CN106957974A - A kind of motor vehicle gearbox and its manufacture method - Google Patents

A kind of motor vehicle gearbox and its manufacture method Download PDF

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Publication number
CN106957974A
CN106957974A CN201710209186.5A CN201710209186A CN106957974A CN 106957974 A CN106957974 A CN 106957974A CN 201710209186 A CN201710209186 A CN 201710209186A CN 106957974 A CN106957974 A CN 106957974A
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parts
upper box
hours
cooled
incubated
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CN106957974B (en
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田庭
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Longkou City Hongyuan Machinery Co Ltd
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Individual
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/5607—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides
    • C04B35/5611—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on refractory metal carbides based on titanium carbides
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
    • C09D181/06—Polysulfones; Polyethersulfones
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/18—Fireproof paints including high temperature resistant paints
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • 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
    • 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
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/032—Gearboxes; Mounting gearing therein characterised by the materials used
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
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    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
    • C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
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    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate
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    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02017—Gearboxes; Mounting gearing therein characterised by special features related to the manufacturing of the gear case, e.g. special adaptations for casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
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    • F16H2057/02043—Gearboxes for particular applications for vehicle transmissions

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Abstract

A kind of motor vehicle gearbox and its manufacture method, the gearbox includes lower box and upper box, lower box is connected to form gearbox cavity with upper box, power transmission shaft and gear are provided with gearbox cavity, the gear includes the tungsten carbide coating on gear and gear surface, the upper box inner surface is coated with alumina series ceramic material layer, the lower box inner surface is coated with carbonization titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint, the composition of aluminium alloy are simple；Weather-proof antifouling property is effectively improved to box outer surface formation organic coating, by improving its wearability to gear outer surface coated with tungsten carbide coating.

Description

A kind of motor vehicle gearbox and its manufacture method
Technical field
The present invention relates to a kind of motor vehicle gearbox, belongs to technical field of automobile.
Background technology
In the keen competition of world's automobile market, each state all to high-quality, high reliability, lightweight, energy-conservation, it is low into This direction is developed.Lightweight is shown as in terms of material, part steel (iron) part is replaced with aluminium alloy, to reach automobile to high-quality Amount, the requirement of the development of low cost；Science is shown as in process aspect, replaces traditional technique to be carried to reach with advanced technologies High semifinished product precision, reduces allowance, reduces raw materials consumption, reduces the purpose of cost.Further to expand aluminum alloy materials In the utilization of vehicle structure and power assembly system, the preparation method and manufacturing process of existing aluminium alloy castings have been difficult to meet This requirement.
The content of the invention
It is motor-driven that a kind of technique for being proposed aiming above mentioned problem of the present invention is simple, low cost, corrosion resistance are good Car gearbox.
A kind of motor vehicle gearbox and its manufacture method, the gearbox include lower box and upper box, lower box with it is upper Casing, which is connected to form in gearbox cavity, gearbox cavity, is provided with power transmission shaft and gear, the gear include gear and The tungsten carbide coating on gear surface, the upper box inner surface is coated with alumina series ceramic material layer, the lower box Inner surface is coated with carbonization titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8-9 ﹪,： Fe：4-5 ﹪, Zn：2-3 ﹪, Mg：1-2 ﹪, Ti：0.7-0.8 ﹪, Mn 0.6-0.7 ﹪, Cu 0.4-0.5 ﹪, Sn：0.2- 0.3 ﹪, Nb：0.08-0.09 ﹪,：Ag 0.06-0.07 ﹪, Cr：0.05-0.06 ﹪, Pr：0.06-0.07 ﹪, Mo：0.08- 0.09 ﹪, surplus is Al and inevitable impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 10-13 parts of niter cake, 10-11 parts of fluotitanic acid, 5-10 parts of hydrofluoric acid, 2-3 parts of zirconium nitrate, 1-2 parts of dodecyl sodium sulfate, water 25-35 parts；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 30-35 parts of titanium nitride, 5-10 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating 60 DEG C/h of speed, is incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after cool again To 150 DEG C, 25 DEG C/h of rate of temperature fall is incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 20-30 parts of acrylic resin, 10-15 parts of chromium chloride, 10-15 parts of talcum powder, 10-15 parts of vanadic anhydride, dodecane 10 parts of base benzene sulfonic acid sodium salt, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water is obtained Final casing.
A kind of described motor vehicle gearbox, aluminum alloy chemically, which is constituted, is（Percentage by weight）：Ni：8 ﹪,：Fe：4 ﹪, Zn ：2 ﹪, Mg：1 ﹪, Ti：0.7 ﹪, Mn 0.6 ﹪, Cu 0.4 ﹪, Sn：0.2 ﹪, Nb：0.08 ﹪,：Ag 0.06 ﹪, Cr： 0.05 ﹪, Pr：0.06 ﹪, Mo：0.08 ﹪, surplus is Al and inevitable impurity.
A kind of described motor vehicle gearbox, aluminum alloy chemically, which is constituted, is（Percentage by weight）：Ni：9 ﹪,：Fe：5 ﹪, Zn ：3 ﹪, Mg：2 ﹪, Ti：0.8 ﹪, Mn 0.7 ﹪, Cu 0.5 ﹪, Sn：0.3 ﹪, Nb：0.09 ﹪,：The ﹪ of Ag 0.07, Cr：0.06 ﹪, Pr：0.07 ﹪, Mo：0.09 ﹪, surplus is Al and inevitable impurity.
A kind of described motor vehicle gearbox, aluminum alloy chemically, which is constituted, is（Percentage by weight）：Ni：8.5 ﹪,：Fe： 4.5 ﹪, Zn：2.5 ﹪, Mg：1.5 ﹪, Ti：0.75 ﹪, Mn 0.65 ﹪, Cu 0.45 ﹪, Sn：0.25 ﹪, Nb：0.085 ﹪,： Ag 0.065 ﹪, Cr：0.055 ﹪, Pr：0.065 ﹪, Mo：0.085 ﹪, surplus is Al and inevitable impurity.
A kind of described motor vehicle gearbox, alumina series ceramic material layer includes（Weight）：40 parts of aluminum oxide, nitridation 30 parts of titanium, 5 parts of titanium oxide.
A kind of described motor vehicle gearbox, alumina series ceramic material layer includes（Weight）：40 parts of aluminum oxide, nitridation 35 parts of titanium, 10 parts of titanium oxide.
A kind of described motor vehicle gearbox, alumina series ceramic material layer includes（Weight）：40 parts of aluminum oxide, nitridation 33 parts of titanium, 7 parts of titanium oxide.
A kind of described motor vehicle gearbox, coating includes（Weight）：60 parts of polyethersulfone resin, 20 parts of acrylic resin, 10 parts of chromium chloride, 10 parts of talcum powder, 10 parts of vanadic anhydride, 10 parts of neopelex, 5 parts of ethylenediamine, zinc molybdate 3 Part, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water.
A kind of described motor vehicle gearbox, coating includes（Weight）：60 parts of polyethersulfone resin, 30 parts of acrylic resin, 15 parts of chromium chloride, 15 parts of talcum powder, 15 parts of vanadic anhydride, 10 parts of neopelex, 5 parts of ethylenediamine, zinc molybdate 3 Part, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water.
A kind of described motor vehicle gearbox, coating includes（Weight）：60 parts of polyethersulfone resin, 25 parts of acrylic resin, 13 parts of chromium chloride, 13 parts of talcum powder, 13 parts of vanadic anhydride, 10 parts of neopelex, 5 parts of ethylenediamine, zinc molybdate 3 Part, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water.
Foregoing invention content is relative to the beneficial effect of prior art：1）The composition of aluminium alloy is simple；2）To this into The surface treatment procedure that the aluminium alloy divided is passivated, it is to avoid the problems such as any surface stain occur, makes acquisition surface clean and tidy； 3）Because of interior Long Term Contact gear box oil, damage can be caused to its inner surface, by being applied in aluminium alloy box inner surface Titanium oxide base coating is covered, corrosion resisting property is improved.4）Weather-proof antifouling property is effectively improved to box outer surface formation organic coating.5） By improving its wearability to gear outer surface coated with tungsten carbide coating.
Embodiment
In order to which technical characteristic, purpose and effect to the present invention are more clearly understood from, now describe the present invention's in detail Embodiment.
Embodiment 1
A kind of motor vehicle gearbox, the gearbox includes lower box and upper box, and lower box is connected to form speed change with upper box Power transmission shaft and gear are provided with case cavity, gearbox cavity, the gear includes the carbon on gear and gear surface Change tungsten coating, the upper box inner surface is coated with alumina series ceramic material layer, and the lower box inner surface is coated with carbonization Titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8 ﹪,：Fe： 4 ﹪, Zn：2 ﹪, Mg：1 ﹪, Ti：0.7 ﹪, Mn 0.6 ﹪, Cu 0.4 ﹪, Sn：0.2 ﹪, Nb：0.08 ﹪,：The ﹪ of Ag 0.06, Cr：0.05 ﹪, Pr：0.06 ﹪, Mo：0.08 ﹪, surplus is Al and inevitable impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 10 parts of niter cake, 10 parts of fluotitanic acid, 5 parts of hydrofluoric acid, 2 parts of zirconium nitrate, 1 part of dodecyl sodium sulfate, 25 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 30 parts of titanium nitride, 5 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 20 parts of acrylic resin, 10 parts of chromium chloride, 10 parts of talcum powder, 10 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.
Embodiment 2
A kind of motor vehicle gearbox, the gearbox includes lower box and upper box, and lower box is connected to form speed change with upper box Power transmission shaft and gear are provided with case cavity, gearbox cavity, the gear includes the carbon on gear and gear surface Change tungsten coating, the upper box inner surface is coated with alumina series ceramic material layer, and the lower box inner surface is coated with carbonization Titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：9 ﹪,：Fe： 5 ﹪, Zn：3 ﹪, Mg：2 ﹪, Ti：0.8 ﹪, Mn 0.7 ﹪, Cu 0.5 ﹪, Sn：0.3 ﹪, Nb：0.09 ﹪,：Ag 0.07 ﹪, Cr：0.06 ﹪, Pr：0.07 ﹪, Mo：0.09 ﹪, surplus is Al and inevitable impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 13 parts of niter cake, 11 parts of fluotitanic acid, 10 parts of hydrofluoric acid, 3 parts of zirconium nitrate, 2 parts of dodecyl sodium sulfate, 35 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 35 parts of titanium nitride, 10 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 30 parts of acrylic resin, 15 parts of chromium chloride, 15 parts of talcum powder, 15 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.
Embodiment 3
A kind of motor vehicle gearbox, the gearbox includes lower box and upper box, and lower box is connected to form speed change with upper box Power transmission shaft and gear are provided with case cavity, gearbox cavity, the gear includes the carbon on gear and gear surface Change tungsten coating, the upper box inner surface is coated with alumina series ceramic material layer, and the lower box inner surface is coated with carbonization Titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8.5 ﹪,： Fe：4.5 ﹪, Zn：2.5 ﹪, Mg：1.5 ﹪, Ti：0.75 ﹪, Mn 0.65 ﹪, Cu 0.45 ﹪, Sn：0.25 ﹪, Nb： 0.085 ﹪,：Ag 0.065 ﹪, Cr：0.055 ﹪, Pr：0.065 ﹪, Mo：0.085 ﹪, surplus is Al and inevitable Impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 12 parts of niter cake, 10.5 parts of fluotitanic acid, 7 parts of hydrofluoric acid, 2.5 parts of zirconium nitrate, 1.5 parts of dodecyl sodium sulfate, 30 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 33 parts of titanium nitride, 7 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 25 parts of acrylic resin, 13 parts of chromium chloride, 13 parts of talcum powder, 13 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.
Embodiment 4
A kind of motor vehicle gearbox, the gearbox includes lower box and upper box, and lower box is connected to form speed change with upper box Power transmission shaft and gear are provided with case cavity, gearbox cavity, the gear includes the carbon on gear and gear surface Change tungsten coating, the upper box inner surface is coated with alumina series ceramic material layer, and the lower box inner surface is coated with carbonization Titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8.2 ﹪,： Fe：4.3 ﹪, Zn：2.4 ﹪, Mg：1.3 ﹪, Ti：0.72 ﹪, Mn 0.62 ﹪, Cu 0.41 ﹪, Sn：0.21 ﹪, Nb： 0.082 ﹪,：Ag 0.063 ﹪, Cr：0.054 ﹪, Pr：0.064 ﹪, Mo：0.083 ﹪, surplus is Al and inevitable Impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 12 parts of niter cake, 10.2 parts of fluotitanic acid, 6 parts of hydrofluoric acid, 2.2 parts of zirconium nitrate, 1.1 parts of dodecyl sodium sulfate, 26 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 31 parts of titanium nitride, 6 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 22 parts of acrylic resin, 11 parts of chromium chloride, 11 parts of talcum powder, 11 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.
Embodiment 5
A kind of motor vehicle gearbox, the gearbox includes lower box and upper box, and lower box is connected to form speed change with upper box Power transmission shaft and gear are provided with case cavity, gearbox cavity, the gear includes the carbon on gear and gear surface Change tungsten coating, the upper box inner surface is coated with alumina series ceramic material layer, and the lower box inner surface is coated with carbonization Titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8.6 ﹪,： Fe：4.6 ﹪, Zn：2.7 ﹪, Mg：1.8 ﹪, Ti：0.76 ﹪, Mn 0.67 ﹪, Cu 0.47 ﹪, Sn：0.28 ﹪, Nb： 0.087 ﹪,：Ag 0.069 ﹪, Cr：0.059 ﹪, Pr：0.068 ﹪, Mo：0.087 ﹪, surplus is Al and inevitable Impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 12.7 parts of niter cake, 10.8 parts of fluotitanic acid, 9 parts of hydrofluoric acid, 2.8 parts of zirconium nitrate, 1.7 parts of dodecyl sodium sulfate, 34 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 34 parts of titanium nitride, 9 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 27 parts of acrylic resin, 14 parts of chromium chloride, 14 parts of talcum powder, 14 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.

Claims (2)

1. a kind of manufacture method of motor vehicle gearbox, the gearbox includes lower box and upper box, lower box and upper box It is connected to form in gearbox cavity, gearbox cavity and is provided with power transmission shaft and gear, the gear includes gear and gear The tungsten carbide coating of body surface, the upper box inner surface is coated with table in alumina series ceramic material layer, the lower box Face is coated with carbonization titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8-9 ﹪,： Fe：4-5 ﹪, Zn：2-3 ﹪, Mg：1-2 ﹪, Ti：0.7-0.8 ﹪, Mn 0.6-0.7 ﹪, Cu 0.4-0.5 ﹪, Sn：0.2- 0.3 ﹪, Nb：0.08-0.09 ﹪,：Ag 0.06-0.07 ﹪, Cr：0.05-0.06 ﹪, Pr：0.06-0.07 ﹪, Mo：0.08- 0.09 ﹪, surplus is Al and inevitable impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 10-13 parts of niter cake, 10-11 parts of fluotitanic acid, 5-10 parts of hydrofluoric acid, 2-3 parts of zirconium nitrate, 1-2 parts of dodecyl sodium sulfate, water 25-35 parts；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 30-35 parts of titanium nitride, 5-10 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating 60 DEG C/h of speed, is incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after cool again To 150 DEG C, 25 DEG C/h of rate of temperature fall is incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 20-30 parts of acrylic resin, 10-15 parts of chromium chloride, 10-15 parts of talcum powder, 10-15 parts of vanadic anhydride, dodecane 10 parts of base benzene sulfonic acid sodium salt, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water is obtained Final casing.
2. a kind of motor vehicle gearbox as claimed in claim 1, the gearbox includes lower box and upper box, lower box with Upper box, which is connected to form in gearbox cavity, gearbox cavity, is provided with power transmission shaft and gear, and the gear includes gear With the tungsten carbide coating on gear surface, the upper box inner surface is coated with alumina series ceramic material layer, the nowel Internal surface is coated with carbonization titanium series ceramic material layer, upper box and nowel external surface coating heat-resisting paint,
It is characterized in that：Gear by finishing is coated tungsten carbide coating, tungsten carbide material thickness degree 0.3mm, the gear after coating is heated, and is warming up to 500 DEG C, 20 DEG C/h of heating rate, is incubated 4 hours, after be cooled to 400 DEG C, 50 DEG C/h of rate of temperature fall is incubated 4 hours, after be cooled to 200 DEG C again, 30 DEG C/h of rate of temperature fall, insulation 5 is small When, after be air-cooled to room temperature, obtain being coated with the gear of tungsten carbide coating,
The upper box and lower box are aluminum alloy material, and aluminum alloy chemically composition is（Percentage by weight）：Ni：8.6 ﹪,： Fe：4.6 ﹪, Zn：2.7 ﹪, Mg：1.8 ﹪, Ti：0.76 ﹪, Mn 0.67 ﹪, Cu 0.47 ﹪, Sn：0.28 ﹪, Nb： 0.087 ﹪,：Ag 0.069 ﹪, Cr：0.059 ﹪, Pr：0.068 ﹪, Mo：0.087 ﹪, surplus is Al and inevitable Impurity；
The preparation method of upper box and lower box：Comprise the following steps：According to above-mentioned aluminum alloy chemical composition dispensing, first by aluminium ingot It is added in smelting furnace, Control for Kiln Temperature is at 720 DEG C, and after after aluminium ingot fusing, temperature of aluminum liquid is raised to 730 DEG C and adds conjunction in the middle of nickel aluminium Gold, after by furnace temperature be increased to 735 DEG C addition iron aluminium intermediate alloys；Furnace temperature is increased to 740 DEG C of addition zinc-aluminium intermediate alloys afterwards；Afterwards Furnace temperature is increased to 745 DEG C and adds other alloying elements, rear furnace temperature is increased to 760 DEG C, refining cleanser is added, refines cleanser Addition is the 0.8% of furnace charge amount, is stirred 40 minutes, stands 60 minutes, treats that slag is separated with molten metal, skim, rear to add covering Agent, skims, upper box and lower box is poured into a mould respectively afterwards again after standing 30 minutes；Pouring temperature is 740 DEG C；Obtain Upper box and lower box be heat-treated：Upper box and lower box are heated first, 580 DEG C, heating rate are warming up to 50 DEG C/h, 2 hours are incubated, Quenching Treatment is carried out afterwards, hardening media is water, by upper box and lower box from room after quenching Temperature is heated to 500 DEG C, 100 DEG C/h of heating rate, is incubated 7 hours, after be cooled to 300 DEG C, 50 DEG C/h of rate of temperature fall is protected Temperature 3 hours, after be cooled to 200 DEG C again, 50 DEG C/h of rate of temperature fall is incubated 9 hours, after be air-cooled to room temperature, the refining is net Agent includes：Aluminium chloride 60%, aluminum nitrate 20%, potassium chloride 10%, sodium nitrate 5%, manganese chloride 5%, the coverture bag Include：Aluminum sulfate 40%, barium sulfate 20%, sodium chloride 10%；Aluminium fluoric acid sodium 10%；Aluminum oxide 10%, sodium fluoride 10%, coverture Total addition is the 0.8% of furnace charge amount,
Processing is passivated to upper box and lower box surface afterwards, wherein：Passivating solution is constituted（Weight）：9 parts of frerrous chloride, 12.7 parts of niter cake, 10.8 parts of fluotitanic acid, 9 parts of hydrofluoric acid, 2.8 parts of zirconium nitrate, 1.7 parts of dodecyl sodium sulfate, 34 parts of water；
Alumina series ceramic material is coated to upper box inner surface afterwards；By being coated in the formation oxidation of upper box inner surface Aluminium series ceramic material layer, alumina series ceramic material layer thickness 0.5mm, alumina series ceramic material layer includes（Weight）：Oxidation 40 parts of aluminium, 34 parts of titanium nitride, 9 parts of titanium oxide is heated the upper box after coating, is warming up to 400 DEG C, heating rate 60 DEG C/h, be incubated 4 hours, after be cooled to 300 DEG C, 75 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 25 DEG C/h of rate of temperature fall, be incubated 7 hours, after be air-cooled to room temperature,
Carbonization titanium series ceramic material is coated to lower box inner surface afterwards；By being coated in the formation carbonization of lower box inner surface Titanium series ceramic material layer, be carbonized titanium series ceramic material thickness degree 0.5mm, and carbonization titanium series ceramic material layer includes（Weight）：Carbonization 40 parts of titanium, 5 parts of silicon nitride, 5 parts of silica is heated the lower box after coating, is warming up to 350 DEG C, heating rate 50 DEG C/h, be incubated 4 hours, after be cooled to 250 DEG C, 100 DEG C/h of rate of temperature fall is incubated 3 hours, after be cooled to 150 again DEG C, 75 DEG C/h of rate of temperature fall, be incubated 6 hours, after be air-cooled to room temperature,
Heat-resisting paint is coated to upper box and nowel external surface afterwards；The coating includes（Weight）：Polyethersulfone resin 60 parts, 27 parts of acrylic resin, 14 parts of chromium chloride, 14 parts of talcum powder, 14 parts of vanadic anhydride, neopelex 10 Part, 5 parts of ethylenediamine, 3 parts of zinc molybdate, 3 parts of trbasic zinc phosphate, 2 parts of methylcellulose, 100 parts of deionized water obtains final casing.
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CN106402341B (en) * 2016-10-14 2018-07-17 南京创贝高速传动机械有限公司 A kind of high-speed fan is with applying mechanically high-speed gear box
CN107475574A (en) * 2017-09-22 2017-12-15 马鞍山松鹤信息科技有限公司 A kind of compound aluminium product and its preparation technology

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