CN109371296A - Anti-twisting is without joint shaft coupling - Google Patents
Anti-twisting is without joint shaft coupling Download PDFInfo
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- CN109371296A CN109371296A CN201811456362.6A CN201811456362A CN109371296A CN 109371296 A CN109371296 A CN 109371296A CN 201811456362 A CN201811456362 A CN 201811456362A CN 109371296 A CN109371296 A CN 109371296A
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- bamboo charcoal
- shaft coupling
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
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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
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1047—Alloys containing non-metals starting from a melt by mixing and casting liquid metal matrix composites
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Powder Metallurgy (AREA)
Abstract
The invention belongs to metal working technical areas, more particularly to anti-twisting without joint shaft coupling, shaft coupling is made of aluminium alloy, aluminium alloy is made of the raw material of following mass percent: soaking silver-colored bamboo charcoal: 0.1-0.5%, Si:0.05-0.15%, Zr:0.1-0.2%, Ni:0.04-0.1%, Co:0.1-0.2%, surplus is Al and impurity, and pass through pre-treatment, it smelts, powder molding processed, the techniques such as finished product carry out shaft coupling preparation, the improvement of hydrogenation is hydrogenated-gone by composition of raw materials and using circulation, not only obtain the granular size of suitable shaft coupling alloy, it can significantly reduce impurity content present in alloy simultaneously.
Description
Technical field
The present invention relates to anti-twisting without joint shaft coupling, belongs to metal material field.
Background technique
Shaft coupling refers to two axis of connection or axis and revolving meber, turns round together in passing movement and dynamic process, normal
In the case of do not disengage a kind of device for yet not changing rotation direction and torque.Sometimes also it is used to prevent as a kind of safety device
It is only coupled parts and bears excessive load, play the role of overload protection, shaft coupling is a kind of common portion in engineering goods
Part.
Shaft coupling is often semi-synthetic by two, respectively with the connection such as key or tight fit, is fastened on two axial ends, then pass through certain mode
Two halves are linked up.And junction will have the lower defect of stress-bearing capability, be easy to cause fracture or bending.
It can be seen that the performance of shaft coupling has been largely fixed the stability and transmission fluency of linkage.And shaft coupling
The shape of device generally can not effectively be changed, and can not extend the service life of shaft coupling, institute from optimizing in shape
It is dedicated to the material optimization of shaft coupling with us, fundamentally increases the Acceptable life of shaft coupling.Aluminium alloy has preferable
Performance.
Aluminium alloy refers to based on aluminium, and a certain amount of addition element is added and controls impurity content and the conjunction that forms
Golden system.Aluminium alloy has both high-intensitive, high rigidity and light-weight advantage, is suitable as structural material.But traditional aluminium alloy
Material composition and smelting process can not preferably promote alloy property.
It is low for conventional alloys hardness, it is not wear-resisting the disadvantages of, publication number 104975221A discloses a kind of train shaft coupling
Manufacturing method, train shaft coupling have corrosion resistance, wearability good, and yield strength is high, and strong shock resistance, service life are grown excellent
Point.However, steel alloy itself is heavier, and intensity and corrosion resistance are unable to satisfy and use in complex environment.
Summary of the invention
In view of the above problems, the present invention provides higher intensity, high hardness and corrosion resistance, anti-twisting and is adapted to
The shaft coupling of complex environment.
To achieve the goals above, the invention adopts the following technical scheme:
Anti-twisting is made without joint shaft coupling, the shaft coupling of aluminium alloy, and the aluminium alloy is by following quality hundred
The raw material composition of point ratio: soak silver-colored bamboo charcoal: 0.1-0.5%, Si:0.05-0.15%, Zr:0.1-0.2%, Ni:0.04-0.1%,
Co:0.1-0.2%, surplus are Al and impurity.
Preferably, the ingredient for soaking silver-colored bamboo charcoal is made of ultra-fine bamboo charcoal, nano-Ag particles, kaolin powder.
Further preferably, 80-90%, the nano-Ag particles that the content of the ultra-fine bamboo charcoal accounts for the silver-colored bamboo charcoal of leaching account for the silver-colored bamboo charcoal of leaching
5-10%, kaolin powder account for the 5-10% for soaking silver-colored bamboo charcoal.
Further preferably, the nano-Ag particles for soaking silver-colored bamboo charcoal are distributed as 10-100 nanometer on ultra-fine bamboo charcoal
Silver/mm2Bamboo charcoal.
The present invention is special to joined the silver-colored bamboo charcoal of leaching in aluminum alloy material, and bamboo charcoal itself can be used as one kind of carbon,
Auxiliary enhancing is carried out to aluminium alloy, and bamboo charcoal itself has good thermally conductive (heat dissipation), high temperature resistant, corrosion-resistant, self-lubricating, chemistry
The a series of advantages such as stability is good, thermal expansion coefficient is low, i.e. aluminium alloy can obtain these advantages by bamboo charcoal itself.But
The mechanical strength of bamboo charcoal itself is lower, and internal with a small amount of stomata, the intensity of aluminium alloy can be reduced, so in the base of bamboo charcoal
On plinth, invention increases auxiliary additives --- and kaolin powder, kaolinic main material are the oxide and group of aluminium, silicon etc.
Object is closed, is the primary raw material for preparing ceramics, is added in bamboo charcoal as additive, can not only fill the internal porosity of bamboo charcoal,
The intensity of bamboo charcoal is promoted, while promoting wear-resisting, the antioxygenic property of alloy, and have the effect of reinforcement.Meanwhile the present invention is also right
Bamboo charcoal carries out soaking silver-colored processing, and since kaolin powder can only be partially filled with bamboo charcoal internal porosity, and filling intensity is weaker, passes through here
The mode of leaching silver carries out stomata filling, increases the compaction rate of bamboo charcoal to greatest extent, and to soak silver-colored bamboo charcoal material promotion and close
The compatible degree of gold.
Moreover, the grain refining effect of Zr element can be enhanced by soaking silver-colored bamboo charcoal, the intuitive embodiment of crystal grain refinement is alloy
The promotion of compactness extent and thermal shock resistance.Shaft coupling not only needs to keep rotating in actual moving process, while the intensity of bar
It is also required to be more than general alloy with toughness, needs exist for the combined reinforced of Co element, form multielement alloy phase structure.
The present invention additionally provides another technical solution while reasonable selection material mixture ratio:
Preparation method of the anti-twisting without joint shaft coupling, includes the following steps:
(1) pre-treatment: being weighed by above-mentioned raw materials, ultra-fine bamboo charcoal is carried out vacuum preheating, then kaolin powder is equal
Even paving is spilt in bamboo charcoal surface, continues to heat and be pressed to form compound bamboo charcoal, then by Nano silver deposition in composite bamboo carbon surface, certainly
It is so so cooling, broken that soak silver-colored bamboo charcoal particle；
(2) it smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, naturally cools to semisolid,
It silver-colored carbon particle will be soaked uniformly spreads and be sprinkled upon semi-solid alloy surface and be pressed into, continue to be heated to alloy to be in a liquid state and being sufficiently mixed, it is cold
But alloy block is obtained；
(3) powder molding processed: alloy block is subjected to circulation hydrogenation-, hydrogenation treatment is gone to form alloy powder, powder is inserted into mould
Shaft coupling semi-finished product are pressed into tool；
(4) finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
The present invention is in the preparation process of shaft coupling, using vacuum-deposited method by deposition of silver in bamboo charcoal surface, then according to
The effect for sufficiently tamping stomata is played inside silver indentation bamboo charcoal by the mode of pressurization, significantly increases and soaks the close of silver-colored bamboo charcoal
Degree, and then the compactness extent of alloy is improved, promote the comprehensive performance of alloy.And the method for using powder metallurgy carries out shaft coupling
Preparation, how to obtain suitable powder diameter, large effect caused to the properties of product of forming and sintering.The present invention is used and is followed
It is hydrogenated-to remove the flouring technology hydrogenated, the granular size of suitable shaft coupling is not only obtained, while can significantly reduce in alloy and existing
Impurity content.The present invention is preferably to alloy block at 650 DEG C, under conditions of 0.5MPa, recycles 5 acquisition partial sizes in 10-
50 μm, O content is lower than the high duty alloy powder of 20 μ g/g lower than 2000 μ g/g, H content, ultimately forms the shaft coupling of good combination property
Device.Integrally formed shaft coupling does not need intermediate connecting node, avoids shaft coupling in use because frequency of use, making
It is distorted with the variation of environment and is even broken.
Preferably, step (1) the vacuum preheating temperature is the temperature that glutinous sliding state carbon graphite occurs in bamboo charcoal surface.
Preferably, the pressure of step (1) described pressurization is 3-5 atmospheric pressure.
When glutinous sliding state occurs in bamboo charcoal surface, there is part bamboo charcoal graphitization in fact, promoted the self-lubricating of bamboo charcoal itself
Performance, and kaolin is provided and enters approach inside bamboo charcoal, and silver is made preferably to penetrate into stomata under lesser application pressure
In.
Preferably, it is 3-9 times that step (3) circulation, which hydrogenates-go hydrogenation number of processing,.
Compared with prior art, the present invention has the advantage that
(1) bamboo charcoal itself in the present invention can be used as one kind of carbon, carry out auxiliary enhancing to aluminium alloy, and bamboo charcoal
Itself there is good thermally conductive (heat dissipation), high temperature resistant, a system such as corrosion-resistant, self-lubricating, chemical stability is good, thermal expansion coefficient is low
The advantage of column.
(2) kaolin of the invention is added in bamboo charcoal as additive, can not only be filled the internal porosity of bamboo charcoal, be mentioned
The intensity of bamboo charcoal is risen, while promoting wear-resisting, the antioxygenic property of alloy, and have the effect of reinforcement.
(3) present invention also carries out bamboo charcoal to soak silver-colored processing, carries out stomata filling by way of leaching silver, increases to greatest extent
The compaction rate of bamboo charcoal, and make the compatible degree for soaking silver-colored bamboo charcoal material promotion and alloy.
(4) present invention is hydrogenated-is gone the flouring technology of hydrogenation using circulation, and the particle for not only obtaining suitable shaft coupling alloy is big
It is small, while can significantly reduce impurity content present in alloy.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
Embodiment 1
Ingredient: weigh raw material by above-mentioned aluminium alloy proportion, including soak silver-colored bamboo charcoal: 0.3%, Si:0.1%, Zr:0.15%,
Ni:0.07%, Co:0.15%, surplus are Al and impurity, wherein soaking silver-colored bamboo charcoal is accounted for the 85% ultra-fine bamboo for soaking silver-colored bamboo charcoal by content
Charcoal, content account for 8% nano-Ag particles for soaking silver-colored bamboo charcoal, content accounts for the 7% kaolin powder composition for soaking silver-colored bamboo charcoal, and nano silver
Particle is distributed as 50 nano silver/mm on ultra-fine bamboo charcoal2Bamboo charcoal；
Pre-treatment: being preheated to bamboo charcoal surface for ultra-fine bamboo charcoal progress vacuum and glutinous sliding state carbon graphite occur, then by kaolin
Powder uniformly spreads and spills in bamboo charcoal surface, continues to heat and 4 atmospheric pressure is added to form compound bamboo charcoal, then by Nano silver deposition in compound
Bamboo charcoal surface, natural cooling are crushed to soak silver-colored bamboo charcoal particle；
It smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
Powder molding processed: alloy block is heated to 650 DEG C, 0.5 atmospheric pressure of pressure is controlled, carries out 5 circulation hydrogenation-dehydrogenations
Change processing and form alloy powder, powder is inserted in mold and is pressed into shaft coupling semi-finished product；
Finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
Embodiment 2
Ingredient: weigh raw material by above-mentioned aluminium alloy proportion, including soak silver-colored bamboo charcoal: 0.1%, Si:0.05%, Zr:0.1%,
Ni:0.04%, Co:0.1%, surplus are Al and impurity, wherein soaking silver-colored bamboo charcoal is accounted for the 80% ultra-fine bamboo for soaking silver-colored bamboo charcoal by content
Charcoal, content account for 10% nano-Ag particles for soaking silver-colored bamboo charcoal, content accounts for the 10% kaolin powder composition for soaking silver-colored bamboo charcoal, and nanometer
Argent grain is distributed as 10 nano silver/mm on ultra-fine bamboo charcoal2Bamboo charcoal；
Pre-treatment: being preheated to bamboo charcoal surface for ultra-fine bamboo charcoal progress vacuum and glutinous sliding state carbon graphite occur, then by kaolin
Powder uniformly spreads and spills in bamboo charcoal surface, continues to heat and 4 atmospheric pressure is added to form compound bamboo charcoal, then by Nano silver deposition in compound
Bamboo charcoal surface, natural cooling are crushed to soak silver-colored bamboo charcoal particle；
It smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
Powder molding processed: alloy block is heated to 650 DEG C, 0.5 atmospheric pressure of pressure is controlled, carries out 5 circulation hydrogenation-dehydrogenations
Change processing and form alloy powder, powder is inserted in mold and is pressed into shaft coupling semi-finished product；
Finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
Embodiment 3
Ingredient: weigh raw material by above-mentioned aluminium alloy proportion, including soak silver-colored bamboo charcoal: 0.5%, Si:0.15%, Zr:0.2%,
Ni:0.1%, Co:0.2%, surplus are Al and impurity, wherein soaking silver-colored bamboo charcoal is accounted for the 90% ultra-fine bamboo for soaking silver-colored bamboo charcoal by content
Charcoal, content account for 5% nano-Ag particles for soaking silver-colored bamboo charcoal, content accounts for the 5% kaolin powder composition for soaking silver-colored bamboo charcoal, and nano silver
Particle is distributed as 100 nano silver/mm on ultra-fine bamboo charcoal2Bamboo charcoal；
Pre-treatment: being preheated to bamboo charcoal surface for ultra-fine bamboo charcoal progress vacuum and glutinous sliding state carbon graphite occur, then by kaolin
Powder uniformly spreads and spills in bamboo charcoal surface, continues to heat and 4 atmospheric pressure is added to form compound bamboo charcoal, then by Nano silver deposition in compound
Bamboo charcoal surface, natural cooling are crushed to soak silver-colored bamboo charcoal particle；
It smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
Powder molding processed: alloy block is heated to 650 DEG C, 0.5 atmospheric pressure of pressure is controlled, carries out 5 circulation hydrogenation-dehydrogenations
Change processing and form alloy powder, powder is inserted in mold and is pressed into shaft coupling semi-finished product；
Finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
Embodiment 4
Ingredient: weigh raw material by above-mentioned aluminium alloy proportion, including soak silver-colored bamboo charcoal: 0.3%, Si:0.1%, Zr:0.15%,
Ni:0.07%, Co:0.15%, surplus are Al and impurity, wherein soaking silver-colored bamboo charcoal is accounted for the 85% ultra-fine bamboo for soaking silver-colored bamboo charcoal by content
Charcoal, content account for 8% nano-Ag particles for soaking silver-colored bamboo charcoal, content accounts for the 7% kaolin powder composition for soaking silver-colored bamboo charcoal, and nano silver
Particle is distributed as 50 nano silver/mm on ultra-fine bamboo charcoal2Bamboo charcoal；
Pre-treatment: being preheated to bamboo charcoal surface for ultra-fine bamboo charcoal progress vacuum and glutinous sliding state carbon graphite occur, then by kaolin
Powder uniformly spreads and spills in bamboo charcoal surface, continues to heat and 3 atmospheric pressure is added to form compound bamboo charcoal, then by Nano silver deposition in compound
Bamboo charcoal surface, natural cooling are crushed to soak silver-colored bamboo charcoal particle；
It smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
Powder molding processed: alloy block is heated to 600 DEG C, 0.3 atmospheric pressure of pressure is controlled, carries out 3 circulation hydrogenation-dehydrogenations
Change processing and form alloy powder, powder is inserted in mold and is pressed into shaft coupling semi-finished product；
Finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
Embodiment 5
Ingredient: weigh raw material by above-mentioned aluminium alloy proportion, including soak silver-colored bamboo charcoal: 0.3%, Si:0.1%, Zr:0.15%,
Ni:0.07%, Co:0.15%, surplus are Al and impurity, wherein soaking silver-colored bamboo charcoal is accounted for the 85% ultra-fine bamboo for soaking silver-colored bamboo charcoal by content
Charcoal, content account for 8% nano-Ag particles for soaking silver-colored bamboo charcoal, content accounts for the 7% kaolin powder composition for soaking silver-colored bamboo charcoal, and nano silver
Particle is distributed as 50 nano silver/mm on ultra-fine bamboo charcoal2Bamboo charcoal；
Pre-treatment: being preheated to bamboo charcoal surface for ultra-fine bamboo charcoal progress vacuum and glutinous sliding state carbon graphite occur, then by kaolin
Powder uniformly spreads and spills in bamboo charcoal surface, continues to heat and 5 atmospheric pressure is added to form compound bamboo charcoal, then by Nano silver deposition in compound
Bamboo charcoal surface, natural cooling are crushed to soak silver-colored bamboo charcoal particle；
It smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
Powder molding processed: alloy block is heated to 700 DEG C, 0.7 atmospheric pressure of pressure is controlled, carries out 9 circulation hydrogenation-dehydrogenations
Change processing and form alloy powder, powder is inserted in mold and is pressed into shaft coupling semi-finished product；
Finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
Embodiment 6
Difference with embodiment 1 is only that the content that silver-colored bamboo charcoal is soaked in 6 aluminium alloy stock of embodiment is 0.05%.
Embodiment 7
Difference with embodiment 1 is only that the content that silver-colored bamboo charcoal is soaked in 7 aluminium alloy stock of embodiment is 0.55%.
Embodiment 8
Difference with embodiment 1 is only that the nano-Ag particles that embodiment 8 soaks silver-colored bamboo charcoal are distributed as on ultra-fine bamboo charcoal
9 nano silver/mm2Bamboo charcoal.
Embodiment 9
Difference with embodiment 1 is only that the nano-Ag particles that embodiment 9 soaks silver-colored bamboo charcoal are distributed as on ultra-fine bamboo charcoal
101 nano silver/mm2Bamboo charcoal.
Embodiment 10
Difference with embodiment 1 is only that surface does not occur glutinous sliding state carbon graphite when the ultra-fine bamboo charcoal of embodiment 10 heats.
Embodiment 11
Difference with embodiment 1 is only that, completely in glutinous sliding state carbon graphite after the heating of the ultra-fine bamboo charcoal of embodiment 11.
Embodiment 12
Difference with embodiment 1 is only that it is 1 time that the circulation of embodiment 12, which hydrogenates-go hydrogenation number of processing,.
Embodiment 13
Difference with embodiment 1 is only that it is 10 times that the circulation of embodiment 13, which hydrogenates-go hydrogenation number of processing,.
Comparative example 1
Difference with embodiment 1 is only that, is not impregnated with silver-colored bamboo charcoal in the al alloy component of comparative example 1.
Comparative example 2
Difference with embodiment 1 is only that, kaolin powder is free of in the leaching silver bamboo charcoal of comparative example 2.
Comparative example 3
Difference with embodiment 1 is only that comparative example 3 directly will soak silver-colored bamboo charcoal and other raw material mixed meltings form alloy
Block.
Comparative example 4
Difference with embodiment 1 is only that comparative example 4 does not carry out circulation hydrogenation-to alloy block and goes hydrogenation treatment.
The shaft coupling of embodiment 1-13 and comparative example 1-4 are tested, test its intensity, elongation, corrosion resistance and
Hardness, the results are shown in Table 1:
Table 1: the performance of shaft coupling in embodiment 1-13 and comparative example 1-4
Corrosion resistance data refer to that the time of pitting occurs in shaft coupling surface in table, and material and technologic variation can be to productions
The performance of product causes large effect.
It is skilled to this field although present invention has been described in detail and some specific embodiments have been cited
For technical staff, as long as it is obvious for can making various changes or correct without departing from the spirit and scope of the present invention.
Claims (8)
1. anti-twisting is without joint shaft coupling, which is characterized in that the shaft coupling is made of aluminium alloy, and the aluminium alloy is by such as
The raw material of lower mass percent forms: soak silver-colored bamboo charcoal: 0.1-0.5%, Si:0.05-0.15%, Zr:0.1-0.2%, Ni:
0.04-0.1%, Co:0.1-0.2%, surplus are Al and impurity.
2. shaft coupling according to claim 1, which is characterized in that the ingredient for soaking silver-colored bamboo charcoal is by ultra-fine bamboo charcoal, nanometer
Argent grain, kaolin powder composition.
3. shaft coupling according to claim 2, which is characterized in that the content of the ultra-fine bamboo charcoal accounts for the 80- for soaking silver-colored bamboo charcoal
90%, 5-10%, the kaolin powder that nano-Ag particles account for the silver-colored bamboo charcoal of leaching account for the 5-10% for soaking silver-colored bamboo charcoal.
4. shaft coupling according to claim 1 to 3, which is characterized in that the nano-Ag particles for soaking silver-colored bamboo charcoal are super
10-100 nano silver/mm is distributed as on thin bamboo charcoal2Bamboo charcoal.
5. preparation method of the anti-twisting without joint shaft coupling, which is characterized in that described method includes following steps:
(1) pre-treatment: being weighed by above-mentioned raw materials, ultra-fine bamboo charcoal is carried out vacuum preheating, then kaolin powder is uniformly spread
It spills in bamboo charcoal surface, continues to heat and be pressed to form compound bamboo charcoal, it is naturally cold then by Nano silver deposition in composite bamboo carbon surface
But, it is crushed to soak silver-colored bamboo charcoal particle；
(2) it smelts: all material mixed melting in addition to soaking silver-colored bamboo charcoal being formed into aluminium alloy, semisolid is naturally cooled to, will soak
Silver-colored carbon particle, which is uniformly spread, to be sprinkled upon semi-solid alloy surface and is pressed into, and continues to be heated to alloy to be in a liquid state and being sufficiently mixed, cooling
Alloy block；
(3) powder molding processed: alloy block is subjected to circulation hydrogenation-, hydrogenation treatment is gone to form alloy powder, powder is inserted in mold
It is pressed into shaft coupling semi-finished product；
(4) finished product: shaft coupling finished product will be heat-treated to obtain after the sintering of shaft coupling semi-finished product.
6. the preparation method of shaft coupling according to claim 5, which is characterized in that step (1) the vacuum preheating
Temperature is the temperature that glutinous sliding state carbon graphite occurs in bamboo charcoal surface.
7. the preparation method of shaft coupling according to claim 5, which is characterized in that the pressure of step (1) described pressurization is
3-5 atmospheric pressure.
8. the preparation method of shaft coupling according to claim 5, which is characterized in that step (3) circulation hydrogenation-dehydrogenation
Changing number of processing is 3-9 times.
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| 黄伯云 主编: "《中国战略性新兴产业——新材料 稀土储氢材料》", 30 April 2017, 中国铁道出版社 * |
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| CN109371296B (en) | 2020-11-20 |
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