CN108165840A - A kind of wear-resisting valve processing clamp - Google Patents
A kind of wear-resisting valve processing clamp Download PDFInfo
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- CN108165840A CN108165840A CN201711450728.4A CN201711450728A CN108165840A CN 108165840 A CN108165840 A CN 108165840A CN 201711450728 A CN201711450728 A CN 201711450728A CN 108165840 A CN108165840 A CN 108165840A
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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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- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
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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
- C22C32/0094—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 organic materials as the main non-metallic constituent, e.g. resin
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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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
- C23C14/165—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon by cathodic sputtering
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/22—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the process of coating
- C23C14/34—Sputtering
- C23C14/35—Sputtering by application of a magnetic field, e.g. magnetron sputtering
- C23C14/352—Sputtering by application of a magnetic field, e.g. magnetron sputtering using more than one target
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Abstract
The present invention relates to a kind of clamp for machining, and in particular to a kind of wear-resisting valve processing clamp belongs to machine tool Material Field.The wear-resisting valve processing clamp of the present invention is prepared by aluminum alloy materials, and the aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.2 10.5%, Cu：1.5 1.8%, Zn：0.56 0.75%, Fe：0.23 0.25%, Mn：0.25 0.30%, Mg：0.15 0.25%, Bi：0.56 0.75%, Sb：0.35 0.40%, Sr：0.02 0.05%, rice hull ash：2.5 3.2%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer.The wear-resisting valve processing clamp of the present invention has excellent mechanical performance, and service life is long.
Description
Invention field
The present invention relates to a kind of clamp for machining, and in particular to a kind of wear-resisting valve processing clamp belongs to machine tool material
Field.
Background technology
Fixture is to be used for during machine-building fixing processing object, is allowed to occupy correct position, with receive construction or
The device of detection.In a broad sense, any process in technical process, for dress that is rapid, easily and safely installing workpiece
It puts, all can be described as fixture.Such as welding fixture, inspection jig, assembling jig, machine tool fixture etc..Wherein machine tool fixture is the most normal
See, be often simply called fixture.In workpieces processing on lathe, the surface to enable workpiece reaches size as defined in drawing, geometric form
Shape and with the requirement of the technologies such as the relative-position error of other surfaces, workpiece before processing must be installed to (positioning), clip and (press from both sides
Tightly).Fixture usually by setting element (determining correct position of the workpiece in fixture), clamping device, to knife induction element (determine
The relative position of cutter and workpiece or guiding tool orientation), indexing means (make workpiece that can complete several stations in once mounting
Processing, have circular index device and linear movement indexing means two class), the groups such as connecting element and clamp body (fixture base)
Into.But due to the limitation of material, often there are the problem of not wear-resisting, the service life is low for existing clamp for machining.
Invention content
The present invention in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of material is reliable, service life length it is wear-resisting
Valve processing clamp.
The purpose of the present invention is realized by following technical solution：A kind of wear-resisting valve processing clamp, the wear-resisting valve body
Clamp for machining is prepared by aluminum alloy materials, and the aluminum alloy materials specifically include the ingredient of following mass percent：Si：
10.2-10.5%, Cu：1.5-1.8%, Zn：0.56-0.75%, Fe：0.23-0.25%, Mn：0.25-0.30%, Mg：
0.15-0.25%, Bi：0.56-0.75%, Sb：0.35-0.40%, Sr：0.02-0.05%, rice hull ash：2.5-3.2%, Ni：
≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer.
The wear-resisting valve processing clamp of the present invention adds in rice hull ash by using above-mentioned al alloy component in aluminium alloy,
Can not only refining aluminum alloy crystal grain, moreover it is possible to the mechanical performance of the aluminium alloy enhanced；Meanwhile the present invention is in aluminum alloy surface
It is coated with MnCo2Alloy-layer can generate MnCo in high-temperature oxydation2O4Spinel, the valve body processed clip so as to improve
The wear-resisting property of tool, reaches the purpose of the present invention.
In the wear-resisting valve processing clamp of the present invention, by adding in the Si of mentioned component in aluminium alloy, it can not only make
Make Mg all in alloy can be with Mg2The form of Si phases exists, and is fully played with the effect for ensuring Mg.And with
Si contents increase, the crystal grains fine of alloy, and metal fluidity increase, casting character improves, and heat treatment reinforcement effect increases, section bar
Tensile strength improve but plasticity reduces, corrosion resistance degenerates.Therefore the Si elements of mentioned component are used in the present invention.
In addition, it is of the invention by adding in Cu elements in aluminium alloy, it, can when Cu elements are more than 1.5% in aluminium alloy
Significantly increase the intensity and hardness of obtained aluminium alloy, but further increasing with Cu elements, the precipitation of Al-Cu phases, die casting
After can shrink, then switch to expand so that obtained clamp for machining size is unstable, therefore the present invention select mentioned component Cu
Content.
In al alloy component, Fe is generally considered harmful element, since the Fe of impurity can generate FeAl3Needle-shaped knot
Crystalline substance is so the crystal being precipitated is very thin, but is then easier preparation sinter molding when the ingredient of Fe is 0.2-0.3%；But containing a large amount of
Fe, can generate metallic compound, form hard spot.And when amount containing Fe is more than a certain amount of, alloy flowability, damage casting can be reduced
The quality of part shortens the service life of metal assembly in die casting equipment.Therefore the present invention carries out the Fe constituent contents in aluminium alloy
Limitation.
Furthermore the addition of Bi, Sb and Sr cause Eutectic Si morphology in alloy to change in the present invention, so as to make alloy
Impact flexibility, ultimate tensile strength and elongation increase, fracture surface analysis the result shows that, add Sr or a small amount of Bi and Sb, close
Gold surface is in ductile rupture rather than quasi-cleavage brittle fracture.In addition, after addition Sr, Bi and Sb, the quality index of alloy is by matrix
The 102MPa of alloy increases respectively to 164.7MPa, 156.3MPa and 152.6MPa.Polarization corrosion test in NaCl solution
The result shows that after adding Sb, Bi and Sr respectively, the corrosion potential of alloy bears shifting.And immersion corrosion the experimental results showed that, due to Al
With the increase of Si eutectic boundaries, the addition of Sb, Bi and Sr element has decisive role to the corrosion rate of alloy.As excellent
The sum of choosing, mass percent of Bi, Sb and Sr of the present invention are 0.8-1.2%.
The present invention is made of by adding rice hull ash, most of rice that grinds in aluminum alloy materials rice and wheat bran, remaining part
It is divided into rice husk.Rice-hulling mill generates the steam for digestion process by the use of rice husk as fuel.In combustion, waving in shell
Stimulating food disappears, and remaining shell is converted to ash, is rice hull ash.Rice hull ash is the world's available agricultural wastes on a large scale., rice husk
The crystal grain of ash particle meeting refining aluminum alloy.According to Hall-Patch relationships, crystallite dimension is inversely proportional with tensile strength.With crystal grain
Refinement, the quantity in region and boundary for resisting external force increase.The movement of dislocation due to grain boundary dislocation orientation frequently change and by
To obstruction.Good bonding and clearly interface delay separation.The rice hull ash particle from aluminum substrate during tensile loads,
The tensile load of application is effectively transferred to rice hull ash particle.Moreover, dispersion of the rice hull ash particle in entire matrix provides
Orowan reinforcings.The dislocation of particle periphery is hovered, bradykinesia.Therefore, the microhardness of aluminium alloy passes through rice hull ash particle
Improved, mechanical performance further improves.
It is another object of the present invention to provide a kind of preparation method of above-mentioned wear-resisting valve processing clamp, the preparations
Method specifically comprises the following steps：
Premix：Si, Al in aluminium alloy stock and quality are done for the stearic acid of aluminium alloy quality 0.75-0.95%
It is so mixed that be pre-mixed Al alloy powder；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 150-155MPa, when
Between be 2-3min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 20-21, extrusion temperature be 450-460 DEG C under the conditions of squeeze
It is molded to obtain alloy components；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；
MnCo2It is prepared by alloy-layer target：Metal Mn and Co are weighed, line is cut after being put into melting in vacuum medium frequency induction furnace and casting
It is cut into alloy-layer target；
MnCo2Alloy-layer coats：MnCo2 alloy-layers are processed coated on wear-resisting valve body using vacuum multi-target magnetic control sputtering instrument
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product.
In a kind of above-mentioned preparation method of wear-resisting valve processing clamp, quality is also added into sintering process and is closed for aluminium
The sintering aid of golden amount 1.1-1.2%, the sintering aid are Al2O3.For being free of fine Al2O3The mixture of powder, compacting
When aluminum-based powder occur to reset, deformation, part is formed between particle and is in close contact face, oxide among these is more difficult with sintering hydrogen
It contacts and is reduced.With the progress of sintering, in green body the reduction of interconnected pore be less useful for the removing of residual oxygen.When addition is few
The Al of amount2O3During powder, since these fine grits are relatively evenly adhered to basic aluminium powder surface, iron when can cause to suppress
Interparticle contact defective tightness, especially in Al2O3When the additive amount increase of fine powder causes green density to reduce, green body inner pore
Connected ratio should further increase, and be more advantageous to contact of the aluminium base particle surface with reducing atmosphere.It is and fine for these
Al2O3Particle, due to having higher specific surface area, reduction temperature more required than the oxide on basic aluminium powder surface is lower.
Fine Al2O3Powder be reduced after in relatively low sintering temperature or shorter sintering time the effect of activated sintering become apparent from.
With the increase of sintering temperature or the extension of time, the declines of attritive powder activated sintering, this is because particle is grown up
With merging so that the driving force of activated sintering declines, the strength enhancing of alloy is more attributed to the homogenization and hole of alloying element
The structures such as reduction, sphering change.
In a kind of above-mentioned preparation method of wear-resisting valve processing clamp, the sintering temperature is 620-630 DEG C, and the time is
2-2.1h。
In a kind of above-mentioned preparation method of wear-resisting valve processing clamp, the heat treatment specifically comprises the following steps：
Temperature is solution treatment 3-4h at 490-500 DEG C, and water cooling is timeliness ageing treatment 8-9h at 180-190 DEG C in temperature.Solid solution temperature
Degree and time are that the principal element of influence solution heat treatment system selects suitable technological parameter can be by the heterogeneous structure of aluminium alloy
It is changed into single-phase solid solution body tissue as far as possible, its performance improves solid solubility temperature and extension soaking time can so as to improve
Increase the solid solubility of solid solution atom in the base, improve the solid solution strengthening effect of alloy, but can lead to alloy grain again simultaneously
Grow up or even occur burning, offset the solution strengthening that solid solution atom generates, reduce alloy strength.Therefore, in solution treatment
In the process, it needs to select rational solid solubility temperature and time, makes it while solution strengthening is realized, and can effectively inhibit crystal grain
Grow up.
In a kind of above-mentioned preparation method of wear-resisting valve processing clamp, the mass ratio of the metal Mn and Co is (0.5-
0.8)：1.
In a kind of above-mentioned preparation method of wear-resisting valve processing clamp, the vacuum multi-target magnetic control sputtering instrument sputtering pressure
For 4.9-5Pa, sputter temperature is room temperature, sputtering time 1-1.2h, sputtering voltage 290-300V, sputtering current 0.12-
0.14A。
Compared with prior art, the invention has the advantages that：
1st, the wear-resisting valve processing clamp of the present invention is made, and rice is just added in aluminum alloy materials of aluminum alloy materials
Shell ash can ensure that the mechanical properties strength of manufactured wear-resisting valve processing clamp further improves；
2nd, the wear-resisting valve processing clamp of the present invention is by rational preparation method, and adds in sintering in preparation process and help
Agent can ensure that manufactured wear-resisting valve processing clamp intensity is high, uniformity is good；
3rd, the wear-resisting valve processing clamp of the present invention is by the rational aluminum alloy materials of compatibility, and passes through the reasonably side of preparation
Method can make wear-resisting valve processing clamp obtained have excellent mechanical performance, and service life is long.
Specific embodiment
It is the specific embodiment of the present invention below, technical scheme of the present invention is further described, but the present invention
It is not limited to these embodiments.
Embodiment 1
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain for the stearic acid of aluminium alloy quality 0.75%
It is pre-mixed Al alloy powder；The aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.2%, Cu：1.5%,
Zn：0.56%, Fe：0.23%, Mn：0.25%, Mg：0.155%, Bi：0.56%, Sb：0.35%, Sr：0.02%, rice husk
Ash：2.5%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 150MPa, the time is
2min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；Sintering temperature is 620 DEG C, time 2h；In sintering process
In be also added into quality be aluminium alloy quality 1.1% sintering aid, the sintering aid be Al2O3；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 20-21, extrusion temperature be 450-460 DEG C under the conditions of squeeze
It is molded to obtain alloy components；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；It is dissolved at being 490 DEG C in temperature
Handle 3h, water cooling, timeliness ageing treatment 8h at being 180 DEG C in temperature；
MnCo2It is prepared by alloy-layer target：It is 0.5 to weigh mass ratio：1 metal Mn and Co, is put into vacuum medium frequency induction furnace
Melting and after casting wire cutting into alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is processed coated on wear-resisting valve body
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product；The vacuum multi-target magnetic control sputtering instrument sputtering pressure is 4.9Pa, is sputtered
Temperature is room temperature, sputtering time 1h, sputtering voltage 290V, sputtering current 0.12A.
Embodiment 2
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain in advance for the stearic acid of aluminium alloy quality 0.8%
Mix Al alloy powder；The aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.3%, Cu：1.6%,
Zn：0.58%, Fe：0.235%, Mn：0.26%, Mg：0.18%, Bi：0.6%, Sb：0.36%, Sr：0.03%, rice hull ash：
2.8%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 151MPa, the time is
2.2min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；Sintering temperature is 622 DEG C, time 2.02h；It is being sintered
It is also added into the sintering aid that quality is aluminium alloy quality 1.12% in the process, the sintering aid is Al2O3；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 20.2, extrusion temperature be 452 DEG C under the conditions of extrusion forming obtain
Alloy components；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；It is dissolved at being 492 DEG C in temperature
Handle 3.2h, water cooling, timeliness ageing treatment 8.2h at being 182 DEG C in temperature；
MnCo2It is prepared by alloy-layer target：It is 0.6 to weigh mass ratio：1 metal Mn and Co, is put into vacuum medium frequency induction furnace
Melting and after casting wire cutting into alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is processed coated on wear-resisting valve body
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product；The vacuum multi-target magnetic control sputtering instrument sputtering pressure is 4.92Pa, is splashed
Temperature is penetrated as room temperature, sputtering time 1.05h, sputtering voltage 292V, sputtering current 0.125A.
Embodiment 3
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain for the stearic acid of aluminium alloy quality 0.85%
It is pre-mixed Al alloy powder；The aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.35%, Cu：
1.65%, Zn：0.65%, Fe：0.24%, Mn：0.28%, Mg：0.2%, Bi：0.68%, Sb：0.38%, Sr：0.035%,
Rice hull ash：2.85%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy
Layer；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 152MPa, the time is
2.5min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；Sintering temperature is 625 DEG C, time 2.05h；It is being sintered
It is also added into the sintering aid that quality is aluminium alloy quality 1.15% in the process, the sintering aid is Al2O3；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 20.5, extrusion temperature be 455 DEG C under the conditions of extrusion forming obtain
Alloy components；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；It is dissolved at being 495 DEG C in temperature
Handle 3.5h, water cooling, timeliness ageing treatment 8.5h at being 185 DEG C in temperature；
MnCo2It is prepared by alloy-layer target：It is 0.65 to weigh mass ratio：1 metal Mn and Co, is put into vacuum medium frequency induction furnace
Melting and after casting wire cutting into alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is processed coated on wear-resisting valve body
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product；The vacuum multi-target magnetic control sputtering instrument sputtering pressure is 4.95Pa, is splashed
Temperature is penetrated as room temperature, sputtering time 1.1h, sputtering voltage 295V, sputtering current 0.13A.
Embodiment 4
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain in advance for the stearic acid of aluminium alloy quality 0.9%
Mix Al alloy powder；The aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.45%, Cu：1.7%,
Zn：0.7%, Fe：0.245%, Mn：0.28%, Mg：0.22%, Bi：0.7%, Sb：0.38%, Sr：0.04%, rice hull ash：
3%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 154MPa, the time is
2.8min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；Sintering temperature is 628 DEG C, time 2.08h；It is being sintered
It is also added into the sintering aid that quality is aluminium alloy quality 1.18% in the process, the sintering aid is Al2O3；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 20.8, extrusion temperature be 458 DEG C under the conditions of extrusion forming obtain
Alloy components；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；It is dissolved at being 498 DEG C in temperature
Handle 3.8h, water cooling, timeliness ageing treatment 8.8h at being 188 DEG C in temperature；
MnCo2It is prepared by alloy-layer target：It is 0.75 to weigh mass ratio：1 metal Mn and Co, is put into vacuum medium frequency induction furnace
Melting and after casting wire cutting into alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is processed coated on wear-resisting valve body
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product；The vacuum multi-target magnetic control sputtering instrument sputtering pressure is 4.98Pa, is splashed
Temperature is penetrated as room temperature, sputtering time 1.18h, sputtering voltage 298V, sputtering current 0.135A.
Embodiment 5
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain for the stearic acid of aluminium alloy quality 0.95%
It is pre-mixed Al alloy powder；The aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.5%, Cu：1.8%,
Zn：0.75%, Fe：0.25%, Mn：0.30%, Mg：0.25%, Bi：0.75%, Sb：0.4%, Sr：0.05%, rice hull ash：
3.2%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；The aluminum alloy surface is coated with MnCo2Alloy-layer；
Ball milling：Residual components in aluminium alloy stock and premixing Al alloy powder are placed on planetary ball mill the machine that carries out
Tool alloying；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank, pressure 155MPa, the time is
3min；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；Sintering temperature is 630 DEG C, time 2.1h；Sintered
The sintering aid that quality is aluminium alloy quality 1.2% is also added into journey, the sintering aid is Al2O3；
Hot extrusion：By sintered prefabricated blank extrusion ratio be 21, extrusion temperature be 460 DEG C under the conditions of extrusion forming must close
Golden part；
Heat treatment：Alloy components are carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；It is dissolved at being 500 DEG C in temperature
Handle 4h, water cooling, timeliness ageing treatment 9h at being 190 DEG C in temperature；
MnCo2It is prepared by alloy-layer target：It is 0.8 to weigh mass ratio：1 metal Mn and Co, is put into vacuum medium frequency induction furnace
Melting and after casting wire cutting into alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is processed coated on wear-resisting valve body
Wear-resisting valve processing clamp finished product is obtained on fixture semi-finished product；The vacuum multi-target magnetic control sputtering instrument sputtering pressure is 5Pa, and sputtering is warm
It spends for room temperature, sputtering time 1.2h, sputtering voltage 300V, sputtering current 0.14A.
Embodiment 6
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the embodiment helps in preparation process without adding in
Agglutinant, other are same as Example 3, and details are not described herein again.
Embodiment 7
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the embodiment is applied in preparation process using common
Coating method, other are same as Example 3, and details are not described herein again.
Embodiment 8
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the embodiment uses ordinary hot in preparation process
Processing, other are same as Example 3, and details are not described herein again.
Comparative example 1
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the comparative example uses common commercially available aluminium alloy, other
Same as Example 3, details are not described herein again.
Comparative example 2
With differing only in for embodiment 3, without adding in rice hull ash in the wear-resisting valve processing clamp raw material of the comparative example,
He is same as Example 3, and details are not described herein again.
Comparative example 3
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the comparative example does not coat MnCo2Alloy-layer,
He is same as Example 3, and details are not described herein again.
Comparative example 4
With differing only in for embodiment 3, the wear-resisting valve processing clamp of the comparative example coats common coating, other and implementation
Example 3 is identical, and details are not described herein again.
Wear-resisting valve processing clamp in embodiment 1-8 comparative examples 1-4 is subjected to performance detection, the results are shown in Table 1：
Table 1：Wear-resisting valve processing clamp performance test results in embodiment 1-8 and comparative example 1-4
In conclusion the wear-resisting valve processing clamp of the present invention is by the rational aluminum alloy materials of compatibility, and pass through rational
Preparation method can make wear-resisting valve processing clamp obtained have excellent mechanical performance, and service life is long.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can do various modifications or additions to described specific embodiment or replace in a similar way
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of wear-resisting valve processing clamp, which is characterized in that the wear-resisting valve processing clamp by aluminum alloy materials prepare and
Into the aluminum alloy materials specifically include the ingredient of following mass percent：Si：10.2-10.5%, Cu：1.5-1.8%, Zn：
0.56-0.75%, Fe：0.23-0.25%, Mn：0.25-0.30%, Mg：0.15-0.25%, Bi：0.56-0.75%, Sb：
0.35-0.40%, Sr：0.02-0.05%, rice hull ash：2.5-3.2%, Ni：≤ 0.1%, Cr：≤ 0.05%, surplus Al；
The aluminum alloy surface is coated with MnCo2Alloy-layer.
2. a kind of wear-resisting valve processing clamp according to claim 1, which is characterized in that the quality percentage of Bi, Sb and Sr
Than the sum of be 0.8-1.2%.
A kind of 3. preparation method of wear-resisting valve processing clamp as described in claim 1, which is characterized in that the preparation method
Specifically comprise the following steps：
Premix：Si, Al in aluminium alloy stock and quality are subjected to dry-mixed obtain for the stearic acid of aluminium alloy quality 0.75-0.95%
It is pre-mixed Al alloy powder；
Ball milling：Residual components in aluminium alloy stock are placed in premixing Al alloy powder on planetary ball mill and carry out mechanical conjunction
Aurification；
Isostatic cool pressing：Al alloy powder after ball milling is subjected to isostatic cool pressing into prefabricated blank；
Sintering：Prefabricated blank is sintered in a nitrogen atmosphere；
Hot extrusion：Sintered prefabricated blank extrusion forming is obtained into wear-resisting valve processing clamp blank；
Heat treatment：Wear-resisting valve processing clamp blank is carried out to be heat-treated to obtain wear-resisting valve processing clamp semi-finished product；
MnCo2It is prepared by alloy-layer target：Weigh metal Mn and Co, after being put into vacuum medium frequency induction furnace melting and casting wire cutting into
Alloy-layer target；
MnCo2Alloy-layer coats：Using vacuum multi-target magnetic control sputtering instrument by MnCo2Alloy-layer is coated on wear-resisting valve processing clamp
Wear-resisting valve processing clamp finished product is obtained on semi-finished product.
4. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the isostatic cool pressing
Pressure is 150-155MPa, time 2-3min.
5. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that in sintering process also
The sintering aid that quality is aluminium alloy quality 1.1-1.2% is added, the sintering aid is Al2O3。
6. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the sintering temperature is
620-630 DEG C, time 2-2.1h.
7. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the hot extrusion is squeezed
Pressure ratio is 20-21, and extrusion temperature is 450-460 DEG C.
8. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the heat treatment is specific
Include the following steps：Solution treatment 3-4h at being 490-500 DEG C in temperature, water cooling, timeliness timeliness at being 180-190 DEG C in temperature
Handle 8-9h.
9. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the metal Mn and Co
Mass ratio be (0.5-0.8)：1.
10. the preparation method of wear-resisting valve processing clamp according to claim 3, which is characterized in that the more targets of vacuum
Magnetic control sputtering device sputtering pressure is 4.9-5Pa, and sputter temperature is room temperature, sputtering time 1-1.2h, sputtering voltage 290-
300V, sputtering current 0.12-0.14A.
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| CN201711450728.4A CN108165840A (en) | 2017-12-27 | 2017-12-27 | A kind of wear-resisting valve processing clamp |
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| CN201711450728.4A CN108165840A (en) | 2017-12-27 | 2017-12-27 | A kind of wear-resisting valve processing clamp |
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| CN108165840A true CN108165840A (en) | 2018-06-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653858A (en) * | 2012-05-28 | 2012-09-05 | 哈尔滨工业大学深圳研究生院 | Method for preparing MnCo spinel protecting film by magnetron sputtering and subsequent oxidation |
| CN104263983A (en) * | 2014-09-19 | 2015-01-07 | 北京科技大学 | Method for preparing high-strength, high-conductivity and heat-resistant aluminum alloys |
| CN105177325A (en) * | 2015-04-29 | 2015-12-23 | 安徽长城输送机械制造有限公司 | Aluminum alloy casting treatment technology |
| CN106337146A (en) * | 2016-08-30 | 2017-01-18 | 南京惠德机械有限公司 | Special clamp for punching machine machining of automobile door |
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2017
- 2017-12-27 CN CN201711450728.4A patent/CN108165840A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102653858A (en) * | 2012-05-28 | 2012-09-05 | 哈尔滨工业大学深圳研究生院 | Method for preparing MnCo spinel protecting film by magnetron sputtering and subsequent oxidation |
| CN104263983A (en) * | 2014-09-19 | 2015-01-07 | 北京科技大学 | Method for preparing high-strength, high-conductivity and heat-resistant aluminum alloys |
| CN105177325A (en) * | 2015-04-29 | 2015-12-23 | 安徽长城输送机械制造有限公司 | Aluminum alloy casting treatment technology |
| CN106337146A (en) * | 2016-08-30 | 2017-01-18 | 南京惠德机械有限公司 | Special clamp for punching machine machining of automobile door |
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Application publication date: 20180615 |