CN106399727B - A kind of needle bar interlocking lever - Google Patents
A kind of needle bar interlocking lever Download PDFInfo
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- CN106399727B CN106399727B CN201611064885.7A CN201611064885A CN106399727B CN 106399727 B CN106399727 B CN 106399727B CN 201611064885 A CN201611064885 A CN 201611064885A CN 106399727 B CN106399727 B CN 106399727B
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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
- C22C1/1073—Infiltration or casting under mechanical pressure, e.g. squeeze casting
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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
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0005—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with at least one oxide and at least one of carbides, nitrides, borides or silicides as the main non-metallic constituents
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
- C22C32/0068—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents only nitrides
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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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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/30—Details
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- Sliding-Contact Bearings (AREA)
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Abstract
The invention belongs to textile technology fields, are related to a kind of needle bar interlocking lever.The needle bar interlocking lever is made of ceramic skeleton reinforced aluminum matrix composites, and ceramic skeleton reinforced aluminum matrix composites are mainly combined by the alloy matrix aluminum of ceramic skeleton and surplus that volume ratio is 30-50% by pressure infiltration.The compression strength of ceramic material as skeleton is good, and the mechanical property of alloy matrix aluminum is good, and ceramic skeleton and alloy matrix aluminum have good Interface adhesive strength.Therefore, ceramic skeleton is made by pressure infiltration technology to be tightly combined with matrix, boundary is clearly demarcated, and interface has higher mechanical strength, toughness, wearability without microdefects such as holes, and comprehensive performance is more preferable.
Description
Technical field
The invention belongs to textile technology fields, are related to a kind of sewing machine component more particularly to a kind of needle bar interlocking lever.
Background technique
Needle bar interlocking lever belongs to drive unit of the sewing machine accessory, plays the role of the power of movement being transmitted to operating mechanism.
After long service, the main damage forms of needle bar interlocking lever are fatigue fracture, excessive abrasion, deformation etc..Therefore, design is first
The operating condition of phase, needle bar interlocking lever require interlocking lever intensity, wearability and anti-fatigue performance with higher, and require
Enough rigidity and toughness etc..
Currently, its material generally uses quenched and tempered steel, aluminium alloy etc. in the processing technology of traditional needle bar interlocking lever.Wherein,
The density of aluminum alloy materials is low, and for intensity near or above high-quality steel, plasticity is good, thermal conductivity and excellent corrosion resistance, and easy to process,
It is one of the main material for preparing sewing machine accessory at present.By long-run development, sewing machine zero is prepared using aluminum alloy materials and is matched
Part has been in a kind of stable state, has technically been difficult to break through.Therefore, in prior art basis, using tradition
Aluminium alloy preparation, it is difficult to obtain a kind of comprehensive performance and be able to the needle bar interlocking lever broken through.
Summary of the invention
The purpose of the present invention is being directed to the above-mentioned problems in the prior art, propose a kind of using ceramic skeleton enhancing
Made of aluminum matrix composite, comprehensive performance more preferably needle bar interlocking lever.
Object of the invention can be realized by the following technical scheme: a kind of needle bar interlocking lever, the needle bar interlocking lever by
Ceramic skeleton reinforced aluminum matrix composites are made, and the ceramic skeleton reinforced aluminum matrix composites are mainly 30- by volume ratio
50% ceramic skeleton and the alloy matrix aluminum of surplus are combined by pressure infiltration.
In a kind of above-mentioned needle bar interlocking lever, the ceramic skeleton reinforced aluminum matrix composites include that volume ratio is 5-
15% hard abrasive particles and volume ratio are the ceramic skeleton of 30-50%, the alloy matrix aluminum of 35-65% passes through pressure infiltration
It is combined.
Needle bar interlocking lever of the present invention is made of ceramic skeleton reinforced aluminum matrix composites, and this ceramic skeleton enhances aluminium base
Composite material is a kind of network searching tools, and compared with traditional whisker, particle etc. enhance aluminum alloy materials, they have more
High mechanical strength and toughness, shows the advantage of network intersection construction.During long service, this network of the present invention
Intersect composite material will not as particle, whisker reinforcement aluminum matrix composite, reinforcement exist be easy from matrix extract,
It falls off, the defect of chip formation hard abrasive.Therefore, needle bar interlocking lever made of ceramic skeleton reinforced aluminum matrix composites of the present invention
With better comprehensive performance.
In a kind of above-mentioned needle bar interlocking lever, the ceramic skeleton is three-dimensional network ceramic skeleton, the three-dimensional network
The aperture of ceramic skeleton is 50-300 μm, porosity 65-75%.
The present invention preferably has the three-dimensional network ceramic skeleton of three-dimensional bind mode, therefore ceramic skeleton and aluminium can be made to close
Golden material can be combined more effectively, so that composite material be made to obtain higher intensity, fracture toughness, good wear-resisting property and
Resistance to heat shocks can wait.
Three-dimensional network ceramic skeleton of the invention is after green body is made in cellular polyurethane foamed plastics dip-coating ceramic slurry
It is sintered, further preferably manufactured ceramic skeleton is three-dimensional network silicon nitride ceramics skeleton.Because silicon nitride ceramics has
Density is small, intensity is high, high temperature resistant, low-heat are led, thermal expansion coefficient is small, corrosion-resistant and be not easy to aoxidize at high temperature etc. a series of
Superior function.Meanwhile silicon nitride and aluminium alloy have good wetability (≤780 DEG C) at a lower temperature, from
And facilitate three-dimensional network silicon nitride ceramics skeleton and the good interface cohesion of aluminium alloy acquisition, guarantee finally obtained ceramic bone
The performance of frame reinforced aluminum matrix composites.
In addition, as enhancing skeleton, three-dimensional network ceramics must have the performances such as preferable compression strength first.And three dimensional network
Multiple influence of the compression strength of network ceramics by factors such as the shape of ceramic skeleton, uniformity, powder particles degree, porositys,
Wherein, porosity is main influence factor.Porosity is reduced, regular shape, the ceramic skeleton of compact structure and particle are thin
Small powder both contributes to improve the compression strength of three-dimensional network ceramic skeleton.The excessively high three-dimensional network ceramic skeleton of porosity is thin
Small, compression strength is very low, is just broken under the load of very little, is unable to satisfy the requirement of metal infiltration, it is difficult to guarantee in gold
Belong to the integrality of ceramic skeleton in liquid stowing operation.With the reduction of porosity, skeleton diameter increases, load bearing ability
Increase obviously, and with the reduction of porosity, the amplification of compression strength value is more significant.In the aperture of the above-mentioned restriction of the present invention
In the range of porosity, make three-dimensional network ceramic skeleton of the present invention that there is uniform open-celled structure, and hole is mutually communicated, hole
Muscle structure more even compact, reinforcing effect it is further preferred that.
In a kind of above-mentioned needle bar interlocking lever, the alloy matrix aluminum is by following mass percent at being grouped as: Si:
0.4-0.8%, Mg:0.8-1.2%, Mn:0.13-0.17%, Cr:0.08-0.22%, Cu:0.11-0.16%, Zn:0.18-
0.22%, Zr:0.12-0.15%, Ti:0.11-0.15%, Sc:0.03-0.05%, Sb:0.06-0.1%, Ba:0.3-
0.5%, rare earth element: 0.01-0.02%, Hf:0.1-0.2%, Fe < 0.025%, surplus be Al and inevitably it is miscellaneous
Prime element.
The main alloy element of alloy matrix aluminum of the present invention is magnesium and silicon, can form Mg2Si phase, Mg2Si phase is solid-solution in aluminium
In, it is the hardening constituent of aluminium alloy.In addition, the present invention can be destroyed using pressure infiltration complex technique, silicon addition and Mg
Pellumina shortens the incubation period of infiltration process.And micro manganese and chromium are used to neutralize the bad of iron and act on, micro copper and zinc are used
In the intensity for improving alloy matrix aluminum, micro zirconium and titanium are for refining crystal grain and control recrystallized structure.It enables aluminum alloy to have
The performances such as preferable intensity, corrosion resistance.
In addition, the present invention also added micro Sc, the Zr in micro Sc and alloy can be formed just in process of setting
Raw Al3(Sc, Zr), can significant refining alloy as-cast grain, play the role of auxiliary refinement crystal grain and control recrystallized structure.And
The secondary Al formed when homogenization3(Sc, Zr) particle can strong pinning dislocation and sub boundary, effectively inhibit Deformation structure again
Crystallization, significantly improves the mechanical property of alloy.
The trace alloying element Hf that the present invention also adds can improve elevated temperature strength and the creep rupture life of alloy.
In addition to this, rare earth element is the elemental composition often added in present alloy modification, can refine crystal grain, purification it is miscellaneous
Matter reaches the hardness for improving alloy, intensity and other effects.And Ba element is generally considered to be impurity element, can reduce aluminium alloy
Purity influences the comprehensive performance of aluminium alloy, so not containing under normal circumstances, in aluminium alloy or the impurity element of Ba containing minute quantity.
But the present invention is studies have shown that Ba constituent content is improved, and compatibility Sb element and micro rare earth element simultaneously, can play
Good reinforcing effect, meanwhile, the dosage of rare earth element can be reduced.
In a kind of above-mentioned needle bar interlocking lever, the hard abrasive particles are in the nitride of the oxide of aluminium, aluminium
At least one, partial size are less than the aperture of ceramic skeleton.Hard abrasive particles are added in ceramic skeleton reinforced aluminum matrix composites,
By simple physical blending, the wearability and other mechanical properties of composite material can be improved.
In a kind of above-mentioned needle bar interlocking lever, the pressure limit of the pressure infiltration is 10-15MPa, temperature 660-
700℃.Present invention composite material ceramics as made from pressure infiltration combine closely with matrix, and boundary is clearly demarcated, in interface
Without microdefects such as holes, effect is more excellent.
In a kind of above-mentioned needle bar interlocking lever, the ceramic skeleton reinforced aluminum matrix composites pass through Homogenization Treatments,
The temperature of Homogenization Treatments is 500-550 DEG C, time 10-12h.After composite material is made by pressure infiltration in the present invention, warp
Cross Homogenization Treatments, quantity, distribution and the size of the phase in alloy matrix aluminum it is further preferred that, alloy rigidity is also relatively high.
In a kind of above-mentioned needle bar interlocking lever, the ceramic skeleton reinforced aluminum matrix composites are after Homogenization Treatments
Solution treatment is also carried out, the temperature of solution treatment is 630-640 DEG C, time 1-2h.
In a kind of above-mentioned needle bar interlocking lever, the ceramic skeleton reinforced aluminum matrix composites are gone back after solution treatment
Ageing treatment is carried out, the temperature of ageing treatment is 170-190 DEG C, time 8-10h.
Compared with prior art, the method has the advantages that
1. needle bar interlocking lever of the present invention is made of ceramic skeleton reinforced aluminum matrix composites, have higher mechanical strong
Degree, toughness, wearability, comprehensive performance are more preferable.
2. the compression strength of ceramic skeleton of the present invention is good, the mechanical property of alloy matrix aluminum is good, and ceramic skeleton and aluminium close
Auri body has good Interface adhesive strength, and ceramic skeleton is made by pressure infiltration technology and is tightly combined with matrix, boundary
Clearly, composite material of the interface without microdefects such as holes.
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:
The present embodiment needle bar interlocking lever is that 30% ceramic skeleton and 70% alloy matrix aluminum pass through pressure by volume ratio
Infiltration is combined.Specific preparation process is as follows:
Cellular polyurethane foamed plastics dip-coating silicon nitride ceramics slurry is made after green body and sinters three-dimensional network silicon nitride into
Ceramic skeleton, skeleton is rod-shaped in needle bar gearing, and the aperture of three-dimensional network ceramic skeleton is 50 μm, porosity 75%.
Melting molten aluminum, the constituent and its mass percent of molten aluminum are as follows: Si:0.4%, Mg:0.8%, Mn:0.13%,
Cr:0.08%, Cu:0.11%, Zn:0.18%, Zr:0.12%, Ti:0.11%, Sc:0.03%, Sb:0.06%, Ba:
0.3%, rare earth element ce: 0.01%, Hf:0.1%, Fe:0.015%, surplus are Al and inevitable impurity element.
Using pressure infiltration technology, at a temperature of 10MPa and 660 DEG C, rod-shaped three-dimensional network is interlocked in needle bar by above-mentioned
Ceramic skeleton and molten aluminum pressure are seeped into needle bar interlocking lever blank.The blank Homogenization Treatments 12h at 500 DEG C respectively, it is solid at 630 DEG C
Final needle bar interlocking lever is made in molten processing 2h, the ageing treatment 10h at 170 DEG C.
Embodiment 2:
The present embodiment needle bar interlocking lever is that 35% ceramic skeleton and 65% alloy matrix aluminum pass through pressure by volume ratio
Infiltration is combined.Specific preparation process is as follows:
Cellular polyurethane foamed plastics dip-coating silicon nitride ceramics slurry is made after green body and sinters three-dimensional network silicon nitride into
Ceramic skeleton, skeleton is rod-shaped in needle bar gearing, and the aperture of three-dimensional network ceramic skeleton is 100 μm, porosity 72%.
Melting molten aluminum, the constituent and its mass percent of molten aluminum are as follows: Si:0.5%, Mg:0.9%, Mn:0.14%,
Cr:0.10%, Cu:0.12%, Zn:0.19%, Zr:0.13%, Ti:0.12%, Sc:0.037%, Sb:0.07%, Ba:
0.35%, rare earth element ce: 0.014%, Hf:0.13%, Fe:0.02%, surplus are Al and inevitable impurity element.
Using pressure infiltration technology, at a temperature of 10MPa and 680 DEG C, rod-shaped three-dimensional network is interlocked in needle bar by above-mentioned
Ceramic skeleton and molten aluminum pressure are seeped into needle bar interlocking lever blank.The blank Homogenization Treatments 12h at 510 DEG C respectively, it is solid at 635 DEG C
Final needle bar interlocking lever is made in molten processing 1.5h, the ageing treatment 10h at 175 DEG C.
Embodiment 3:
The present embodiment needle bar interlocking lever is that 40% ceramic skeleton and 60% alloy matrix aluminum pass through pressure by volume ratio
Infiltration is combined.Specific preparation process is as follows:
Cellular polyurethane foamed plastics dip-coating silicon nitride ceramics slurry is made after green body and sinters three-dimensional network silicon nitride into
Ceramic skeleton, skeleton is rod-shaped in needle bar gearing, and the aperture of three-dimensional network ceramic skeleton is 200 μm, porosity 70%.
Melting molten aluminum, the constituent and its mass percent of molten aluminum are as follows: Si:0.6%, Mg:1.0%, Mn:0.15%,
Cr:0.15%, Cu:0.14%, Zn:0.20%, Zr:0.13%, Ti:0.13%, Sc:0.04%, Sb:0.08%, Ba:
0.4%, rare-earth elements La: 0.016%, Hf:0.15%, Fe:0.02%, surplus are Al and inevitable impurity element.
Using pressure infiltration technology, at a temperature of 12MPa and 670 DEG C, rod-shaped three-dimensional network is interlocked in needle bar by above-mentioned
Ceramic skeleton and molten aluminum pressure are seeped into needle bar interlocking lever blank.The blank Homogenization Treatments 11h at 520 DEG C respectively, it is solid at 635 DEG C
Final needle bar interlocking lever is made in molten processing 1.5h, the ageing treatment 9h at 180 DEG C.
Embodiment 4:
The present embodiment needle bar interlocking lever is that 45% ceramic skeleton and 55% alloy matrix aluminum pass through pressure by volume ratio
Infiltration is combined.Specific preparation process is as follows:
Cellular polyurethane foamed plastics dip-coating silicon nitride ceramics slurry is made after green body and sinters three-dimensional network silicon nitride into
Ceramic skeleton, skeleton is rod-shaped in needle bar gearing, and the aperture of three-dimensional network ceramic skeleton is 250 μm, porosity 68%.
Melting molten aluminum, the constituent and its mass percent of molten aluminum are as follows: Si:0.7%, Mg:1.1%, Mn:0.16%,
Cr:0.20%, Cu:0.15%, Zn:0.21%, Zr:0.14%, Ti:0.14%, Sc:0.046%, Sb:0.09%, Ba:
0.45%, rare-earth elements La: 0.018%, Hf:0.18%, Fe:0.01%, surplus are Al and inevitable impurity element.
Using pressure infiltration technology, at a temperature of 13MPa and 690 DEG C, rod-shaped three-dimensional network is interlocked in needle bar by above-mentioned
Ceramic skeleton and molten aluminum pressure are seeped into needle bar interlocking lever blank.The blank Homogenization Treatments 11h at 540 DEG C respectively, it is solid at 640 DEG C
Final needle bar interlocking lever is made in molten processing 1.5h, the ageing treatment 8h at 185 DEG C.
Embodiment 5:
The present embodiment needle bar interlocking lever is that 50% ceramic skeleton and 50% alloy matrix aluminum pass through pressure by volume ratio
Infiltration is combined.Specific preparation process is as follows:
Cellular polyurethane foamed plastics dip-coating silicon nitride ceramics slurry is made after green body and sinters three-dimensional network silicon nitride into
Ceramic skeleton, skeleton is rod-shaped in needle bar gearing, and the aperture of three-dimensional network ceramic skeleton is 300 μm, porosity 65%.
Melting molten aluminum, the constituent and its mass percent of molten aluminum are as follows: Si:0.8%, Mg:1.2%, Mn:0.17%,
Cr:0.22%, Cu:0.16%, Zn:0.22%, Zr:0.15%, Ti:0.15%, Sc:0.05%, Sb:0.1%, Ba:
0.5%, rare earth element ce: 0.02%, Hf:0.2%, Fe:0.02%, surplus are Al and inevitable impurity element.
Using pressure infiltration technology, at a temperature of 15MPa and 700 DEG C, rod-shaped three-dimensional network is interlocked in needle bar by above-mentioned
Ceramic skeleton and molten aluminum pressure are seeped into needle bar interlocking lever blank.The blank Homogenization Treatments 10h at 550 DEG C respectively, it is solid at 640 DEG C
Final needle bar interlocking lever is made in molten processing 1h, the ageing treatment 8h at 190 DEG C.
Embodiment 6:
The present embodiment needle bar interlocking lever by volume ratio be 30% ceramic skeleton, 60% alloy matrix aluminum and 10% it is super
Hard abrasion resistant particles are combined by pressure infiltration.Hard abrasive particles are aluminum oxide, and partial size is less than the hole of ceramic skeleton
Diameter.Ceramic skeleton, alloy matrix aluminum, specific preparation process are same as Example 1.
Embodiment 7:
The present embodiment needle bar interlocking lever by volume ratio be 30% ceramic skeleton, 65% alloy matrix aluminum and 5% it is super
Hard abrasion resistant particles are combined by pressure infiltration.Hard abrasive particles are aluminum oxide, and partial size is less than the hole of ceramic skeleton
Diameter.Ceramic skeleton, alloy matrix aluminum, specific preparation process are same as Example 2.
Embodiment 8:
The present embodiment needle bar interlocking lever by volume ratio be 40% ceramic skeleton, 50% alloy matrix aluminum and 10% it is super
Hard abrasion resistant particles are combined by pressure infiltration.Hard abrasive particles are aluminum oxide, and partial size is less than the hole of ceramic skeleton
Diameter.Ceramic skeleton, alloy matrix aluminum, specific preparation process are same as Example 3.
Embodiment 9:
The present embodiment needle bar interlocking lever by volume ratio be 40% ceramic skeleton, 45% alloy matrix aluminum and 15% it is super
Hard abrasion resistant particles are combined by pressure infiltration.Hard abrasive particles are aluminium nitride, and partial size is less than the aperture of ceramic skeleton.Pottery
Porcelain body frame, alloy matrix aluminum, specific preparation process are same as Example 4.
Embodiment 10:
The present embodiment needle bar interlocking lever by volume ratio be 50% ceramic skeleton, 35% alloy matrix aluminum and 15% it is super
Hard abrasion resistant particles are combined by pressure infiltration.Hard abrasive particles are aluminum oxide and aluminium nitride mass ratio is 1:1's
Mixture, partial size are less than the aperture of ceramic skeleton.Ceramic skeleton, alloy matrix aluminum, specific preparation process are same as Example 5.
Needle bar interlocking lever made from above-described embodiment 1-10 is tested for the property, test result is as shown in table 1.Wherein,
The condition of wear rate are as follows: under room temperature, 6N load, 1m/s speed, test specimen slides 2500m.
Table 1:
As known from Table 1, after hard abrasive particles being added in embodiment 6-10, the performances such as intensity, elongation percentage slightly improve, base
This maintenance is stablized, and still, the very fast decline of wear rate, the wearability of needle bar interlocking lever is promoted obvious.
Comparative example 1:
Comparative example 1 is only that the needle bar interlocking lever of comparative example 1 is directly prepared by alloy matrix aluminum, is not had with the difference of embodiment 3
There is ceramics enhancing skeleton.Through detecting, the ultimate tensile strength of the needle bar interlocking lever of comparative example 1 is 135MPa, ultimate bending strength
For 54MPa, wear rate 6.98%, elongation percentage 21%.It follows that alloy matrix aluminum is using ceramics enhancing skeleton enhancing
Afterwards, performance boost is obvious.
Comparative example 2:
Comparative example 2 and the difference of embodiment 3 are only that, Sc element is free of in the aluminum substrate of comparative example 2.
Comparative example 3:
Comparative example 3 and the difference of embodiment 3 are only that, Zr element is free of in the aluminum substrate of comparative example 3.
Through detecting, the ultimate tensile strength of comparative example 2 and comparative example 3 is respectively 174MPa, 165MPa, ultimate bending strength
Respectively 57MPa, 59MPa.It follows that Sc and Zr compatibility can play the role of reinforced alloys.
Comparative example 4:
Comparative example 4 and the difference of embodiment 3 are only that, Ba and Sb element is free of in the aluminum substrate of comparative example 4.
Comparative example 5；
Comparative example 5 and the difference of comparative example 4 are only that the rare earth element in the aluminum substrate of comparative example 4 expands 20 times.
Through detecting, the ultimate tensile strength of comparative example 4 and comparative example 5 is respectively 180MPa, 217MPa, ultimate bending strength
Respectively 55MPa, 70MPa.It follows that Ba element, Sb element and rare earth element compatibility can play the role of reinforced alloys,
The usage amount of rare earth is reduced, resource is protected.
Comparative example 6:
Comparative example 6 and the difference of embodiment 3 are only that the porosity of the ceramics enhancing skeleton of comparative example 6 is 80%.It is pressing
During infiltration, ceramic skeleton portion fractures, skeleton is imperfect.
Comparative example 7:
Comparative example 7 and the difference of embodiment 7 are only that the partial size of the hard abrasive particles of comparative example 7 is greater than ceramic skeleton
Aperture.Through detecting, the ultimate tensile strength of the needle bar interlocking lever of comparative example 7 is 197MPa, ultimate bending strength 65MPa,
Performance decreases.This is because partial particulate plugging hole can be made when hard abrasive particles partial size is greater than ceramic skeleton aperture
Diameter, alloy matrix aluminum can not be filled up completely ceramic skeleton during pressing and seeping, and the compactness of composite material is insufficient, leads to composite wood
The reduced performance of material.
In view of the numerous embodiments of the scheme of the present invention, each embodiment experimental data is huge numerous, is not suitable for arranging one by one herein
Explanation is lifted, but the content verified required for each embodiment and obtained final conclusion are close.So herein not to each reality
The verifying content for applying example is explained one by one, and only illustrates the excellent place of the present patent application using embodiment 1-10 as representative.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can do various modifications or supplement or is substituted in a similar manner to described specific embodiment, but simultaneously
Spirit or beyond the scope defined by the appended claims of the invention is not deviated by.
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 (4)
1. a kind of needle bar interlocking lever, which is characterized in that the needle bar interlocking lever is made of ceramic skeleton reinforced aluminum matrix composites,
The ceramic skeleton reinforced aluminum matrix composites are mainly by the aluminium alloy base of ceramic skeleton and surplus that volume ratio is 30-50%
Body is combined by pressure infiltration；The ceramic skeleton is three-dimensional network ceramic skeleton, the three-dimensional network ceramic skeleton
Aperture is 50-300 μm, porosity 65-75%；The alloy matrix aluminum is by following mass percent at being grouped as: Si:0.4-
0.8%, Mg:0.8-1.2%, Mn:0.13-0.17%, Cr:0.08-0.22%, Cu:0.11-0.16%, Zn:0.18-
0.22%, Zr:0.12-0.15%, Ti:0.11-0.15%, Sc:0.03-0.05%, Sb:0.06-0.1%, Ba:0.3-
0.5%, rare earth element: 0.01-0.02%, Hf:0.1-0.2%, Fe < 0.025%, surplus be Al and inevitably it is miscellaneous
Prime element；The ceramic skeleton reinforced aluminum matrix composites pass through Homogenization Treatments, and the temperature of Homogenization Treatments is 500-550
DEG C, time 10-12h；The ceramic skeleton reinforced aluminum matrix composites also carry out solution treatment after Homogenization Treatments, Gu
The temperature of molten processing is 630-640 DEG C, time 1-2h；The ceramic skeleton reinforced aluminum matrix composites are after solution treatment
Ageing treatment is also carried out, the temperature of ageing treatment is 170-190 DEG C, time 8-10h.
2. a kind of needle bar interlocking lever according to claim 1, which is characterized in that the ceramic skeleton enhances aluminum-base composite material
The aluminium alloy of material includes the hard abrasive particles that volume ratio is 5-15% and volume ratio is 30-50% ceramic skeleton, 35-65%
Matrix is combined by pressure infiltration.
3. a kind of needle bar interlocking lever according to claim 2, which is characterized in that the hard abrasive particles are the oxidation of aluminium
At least one of object, nitride of aluminium, partial size are less than the aperture of ceramic skeleton.
4. a kind of needle bar interlocking lever according to claim 1 or 2, which is characterized in that the pressure limit of the pressure infiltration
For 10-15MPa, temperature is 660-700 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064885.7A CN106399727B (en) | 2016-11-28 | 2016-11-28 | A kind of needle bar interlocking lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064885.7A CN106399727B (en) | 2016-11-28 | 2016-11-28 | A kind of needle bar interlocking lever |
Publications (2)
| Publication Number | Publication Date |
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| CN106399727A CN106399727A (en) | 2017-02-15 |
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