CN110424257B - Bridge damping support made of graphene material - Google Patents
Bridge damping support made of graphene material Download PDFInfo
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- CN110424257B CN110424257B CN201910745839.0A CN201910745839A CN110424257B CN 110424257 B CN110424257 B CN 110424257B CN 201910745839 A CN201910745839 A CN 201910745839A CN 110424257 B CN110424257 B CN 110424257B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
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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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/041—Elastomeric bearings
Abstract
The invention relates to the field of new materials for road and bridge technologies, and provides a bridge damping support using graphene materials, wherein the damping support comprises a damping device in a sliding box and damping devices on two trapezoidal side plates for bearing vertical loads, and has an obvious damping effect; the damping spring in the damping device is compressed and contracted to realize slow contraction, when the load is reduced, the supporting spring rebounds to give an upward force to the upper supporting plate to drive the connecting rod to move upwards, so that the spring rebounds slowly. The damping spring is prepared from low-temperature-resistant high-strength spring steel, and the spring steel formed by the steel has excellent comprehensive mechanical properties, particularly ultrahigh strength, low-temperature-resistant toughness and hardenability. Even the bridge using the damping support is in a low-temperature area, the phenomenon of losing elasticity can not occur, and the functionality of the damping support is guaranteed.
Description
Technical Field
The invention relates to the technical field of new materials for roads and bridges, in particular to a bridge damping support using graphene materials.
Background
In a bridge structure, a support is erected on a bridge pier, and a device for supporting a bridge superstructure on a ceiling surface is an important part for connecting the bridge superstructure and a substructure, and functions to fix the superstructure to the bridge pier, to receive various forces acting on the superstructure, and to reliably transmit it to the bridge pier.
201720531866.4 discloses a bridge shock-absorbing support, comprising a base plate, the symmetrical backup pad of top fixedly connected with of bottom plate, the top of backup pad is provided with the fly leaf, and the bottom of fly leaf runs through the backup pad and extends to the inside of backup pad, the top fixedly connected with diaphragm of fly leaf, the symmetrical supporting shoe of bottom fixedly connected with of diaphragm, the bottom of supporting shoe is provided with the movable block, the one end of movable block runs through the inside that the supporting shoe extended to the supporting shoe, the bottom fixedly connected with connecting plate of movable block, the first blotter of bottom fixedly connected with of connecting plate, the bottom fixedly connected with buffer spring of first blotter, buffer spring's bottom fixedly connected with second blotter, the bottom of second blotter and the top fixed connection of bottom plate. The whole bridge has high-efficiency anti-seismic and impact-resistant properties, the excessive loss of the bridge is avoided in long-term use, and the service life of the bridge is prolonged.
201720258279.2 provides a bridge damping bearing, including upper bracket slide, undersetting concave plate, shock attenuation rubber and spherical cap welt, its characterized in that: the middle of undersetting concave plate sets up cylindrical recess, and the outside is annular recess, and the cross-section of recess is convex, sets up cylindrical yielding rubber in the cylindrical recess, sets up the sealed steel ring that plays the fixed action in the yielding rubber periphery, and the sealed steel ring setting is provided with the spherical crown welt in the interior bottom surface of the cylindrical recess of undersetting concave plate in yielding rubber bottom and pressing close to the undersetting concave plate on the undersetting concave plate. The utility model discloses a structure gadget that can scale production, simple structure through the elasticity resetting means who sets up, makes bridge vibrations displacement can resume, improves the application safety factor of bridge for bridge beam supports has better bearing capacity, extension service life-span.
201721040113.X discloses a bridge damping support, which comprises a first damping support part, a second damping support part and a support seat; the first damping supporting part and the second damping supporting part respectively comprise an upper steel plate, a lower steel plate and damping units positioned between the upper steel plate and the lower steel plate, each damping unit comprises an upper rubber plate and a lower rubber plate, a plurality of closely-arranged rubber balls are arranged between the upper rubber plate and the lower rubber plate, and the rubber balls are connected through a fixing net penetrating through the centers of the rubber balls; the fixed net is a rope net formed by fixed ropes with staggered warps and wefts; a containing cavity which is sunken downwards is formed in the middle of the supporting seat, at least one spring rubber column is arranged in the containing cavity, each spring rubber column is composed of one rubber column and a spring sleeved on the rubber column, the upper end of each spring rubber column is connected with the lower steel plate of the first damping supporting part, and the lower end of each spring rubber column is connected with the bottom surface of the containing cavity; the diameter of the rubber column is 0.2 mm. Can strengthen the damping effect under the condition of guaranteeing the support function, simple structure, simple to operate.
The refining agent in the prior art cannot meet the use requirement due to high content of impurity elements, serious smoke pollution and standard exceeding of dust-containing particles in the use process; the granularity is non-uniform, the slagging speed at the initial stage of refining is low, large dust still exists in the power transmission process, the duration is long, and the requirements of site environmental protection and guarantee of the occupational health of workers cannot be met; after the refining agent is added, the steel ladle slag has poor deoxidation effect, low melting speed, poor spreadability and foamability and poor impurity adsorption capacity.
In the above patents and the prior art, the rubber product is used as the damping structure of the bridge bearing, but the rubber product has poor weather resistance and is easy to age, and particularly in low-temperature areas, the phenomenon of losing elasticity is easy to occur, and the defects reduce the functionality of the damping bearing.
Disclosure of Invention
In order to solve the problems, the invention provides a bridge damping support made of a graphene material.
A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a micro module and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes, the micro module is fixed in the guide groove, one end of a connecting rod is fixedly connected with the micro sliding block, and the other end of the connecting rod is fixedly connected with the bottom of the outer wall of the damping block; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength spring steel.
The percentages are mass percentages, and the parts are mass parts.
The low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.02% -0.07% of carbon, 0.08% -0.31% of silicon, 0.8% -1.5% of manganese, 2.5% -4.5% of nickel, 0.04% -0.12% of niobium, 0.03% -0.06% of zinc, 0.02% -0.08% of titanium and 0.015% -0.025% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding the aluminum honeycomb enhanced ionic liquid graphene in an amount of 100 parts by weight of molten iron and 0.1-3 parts by weight of aluminum honeycomb enhanced ionic liquid graphene, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, steel billet treatment, namely heating the steel billet to 1100-; then rough rolling is carried out, the temperature of a rough rolling recrystallization zone is 980-; in the finish rolling process, the rolling temperature is 650-805 ℃, the rolling is carried out for 10-20 times, and the accumulated reduction rate is 65-80%; finally, cooling at the rate of 20-30 ℃/s to 120-;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: stirring 100 parts of graphene and 0.01-0.3 part of 1-butyl-3-methylimidazol tetrachloroferrite at 60-90 ℃ for 1-4 hours, then adding 35-55 parts of aluminum honeycomb core and 1-7 parts of fluoroalkyl silyl mica, stirring uniformly, stirring at 80-120 ℃ for 1-4 hours, then pressing into blocks at 4-6MPa, and further crushing into particles to obtain the aluminum honeycomb reinforced ionic liquid graphene.
The top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
The trapezoidal side plate is fixedly connected to the bridge support.
According to the bridge damping support using the graphene material, provided by the invention, the damping support comprises a damping device in a sliding box and damping devices on two trapezoidal side plates for bearing vertical loads, and has an obvious damping effect; the damping spring in the damping device is compressed and contracted to realize slow contraction, when the load is reduced, the supporting spring rebounds to give an upward force to the upper supporting plate to drive the connecting rod to move upwards, so that the spring rebounds slowly. The damping spring is prepared from low-temperature-resistant high-strength piezoelectric spring steel, and the spring steel formed by the steel has excellent comprehensive mechanical properties, particularly ultrahigh strength, low-temperature-resistant toughness and hardenability. Even the bridge using the damping support is in a low-temperature area, the phenomenon of losing elasticity can not occur, and the functionality of the damping support is guaranteed.
This novel aluminium honeycomb reinforcing ionic liquid graphite alkene application effect will obviously be better than general ladle modifier, and it is all very fast to melt sediment speed and slagging speed, and the foamability is good, can effectively satisfy the submerged arc needs when electrode power transmission heating in the earlier stage of refining, is convenient for restrain the dust pollution during refining. The 1-butyl-3-methylimidazole tetrachloroferrite modified ionic liquid graphene has good compatibility with molten iron, can be uniformly mixed and is not easy to delaminate; the layered structure of the fluoroalkyl silyl mica can improve the impact absorption power value, the mechanical impact energy borne by the damping spring is greatly reduced, the service life of the damping spring is prolonged, and the impact absorption power value is improved.
Drawings
FIG. 1 is a metallographic analysis chart of a metallographic structure of a cut sample of the damping spring material prepared in example 4.
Detailed Description
The invention is further illustrated by the following specific examples:
the tensile property of the material is tested by adopting a CSS-44300 universal electronic tensile testing machine, three test samples are taken for each group to be tested, the arithmetic mean value of each property is taken, the tensile test samples are processed according to the standard GB/T228-2002, the tensile test samples are round rod test samples, the gauge length is 50 mm, the diameter in the gauge length range is 10mm, and the tensile speed is 3 mm/min.
The impact test sample is processed according to GB/T18658-2002, the impact test sample is a Charpy V-notch standard sample, the temperature of a V-notch impact test is-60 ℃, the test sample is obtained by adopting liquid nitrogen refrigeration at-60 ℃, the size of the impact test sample is 10mm × 10mm × 55mm, and the depth of a V notch is 2 mm.
In the examples, the percentages are by mass, and the parts are by mass.
Example 1
A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a miniature sliding block and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes, the miniature sliding block is fixed in the guide groove, one end of a connecting rod is fixedly connected with the miniature sliding block, and the other end of the connecting rod is fixedly connected with the bottom of the outer wall of the damping block; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength piezoelectric spring steel.
The low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.03% of carbon, 0.21% of silicon, 1.1% of manganese, 3.2% of nickel, 0.09% of niobium, 0.04% of zinc, 0.04% of titanium and 0.019% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding 100 parts by weight of molten iron and 0.5 part by weight of aluminum honeycomb enhanced ionic liquid graphene, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, processing the steel billet, namely heating the steel billet to 1170 ℃, carrying out descaling operation after heat preservation for 38min, wherein the surface temperature of the steel billet after descaling is 1030 ℃; then rough rolling is carried out, the temperature of a recrystallization zone of the rough rolling is 1000 ℃, and finally the pressing rate is more than 10 percent; in the finish rolling process, the rolling temperature is 705 ℃, the rolling is carried out for 16 times, and the accumulated reduction rate is 75 percent; finally, cooling at the rate of 26 ℃/s to 180 ℃ to obtain the low-temperature-resistant high-strength spring steel;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: stirring 100 parts of graphene and 0.09 part of 1-butyl-3-methylimidazole tetrachloroferrite at 80 ℃ for 3 hours, then adding 45 parts of aluminum honeycomb core and 5 parts of fluoroalkyl silyl mica, uniformly stirring, stirring at 90 ℃ for 3 hours, then pressing at 5MPa into blocks, and further crushing into particles to obtain the aluminum honeycomb reinforced ionic liquid graphene.
The top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
The trapezoidal side plate is fixedly connected to the bridge support.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 671MPa, and the impact absorption power value at minus 60 ℃ is 29.1J.
Example 2
A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a miniature sliding block and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes, the miniature sliding block is fixed in the guide groove, one end of a connecting rod is fixedly connected with the miniature sliding block, and the other end of the connecting rod is fixedly connected with the bottom of the outer wall of the damping block; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength piezoelectric spring steel.
The low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.02% of carbon, 0.08% of silicon, 0.8% of manganese, 2.5% of nickel, 0.04% of niobium, 0.03% of zinc, 0.02% of titanium and 0.015% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding 100 parts by weight of molten iron and 0.1 part by weight of aluminum honeycomb enhanced ionic liquid graphene, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, billet treatment, namely heating the billet to 1100 ℃, carrying out descaling operation after heat preservation for 30min, wherein the surface temperature of the descaled billet is 1000 ℃; then rough rolling is carried out, the temperature of a rough rolling recrystallization zone is 980 ℃, and finally the pressing rate is more than 10%; in the finish rolling process, the rolling temperature is 650 ℃, the rolling is carried out for 10 times, and the accumulated reduction rate is 65 percent; finally, cooling at the rate of 20 ℃/s to 120 ℃ to obtain the low-temperature-resistant high-strength spring steel;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: stirring 100 parts of graphene and 0.01 part of 1-butyl-3-methylimidazole tetrachloroferrite at 60 ℃ for 1 hour, then adding 35 parts of aluminum honeycomb core and 1 part of fluoroalkyl silyl mica, uniformly stirring, stirring at 80 ℃ for 1 hour, then pressing into blocks at 4MPa, and further crushing into particles to obtain the aluminum honeycomb reinforced ionic liquid graphene.
The top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
The trapezoidal side plate is fixedly connected to the bridge support.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 644MPa, and the impact absorption power value at minus 60 ℃ is 26.4J.
Example 3
A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a miniature sliding block and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes, the miniature sliding block is fixed in the guide groove, one end of a connecting rod is fixedly connected with the miniature sliding block, and the other end of the connecting rod is fixedly connected with the bottom of the outer wall of the damping block; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength piezoelectric spring steel.
The low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.07% of carbon, 0.31% of silicon, 1.5% of manganese, 4.5% of nickel, 0.12% of niobium, 0.06% of zinc, 0.08% of titanium and 0.025% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding 3 parts by weight of aluminum honeycomb enhanced ionic liquid graphene and 100 parts by weight of molten iron, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, billet treatment, namely heating the billet to 1200 ℃, carrying out descaling operation after heat preservation for 50min, wherein the surface temperature of the descaled billet is 1050 ℃; then rough rolling is carried out, the temperature of a rough rolling recrystallization zone is 1100 ℃, and finally the pressing rate is more than 10%; in the finish rolling process, the rolling temperature is 805 ℃, the rolling is carried out for 20 times, and the cumulative reduction rate is 80 percent; finally, cooling at the rate of 30 ℃/s to 200 ℃ to obtain the low-temperature-resistant high-strength spring steel;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: stirring 100 parts of graphene and 0.3 part of 1-butyl-3-methylimidazole tetrachloroferrite at 90 ℃ for 4 hours, then adding 55 parts of aluminum honeycomb core and 7 parts of fluoroalkyl silyl mica, uniformly stirring, stirring at 120 ℃ for 4 hours, then pressing at 6MPa to form blocks, and further crushing into particles to obtain the aluminum honeycomb reinforced ionic liquid graphene.
The top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
The trapezoidal side plate is fixedly connected to the bridge support.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 667MPa, and the impact absorption power value at-60 ℃ is 29.8J.
Example 4
A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a miniature sliding block and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes, the miniature sliding block is fixed in the guide groove, one end of a connecting rod is fixedly connected with the miniature sliding block, and the other end of the connecting rod is fixedly connected with the bottom of the outer wall of the damping block; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength piezoelectric spring steel.
The low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.02% of carbon, 0.31% of silicon, 0.8% of manganese, 4.5% of nickel, 0.04% of niobium, 0.06% of zinc, 0.02% of titanium and 0.025% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding 100 parts by weight of molten iron and 0.6 part by weight of aluminum honeycomb enhanced ionic liquid graphene, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, billet treatment, namely heating the billet to 1200 ℃, carrying out descaling operation after heat preservation for 30min, and keeping the surface temperature of the descaled billet at 1050 ℃; then rough rolling is carried out, the temperature of a rough rolling recrystallization zone is 980 ℃, and finally the pressing rate is more than 10%; in the finish rolling process, the rolling temperature is 650 ℃, the rolling is carried out for 10 times, and the accumulated reduction rate is 65 percent; finally, cooling at the rate of 20 ℃/s to 200 ℃ to obtain the low-temperature-resistant high-strength spring steel;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: stirring 100 parts of graphene and 0.01 part of 1-butyl-3-methylimidazole tetrachloroferrite at 90 ℃ for 1 hour, then adding 55 parts of aluminum honeycomb core and 1 part of fluoroalkyl silyl mica, uniformly stirring, stirring at 80 ℃ for 4 hours, then pressing at 4MPa into blocks, and further crushing into particles to obtain the aluminum honeycomb reinforced ionic liquid graphene.
The top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
The trapezoidal side plate is fixedly connected to the bridge support.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 652Pa, and the impact absorption power value at-60 ℃ is 28.4J.
Comparative example 1
The procedure of example 1 was repeated except that the aluminum honeycomb-reinforced ionic liquid graphene was not added.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 564MPa, and the impact absorption power value at-60 ℃ is 17.7J.
Comparative example 2
Example 1 was followed without the addition of tris 1-butyl-3-methylimidazolium tetrachloroferrite.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 578MPa, and the impact absorption work value at minus 60 ℃ is 19.8J.
Comparative example 3
The procedure of example 1 was repeated except that no aluminum honeycomb core was added.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 589MPa, and the impact absorption power value at minus 60 ℃ is 18.4J.
Comparative example 4
The procedure of example 1 was repeated except that no fluoroalkylsilyl mica was added.
The tensile strength of the low-temperature-resistant high-strength spring steel used in the experiment is 612MPa, and the impact absorption power value at minus 60 ℃ is 21.4J.
Claims (5)
1. A bridge damping support using graphene materials comprises a sliding box and two trapezoidal side plates, wherein a bridge support is arranged in the sliding box, an arc-shaped clamping groove is formed in the top end of the bridge support, support top plates are arranged at two ends of the top of the bridge support, extension parts are arranged on the support top plates, and the extension parts are connected with a bridge body; the damping device is arranged between the extension part and the sliding box; the damping device comprises a damping spring, a damping ball, a damping block, a miniature sliding block and a damping cover, wherein the damping cover and the damping block are divided into three damping chambers by two fixedly arranged center holes; the damping spring is characterized in that the damping spring is made of low-temperature-resistant high-strength piezoelectric spring steel;
the low-temperature-resistant high-strength piezoelectric spring steel is refined by adopting aluminum honeycomb enhanced ionic liquid graphene outside a furnace to carry out molten iron refining;
the preparation method of the aluminum honeycomb reinforced ionic liquid graphene comprises the following steps: according to the weight portion, 100 portions of graphene and 0.01 to 0.3 portion of 1-butyl-3-methylimidazol tetrachloroferrite are stirred for 1 to 4 hours at the temperature of 60 to 90 ℃, then 35 to 55 portions of aluminum honeycomb core and 1 to 7 portions of fluoroalkyl silyl mica are added and stirred uniformly, the mixture is stirred for 1 to 4 hours at the temperature of 80 to 120 ℃, then the mixture is pressed into blocks at the pressure of 4 to 6MPa, and the blocks are further crushed into particles, so that the aluminum honeycomb reinforced ionic liquid graphene is obtained.
2. The bridge damping support using the graphene material according to claim 1, wherein: the low-temperature-resistant high-strength piezoelectric spring steel is prepared according to the following scheme:
preparing molten iron, wherein the molten iron contains 0.02% -0.07% of carbon, 0.08% -0.31% of silicon, 0.8% -1.5% of manganese, 2.5% -4.5% of nickel, 0.04% -0.12% of niobium, 0.03% -0.06% of zinc, 0.02% -0.08% of titanium and 0.015% -0.025% of zirconium; and carrying out desulfurization and deoxidation treatment, wherein the sulfur content is not more than 0.002 percent and the phosphorus content is not more than 0.007 percent after treatment;
step two, molten iron refining, namely adopting aluminum honeycomb enhanced ionic liquid graphene for external refining, adding the aluminum honeycomb enhanced ionic liquid graphene in an amount of 100 parts by weight of molten iron and 0.1-3 parts by weight of aluminum honeycomb enhanced ionic liquid graphene, stirring slag surfaces to promote the aluminum honeycomb enhanced ionic liquid graphene in the molten steel to spread, quickly combining with slag to form a target slag system, adsorbing harmful impurities in steel, and casting into a steel billet;
step three, steel billet treatment, namely heating the steel billet to 1100-; then rough rolling is carried out, the temperature of a rough rolling recrystallization zone is 980-; in the finish rolling process, the rolling temperature is 650-805 ℃, the rolling is carried out for 10-20 times, and the accumulated reduction rate is 65-80%; and finally, cooling at the rate of 20-30 ℃/s to 120-200 ℃ to obtain the low-temperature-resistant high-strength piezoelectric spring steel.
3. The bridge damping support using the graphene material according to claim 1, wherein: the top wall of the support is fixedly connected with a connecting mechanism, and the connecting mechanism is indirectly connected with the bridge body through a damping device.
4. The bridge damping support using the graphene material according to claim 1, wherein: the trapezoidal side plate is fixedly connected to the bridge support.
5. The bridge damping support using the graphene material according to claim 1, wherein: the 1-butyl-3-methylimidazole tetrachloroferrite modified ionic liquid graphene and molten iron are uniformly mixed and are not easy to delaminate.
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