CN107794417B - A kind of production technology of motor case - Google Patents
A kind of production technology of motor case Download PDFInfo
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- CN107794417B CN107794417B CN201710983738.8A CN201710983738A CN107794417B CN 107794417 B CN107794417 B CN 107794417B CN 201710983738 A CN201710983738 A CN 201710983738A CN 107794417 B CN107794417 B CN 107794417B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
- C25D11/08—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used containing inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of production technologies of motor case, it is desirable to provide a kind of easy making process, the motor case production technology that the utilization rate of material is abundant, corrosion-resistant and practical, its key points of the technical solution are that the following steps are included: (1) selection；(2) casting technique；(3) degreasing process；(4) coating process；(5) it forms.The present invention is suitable for the production technology of motor case.
Description
Technical field
The present invention relates to a kind of production technologies of motor case.
Background technique
Currently, production technology of the tradition for motor case, complex, some uses drawing process and turnup work
Skill, but the material that such producing process is wasted is more, cannot ensure making full use of for material, and melting again
When refining surplus material, the step of increasing recycling, it cannot be guaranteed that easy integrated molding effect.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of easy making process, the utilization rate of material
Sufficiently, corrosion-resistant and practical motor case production technology.
To achieve the above object, the present invention provides the following technical scheme that a kind of production technology of motor case, including with
Lower step: (1) selection: A356-T6 aluminium is chosen, aluminium composition and respectively forms component content are as follows: Si6.5~7.5,
Mg0.3~0.45, Fe < 0.12, Cu < 0.1, Zn < 0.05, Mn < 0.05, Ti < 0.2；
(2) it casting technique: the selection of A. mold: is opened according to the structure choice mold of required casting, and by mold design at 6
Mode structure, in addition to upper lower open die, periphery 4 is opened, and using the core pulling cylinder on air injection machine；
B. melting: being melted to 800-850 DEG C for aluminium melting, is handled by GBF and is refined to aluminium alloy, degasification removes
Slag, and the molten aluminum after refining degasification is transferred in the protection stove of low pressure casting machine after standing 10min, and molten aluminum control to be cast
System is between 690 DEG C~700 DEG C；C. it is poured: according to casting quality, the volume and weight of casting, being carried out using following steps: I
The liquid stage is risen, II fills the type stage, III packing stage, in five stages of IV release stage and V cooling stage, controls each stage
Time and cavity pressure；
(3) degreasing process: D. preparation: mould casting to be processed, spray chamber, degreasing spray pump, a certain amount of alkalescent
Degreaser, brush roll, a certain amount of neutral degreaser, neutralization chamber, rinsing bowl, electrolytic bath, drying box and cooling fan；
E. degreasing: I, send mould casting to be processed to spray chamber, using alkalescent degreaser, carries out preliminary degreasing, leads to
It crosses degreasing spray pump and is sprayed to degreaser in mould casting to be processed through nozzle from pump line；II, will be formed obtained by above-mentioned steps
Casting scrubs the upper and lower surface of mould casting by brush roll, and neutral degreaser is carried out pressurization by degreasing spray pump and is sprayed onto
In mould casting；III, send mould casting obtained by above-mentioned steps to neutralization chamber, is dipped to and neutralizes in indoor neutral degreaser,
To achieve the purpose that thorough degreasing；
F. aoxidize: mould casting obtained by step E is rinsed by I, by rinsing bowl；II, will be formed obtained by above-mentioned steps
Casting is placed in electrolytic bath, by chromic acid anodizing method, using chromic acid solution as electrolyte, using aluminium sheet as anode, stone
Ink be used as cathode material, and the concentration of chromic acid be 90g/L-100g/L, by temperature control between 34 DEG C -40 DEG C, electric current it is close
Degree control is in 0.3A/dm2-2.5A/dm2Between, voltage controls between 0-40V and (does not include 0V), and oxidization time makes in 35min
Mould casting surface forms oxidation film；III, is thoroughly cleaned mould casting obtained by above-mentioned steps, by drying box and cold
Fan is dried and is cooled down；
(4) coating process: G, preparation: mould casting, paint obtained by step (3), blender, air pressure diaphragm pump, spray booth,
Paint baking oven and ice water circulation heat exchanger；
H, coating: I, will be painted and is stirred uniformly by blender, and viscosity needed for adjustment is painted is thickened by addition
Agent, will be using paint viscosity control between 2000-2500mPas；II, is by using air pressure diaphragm pump as spraying power
Spray booth is dried using the finishing of aerial spraying for source, shadow of the water content to aerial spraying in reduction air
It rings, is repeatedly sprayed, by the pressure control of spraying in 70-89kg/cm when spraying2Between, spraying time control in 60s-
Between 85s, so that paint is uniformly coated on mould casting surface in air pressure diaphragm pump；III, casts molding obtained by above-mentioned steps
Part is placed in paint baking oven and carries out paint baking；
I, cooling: mould casting obtained by above-mentioned steps is cooled down by ice water circulation heat exchanger, in order to
It collects；
(5) it forms: polishing grinding, packed products.
The present invention is further arranged to: the time control in the liter liquid stage of the step C in step (2) casting technique exists
Between 6s-8s, cavity pressure is controlled between 10kPa-15kPa, and the time for filling the type stage controls between 38s-45s, is protected
The time in pressure stage controls between 320s-400s, fills the type stage and packing stage needs to control cavity pressure
Between 30kPa-35kPa, the time in release stage is controlled within 6s, and the time of cooling stage controls between 250s-300s.
The present invention is further arranged to: the concentration of the chromic acid in step (1) degreasing process in step F is 50g/L-
55g/L, by temperature control between 38 DEG C -43 DEG C, the density domination of electric current is in 0.3A/dm2-0.7A/dm2Between, voltage control
(0V is not included) between 0-40V, oxidization time makes mould casting surface form oxidation film in 60min-65min.
The present invention is further arranged to: the concentration of the chromic acid in step (1) degreasing process in step F is 30g/L-
35g/L, by temperature control between 40 DEG C -45 DEG C, the density domination of electric current is in 0.2A/dm2-0.6A/dm2Between, voltage control
Between 0-40V (not including 0V), oxidization time makes mould casting surface form oxidation film in 60min-65min.
The present invention is further arranged to: by the above-mentioned CrO for being immersed in 20g/L by the resulting mould casting of step F3Solution
In, 5~15s of Passivation Treatment, is then dried at a temperature of being lower than 50 DEG C at room temperature.
By using above-mentioned technical proposal, the utility model has the advantages that (1) is with five selection, casting, degreasing, coating and packaging steps
Suddenly the production technology formed, it is ensured that procedure of processing is convenient, in the selection to material, by choosing A356-T6 aluminium, melting
When, good fluidity, contraction is small, casting is fine and close, is not likely to produce casting crack, has good casting character and etch resistant properties
It is the characteristic of the material by force；
(2), need to be by mold design at 6 mold-opening structures, in addition to upper lower open die when choosing mold, periphery 4 is opened, and is used
Core pulling cylinder on air injection machine, it is ensured that good casting convenience, and improve the effect of molding；
(3) it is cast by using the mode of low pressure casting, is then further reduced the defeated pine of shrinkage cavity, improves aluminium component
Consistency and good structural strength；
(4) in degreasing process, aluminum flake surface is made to form oxidation film by using chromic acid anodizing method, and aoxidize
Film it is relatively thin, usually between 2-5 microns, anticorrosion effect is good, and hole is few, is conventionally used as bottom when coating, and will
Resulting aluminium flake is dipped to CrO3Solution is radially passivated, and further improves corrosion resistance；
(5) in plastic spraying, by using the finishing of aerial spraying, cooperate the oxidation formed in degreasers' technique
Film, it is ensured that uniform using the spraying effect of this method.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of the production technology embodiment of motor case of the present invention.
Fig. 2 is time and the chamber pressure in a kind of present invention pouring technology each stage of the production technology embodiment of motor case
The comparison diagram of power.
Fig. 3 be a kind of production technology embodiment of motor case of the present invention each matching method of chromic acid anodizing method and
The table of comparisons of porosity.
Fig. 4 is a kind of spray pressure of the production technology embodiment of motor case of the present invention, spray time and forms coating
The reference table of thickness.
Specific embodiment
A kind of production technology embodiment of motor case of the present invention is described further referring to figs. 1 to Fig. 4.
Embodiment 1
A kind of production technology of motor case, comprising the following steps: (1) selection: A356-T6 aluminium, aluminium composition are chosen
Composition and respectively form component content are as follows: Si6.5~7.5, Mg0.3~0.45, Fe < 0.12, Cu < 0.1, Zn < 0.05, Mn < 0.05,
Ti<0.2；
(2) it casting technique: the selection of A. mold: is opened according to the structure choice mold of required casting, and by mold design at 6
Mode structure, in addition to upper lower open die, periphery 4 is opened, and using the core pulling cylinder on air injection machine；
B. melting: being melted to 800-850 DEG C for aluminium melting, is handled by GBF and is refined to aluminium alloy, degasification removes
Slag, and the molten aluminum after refining degasification is transferred in the protection stove of low pressure casting machine after standing 10min, and molten aluminum control to be cast
System is between 690 DEG C~700 DEG C；
C. be poured: according to casting quality, the volume and weight of casting, carried out using following steps: in I liter of liquid stage, II fills
Type stage, III packing stage, five stages of IV release stage and V cooling stage control time and the intracavitary pressure of type in each stage
Power specifically controls the time in liter liquid stage between 6s-8s, and cavity pressure controls between 10kPa-15kPa, fills type
The time in stage controls between 38s-45s, and the time of packing stage controls between 320s-400s, fills type stage and pressure maintaining
Stage needs to control cavity pressure between 30kPa-35kPa, and the time in release stage controls the cooling stage within 6s
Time control between 250s-300s, it is ensured that the abundant molding of casting improves the structural stability and intensity of casting；
(3) degreasing process: D. preparation: mould casting to be processed, spray chamber, degreasing spray pump, a certain amount of alkalescent
Degreaser, brush roll, a certain amount of neutral degreaser, neutralization chamber, rinsing bowl, electrolytic bath, drying box and cooling fan；
E. degreasing: I, send mould casting to be processed to spray chamber, using alkalescent degreaser, carries out preliminary degreasing, leads to
It crosses degreasing spray pump and is sprayed to degreaser in mould casting to be processed through nozzle from pump line；II, will be formed obtained by above-mentioned steps
Casting scrubs the upper and lower surface of mould casting by brush roll, and neutral degreaser is carried out pressurization by degreasing spray pump and is sprayed onto
In mould casting；III, send mould casting obtained by above-mentioned steps to neutralization chamber, is dipped to and neutralizes in indoor neutral degreaser,
To achieve the purpose that thorough degreasing；
F. aoxidize: mould casting obtained by step E is rinsed by I, by rinsing bowl；II, will be formed obtained by above-mentioned steps
Casting is placed in electrolytic bath, by chromic acid anodizing method, using chromic acid solution as electrolyte, using aluminium sheet as anode, stone
Ink be used as cathode material, and the concentration of chromic acid be 90g/L-100g/L, by temperature control between 34 DEG C -40 DEG C, electric current it is close
Degree control is in 0.3A/dm2-2.5A/dm2Between, voltage controls between 0-40V and (does not include 0V), and oxidization time makes in 35min
Mould casting surface forms oxidation film；III, is thoroughly cleaned mould casting obtained by above-mentioned steps, by drying box and cold
Fan is dried and is cooled down；
(4) coating process: G, preparation: mould casting, paint obtained by step (3), blender, air pressure diaphragm pump, spray booth,
Paint baking oven and ice water circulation heat exchanger；
H, coating: I, will be painted and is stirred uniformly by blender, and viscosity needed for adjustment is painted is thickened by addition
Agent, will be using paint viscosity control between 2000-2500mPas；II, is by using air pressure diaphragm pump as spraying power
Spray booth is dried using the finishing of aerial spraying for source, shadow of the water content to aerial spraying in reduction air
It rings, is repeatedly sprayed, by the pressure control of spraying in 70-89kg/cm when spraying2Between, spraying time control in 60s-
Between 85s, so that paint is uniformly coated on mould casting surface in air pressure diaphragm pump；III, casts molding obtained by above-mentioned steps
Part is placed in paint baking oven and carries out paint baking；
I, cooling: mould casting obtained by step E is cooled down by ice water circulation heat exchanger, in order to receive
Collection；
(5) it forms: polishing grinding, packed products.
Embodiment 2
This implementation column and 1 operating procedure of embodiment are essentially identical, uniquely the difference is that, walk in step (1) degreasing process
The concentration of chromic acid in rapid F is 50g/L-55g/L, and by temperature control between 38 DEG C -43 DEG C, the density domination of electric current exists
0.3A/dm2-0.7A/dm2Between, voltage controls between 0-40V and (does not include 0V), and oxidization time makes into 60min-65min
Type cast(ing) surface forms oxidation film.
Embodiment 3
This implementation column and 1 operating procedure of embodiment are essentially identical, uniquely the difference is that, walk in step (1) degreasing process
The concentration of chromic acid in rapid F is 30g/L-35g/L, and by temperature control between 40 DEG C -45 DEG C, the density domination of electric current exists
0.2A/dm2-0.6A/dm2Between, voltage controls between 0-40V and (does not include 0V), and oxidization time makes into 60min-65min
Type cast(ing) surface forms oxidation film.
The present invention is further arranged to, and after step F, the resulting mould casting of step F is immersed in the CrO of 20g/L3
In solution, 5~15s of Passivation Treatment, is then dried at a temperature of being lower than 50 DEG C at room temperature.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, and those skilled in the art exists
Common variations and alternatives are carried out within the scope of technical solution of the present invention should all be included within the scope of the present invention.
Claims (3)
1. a kind of production technology of motor case, which comprises the following steps: (1) selection: A356-T6 aluminium is chosen,
Aluminium composition and respectively form component content are as follows: Si6.5~7.5, Mg0.3~0.45, Fe < 0.12, Cu < 0.1, Zn < 0.05,
Mn<0.05,Ti<0.2；
(2) it casting technique: the selection of A. mold: is tied according to the structure choice mold of required casting, and by mold design at 6 die sinkings
Structure, in addition to upper lower open die, periphery 4 is opened, and using the core pulling cylinder on air injection machine；
B. melting: being melted to 800-850 DEG C for aluminium melting, is handled by GBF and is refined to aluminium alloy, degasification, slagging-off, and
The molten aluminum after refining degasification is transferred in the protection stove of low pressure casting machine after standing 10min, and molten aluminum control to be cast is existed
Between 690 DEG C~700 DEG C；
C. be poured: according to casting quality, the volume and weight of casting, carried out using following steps: in I liter of liquid stage, II fills type rank
Section, III packing stage in five stages of IV release stage and V cooling stage, control time and the cavity pressure in each stage；
(3) degreasing process: D. preparation: mould casting to be processed, spray chamber, degreasing spray pump, a certain amount of alkalescent degreasing
Liquid, brush roll, a certain amount of neutral degreaser, neutralization chamber, rinsing bowl, electrolytic bath, drying box and cooling fan；
E. degreasing: I, send mould casting to be processed to spray chamber, using alkalescent degreaser, carries out preliminary degreasing, by de-
Degreaser is sprayed in mould casting to be processed from pump line through nozzle by rouge spray pump；II, is by mould casting obtained by above-mentioned steps
The upper and lower surface of mould casting is scrubbed by brush roll, and neutral degreaser is subjected to pressurization by degreasing spray pump and is sprayed onto molding
On casting；III, send mould casting obtained by above-mentioned steps to neutralization chamber, is dipped to and neutralizes in indoor neutral degreaser, to reach
To the purpose of thorough degreasing；
F. aoxidize: mould casting obtained by step E is rinsed by I, by rinsing bowl；II, is by mould casting obtained by above-mentioned steps
It is placed in electrolytic bath, by chromic acid anodizing method, using chromic acid solution as electrolyte, using aluminium sheet as anode, graphite is made
For cathode material, and the concentration of chromic acid is 90g/L-100g/L, by temperature control between 34 DEG C -40 DEG C, the density control of electric current
System is in 0.3A/dm2-2.5A/dm2Between, voltage controls between 0-40V, does not include 0V, and oxidization time makes to form in 35min
Cast(ing) surface forms oxidation film；III, is thoroughly cleaned mould casting obtained by above-mentioned steps, passes through drying box and cooling fan
It is dried and is cooled down；
(4) coating process: G, preparation: mould casting, paint, blender, air pressure diaphragm pump, spray booth, baking vanish obtained by step (3)
Furnace and ice water circulation heat exchanger；
H, coating: I, will be painted and is stirred uniformly by blender, viscosity needed for adjustment is painted, will by adding thickener
Using paint viscosity control between 2000-2500mPas；II, as spraying power source, is adopted by using air pressure diaphragm pump
With the finishing of aerial spraying, spray booth is dried, reduces influence of the water content to aerial spraying in air, into
Row repeatedly spraying, controls the pressure of spraying in 70-89kg/cm when spraying2Between, spraying time control 60s-85s it
Between, so that paint is uniformly coated on mould casting surface in air pressure diaphragm pump；III, places mould casting obtained by above-mentioned steps
Paint baking is carried out in paint baking oven；
I, cooling: mould casting obtained by above-mentioned steps is cooled down by ice water circulation heat exchanger, in order to collect；
(5) it forms: polishing grinding, packed products.
2. a kind of production technology of motor case according to claim 1, which is characterized in that step (2) founder
The time in the liter liquid stage of the step C in skill controls between 6s-8s, and cavity pressure controls between 10kPa-15kPa, fills
The time in type stage controls between 38s-45s, and the time of packing stage controls between 320s-400s, fills type stage and guarantor
The pressure stage needs to control cavity pressure between 30kPa-35kPa, and the time in release stage controls within 6s, cooling rank
The time of section controls between 250s-300s.
3. a kind of production technology of motor case according to claim 1, which is characterized in that after above-mentioned carry out step F
Resulting mould casting is immersed in the CrO of 20g/L3In solution, 5~15s of Passivation Treatment, is then being lower than 50 DEG C of temperature at room temperature
Lower drying.
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| CN201710983738.8A CN107794417B (en) | 2017-10-20 | 2017-10-20 | A kind of production technology of motor case |
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| CN201710983738.8A CN107794417B (en) | 2017-10-20 | 2017-10-20 | A kind of production technology of motor case |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108546851A (en) * | 2018-04-28 | 2018-09-18 | 浙江宏鼎汽摩配件股份有限公司 | A kind of production technology of automobile cylinder head |
| CN108397308A (en) * | 2018-05-17 | 2018-08-14 | 台州市天人合塑料包装有限公司 | A kind of direct injection timing chain assembly and its processing method |
| CN109888593A (en) * | 2019-03-05 | 2019-06-14 | 浙江浙水工贸有限公司 | A kind of processing method of deep well pump cable socket |
| CN109877015A (en) * | 2019-03-08 | 2019-06-14 | 西安阿尔斯通永济电气设备有限公司 | The stator dipping guard method being convenient to clean |
| CN110714149A (en) * | 2019-11-14 | 2020-01-21 | 台州欧本汽摩配件有限公司 | Electric vehicle hub and machining method thereof |
| CN110964952A (en) * | 2019-12-18 | 2020-04-07 | 林虹全 | Method for casting special-shaped sound box shell |
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| DE202008010896U1 (en) * | 2008-08-05 | 2008-10-23 | AHC Oberflächentechnik GmbH | Material, in particular components, with improved wear protection layers |
| CN103451482A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | High-weather-resistance aluminum alloy section and production technique thereof |
| CN105215329A (en) * | 2015-09-17 | 2016-01-06 | 高文梅 | A kind of casting method of the power-assisted vavuum pump housing that brakes |
| CN106001507A (en) * | 2016-07-19 | 2016-10-12 | 上海华培动力科技有限公司 | Low-pressure casting process for turbine shell of turbocharger |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008010896U1 (en) * | 2008-08-05 | 2008-10-23 | AHC Oberflächentechnik GmbH | Material, in particular components, with improved wear protection layers |
| CN103451482A (en) * | 2013-08-13 | 2013-12-18 | 河南辉龙铝业股份有限公司 | High-weather-resistance aluminum alloy section and production technique thereof |
| CN105215329A (en) * | 2015-09-17 | 2016-01-06 | 高文梅 | A kind of casting method of the power-assisted vavuum pump housing that brakes |
| CN106001507A (en) * | 2016-07-19 | 2016-10-12 | 上海华培动力科技有限公司 | Low-pressure casting process for turbine shell of turbocharger |
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