iron |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467868.0A CN108642382B (en) | 2018-05-16 | 2018-05-16 | Weathering steel and empty track roof beam for iron |
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| CN108642382B CN108642382B (en) | 2023-11-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115537662A (en) * | 2022-10-12 | 2022-12-30 | 重庆钢铁股份有限公司 | Normalized Q345qD steel plate for air-rail track beam and manufacturing method thereof |
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| CN108642382B (en) | 2023-11-21 |
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