CN106756552A - A kind of production technology of wear-resistant gear - Google Patents
A kind of production technology of wear-resistant gear Download PDFInfo
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- CN106756552A CN106756552A CN201611158789.9A CN201611158789A CN106756552A CN 106756552 A CN106756552 A CN 106756552A CN 201611158789 A CN201611158789 A CN 201611158789A CN 106756552 A CN106756552 A CN 106756552A
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- resistant gear
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/007—Ferrous alloys, e.g. steel alloys containing silver
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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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
- C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
- C23D5/00—Coating with enamels or vitreous layers
- C23D5/02—Coating with enamels or vitreous layers by wet methods
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
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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
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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
- C04B2235/3427—Silicates other than clay, e.g. water glass
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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
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Abstract
The present invention relates to a kind of production technology of wear-resistant gear, its step is：(i) melting raw material；(ii) prepared by wax-pattern；(iii) shell model sand mold is made in step (ii) obtained wax-pattern, shell mould is obtained using steam dewaxing and shell mould roasting is carried out；(iv) roasting shell mould is put into the sandbox prepared by formative technology, forms sand mold；(v) pour into a mould；(vi) the casting after moulding by casting is heat-treated；(vii) the surface of the uniform dip-coating of polyethylene glycol polyelectrolyte aqueous solution wear-resistant gear after heat treatment is dipped, obtains being coated with the wear-resistant gear of polyethylene glycol polyelectrolyte；(viii) electroplate；(ix) the outer surface of the zn-ni alloy depositses of the wear-resistant gear covers china protective layer.The production technology of wear-resistant gear of the invention strengthens the heat-resisting and decay resistance of gear due to containing Zn, Ni and W in raw material.
Description
Technical field
The present invention relates to a kind of production technology of wear-resistant gear, belong to technical field of automobile.
Background technology
Gearbox generally refers to the gearbox of automobile.It is divided into manual, automatic two kinds, and manual transmission is mainly by gear
With axle composition, variable-speed torque-converting is produced by different gear combinations；And automatic gear-box AT is by hydraulic torque converter, planetary gear
With hydraulic control system composition, variable-speed torque-converting is reached by way of fluid power transmission and gear combination.But it is either manual
Gearbox or automatic gear-box are required for using gearbox gear.
Gearbox gear often works in the case of rotating speed high, high load capacity, rotating speed and the continuous alternation of load.Gear except
Outside due to normal wear, can also due to lubricating oil quality, lubricating condition is bad, driver behavior is improper, maintenance when gear assembling phase
The reason such as mutually gnaw conjunction position is improper, can cause gear to impact, the gear teeth are gnawed and close bad and starting shake etc., can all accelerate tooth
The abrasion and damage of wheel.Gear is to rely on the physical dimension and the strength of materials of itself to bear external applied load, and this requires material
With higher-strength toughness and wearability；Because gear shape is complicated, accuracy of gear requirement is high, also requires that material technology is good.
The content of the invention
The technical problem to be solved in the present invention is, in view of the shortcomings of the prior art, proposing a kind of resistance to roll flute of long service life
Wheel.
The present invention is that the technical scheme for solving above-mentioned technical problem proposition is：A kind of production technology of wear-resistant gear, including
Following steps：
(i) melting raw material：
A, dispensing
The mass percent of each composition is in the wear-resistant gear：
C：0.05-0.15%, Cr：0.01-0.03%, Mn：0.38-0.45%, Zn：1.16-1.28%, Cu：1.23-1.35%, Ag：
0.62-0.86%, Au：0.33-0.49%, Pt：0.18-0.25%, Ni：1.37-1.56%, W：1.16-1.35%, Mo：0.01-
0.03%, Ce：0.01-0.03%, Eu：0.01-0.04%, Lu:0.05-0.08%, Ti：1.18-1.93%, AlN：0.25-
0.42%, S≤0.003%, P≤0.003%, talcum powder:0.27-0.36%, magnesia：0.19-0.25%, tungsten carbide:0.11-
0.16%, balance of Fe；
B, added raw materials into smelting furnace by the mass percent of each composition in predetermined wear-resistant gear, the temperature in smelting furnace is improved
To 1500 degrees Celsius to 1530 degrees Celsius, raw material is smelted to form alloy solution；
C, alloy solution obtained in the previous step is cooled down, water-cooled is combined with air cooling during cooling, first uses water-cooled with 25-28
DEG C/cooldown rate of s by alloy solution water-cooled to 600-650 DEG C of formation alloy, be then air cooled to 360-380 DEG C, then using water
The cold cooldown rate with 14-19 DEG C/s is by alloy water-cooled to room temperature；
D, heating, the alloy after previous step is cooled down are added in smelting furnace and carry out secondary smelting, and the temperature in smelting furnace is brought up to
1550 degrees Celsius to 1600 degrees Celsius, alloy forms alloy solution by secondary smelting；
E, it is sprinkled into swelling perlite powder on alloy solution surface, twice of slag hitting after the completion of slag hitting, forms alloy to be cast molten
Liquid, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, wax-pattern consistent with wear-resistant gear size and including insulated feeder is made, and it is right
Wax-pattern is repaired, and wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell model sand mold is made in step (ii) obtained wax-pattern, shell mould is obtained using steam dewaxing and shell mould roasting is carried out；
(iv) roasting shell mould is put into the sandbox prepared by formative technology, blend compounds band is sealed and be used on the shell mould what is poured into a mould
Cast gate and insulated feeder, are then placed in the mixed sand by preparing, and ram-jolt, shape are carried out with foundry jolter again after piling mixed sand
Into sand mold；
(v) pour into a mould
Baking 30-45 minutes, during cast, pouring temperature are carried out to shell mould with the air-heater of 200~250 degrees Celsius of constant temperature before cast
It it is 1380~1400 degrees Celsius, after cast, casting is incubated 0.5~2 hour in sand mold；After moulding by casting, the demoulding is carried out, crushed
Shell mould, cuts off the insulated feeder of casting, obtains casting；
(vi) the casting after moulding by casting is heat-treated, concrete technology is：
A, quenching：Casting quenching and preserving heat temperature is 700 DEG C ± 20 DEG C, and soaking time is 3.5~4.5h；Casting Quench heating is completed
Tank water-cooled is quickly put into afterwards 55-75 minutes, cooling bath water temperature is controlled at 25~35 DEG C；
C, once it is tempered：After casting is heated into 660-675 DEG C of tempering 45-50min, warm 30-45s is treated, make casting temperature uniform
Change, after accelerating to be cooled to 250-300 DEG C with the cooldown rate of 25-28 DEG C/s afterwards, then be air cooled to room temperature；
D, double tempering：Room temperature is air cooled to after casting is heated into 550-600 DEG C of tempering 35-45min；
(vii) the surface of the uniform dip-coating of polyethylene glycol polyelectrolyte aqueous solution wear-resistant gear after heat treatment is dipped, is placed in afterwards
0.5-1 hours in 65-80 DEG C of baking oven, obtain being coated with the wear-resistant gear of polyethylene glycol polyelectrolyte；
(viii) electroplate：The cast(ing) surface electroplated zinc nickel alloy coating of polyethylene glycol polyelectrolyte is being coated with, zn-ni alloy depositses are thick
Spend is 60 ± 10 μm；
(ix) the outer surface of the zn-ni alloy depositses of the wear-resistant gear covers china protective layer, and concrete technology is:
A, dispensing：The mass percent composition of each composition is in china protective layer：Tungsten carbide：2.35-2.43%, zinc powder：1.65-
1.83%th, montmorillonite：3.43-3.55%, wollastonite：2.23-2.43%, diopside：3.35-3.53%, quartz:1.67-1.82%、
Feldspar:2.11-2.35%, bone black：4.56-4.67%, talcum powder：2.33-2.65%, aluminium powder：3.42-3.57%, balance of kaolinite
Soil；
B, crushing:Mixing and ball milling is carried out during each raw material of china protective layer is added into ball mill by mass percentage, water shape is added
Into glaze slip；
C, except iron sieving：Above-mentioned glaze slip is filtered with the screen cloth of 550 mesh to 600, iron is removed with tramp iron separator after filtering；
Operation is stirred in d, filter：Water unnecessary in glaze slip in elimination previous step, the moisture content of glaze slip is in 22-25% after filter；
E, the glaze slip after filter is put into vacuum deairing machine carries out pugging, vacuum is 0.05-0.09Mpa；
F, coating：The glaze slip that will be modulated is coated in the outer surface of the zn-ni alloy depositses of wear-resistant gear, and thickness is 0.55-
1.15mm；
G, low temperature drying：Granular filler feeding low-temperature drier after shaping is carried out into low temperature drying, it is 52- to control drying temperature
64 DEG C, dry to shaping filler moisture content and be less than 6%；
H, roasting：By the wear-resistant gear feeding tunnel cave roasting after low temperature drying, china protective layer is formed after cooling, be obtained wear-resisting
Gear.
The improvement of above-mentioned technical proposal is：Step (i) described in wear-resistant gear the mass percent of each composition be：
C：0.05%, Cr：0.01%, Mn：0.38%, Zn：1.16%, Cu：1.23%, Ag：0.62%, Au：0.33%, Pt：0.18%,
Ni：1.37%, W：1.16%, Mo：0.01%, Ce：0.01%, Eu：0.01%, Lu:0.05%, Ti：1.18%, AlN：0.25%, S≤
0.003%, P≤0.003%, talcum powder:0.27%, magnesia：0.19%, tungsten carbide:0.11%, balance of Fe.
The improvement of above-mentioned technical proposal is：Step (i) described in wear-resistant gear the mass percent of each composition be：
C：0.15%, Cr：0.03%, Mn：0.45%, Zn：1.28%, Cu：1.35%, Ag：0.86%, Au：0.49%, Pt：0.25%,
Ni：1.56%, W：1.35%, Mo：0.03%, Ce：0.03%, Eu：0.04%, Lu:0.08%, Ti：1.93%, AlN：0.42%, S≤
0.003%, P≤0.003%, talcum powder:0.36%, magnesia：0.25%, tungsten carbide:0.16%, balance of Fe.
The present invention is using the beneficial effect of above-mentioned technical proposal：
（1）Wear-resistant gear of the invention strengthens the heat-resisting and decay resistance of gear due to containing Zn, Ni and W in raw material；
（2）Wear-resistant gear of the invention alleviates the quality of gear due to containing Ti, Al and rare earth element in raw material, increased
Structural strength and decay resistance；
（3）Wear-resistant gear of the invention is due to having carried out secondary smelting, then the cooperation for passing through slag hitting in raw material melting so that former
Material melting is more thorough, can effectively remove the impurity in raw material, improves casting quality；
（4）Wear-resistant gear of the invention to shell mould with the air-heater of constant temperature due in pouring operation, being toasted, by shell
The preheating of mould effectively prevents the shell mould in cast from cracking occurring and crushes；
（5）Due to being heat-treated to casting, can control gear is laterally and longitudinally recessed what is caused to wear-resistant gear of the invention
Face crack, and gear surface layer can be made to produce the residual stress opposite with working stress, part work can be offset during stand under load should
Power, increases service life；
（6）Wear-resistant gear of the invention due to heat treatment when by double tempering, tempering for the first time can rotary austenite in plate
Formed on bar circle or lath beam circle, and alloying element is further enriched with insulating process to improve stability；Ferrite lath
Beam is then replied in insulating process, while the harmful element in ferrite is also discharged in rotary austenite, so as to improve
Substrate performance；Second tempering can make rotary austenite be enriched with enough alloying elements on the premise of proof strength,
Make few net carbide, be more uniformly distributed tissue, can holding structure stabilization, further enhance contact fatigue strength and impact it is tough
Property；
（7）Wear-resistant gear of the invention coats polyethylene glycol polyelectrolyte due to cast(ing) surface, so as to improve follow-up plating behaviour
The quality of work so that it is even closer uniform that zn-ni alloy depositses are covered, and effectively prevents coating from coming off；
（8）Wear-resistant gear of the invention covers china protective layer due to zn-ni alloy depositses outer surface, can effective protective coating,
Coating is worn in the course of the work to prevent gear, by the protection of china protective layer, not only ensure that the high temperature resistant of gear is resistance to
Corrosive nature, further improves the structural strength of gear surface, make gear more wear-resisting, increase the service life.
Specific embodiment
Embodiment one
The production technology of the wear-resistant gear of the present embodiment, comprises the following steps：
(i) melting raw material：
A, dispensing
The mass percent of each composition is in the wear-resistant gear：
C：0.05%, Cr：0.01%, Mn：0.38%, Zn：1.16%, Cu：1.23%, Ag：0.62%, Au：0.33%, Pt：0.18%,
Ni：1.37%, W：1.16%, Mo：0.01%, Ce：0.01%, Eu：0.01%, Lu:0.05%, Ti：1.18%, AlN：0.25%, S≤
0.003%, P≤0.003%, talcum powder:0.27%, magnesia：0.19%, tungsten carbide:0.11%, balance of Fe；
B, added raw materials into smelting furnace by the mass percent of each composition in predetermined wear-resistant gear, the temperature in smelting furnace is improved
To 1500 degrees Celsius to 1530 degrees Celsius, raw material is smelted to form alloy solution；
C, alloy solution obtained in the previous step is cooled down, water-cooled is combined with air cooling during cooling, first uses water-cooled with 25-28
DEG C/cooldown rate of s by alloy solution water-cooled to 600-650 DEG C of formation alloy, be then air cooled to 360-380 DEG C, then using water
The cold cooldown rate with 14-19 DEG C/s is by alloy water-cooled to room temperature；
D, heating, the alloy after previous step is cooled down are added in smelting furnace and carry out secondary smelting, and the temperature in smelting furnace is brought up to
1550 degrees Celsius to 1600 degrees Celsius, alloy forms alloy solution by secondary smelting；
E, it is sprinkled into swelling perlite powder on alloy solution surface, twice of slag hitting after the completion of slag hitting, forms alloy to be cast molten
Liquid, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, wax-pattern consistent with wear-resistant gear size and including insulated feeder is made, and it is right
Wax-pattern is repaired, and wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell model sand mold is made in step (ii) obtained wax-pattern, shell mould is obtained using steam dewaxing and shell mould roasting is carried out；
(iv) roasting shell mould is put into the sandbox prepared by formative technology, blend compounds band is sealed and be used on the shell mould what is poured into a mould
Cast gate and insulated feeder, are then placed in the mixed sand by preparing, and ram-jolt, shape are carried out with foundry jolter again after piling mixed sand
Into sand mold；
(v) pour into a mould
Baking 30-45 minutes, during cast, pouring temperature are carried out to shell mould with the air-heater of 200~250 degrees Celsius of constant temperature before cast
It it is 1380~1400 degrees Celsius, after cast, casting is incubated 0.5~2 hour in sand mold；After moulding by casting, the demoulding is carried out, crushed
Shell mould, cuts off the insulated feeder of casting, obtains casting；
(vi) the casting after moulding by casting is heat-treated, concrete technology is：
A, quenching：Casting quenching and preserving heat temperature is 700 DEG C ± 20 DEG C, and soaking time is 3.5~4.5h；Casting Quench heating is completed
Tank water-cooled is quickly put into afterwards 55-75 minutes, cooling bath water temperature is controlled at 25~35 DEG C；
C, once it is tempered：After casting is heated into 660-675 DEG C of tempering 45-50min, warm 30-45s is treated, make casting temperature uniform
Change, after accelerating to be cooled to 250-300 DEG C with the cooldown rate of 25-28 DEG C/s afterwards, then be air cooled to room temperature；
D, double tempering：Room temperature is air cooled to after casting is heated into 550-600 DEG C of tempering 35-45min；
(vii) the surface of the uniform dip-coating of polyethylene glycol polyelectrolyte aqueous solution wear-resistant gear after heat treatment is dipped, is placed in afterwards
0.5-1 hours in 65-80 DEG C of baking oven, obtain being coated with the wear-resistant gear of polyethylene glycol polyelectrolyte；
(viii) electroplate：The cast(ing) surface electroplated zinc nickel alloy coating of polyethylene glycol polyelectrolyte is being coated with, zn-ni alloy depositses are thick
Spend is 60 ± 10 μm；
(ix) the outer surface of the zn-ni alloy depositses of the wear-resistant gear covers china protective layer, and concrete technology is:
A, dispensing：The mass percent composition of each composition is in china protective layer：Tungsten carbide：2.35-2.43%, zinc powder：1.65-
1.83%th, montmorillonite：3.43-3.55%, wollastonite：2.23-2.43%, diopside：3.35-3.53%, quartz:1.67-1.82%、
Feldspar:2.11-2.35%, bone black：4.56-4.67%, talcum powder：2.33-2.65%, aluminium powder：3.42-3.57%, balance of kaolinite
Soil；
B, crushing:Mixing and ball milling is carried out during each raw material of china protective layer is added into ball mill by mass percentage, water shape is added
Into glaze slip；
C, except iron sieving：Above-mentioned glaze slip is filtered with the screen cloth of 550 mesh to 600, iron is removed with tramp iron separator after filtering；
Operation is stirred in d, filter：Water unnecessary in glaze slip in elimination previous step, the moisture content of glaze slip is in 22-25% after filter
E, the glaze slip after filter is put into vacuum deairing machine carries out pugging, vacuum is 0.05-0.09Mpa
F, coating：The glaze slip that will be modulated is coated in the outer surface of the zn-ni alloy depositses of wear-resistant gear, and thickness is 0.55-
1.15mm；
G, low temperature drying：Granular filler feeding low-temperature drier after shaping is carried out into low temperature drying, it is 52- to control drying temperature
64 DEG C, dry to shaping filler moisture content and be less than 6%；
H, roasting：By the wear-resistant gear feeding tunnel cave roasting after low temperature drying, china protective layer is formed after cooling, be obtained wear-resisting
Gear.
Embodiment two
The wear-resistant gear of the present embodiment is essentially identical with embodiment one, and difference is that its mass percent composition is：C：
0.15%, Cr：0.03%, Mn：0.45%, Zn：1.28%, Cu：1.35%, Ag：0.86%, Au：0.49%, Pt：0.25%, Ni：
1.56%, W：1.35%, Mo：0.03%, Ce：0.03%, Eu：0.04%, Lu:0.08%, Ti：1.93%, AlN：0.42%, S≤
0.003%, P≤0.003%, talcum powder:0.36%, magnesia：0.25%, tungsten carbide:0.16%, balance of Fe.
The present invention is not limited to above-described embodiment.The technical scheme that all use equivalents are formed, all falling within the present invention will
The protection domain asked.
Claims (3)
1. a kind of production technology of wear-resistant gear, it is characterised in that：Comprise the following steps：
(i) melting raw material：
A, dispensing
The mass percent of each composition is in the wear-resistant gear：
C：0.05-0.15%, Cr：0.01-0.03%, Mn：0.38-0.45%, Zn：1.16-1.28%, Cu：1.23-1.35%, Ag：
0.62-0.86%, Au：0.33-0.49%, Pt：0.18-0.25%, Ni：1.37-1.56%, W：1.16-1.35%, Mo：0.01-
0.03%, Ce：0.01-0.03%, Eu：0.01-0.04%, Lu:0.05-0.08%, Ti：1.18-1.93%, AlN：0.25-
0.42%, S≤0.003%, P≤0.003%, talcum powder:0.27-0.36%, magnesia：0.19-0.25%, tungsten carbide:0.11-
0.16%, balance of Fe；
B, added raw materials into smelting furnace by the mass percent of each composition in predetermined wear-resistant gear, the temperature in smelting furnace is improved
To 1500 degrees Celsius to 1530 degrees Celsius, raw material is smelted to form alloy solution；
C, alloy solution obtained in the previous step is cooled down, water-cooled is combined with air cooling during cooling, first uses water-cooled with 25-28
DEG C/cooldown rate of s by alloy solution water-cooled to 600-650 DEG C of formation alloy, be then air cooled to 360-380 DEG C, then using water
The cold cooldown rate with 14-19 DEG C/s is by alloy water-cooled to room temperature；
D, heating, the alloy after previous step is cooled down are added in smelting furnace and carry out secondary smelting, and the temperature in smelting furnace is brought up to
1550 degrees Celsius to 1600 degrees Celsius, alloy forms alloy solution by secondary smelting；
E, it is sprinkled into swelling perlite powder on alloy solution surface, twice of slag hitting after the completion of slag hitting, forms alloy to be cast molten
Liquid, was poured in five minutes；
(ii) prepared by wax-pattern：Using mechanical casting, wax-pattern consistent with wear-resistant gear size and including insulated feeder is made, and it is right
Wax-pattern is repaired, and wax-pattern is cleaned using wax base cleaning agent afterwards；
(iii) shell model sand mold is made in step (ii) obtained wax-pattern, shell mould is obtained using steam dewaxing and shell mould roasting is carried out；
(iv) roasting shell mould is put into the sandbox prepared by formative technology, blend compounds band is sealed and be used on the shell mould what is poured into a mould
Cast gate and insulated feeder, are then placed in the mixed sand by preparing, and ram-jolt, shape are carried out with foundry jolter again after piling mixed sand
Into sand mold；
(v) pour into a mould
Baking 30-45 minutes, during cast, pouring temperature are carried out to shell mould with the air-heater of 200~250 degrees Celsius of constant temperature before cast
It it is 1380~1400 degrees Celsius, after cast, casting is incubated 0.5~2 hour in sand mold；After moulding by casting, the demoulding is carried out, crushed
Shell mould, cuts off the insulated feeder of casting, obtains casting；
(vi) the casting after moulding by casting is heat-treated, concrete technology is：
A, quenching：Casting quenching and preserving heat temperature is 700 DEG C ± 20 DEG C, and soaking time is 3.5~4.5h；Casting Quench heating is completed
Tank water-cooled is quickly put into afterwards 55-75 minutes, cooling bath water temperature is controlled at 25~35 DEG C；
C, once it is tempered：After casting is heated into 660-675 DEG C of tempering 45-50min, warm 30-45s is treated, make casting temperature uniform
Change, after accelerating to be cooled to 250-300 DEG C with the cooldown rate of 25-28 DEG C/s afterwards, then be air cooled to room temperature；
D, double tempering：Room temperature is air cooled to after casting is heated into 550-600 DEG C of tempering 35-45min；
(vii) the surface of the uniform dip-coating of polyethylene glycol polyelectrolyte aqueous solution wear-resistant gear after heat treatment is dipped, is placed in afterwards
0.5-1 hours in 65-80 DEG C of baking oven, obtain being coated with the wear-resistant gear of polyethylene glycol polyelectrolyte；
(viii) electroplate：The cast(ing) surface electroplated zinc nickel alloy coating of polyethylene glycol polyelectrolyte is being coated with, zn-ni alloy depositses are thick
Spend is 60 ± 10 μm；
(ix) the outer surface of the zn-ni alloy depositses of the wear-resistant gear covers china protective layer, and concrete technology is:
A, dispensing：The mass percent composition of each composition is in china protective layer：Tungsten carbide：2.35-2.43%, zinc powder：1.65-
1.83%th, montmorillonite：3.43-3.55%, wollastonite：2.23-2.43%, diopside：3.35-3.53%, quartz:1.67-1.82%、
Feldspar:2.11-2.35%, bone black：4.56-4.67%, talcum powder：2.33-2.65%, aluminium powder：3.42-3.57%, balance of kaolinite
Soil；
B, crushing:Mixing and ball milling is carried out during each raw material of china protective layer is added into ball mill by mass percentage, water shape is added
Into glaze slip；
C, except iron sieving：Above-mentioned glaze slip is filtered with the screen cloth of 550 mesh to 600, iron is removed with tramp iron separator after filtering；
Operation is stirred in d, filter：Water unnecessary in glaze slip in elimination previous step, the moisture content of glaze slip is in 22-25% after filter；
E, the glaze slip after filter is put into vacuum deairing machine carries out pugging, vacuum is 0.05-0.09Mpa；
F, coating：The glaze slip that will be modulated is coated in the outer surface of the zn-ni alloy depositses of wear-resistant gear, and thickness is 0.55-
1.15mm；
G, low temperature drying：Granular filler feeding low-temperature drier after shaping is carried out into low temperature drying, it is 52- to control drying temperature
64 DEG C, dry to shaping filler moisture content and be less than 6%；
H, roasting：By the wear-resistant gear feeding tunnel cave roasting after low temperature drying, china protective layer is formed after cooling, be obtained wear-resisting
Gear.
2. the production technology of wear-resistant gear according to claim 1, it is characterised in that：Step (i) described in wear-resistant gear
In the mass percent of each composition be：
C：0.05%, Cr：0.01%, Mn：0.38%, Zn：1.16%, Cu：1.23%, Ag：0.62%, Au：0.33%, Pt：0.18%,
Ni：1.37%, W：1.16%, Mo：0.01%, Ce：0.01%, Eu：0.01%, Lu:0.05%, Ti：1.18%, AlN：0.25%, S≤
0.003%, P≤0.003%, talcum powder:0.27%, magnesia：0.19%, tungsten carbide:0.11%, balance of Fe.
3. the production technology of wear-resistant gear according to claim 1, it is characterised in that：Step (i) described in wear-resistant gear
The mass percent of each composition is：
C：0.15%, Cr：0.03%, Mn：0.45%, Zn：1.28%, Cu：1.35%, Ag：0.86%, Au：0.49%, Pt：0.25%,
Ni：1.56%, W：1.35%, Mo：0.03%, Ce：0.03%, Eu：0.04%, Lu:0.08%, Ti：1.93%, AlN：0.42%, S≤
0.003%, P≤0.003%, talcum powder:0.36%, magnesia：0.25%, tungsten carbide:0.16%, balance of Fe.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107604148A (en) * | 2017-08-11 | 2018-01-19 | 常熟市明瑞针纺织有限公司 | A kind of high accuracy compiles the processing technology of flower cam |
| CN107904362A (en) * | 2017-11-14 | 2018-04-13 | 郑媛媛 | A kind of processing technology of the valve door handle with china sheath |
| CN107916360A (en) * | 2017-11-14 | 2018-04-17 | 郑媛媛 | A kind of production technology of high-strength abrasion-proof safety valve |
| CN114016102A (en) * | 2021-12-07 | 2022-02-08 | 中国第一汽车股份有限公司 | Surface treatment process for standard part |
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| CN103350205A (en) * | 2013-06-07 | 2013-10-16 | 马鞍山市恒毅机械制造有限公司 | Centrifugal casting method for engine cylinder sleeve |
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Cited By (4)
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| CN107604148A (en) * | 2017-08-11 | 2018-01-19 | 常熟市明瑞针纺织有限公司 | A kind of high accuracy compiles the processing technology of flower cam |
| CN107904362A (en) * | 2017-11-14 | 2018-04-13 | 郑媛媛 | A kind of processing technology of the valve door handle with china sheath |
| CN107916360A (en) * | 2017-11-14 | 2018-04-17 | 郑媛媛 | A kind of production technology of high-strength abrasion-proof safety valve |
| CN114016102A (en) * | 2021-12-07 | 2022-02-08 | 中国第一汽车股份有限公司 | Surface treatment process for standard part |
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