CN108048837A - A kind of die casting surface processing technique - Google Patents
A kind of die casting surface processing technique Download PDFInfo
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- CN108048837A CN108048837A CN201711362037.9A CN201711362037A CN108048837A CN 108048837 A CN108048837 A CN 108048837A CN 201711362037 A CN201711362037 A CN 201711362037A CN 108048837 A CN108048837 A CN 108048837A
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- die casting
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- ing And Chemical Polishing (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
The invention discloses a kind of die casting surface processing techniques, include the following steps：Selected die casting is heat-treated, the condition at 120 150 degrees Celsius is heat-treated again, after softening after its surface, using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form coat of metal, die casting is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and metal surface treating liquid is added into treatment trough, 20 40min are placed under conditions of 40 50 degrees Celsius of die casting is made, by treated, die casting carries out surface spraying metallic particles again, after its drying, die casting after being as surface-treated.The present invention can diversified forms die casting surface is handled, be formed on its surface metal film, can effectively ensure that its surface rotproofness ensure that die casting surface treatment quality used so as to fit different types of die casting.
Description
Technical field
The present invention relates to field of metal surface treatment technology more particularly to a kind of die casting surface processing techniques.
Background technology
Die casting is a kind of part of compression casting, is to use the compression casting machinery die casting machine for installing casting die, will
It is heated to be the feeding mouth that the metals such as the copper, zinc, aluminum or aluminum alloy of liquid pour into die casting machine, through die casting machine die casting, casts out mold
Copper, zinc, aluminium part or the aluminum alloy part of the shape and size of limitation, such part are usually just called die casting.Die casting
Part has different calls in different places, such as diecast parts, die-casting, die casting, die casting aluminium, die case zinc part, die casting copper
Part, copper die casting, zine pressure casting, aluminium diecasting aluminium diecasting, aluminium pressure alloy-steel casting, aluminium alloy compression casting part etc..It is given birth in die casting
During production, since mold cavity surface generates cracking so that forming thorn around the machined position in die casting surface or flying
Side directly affects the quality of product.For this purpose, we have proposed a kind of die casting surface processing techniques.
The content of the invention
The present invention proposes a kind of die casting surface processing technique, to solve the problems mentioned in the above background technology.
The present invention proposes a kind of die casting surface processing technique, includes the following steps：
S1：Condition of the selected die casting at 200-350 degrees Celsius is carried out hot place by die casting to be processed needed for selection
Reason after softening after its surface, is quickly placed it in sink, recovered to room temperature, again in 120-150 degrees Celsius of condition
It is heat-treated, it is spare after softening after its surface；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and surface preparation is carried out to die casting under conditions of 50-60 degrees Celsius, and by the electric current in electrolytic cell
Control is in 3-6A/dm2, electrolysis time 45-60s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 20-40min is placed under conditions of 40-50 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, after its drying, after being as surface-treated
Die casting.
Preferably, the electrolyte in S3 is specially the mixed liquor of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride, and hydrogen
Potassium oxide, ammonium chloride, water acetic acid, the weight ratio of potassium fluoride are 1：1：1：0.5.
The present invention also provides a kind of metal surface treating liquid, the formula of raw material by weight is as follows：Nickel nitrate 20-30
Part, 20-30 parts of sodium acetate, 5-8 parts of the transforming agent that derusts, 5-8 parts of corrosion inhibiter, 1-4 parts of citric acid, 1-4 parts of ferrous oxalate lactic acid.
Preferably, 5-8 parts of the hydrogen peroxide that concentration is 50% is also needed in formula.
Preferably, in the drying and processing in S6, need to be dried under conditions of 45-60 degrees Celsius, it need to also be in 10-
15min completes drying.
Preferably, after the completion of in S1, hot shaping need to be carried out to die casting, and hot training time is 60-90s.
A kind of die casting surface processing technique proposed by the present invention, advantageous effect are：The die casting surface processing technique
Can diversified forms die casting surface is handled, be formed on its surface metal film, can effectively ensure that the corrosion resistant on its surface
Property, additionally it is possible to make its surface that there is good metal-like, ensure that the quality of die casting surface treatment so as to fit inhomogeneity
The die casting of type uses.
Specific embodiment
With reference to specific embodiment, the present invention will be further described.
Embodiment 1
The present invention proposes a kind of die casting surface processing technique, includes the following steps：
S1：Condition of the selected die casting at 200 degrees Celsius is heat-treated, treats by die casting to be processed needed for selection
It after the softening of its surface, quickly places it in sink, recovers to room temperature, the condition at 120 degrees Celsius carries out hot place again
Reason after softening after its surface, need to carry out die casting hot shaping, and hot training time is 60s, spare；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and electrolyte is specially the mixed liquor of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride, and potassium hydroxide,
Ammonium chloride, water acetic acid, the weight ratio of potassium fluoride are 1：1：1：0.5, it is pre- to die casting progress surface under conditions of 50 degrees Celsius
Processing, and by the current control in electrolytic cell in 3A/dm2, electrolysis time 45s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 20min is placed under conditions of 40 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, need to be at 45 degrees Celsius after its drying
Under the conditions of dried, need to also 10min complete dry, as be surface-treated after die casting.
The present invention also provides a kind of metal surface treating liquid, the formula of raw material by weight is as follows：20 parts of nickel nitrate, second
Sour 20 parts of sodium, 5 parts of the transforming agent that derusts, 5 parts of corrosion inhibiter, 5 parts of hydrogen peroxide, 1 part of citric acid, 1 part of ferrous oxalate lactic acid.
Embodiment 2
The present invention proposes a kind of die casting surface processing technique, includes the following steps：
S1：Condition of the selected die casting at 250 degrees Celsius is heat-treated, treats by die casting to be processed needed for selection
It after the softening of its surface, quickly places it in sink, recovers to room temperature, the condition at 130 degrees Celsius carries out hot place again
Reason after softening after its surface, need to carry out die casting hot shaping, and hot training time is 70s, spare；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and electrolyte is specially the mixed liquor of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride, and potassium hydroxide,
Ammonium chloride, water acetic acid, the weight ratio of potassium fluoride are 1：1：1：0.5, it is pre- to die casting progress surface under conditions of 54 degrees Celsius
Processing, and by the current control in electrolytic cell in 4A/dm2, electrolysis time 50s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 25min is placed under conditions of 44 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, need to be at 50 degrees Celsius after its drying
Under the conditions of dried, need to also 12min complete dry, as be surface-treated after die casting.
The present invention also provides a kind of metal surface treating liquid, the formula of raw material by weight is as follows：24 parts of nickel nitrate, second
Sour 24 parts of sodium, 6 parts of the transforming agent that derusts, 6 parts of corrosion inhibiter, 6 parts of hydrogen peroxide, 2 parts of citric acid, 2 parts of ferrous oxalate lactic acid.
Embodiment 3
The present invention proposes a kind of die casting surface processing technique, includes the following steps：
S1：Condition of the selected die casting at 300 degrees Celsius is heat-treated, treats by die casting to be processed needed for selection
It after the softening of its surface, quickly places it in sink, recovers to room temperature, the condition at 140 degrees Celsius carries out hot place again
Reason after softening after its surface, need to carry out die casting hot shaping, and hot training time is 80s, spare；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and electrolyte is specially the mixed liquor of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride, and potassium hydroxide,
Ammonium chloride, water acetic acid, the weight ratio of potassium fluoride are 1：1：1：0.5, it is pre- to die casting progress surface under conditions of 58 degrees Celsius
Processing, and by the current control in electrolytic cell in 5A/dm2, electrolysis time 55s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 35min is placed under conditions of 48 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, need to be at 55 degrees Celsius after its drying
Under the conditions of dried, need to also 14min complete dry, as be surface-treated after die casting.
The present invention also provides a kind of metal surface treating liquid, the formula of raw material by weight is as follows：28 parts of nickel nitrate, second
Sour 28 parts of sodium, 7 parts of the transforming agent that derusts, 7 parts of corrosion inhibiter, 7 parts of hydrogen peroxide, 3 parts of citric acid, 3 parts of ferrous oxalate lactic acid.
Embodiment 4
The present invention proposes a kind of die casting surface processing technique, includes the following steps：
S1：Condition of the selected die casting at 350 degrees Celsius is heat-treated, treats by die casting to be processed needed for selection
It after the softening of its surface, quickly places it in sink, recovers to room temperature, the condition at 150 degrees Celsius carries out hot place again
Reason after softening after its surface, need to carry out die casting hot shaping, and hot training time is 90s, spare；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and electrolyte is specially the mixed liquor of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride, and potassium hydroxide,
Ammonium chloride, water acetic acid, the weight ratio of potassium fluoride are 1：1：1：0.5, it is pre- to die casting progress surface under conditions of 60 degrees Celsius
Processing, and by the current control in electrolytic cell in 6A/dm2, electrolysis time 60s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 40min is placed under conditions of 50 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, need to be at 60 degrees Celsius after its drying
Under the conditions of dried, need to also 15min complete dry, as be surface-treated after die casting.
The present invention also provides a kind of metal surface treating liquid, the formula of raw material by weight is as follows：30 parts of nickel nitrate, second
Sour 30 parts of sodium, 8 parts of the transforming agent that derusts, 8 parts of corrosion inhibiter, 8 parts of hydrogen peroxide, 4 parts of citric acid, 4 parts of ferrous oxalate lactic acid.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of die casting surface processing technique, which is characterized in that comprise the following steps：
S1：Condition of the selected die casting at 200-350 degrees Celsius is carried out hot place by die casting to be processed needed for selection
Reason after softening after its surface, is quickly placed it in sink, recovered to room temperature, again in 120-150 degrees Celsius of condition
It is heat-treated, it is spare after softening after its surface；
S2：Using sprayer to treated in S1 die casting surface spraying metallic particles, and die casting surface is made to form metal
Then protective layer makes die casting recover to room temperature；
S3：The die casting handled in S2 is placed in electrolytic cell again, and electrolyte is added into electrolytic cell, and need to ensure electricity
Solution liquid covers die casting, and surface preparation is carried out to die casting under conditions of 50-60 degrees Celsius, and by the electric current in electrolytic cell
Control is in 3-6A/dm2, electrolysis time 45-60s；
S4：Surface polishing treatment is carried out again to the die casting after electrolysis；
S5：After polishing, die casting is placed in treatment trough, and metal surface treating liquid is added into treatment trough, and metal watch
Surface treatment liquid need to cover die casting, and 20-40min is placed under conditions of 40-50 degrees Celsius of die casting is made；
S6：By treated in S5, die casting carries out surface spraying metallic particles again, after its drying, after being as surface-treated
Die casting.
2. a kind of die casting surface processing technique according to claim 1, it is characterised in that：Electrolyte in S3 is specific
For potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride mixed liquor, and the weight of potassium hydroxide, ammonium chloride, water acetic acid, potassium fluoride
Than for 1：1：1：0.5.
3. a kind of metal surface treating liquid according to claim 1, it is characterised in that：The formula of its raw material by weight is such as
Under：20-30 parts of nickel nitrate, 20-30 parts of sodium acetate, 5-8 parts of the transforming agent that derusts, 5-8 parts of corrosion inhibiter, 1-4 parts of citric acid, oxalic acid are sub-
1-4 parts of iron lactic acid.
4. metal surface treating liquid according to claim 3, it is characterised in that：It also needs pair that concentration is 50% in being formulated
5-8 parts of oxygen water.
5. a kind of die casting surface processing technique according to claim 1, it is characterised in that：Drying and processing in S6
In, it need to be dried under conditions of 45-60 degrees Celsius, need to also be completed to dry in 10-15min.
6. a kind of die casting surface processing technique according to claim 1, it is characterised in that：After the completion of in S1, need pair
Die casting carries out hot shaping, and hot training time is 60-90s.
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| CN201711362037.9A CN108048837A (en) | 2017-12-18 | 2017-12-18 | A kind of die casting surface processing technique |
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| CN201711362037.9A CN108048837A (en) | 2017-12-18 | 2017-12-18 | A kind of die casting surface processing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108838340A (en) * | 2018-06-28 | 2018-11-20 | 浙江银拓文化有限公司 | A kind of method for processing noble metal |
| CN109356996A (en) * | 2018-11-19 | 2019-02-19 | 襄阳市中康汽车配件有限公司 | A kind of transmission housing surface treating method that can improve automobile gearbox service life |
| CN113403660A (en) * | 2021-05-25 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109356996A (en) * | 2018-11-19 | 2019-02-19 | 襄阳市中康汽车配件有限公司 | A kind of transmission housing surface treating method that can improve automobile gearbox service life |
| CN109356996B (en) * | 2018-11-19 | 2022-03-04 | 襄阳市中康汽车配件有限公司 | Surface treatment method for gearbox shell capable of prolonging service life of automobile gearbox |
| CN113403660A (en) * | 2021-05-25 | 2021-09-17 | 徐州鹏盛铸造有限公司 | Casting surface treatment method |
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