CN105821262A - Sliding alloy material and alloy sliding structural component special for support and manufacturing method of alloy sliding structural component - Google Patents
Sliding alloy material and alloy sliding structural component special for support and manufacturing method of alloy sliding structural component Download PDFInfo
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- CN105821262A CN105821262A CN201610181748.5A CN201610181748A CN105821262A CN 105821262 A CN105821262 A CN 105821262A CN 201610181748 A CN201610181748 A CN 201610181748A CN 105821262 A CN105821262 A CN 105821262A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/043—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention provides a sliding alloy material and an alloy sliding structural component special for a support and a manufacturing method of the alloy sliding structural component. The total weight of the alloy material is adopted as a standard, and the alloy material is prepared from 0.9%-1.5% of silicon, not larger than 0.50% of iron, not larger than 0.10% of copper, 0.60%-1.1% of manganese, 0.8%-1.3% of magnesium, not larger than 0.25% of chromium, not larger than 0.20% of zinc, not larger than 0.1% of titanium and the balance aluminum. The structural component is obtained by carrying out thermal treatment, stretching stress removal, two-stage aging, sliding face constant linear speed rolling treatment and the like on the alloy material prepared from the above specific components. The structural component is integrated, the mechanical property, the mechanical performance, the wear resistance, the sliding face roughness and the corrosion resistance of the structural component and the coefficient of sliding friction with a polytetrafluoroethylene sliding plate or a modified ultra high molecular weight polyethylene sliding plate or the like are all superior to those in the national relevant technology standard requirements, the yield strength of the structural component is 280 MPa or above, and the sliding face roughness Ra is 1.0 micrometer or below.
Description
Technical field
The invention belongs to technical field of alloy material, be specifically related to a kind of bearing special slip alloy material, bearing special
Alloy slide construction part and manufacture method thereof, this alloy slide construction part may be used for the bearing in the field such as bridge and building
In.
Background technology
Slide construction part in bearing, such as spherical bearing slide construction part (i.e. intermediate plate or spherical crown liner plate), has at present
Three kinds: one, reach antiseptical purpose at one layer of chromium of carbon steel sphere plated surface.Ensure that surface is thick by polishing chromium coating
Rugosity Ra < 1.6 μm.Whole intermediate plate is " non-integral parts ".Chromium coating needs polishing, easily goes out at edge carbon steel
Showing the most exposed and cause parts anticorrosion to lose efficacy, the chromium coating after polishing is substantially all the skill not reaching thickness more than 100 μm
Art requirement, cost is high, needs third party's chromium plating, pollutes environment.This scheme is eliminated the most substantially.Two, at carbon
Steel ball bread wraps up in mirror face stainless steel, is welded to connect with carbon steel seam.Mirror face stainless steel plate roughness Ra < 0.8 μm.
Whole spherical crown liner plate is " non-integral parts ", in use, owing to rustless steel yield strength is relatively low, easily plays drum,
Can cause rotating the problems such as dumb.Additionally, at the soldering opening of carbon steel Yu corrosion resistant plate, welding material can produce chemistry
And electrochemical corrosion, welding rod quality welder's level etc. is because have the risk causing sealing-off, thus causes structural member anticorrosion to be lost
Effect.Three, Europe bearing standard EN1337-2 includes the aluminum alloy materials related content as slide construction part: aluminum
Alloy Al-Mg6M or Al-Si7MgTF surface anode electroplating aluminum coating, whole spherical crown liner plate is non-integral parts, logical
Cross polishing oxide-film to ensure that surface roughness meets the requirements.Due to material composition problem and there is no appropriate heat treatment work
Skill and stretching destressing problem, cause aluminium alloy slide construction part intensity low and the problem such as wear no resistance.Meanwhile, plating
Pull-up falls to causing etching problem, and coating process pollutes environment, is unsuitable for promoting the use of.Also due to above-mentioned various reasons,
This aluminium alloy slide construction part does not has technical standard and application at China.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of bearing special slip alloy material, one
Bearing special metals slide construction part and manufacture method thereof.The bearing special metals slide construction part that the present invention provides is one
The structural member of body, has preferable mechanical property, mechanical performance, wearability, sliding surface roughness and corrosion resistance etc.
Performance.
For reaching above-mentioned purpose, present invention firstly provides a kind of bearing special slip alloy material, special with described bearing
On the basis of gross weight with slip alloy material, its one-tenth is grouped into and includes: silicon 0.9-1.5%, ferrum≤0.50%, copper≤
0.10%, manganese 0.60-1.1%, magnesium 0.8-1.3%, chromium≤0.25%, zinc≤0.20%, titanium≤0.1% and aluminum surplus.
The alloy material that the present invention provides is by adding the compositions such as silicon, chromium, zinc, manganese, magnesium, titanium and excellent in aluminum
Change the ratio of each composition, it is possible to increase the mechanical strength of alloy structure part for preparing with this alloy material, machining
The performance such as performance and corrosion resistance.
Detailed description of the invention according to the present invention, it is preferable that above-mentioned bearing special slip alloy material can be by following
Step manufacture obtains: is grouped into according to one-tenth and chooses and weigh raw material, then carries out melting, refine and casting, preparation
Obtain ingot casting, be described bearing special slip alloy material.
Detailed description of the invention according to the present invention, it is preferable that in above-mentioned manufacturing step, is grouped into according to one-tenth and chooses also
Weigh raw material be grouped into according to one-tenth choose and weigh fine aluminium block, ferro-aluminum block, aluminum bronze block, aluminum manganese block, magnalium block,
Aluminum chromium block, aluminum spelter and aluminum titanium block, and these metal derbies or alloy block can be the ingot casting of fritter.
Detailed description of the invention according to the present invention, it is preferable that in above-mentioned manufacturing step, the step of described melting includes:
After choosing and weigh, raw material carries out melting at 740-760 DEG C, obtains molten aluminium alloy.The present invention is for melting
Time or speed do not limit, and those skilled in the art can carry out the tune of routine according to the difference of the smelting furnace used
Joint, as long as making the fusing of described raw material uniformly.
Detailed description of the invention according to the present invention, it is preferable that in above-mentioned manufacturing step, the step of described refine includes:
Molten aluminium alloy melting obtained, 735-745 DEG C of refine 10-20 minute, then stands 25-35 at 735-745 DEG C
Minute, obtain the molten aluminium alloy after refine.In the present invention, after melting, molten aluminium alloy can be stirred
So that molten aluminium alloy is more uniformly distributed, (speed and time for stirring do not limit, can be by art technology several times
Personnel carry out the regulation of routine), proceed to standing furnace is carried out refine the most again.Further, described refine can be at nitrogen
Carrying out under atmosphere, the pressure of nitrogen can be 1-2 normal atmospheric pressure, and nitrogen can be used to enter when refine
Row dusts (i.e. spraying into refining agent), can form protective layer on the surface of alloy, prevent alloy oxidation after dusting.Spray
Powder used by powder can be refining agent commonly used in the art, and the usage amount of this refining agent can be to carry out refine
The 1-2% of molten aluminium alloy gross weight.And stop when standing spraying into nitrogen and refining agent.It is to say, it is described
The step of refine may include that the molten aluminium alloy that melting is obtained 735-745 DEG C of refine 10-20 minute, in essence
Spraying into nitrogen and refining agent during refining, the pressure of nitrogen is 1-2 atmospheric pressure, and the usage amount of refining agent is to carry out refine
The 1-2% of molten aluminium alloy gross weight, then stops spraying into nitrogen and refining agent, and stands 25-35 at 735-745 DEG C
Minute, obtain the molten aluminium alloy after refine.
Detailed description of the invention according to the present invention, it is preferable that in above-mentioned manufacturing step, after refine, can be right
The molten aluminium alloy that refine obtains filters, and to remove oxide in melt, slag inclusion etc., casts the most again.
Additionally, in the present invention, described casting can use the casting technique that this area is conventional.Further, the present invention is for casting
The specification making the ingot casting obtained is not specially limited, and can carry out routine according to the size of structural member product to be produced
Adjust.
Additionally, present invention also provides a kind of bearing special metals slide construction part, it is to use above-mentioned bearing special
Slip alloy material (the most above-mentioned ingot casting) by homogenizing annealing, hot rolling, quench, stretch, timeliness, finish turning and
The process step and manufacturing of Constant Linear Velocity rolling obtains.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described homogenizing annealing includes: by upper
The bearing special slip alloy material (the most above-mentioned ingot casting) stated carries out homogenization in 8-10 hour 555-565 DEG C of insulation
Annealing, obtains the ingot casting after homogenizing annealing processes.This homogenizing annealing processes and can use at hot in off-line stove
Reason mode, can be carried out in heat-treatment furnace (such as roller hearth furnace).The deformation of the alloy material that the application uses resists
Power is big, and bearing special metals slide construction part requires height for its mechanical performance index, moves back using above-mentioned homogenization
After fire processes, there is following change in alloy structure: (1) microsegregation disappears；(2)Mg2Si phase is dissolved in α (Al),
Uneven eutectic disappears；(3)β(Al9Fe2Si2) α (Al in opposite directions12Fe3Si2) phase in version, and refine Copper component particle, because of
And make to manufacture the structural member obtained and there is preferable mechanical property.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described hot rolling includes: homogenization moved back
Ingot casting after fire processes is heated to 500-520 DEG C, then carries out hot rolling (employing hot-rolling mill), and the temperature of roll is
20-30 DEG C, gloss level of roll be below 12.5 μm, mill speed be more than 1m/s, roll-force be less than 800 tons,
Rolling pass be 15-20 passage, total reduction be more than 10%, obtain hot rolled plate.Wherein, by homogenizing annealing
Ingot casting after process is heated to 500-520 DEG C, can use the electric furnace, the advantage of this mode of heating to be: (1)
Heat time heating time is short；(2) temperature precise control, error is less than ± 3 DEG C.It is highly preferred that after carrying out above-mentioned hot rolling
To the specification of hot rolled plate be thickness 30-250mm, below width 2.5m, length below 5m.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described quenching includes: will obtain after hot rolling
To hot rolled plate be heated to 500-540 DEG C, then make with the Water spray of gait of march 10-30 DEG C of 8-12cm/s
The temperature of sheet material drops to less than 50 DEG C, the sheet material after being quenched.The quenching sensitive of the alloy material of the application is high,
Its hot rolled plate is heated to 500-540 DEG C carry out cure process after quench again, it is possible to make the structure that manufacture obtains
Part has preferable mechanical performance.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described stretching includes: after quenching
Sheet material carries out stretching (drawing die can be used to stretch) under conditions of stretching pass deformation rate is 1-1.5%,
Sheet material to go de-stress, after being stretched.It is highly preferred that stretch in 3 hours after quenching.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described timeliness includes: after stretching
Sheet material is incubated 5 ± 0.5 hours at 170-180 DEG C, is incubated 5 ± 0.5 hours at 170-180 DEG C the most again, carries out twin-stage
Ageing Treatment, obtains the sheet material after Ageing Treatment.By above-mentioned homogenizing annealing heat treatment, stretch processing, twin-stage
The steps such as Ageing Treatment, it is possible to increase the mechanical performance of sheet alloy, machinability and corrosion resistance.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described finish turning includes: by Ageing Treatment
After sheet material carry out finish turning, obtain the section bar after finish turning, and to make described section bar be ball-crown body section bar, described ball-crown body
The radius of curvature of section bar is below 10m, a diameter of below 5m, and the surrounding of the circular flat of described ball-crown body section bar
Leave the allowance of thickness 5-10mm.
In above-mentioned bearing special metals slide construction part, it is preferable that the step of described Constant Linear Velocity rolling includes: will
The curved surface (i.e. sliding surface) of the ball-crown body section bar after finish turning carries out Constant Linear Velocity rolling and (rolling depression cutter can be used to carry out
Linear velocity roll), and control Constant Linear Velocity rolling the magnitude of interference be 0.2-0.5mm, rolling speed be 700-900 turn/min,
The amount of feeding is 0.02-0.05mm, and the roughness Ra making the curved surface after rolling is below 1.0 μm, obtains bearing special
Alloy slide construction part.Curved surface after Constant Linear Velocity rolling presents " stainless steel ", and surface color is equal with mechanical property
Essentially identical with mirror face stainless steel, this Constant Linear Velocity rolling technology is closed and hardens Curved surface metal layer, reduces surface
Roughness, improves case hardness, wearability, corrosion resistance and anti-fatigue performance.
Detailed description of the invention according to the present invention, it is preferable that the bearing special metals slide construction part that the present invention provides
Yield strength is more than 280MPa, the roughness Ra of the sliding surface (i.e. the curved surface of ball-crown body section bar) of this structural member
It is below 1.0 μm.
On the other hand, present invention also offers the manufacture method of a kind of bearing special metals slide construction part, it can be
The manufacture method of above-mentioned bearing special metals slide construction part, the method comprises the following steps:
(1) dispensing: by weight percentage, according to silicon 0.9-1.5%, ferrum≤0.50%, copper≤0.10%, manganese
The one-tenth of 0.60-1.1%, magnesium 0.8-1.3%, chromium≤0.25%, zinc≤0.20%, titanium≤0.1% and aluminum surplus is grouped into
Choose and weigh raw material；
(2) melting: the raw material after choosing and weigh carries out melting at 740-760 DEG C, obtains molten aluminium alloy；
(3) refine: molten aluminium alloy melting obtained, 735-745 DEG C of refine 10-20 minute, then exists
735-745 DEG C stands 25-35 minute, obtains the molten aluminium alloy after refine；
(4) casting: by the molten aluminium alloy casting after refine, obtain ingot casting；
(5) homogenizing annealing: ingot casting is carried out homogenizing annealing process in 8-10 hour 555-565 DEG C of insulation,
Ingot casting after processing to homogenizing annealing；
(6) hot rolling: the ingot casting after being processed by homogenizing annealing is heated to 500-520 DEG C, then carries out hot rolling and (uses
Hot-rolling mill), and the temperature controlling roll be 20-30 DEG C, gloss level of roll be below 12.5 μm, mill speed be 1m/s
Above, roll-force be less than 800 tons, rolling pass be 15-20 passage, total reduction be more than 10%, obtain heat
Rolling sheets；
(7) quenching: hot rolled plate is heated to 500-540 DEG C, then with the gait of march of 8-12cm/s with 10-30 DEG C
Water spray make the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched；
(8) stretching: carrying out stretching under conditions of stretching pass deformation rate is 1-1.5% by the sheet material after quenching (can
To use drawing die to stretch), the sheet material to go de-stress, after being stretched；
(9) timeliness: the sheet material after stretching is incubated 5 ± 0.5 hours at 170-180 DEG C, the most again at 170-180 DEG C
It is incubated 5 ± 0.5 hours, carries out two-stage time effect process, obtain the sheet material after Ageing Treatment；
(10) finish turning: the sheet material after Ageing Treatment is carried out finish turning, obtains the section bar after finish turning, and makes described type
Material is ball-crown body section bar, and the radius of curvature of described ball-crown body section bar is below 10m, a diameter of below 5m, and described
The surrounding of the circular flat of ball-crown body section bar leaves the allowance of thickness 5-10mm；
(11) Constant Linear Velocity rolling: the curved surface (i.e. sliding surface) of the ball-crown body section bar obtained by finish turning carries out waiting linear speed
Degree rolling (rolling depression cutter can be used to carry out Constant Linear Velocity rolling), and control Constant Linear Velocity rolling the magnitude of interference be
0.2-0.5mm, rolling speed be 700-900 turn/min, the amount of feeding is 0.02-0.05mm, after making Constant Linear Velocity rolling
The roughness Ra of curved surface be below 1.0 μm, obtain described bearing special metals slide construction part.
In above-mentioned manufacture method, it is preferable that the raw material chosen and weigh include fine aluminium block, ferro-aluminum block, aluminum bronze block,
Aluminum manganese block, magnalium block, aluminum chromium block, aluminum spelter and aluminum titanium block, and these metal derbies or alloy block can be fritter
Ingot casting.
In above-mentioned manufacture method, the time for melting or the speed of the present invention do not limit, those skilled in the art
The regulation of routine can be carried out, as long as making the fusing of described raw material uniformly according to the difference of the smelting furnace used.
In above-mentioned manufacture method, after melting, can to molten aluminium alloy stirring several times so that molten aluminium alloy more
For uniformly (speed and time for stirring do not limit, and can be carried out the regulation of routine by those skilled in the art),
Proceed to standing furnace is carried out refine the most again.Further, described refine can be carried out in a nitrogen atmosphere, the pressure of nitrogen
Can be 1-2 normal atmospheric pressure, and nitrogen can be used when refine to carry out dust (spraying into refining agent),
Protective layer can be formed on the surface of alloy after dusting, prevent alloy oxidation.The powder used that dusts can be this area
Conventional use of refining agent, the usage amount of this refining agent can be the 1-2% of the molten aluminium alloy gross weight carrying out refine.
And stop when standing spraying into nitrogen and refining agent.It is to say, the step of described refine may include that melting
The molten aluminium alloy obtained, 735-745 DEG C of refine 10-20 minute, sprays into nitrogen and refining agent, nitrogen when refine
Pressure be 1-2 atmospheric pressure, the usage amount of refining agent is the 1-2% of the molten aluminium alloy gross weight carrying out refine,
Then stop spraying into nitrogen and refining agent, and stand 25-35 minute at 735-745 DEG C, obtain the aluminium alloy after refine
Liquation.
In above-mentioned manufacture method, after refine, the molten aluminium alloy that can obtain refine filters, to remove
Remove the oxide in melt, slag inclusion etc., cast the most again.Additionally, in the present invention, described casting can be adopted
By the conventional casting technique in this area.Further, the present invention is not specially limited for the specification of the ingot casting that casting obtains,
Conventional adjustment can be carried out according to the size of structural member product to be produced.
In above-mentioned manufacture method, described homogenizing annealing processes can use heat treatment mode in off-line stove, permissible
Heat-treatment furnace (such as roller hearth furnace) is carried out.
In above-mentioned manufacture method, it is preferable that by homogenizing annealing process after ingot casting be heated to 500-520 DEG C permissible
Use electric furnace.
In above-mentioned manufacture method, it is preferable that the specification of described hot rolled plate is thickness 30-250mm, width 2.5m
Hereinafter, below length 5m.
In above-mentioned manufacture method, it is preferable that stretch in 3 hours after quenching.
The invention provides a kind of bearing special slip alloy material (trade mark: ZHH-T651), a kind of special conjunction of bearing
Gold slide construction part and manufacture method thereof.The bearing special metals slide construction part that the present invention provides uses has specific one-tenth
The alloy material being grouped into goes de-stress, two-stage time effect and sliding surface Constant Linear Velocity rolling to process through Overheating Treatment, stretching
Obtain etc. step manufacture, the structural member (i.e. identical material integral structure component) that this structural member is integrated, its mechanical property,
Mechanical performance, wearability, sliding surface roughness, corrosion resistance, and with politef slide plate or modified ultra-high molecular
The coefficient of sliding friction of weight polyethylene sliding plate etc., is superior to country's Its Relevant Technology Standards requirement.The bearing that the present invention provides
The yield strength of special metals slide construction part is more than 280MPa, sliding surface (the i.e. ball-crown body section bar of this structural member
Curved surface) roughness Ra be below 1.0 μm, it has the performances such as higher intensity, toughness and corrosion resistance.
The present invention solves long-standing problem bearing sliding structural member and is not integrated and the series of problems such as the most corrosion-resistant, this
Bright chromium coating scheme, parcel corrosion resistant plate scheme and aluminium alloy anode oxide layered scheme these three scheme congenital are evaded
Deficiency and the security hidden trouble day after tomorrow, advanced technology, use safety, and corrosion resistance highlights, and service life is up to 50
More than Nian, cost is only slightly above three currently used schemes, has higher economic benefit and social benefit, and
There is not problem of environmental pollution.The bearing special metals slide construction part that the present invention provides can be put in atmosphere, contain
Chlorine, fluorine industrial environment in and sea water in use, and be suitable as in all kinds of bearings such as railway, highway and house with
Polyfluortetraethylene plate is or/and the slide construction part to mill such as ultra-high molecular weight polyethylene board, and therefore, this bearing sliding is tied
Component is with a wide range of applications.
Accompanying drawing explanation
The structural representation of the bearing special metals slide construction part of the offer that Fig. 1 is the present invention.
Detailed description of the invention
In order to the technical characteristic of the present invention, purpose and beneficial effect are more clearly understood from, the existing skill to the present invention
Art scheme carries out described further below, but it is not intended that to the present invention can the restriction of practical range.
Embodiment 1
Present embodiments providing a kind of bearing special metals slide construction part, it obtains according to following steps manufacture:
(1) dispensing: by weight percentage, according to silicon 0.9%, ferrum 0.50%, copper 0.10%, manganese 0.6%, magnesium
0.8%, the one-tenth of chromium 0.25%, zinc 0.20%, titanium 0.1% and aluminum surplus be grouped into choose and weigh fritter fine aluminium block,
Ferro-aluminum block, aluminum bronze block, aluminum manganese block, magnalium block, aluminum chromium block, aluminum spelter and aluminum titanium block；
(2) melting: the raw material after choosing and weigh is sent in smelting furnace and carried out melting at 740 DEG C, obtains aluminum
Alloy molten solution, afterwards, stirs more than twice molten aluminium alloy so that molten aluminium alloy is more uniformly distributed (for stirring
Speed and time do not limit, and can be carried out the regulation of routine by those skilled in the art)；
(3) refine: molten aluminium alloy melting obtained proceeds in standing furnace, uses nitrogen to spray into refining agent,
Refine 15 minutes under 735 DEG C and nitrogen atmosphere, the pressure of nitrogen is 1.5 normal atmospheric pressures, stops spraying into nitrogen
Gas and refining agent, then stand 30 minutes at 735 DEG C, obtain the molten aluminium alloy after refine；
Wherein, the refining agent used is the JLAJ1 that Chengdu Curie's metallurgical material company limited produces；This refining agent
Usage amount is proceed to the molten aluminium alloy gross weight carrying out refine in standing furnace 1%；
After refine, the molten aluminium alloy obtaining refine filters (such as can be at standing furnace fire door and mold
Between defecator is set), to remove oxide in melt, slag inclusion etc., cast the most again；
(4) casting: by the molten aluminium alloy casting after refine, obtain ingot casting；
(5) homogenizing annealing: proceed to ingot casting carry out homogenizing annealing in 9 hours 555 DEG C of insulations in roller hearth furnace
Process, obtain the ingot casting after homogenizing annealing processes；
(6) hot rolling: the ingot casting after using electric furnace to be processed by homogenizing annealing is heated to 500 DEG C, then uses
Hot-rolling mill carries out hot rolling, and the temperature controlling roll be 23 DEG C, gloss level of roll be 10 μm, mill speed be 1m/s,
Roll-force is 700 tons, rolling pass is 18 passages, total reduction is 45%, obtains hot rolled plate, this hot rolled plate
The specification of material is thickness 50mm, width 2.5m, length 5m；
(7) quenching: hot rolled plate is heated to 540 DEG C, then sprays with the water of 15 DEG C with the gait of march of 10cm/s
Drenching makes the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched；
(8) stretching: after quenching in 3 hours, the sheet material after quenching is the condition of 1% at stretching pass deformation rate
Under carry out stretching (drawing die can be used to stretch), the sheet material to go de-stress, after being stretched；
(9) timeliness: the sheet material after stretching is incubated 5 hours at 170 DEG C, is incubated 5 hours at 170 DEG C the most again,
Carry out two-stage time effect process, obtain the sheet material after Ageing Treatment；
(10) finish turning: the sheet material after Ageing Treatment is carried out finish turning, obtains the section bar after finish turning, and makes described type
Material is ball-crown body section bar, and the radius of curvature of described ball-crown body section bar is 0.7m, a diameter of 0.4m, and described ball-crown body
The surrounding of the circular flat of section bar leaves the allowance of thickness 5mm；
(11) Constant Linear Velocity rolling: the curved surface (i.e. sliding surface) of the ball-crown body section bar obtained by finish turning carries out waiting linear speed
Degree rolling (rolling depression cutter can be used to carry out Constant Linear Velocity rolling), and control Constant Linear Velocity rolling the magnitude of interference be 0.3mm,
Rolling speed is 700 turns/min, the amount of feeding is 0.02mm, makes the roughness Ra of the curved surface after Constant Linear Velocity rolling
Being below 1.0 μm, obtain described bearing special metals slide construction part, the structure of this structural member is as shown in Figure 1.
After tested, the yield strength of this bearing special metals slide construction part is 280MPa, the roughness Ra of sliding surface
It it is 0.8 μm.Use this bearing special metals slide construction part and modified ultra-high molecular weight polyethylene slide plate at 45MPa
Pressure, the sliding speed of 15mm/s and lubrication under conditions of carry out frictional experiment, result is: this modification superelevation
The wear rate of molecular weight polyethylene slide plate is not more than 15 μm/km.This bearing special metals slide construction part is used to carry out
1000 hours standard salt mist experiments, result is: this structural member corrosion-free (N level).Use this bearing special metals sliding
Dynamic structural member is applied in the bearing that design load is 5000kN, after carrying out 2,000,000 pressure fatigue, and this structure
Part stands intact.
Embodiment 2
Present embodiments providing a kind of bearing special metals slide construction part, it obtains according to following steps manufacture:
(1) dispensing: by weight percentage, according to silicon 1.5%, ferrum 0.30%, copper 0.08%, manganese 1.1%, magnesium
1.3%, the one-tenth of chromium 0.2%, zinc 0.15%, titanium 0.08% and aluminum surplus be grouped into choose and weigh fritter fine aluminium block,
Ferro-aluminum block, aluminum bronze block, aluminum manganese block, magnalium block, aluminum chromium block, aluminum spelter and aluminum titanium block；
(2) melting: the raw material after choosing and weigh is sent in smelting furnace and carried out melting at 760 DEG C, obtains aluminum
Alloy molten solution, afterwards, stirs more than twice molten aluminium alloy so that molten aluminium alloy is more uniformly distributed (for stirring
Speed and time do not limit, and can be carried out the regulation of routine by those skilled in the art)；
(3) refine: molten aluminium alloy melting obtained proceeds in standing furnace, uses nitrogen to spray into refining agent,
Refine 10 minutes under 745 DEG C and nitrogen atmosphere, the pressure of nitrogen is 2 normal atmospheric pressures, stops spraying into nitrogen
And refining agent, then stand 25 minutes at 745 DEG C, obtain the molten aluminium alloy after refine；
Wherein, the refining agent used is the JLAJ1 that Chengdu Curie's metallurgical material company limited produces；This refining agent
Usage amount is proceed to the molten aluminium alloy gross weight carrying out refine in standing furnace 1.5%；
After refine, the molten aluminium alloy obtaining refine filters (such as can be at standing furnace fire door and mold
Between defecator is set), to remove oxide in melt, slag inclusion etc., cast the most again；
(4) casting: by the molten aluminium alloy casting after refine, obtain ingot casting；
(5) homogenizing annealing: proceed to ingot casting carry out homogenizing annealing in 8 hours 565 DEG C of insulations in roller hearth furnace
Process, obtain the ingot casting after homogenizing annealing processes；
(6) hot rolling: the ingot casting after using electric furnace to be processed by homogenizing annealing is heated to 510 DEG C, then uses
Hot-rolling mill carries out hot rolling, and the temperature controlling roll be 27 DEG C, gloss level of roll be 12 μm, mill speed be 1.5m/s,
Roll-force is 750 tons, rolling pass is 16 passages, total reduction is 40%, obtains hot rolled plate, this hot rolled plate
The specification of material is thickness 150mm, width 2m, length 3m；
(7) quenching: hot rolled plate is heated to 510 DEG C, then sprays with the water of 10 DEG C with the gait of march of 8cm/s
Drenching makes the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched；
(8) stretching: after quenching in 3 hours, the sheet material after quenching is the bar of 1.5% at stretching pass deformation rate
Carry out under part stretching (drawing die can be used to stretch), the sheet material to go de-stress, after being stretched；
(9) timeliness: at 175 DEG C, the sheet material after stretching is incubated 4.5 hours is little 175 DEG C of insulations 4.5 the most again
Time, carry out two-stage time effect process, obtain the sheet material after Ageing Treatment；
(10) finish turning: the sheet material after Ageing Treatment is carried out finish turning, obtains the section bar after finish turning, and makes described type
Material is ball-crown body section bar, and the radius of curvature of described ball-crown body section bar is 9m, a diameter of 3m, and described ball-crown body section bar
The surrounding of circular flat leave the allowance of thickness 7mm；
(11) Constant Linear Velocity rolling: the curved surface (i.e. sliding surface) of the ball-crown body section bar obtained by finish turning carries out waiting linear speed
Degree rolling (rolling depression cutter can be used to carry out Constant Linear Velocity rolling), and control Constant Linear Velocity rolling the magnitude of interference be 0.2mm,
Rolling speed is 900 turns/min, the amount of feeding is 0.05mm, makes the roughness Ra of the curved surface after Constant Linear Velocity rolling
Being below 1.0 μm, obtain described bearing special metals slide construction part, the structure of this structural member is as shown in Figure 1.
After tested, the yield strength of this bearing special metals slide construction part is 290MPa, the roughness Ra of sliding surface
It it is 0.9 μm.
Embodiment 3
Present embodiments providing a kind of bearing special metals slide construction part, it obtains according to following steps manufacture:
(1) dispensing: by weight percentage, according to silicon 1.2%, ferrum 0.3%, copper 0.06%, manganese 0.8%, magnesium
1.0%, the one-tenth of chromium 0.15%, zinc 0.1%, titanium 0.07% and aluminum surplus be grouped into choose and weigh fritter fine aluminium block,
Ferro-aluminum block, aluminum bronze block, aluminum manganese block, magnalium block, aluminum chromium block, aluminum spelter and aluminum titanium block；
(2) melting: the raw material after choosing and weigh is sent in smelting furnace and carried out melting at 750 DEG C, obtains aluminum
Alloy molten solution, afterwards, stirs more than twice molten aluminium alloy so that molten aluminium alloy is more uniformly distributed (for stirring
Speed and time do not limit, and can be carried out the regulation of routine by those skilled in the art)；
(3) refine: molten aluminium alloy melting obtained proceeds in standing furnace, uses nitrogen to spray into refining agent,
Refine 20 minutes under 740 DEG C and nitrogen atmosphere, the pressure of nitrogen is 1.5 normal atmospheric pressures, stops spraying into nitrogen
Gas and refining agent, then stand 35 minutes at 740 DEG C, obtain the molten aluminium alloy after refine；
Wherein, the refining agent used is the JLAJ1 that Chengdu Curie's metallurgical material company limited produces；This refining agent
Usage amount is proceed to the molten aluminium alloy gross weight carrying out refine in standing furnace 1%；
After refine, the molten aluminium alloy obtaining refine filters (such as can be at standing furnace fire door and mold
Between defecator is set), to remove oxide in melt, slag inclusion etc., cast the most again；
(4) casting: by the molten aluminium alloy casting after refine, obtain ingot casting；
(5) homogenizing annealing: proceed to ingot casting carry out homogenizing annealing in 10 hours 560 DEG C of insulations in roller hearth furnace
Process, obtain the ingot casting after homogenizing annealing processes；
(6) hot rolling: the ingot casting after using electric furnace to be processed by homogenizing annealing is heated to 520 DEG C, then uses
Hot-rolling mill carries out hot rolling, and the temperature controlling roll be 25 DEG C, gloss level of roll be 9 μm, mill speed be 2m/s,
Roll-force is 650 tons, rolling pass is 20 passages, total reduction is 50%, obtains hot rolled plate, this hot rolled plate
The specification of material is thickness 250mm, width 1.5m, length 2.5m；
(7) quenching: hot rolled plate is heated to 530 DEG C, then sprays with the water of 20 DEG C with the gait of march of 12cm/s
Drenching makes the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched；
(8) stretching: after quenching in 3 hours, the sheet material after quenching is the bar of 1.2% at stretching pass deformation rate
Carry out under part stretching (drawing die can be used to stretch), the sheet material to go de-stress, after being stretched；
(9) timeliness: at 180 DEG C, the sheet material after stretching is incubated 5.5 hours is little 180 DEG C of insulations 5.5 the most again
Time, carry out two-stage time effect process, obtain the sheet material after Ageing Treatment；
(10) finish turning: the sheet material after Ageing Treatment is carried out finish turning, obtains the section bar after finish turning, and makes described type
Material is ball-crown body section bar, and the radius of curvature of described ball-crown body section bar is 10m, a diameter of 5m, and described spherical crown build
The surrounding of the circular flat of material leaves the allowance of thickness 10mm；
(11) Constant Linear Velocity rolling: the curved surface (i.e. sliding surface) of the ball-crown body section bar obtained by finish turning carries out waiting linear speed
Degree rolling (rolling depression cutter can be used to carry out Constant Linear Velocity rolling), and control Constant Linear Velocity rolling the magnitude of interference be 0.4mm,
Rolling speed is 800 turns/min, the amount of feeding is 0.03mm, make the roughness Ra of the curved surface after rolling be 1.0 μm with
Under, obtaining described bearing special metals slide construction part, the structure of this structural member is as shown in Figure 1.
After tested, the yield strength of this bearing special metals slide construction part is 300MPa, the roughness Ra of sliding surface
It it is 0.8 μm.
Claims (10)
1. a bearing special slip alloy material, on the basis of the gross weight of described bearing special slip alloy material,
Its one-tenth is grouped into and includes: silicon 0.9-1.5%, ferrum≤0.5%, copper≤0.1%, manganese 0.6-1.1%, magnesium 0.8-1.3%, chromium
≤ 0.25%, zinc≤0.2%, titanium≤0.1% and aluminum surplus.
Bearing the most according to claim 1 special slip alloy material, it is through the following steps that manufacture and obtain
: it is grouped into according to one-tenth and chooses and weigh raw material, then carry out melting, refine and casting, prepare ingot casting,
It is described bearing special slip alloy material；
Wherein, the step of described melting includes: after choosing and weigh, raw material carries out melting at 740-760 DEG C,
To molten aluminium alloy；
The step of described refine includes: the molten aluminium alloy that melting is obtained 735-745 DEG C of refine 10-20 minute,
Then stand 25-35 minute at 735-745 DEG C, obtain the molten aluminium alloy after refine；Preferably, described refine
Step includes: molten aluminium alloy melting obtained, 735-745 DEG C of refine 10-20 minute, sprays into nitrogen when refine
Gas and refining agent, the pressure of nitrogen is 1-2 normal atmospheric pressure, and the usage amount of refining agent is that the aluminum carrying out refine closes
The 1-2% of gold liquation gross weight, then stops spraying into nitrogen and refining agent, and stands 25-35 minute at 735-745 DEG C,
Obtain the molten aluminium alloy after refine.
3. a bearing special metals slide construction part, it is for using the special cunning of bearing described in claim 1 or 2
Dynamic circuit connector gold copper-base alloy by homogenizing annealing, hot rolling, quench, stretch, process that timeliness, finish turning and Constant Linear Velocity roll
Step and manufacturing obtains.
Bearing special metals slide construction part the most according to claim 3, wherein, described homogenizing annealing
Step includes: 555-565 DEG C of insulation, described bearing special slip alloy material is carried out homogenization for 8-10 hour and moves back
Fire processes, and obtains the ingot casting after homogenizing annealing processes；
The step of described hot rolling includes: the ingot casting after being processed by homogenizing annealing is heated to 500-520 DEG C, then carries out
Hot rolling, the temperature of roll is 20-30 DEG C, gloss level of roll is below 12.5 μm, mill speed is more than 1m/s,
Roll-force is less than 800 tons, rolling pass is 15-20 passage, total reduction is more than 10%, obtains hot rolled plate；
Preferably, the specification of described hot rolled plate is thickness 30-250mm, below width 2.5m, length below 5m.
Bearing special metals slide construction part the most according to claim 3, wherein, the step bag of described quenching
Include: the hot rolled plate obtained after hot rolling is heated to 500-540 DEG C, then use with the gait of march of 8-12cm/s
The Water spray of 10-30 DEG C makes the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched.
Bearing special metals slide construction part the most according to claim 3, wherein, the step bag of described stretching
Include: the sheet material after quenching is stretched under conditions of stretching pass deformation rate is 1-1.5%, to go de-stress,
Sheet material after being stretched；Preferably, stretch in 3 hours after quenching.
Bearing special metals slide construction part the most according to claim 3, wherein, the step bag of described timeliness
Include: the sheet material after stretching is incubated 5 ± 0.5 hours at 170-180 DEG C, is incubated 5 ± 0.5 at 170-180 DEG C the most again
Hour, carry out two-stage time effect process, obtain the sheet material after Ageing Treatment.
Bearing special metals slide construction part the most according to claim 3, wherein, the step bag of described finish turning
Include: the sheet material after Ageing Treatment is carried out finish turning, obtain the section bar after finish turning, and to make described section bar be spherical crown build
Material, the radius of curvature of described ball-crown body section bar is below 10m, a diameter of below 5m, and described ball-crown body section bar
The surrounding of circular flat leaves the allowance of thickness 5-10mm；
The step of described Constant Linear Velocity rolling includes: the curved surface of the ball-crown body section bar after finish turning is carried out Constant Linear Velocity rolling
Pressure, and control the Constant Linear Velocity rolling magnitude of interference be 0.2-0.5mm, rolling speed be that 700-900 turns/min, the amount of feeding
For 0.02-0.05mm, the roughness Ra making the curved surface after rolling is below 1.0 μm, obtains bearing special metals sliding
Dynamic structural member.
Bearing special metals slide construction part the most according to claim 3, its yield strength be 280MPa with
On, the roughness Ra of its sliding surface is below 1.0 μm.
10. a manufacture method for bearing special metals slide construction part, it comprises the following steps:
(1) dispensing: by weight percentage, according to silicon 0.9-1.5%, ferrum≤0.50%, copper≤0.10%, manganese
The one-tenth of 0.60-1.1%, magnesium 0.8-1.3%, chromium≤0.25%, zinc≤0.20%, titanium≤0.1% and aluminum surplus is grouped into
Choose and weigh raw material；
(2) melting: the raw material after choosing and weigh carries out melting at 740-760 DEG C, obtains molten aluminium alloy；
(3) refine: molten aluminium alloy melting obtained, 735-745 DEG C of refine 10-20 minute, then exists
735-745 DEG C stands 25-35 minute, obtains the molten aluminium alloy after refine；
(4) casting: by the molten aluminium alloy casting after refine, obtain ingot casting；
(5) homogenizing annealing: ingot casting is carried out homogenizing annealing process in 8-10 hour 555-565 DEG C of insulation,
Ingot casting after processing to homogenizing annealing；
(6) hot rolling: the ingot casting after being processed by homogenizing annealing is heated to 500-520 DEG C, then carries out hot rolling, and controls
The temperature of roll processed is 20-30 DEG C, gloss level of roll is below 12.5 μm, mill speed is more than 1m/s, rolling
Power is less than 800 tons, rolling pass is 15-20 passage, total reduction is more than 10%, obtains hot rolled plate；
(7) quenching: hot rolled plate is heated to 500-540 DEG C, then with the gait of march of 8-12cm/s with 10-30 DEG C
Water spray make the temperature of sheet material drop to less than 50 DEG C, the sheet material after being quenched；
(8) stretching: the sheet material after quenching is stretched under conditions of stretching pass deformation rate is 1-1.5%, with
Go de-stress, the sheet material after being stretched；
(9) timeliness: the sheet material after stretching is incubated 5 ± 0.5 hours at 170-180 DEG C, the most again at 170-180 DEG C
It is incubated 5 ± 0.5 hours, carries out two-stage time effect process, obtain the sheet material after Ageing Treatment；
(10) finish turning: the sheet material after Ageing Treatment is carried out finish turning, obtains the section bar after finish turning, and makes described type
Material is ball-crown body section bar, and the radius of curvature of described ball-crown body section bar is below 10m, a diameter of below 5m, and described
The surrounding of the circular flat of ball-crown body section bar leaves the allowance of thickness 5-10mm；
(11) Constant Linear Velocity rolling: the curved surface of the ball-crown body section bar obtained by finish turning carries out Constant Linear Velocity rolling, and controls
The system rolling magnitude of interference is 0.2-0.5mm, rolling speed be 700-900 turn/min, the amount of feeding is 0.02-0.05mm, make
The roughness Ra of the curved surface after rolling is below 1.0 μm, obtains described bearing special metals slide construction part.
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| CN107761554A (en) * | 2017-10-24 | 2018-03-06 | 镇江市建成电器有限公司 | A kind of high anti-corrosion overall spherical crown liner plate of bridge pad |
| CN107779619A (en) * | 2017-10-24 | 2018-03-09 | 镇江市建成电器有限公司 | A kind of high anti-corrosion overall spherical crown liner plate manufacture method of bridge pad |
| CN108265211A (en) * | 2018-02-09 | 2018-07-10 | 中国铁路设计集团有限公司 | The aluminium alloy of high-wearing feature and its spherical crown being prepared and the spherical crown preparation method |
| CN108951876A (en) * | 2018-08-24 | 2018-12-07 | 张惠奇 | A kind of corrosion resisting alloy spherical bearing |
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