CN106119930A - The coating process of wheel hub - Google Patents
The coating process of wheel hub Download PDFInfo
- Publication number
- CN106119930A CN106119930A CN201610740039.6A CN201610740039A CN106119930A CN 106119930 A CN106119930 A CN 106119930A CN 201610740039 A CN201610740039 A CN 201610740039A CN 106119930 A CN106119930 A CN 106119930A
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- CN
- China
- Prior art keywords
- wheel hub
- water
- electrophoresis
- temperature
- immersed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/12—Electrophoretic coating characterised by the process characterised by the article coated
- C25D13/14—Tubes; Rings; Hollow bodies
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/20—Pretreatment
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses the coating process of a kind of wheel hub, comprise the following steps: 1, defat；2, washing；3, pickling；4, washing；5, passivation；6, washing；7, spray end powder；8, dry；9, color spray paint；10, electrophoresis；11, dry.After its electrophoresis, product appearance is good, without the defect such as shrinkage cavity or paint film be coarse, it is possible to meet automobile vendor's appearance requirement for electrophoresis wheel hub, the popularization of advantageous product.
Description
Technical field
The invention belongs to Automobile Products technical field, be specifically related to the coating process of a kind of wheel hub.
Background technology
Along with the development of automotive industry, the yield of motor vehicles increases and recoverable amount increases, and is driving economic development and is giving
People's trip brings convenience.
In the manufacture of aluminium alloy wheel hub, the heat resistance of surface colored paint is required higher, many employing hot setting modes pair
Colored paint solidifies.This causes being difficult to use attaching covering method and applies different colours to realize hub surface different parts.By
Different to the adhesive force of end bisque in different colored paints, it is more difficult to by different colored paints in different step continuous spray to the table of wheel hub
Face.Different colored paints, when being applied to the sheave surface of wheel hub, is likely to be due to the colored paint that first applies and after-applied colored paint solvent
Dissolve each other, and caused colored paint edge that undesirable boundary excessively and phenomenon of dissolving each other occur.
Electrophoresis process is ripe application already in the field such as body of a motor car, chassis member, but for wheel hub, everybody thinking master
Still to concentrate on traditional pressure-air spraying or electrostatic spraying, therefore not expect and electrophoresis is combined with wheel hub production,
Its technical parameter also needs to be groped.
Summary of the invention
The purpose of the present invention is to propose to the coating process of a kind of wheel hub, overcome the deficiencies in the prior art, produce after its electrophoresis
Product outward appearance is good, without the defect such as shrinkage cavity or paint film be coarse, it is possible to meet automobile vendor's appearance requirement for electrophoresis wheel hub, favorably produce
The popularization of product.
In order to reach above-mentioned purpose of design, the technical solution used in the present invention is as follows:
The coating process of a kind of wheel hub, comprises the following steps:
1, defat: use alkali system degreasing agent, carries out spraying ungrease treatment in 2 minutes at 50 DEG C to wheel hub；Spray pressure
0.1-0.15MPa, alkali point: 6-8；
2, washing: in wheel hub is immersed in clear water in 1, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes, electrical conductivity
<700 μ s/cm, pH:>7.0；
3, pickling: use drill traverse method, acid pickling and rust removing formula of liquid: the technical hydrochloric acid of concentration 31%, corrosion inhibiter 3%, temperature: 40～
50 DEG C, process time 3～8 minutes；
4, washing: in wheel hub is immersed in clear water in 3, the temperature of water is 40～50 DEG C, electrical conductivity < 600 μ s/cm；
5, passivation: passivation: use chrome-free tanning agent, in wheel hub is immersed in chrome-free tanning agent in step 4, soaks 7～8
Minute；Electrical conductivity 150-350 μ s/cm, pH:3.8-4.2 activate point: 1.5-2.5；
6, washing: in wheel hub is immersed in clear water in 5, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes；
7, spray end powder: use spray gun, spray range is just including, side, the back of the body, THICKNESS CONTROL is in 100-120 μm；
8, dry: using heated by natural gas, workpiece baking temperature is 180 DEG C × 20min；
9, color spray paint: make spray gun, spray range just include, on side, THICKNESS CONTROL is in 8-12 μm；
10, electrophoresis: mixed homogeneously with water by electrophoretic paint, is immersed in spoke under electrophoretic paint liquid level, and by bolt hole and
Centre bore is maintained at outside electrophoretic paint；
11, dry: the wheel hub after the electrophoresis that will obtain carries out baking process, obtains finished product.
Preferably, described electrophoresis power voltage is 80V, and electrophoresis time is 120s, and electrophoretic paint temperature is 25 DEG C.
Preferably, described electrophoretic paint is acrylic acid.
Preferably, described electrophoretic paint with water proportioning is: 1:2～15, joins paint pure water conductivity and is not more than 10 μ s/cm.
The coating process of wheel hub of the present invention provides the benefit that: after its electrophoresis, product appearance is good, without shrinkage cavity or paint
The defects such as film is coarse, it is possible to meet automobile vendor's appearance requirement for electrophoresis wheel hub, the popularization of advantageous product.
Detailed description of the invention
Below preferred embodiment of the invention is described in further detail.
The coating process of described wheel hub, concretely comprises the following steps:
1, defat: use alkali system degreasing agent, carries out spraying ungrease treatment in 2 minutes at 50 DEG C to wheel hub；Spray pressure
0.1-0.15MPa, alkali point: 6-8；
2, washing: in wheel hub is immersed in clear water in 1, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes, electrical conductivity
<700 μ s/cm, pH:>7.0；
3, pickling: use drill traverse method, acid pickling and rust removing formula of liquid: the technical hydrochloric acid of concentration 31%, corrosion inhibiter 3%, temperature: 40～
50 DEG C, process time 3～8 minutes；
4, washing: in wheel hub is immersed in clear water in 3, the temperature of water is 40～50 DEG C, electrical conductivity < 600 μ s/cm；
5, passivation: passivation: use chrome-free tanning agent, in wheel hub is immersed in chrome-free tanning agent in step 4, soaks 7～8
Minute；Electrical conductivity 150-350 μ s/cm, pH:3.8-4.2 activate point: 1.5-2.5；
6, washing: in wheel hub is immersed in clear water in 5, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes；
7, spray end powder: use spray gun, spray range is just including, side, the back of the body, THICKNESS CONTROL is in 100-120 μm；
8, dry: using heated by natural gas, workpiece baking temperature is 180 DEG C × 20min；
9, color spray paint: make spray gun, spray range just include, on side, THICKNESS CONTROL is in 8-12 μm；
10, electrophoresis: mixed homogeneously with water by electrophoretic paint, is immersed in spoke under electrophoretic paint liquid level, and by bolt hole and
Centre bore is maintained at outside electrophoretic paint；
11, dry: the wheel hub after the electrophoresis that will obtain carries out baking process, obtains finished product.
Described electrophoresis power voltage is 80V, and electrophoresis time is 120s, and electrophoretic paint temperature is 25 DEG C.
Described electrophoretic paint is acrylic acid；Described electrophoretic paint with water proportioning is: 1:2～15, joins paint pure water conductivity little
In 10 μ s/cm.
Above content is to combine the further description that the present invention is done by concrete preferred implementation, it is simple to this skill
The technical staff in art field is understood that and applies the present invention, it is impossible to assert the present invention be embodied as be confined to these explanations.
For general technical staff of the technical field of the invention, can also make without departing from the inventive concept of the premise
Some simple deduction or replace, without through performing creative labour.Therefore, those skilled in the art's taking off according to the present invention
Showing, the simple modifications making the present invention all should be within protection scope of the present invention.
Claims (4)
1. the coating process of a wheel hub, it is characterised in that: comprise the following steps:
1) defat: use alkali system degreasing agent, carries out spraying ungrease treatment in 2 minutes at 50 DEG C to wheel hub；Spray pressure 0.1-
0.15MPa, alkali point: 6-8；
2) washing: in wheel hub is immersed in clear water in 1, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes, electrical conductivity < 700
μ s/cm, pH: > 7.0；
3) pickling: use drill traverse method, acid pickling and rust removing formula of liquid: the technical hydrochloric acid of concentration 31%, corrosion inhibiter 3%, temperature: 40～50
DEG C, process time 3～8 minutes；
4) washing: in wheel hub is immersed in clear water in 3, the temperature of water is 40～50 DEG C, electrical conductivity < 600 μ s/cm；
5) passivation: use chrome-free tanning agent, in wheel hub is immersed in chrome-free tanning agent in step 4, soak 7～8 minutes；Conductance
Rate 150-350 μ s/cm, pH:3.8-4.2 activate point: 1.5-2.5；
6) washing: in wheel hub is immersed in clear water in 5, the temperature of water is 40～50 DEG C, and the time is 7～8 minutes；
7) spray end powder: use spray gun, spray range is just including, side, the back of the body, THICKNESS CONTROL is in 100-120 μm；
8) dry: using heated by natural gas, workpiece baking temperature is 180 DEG C × 20min；
9) color spray paint: make spray gun, spray range just include, on side, THICKNESS CONTROL is in 8-12 μm；
10) electrophoresis: mixed homogeneously with water by electrophoretic paint, is immersed in spoke under electrophoretic paint liquid level, and by bolt hole and center
Hole is maintained at outside electrophoretic paint；
11) dry: the wheel hub after the electrophoresis that will obtain carries out baking process, obtains finished product.
The coating process of wheel hub the most according to claim 1, it is characterised in that: described electrophoresis power voltage is 80V, electrophoresis
Time is 120s, and electrophoretic paint temperature is 25 DEG C.
The coating process of wheel hub the most according to claim 1, it is characterised in that: described electrophoretic paint is acrylic acid.
The coating process of wheel hub the most according to claim 3, it is characterised in that: described electrophoretic paint with water proportioning is: 1:2～
15, join paint pure water conductivity and be not more than 10 μ s/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740039.6A CN106119930A (en) | 2016-08-28 | 2016-08-28 | The coating process of wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610740039.6A CN106119930A (en) | 2016-08-28 | 2016-08-28 | The coating process of wheel hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106119930A true CN106119930A (en) | 2016-11-16 |
Family
ID=57271815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610740039.6A Pending CN106119930A (en) | 2016-08-28 | 2016-08-28 | The coating process of wheel hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106119930A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057595A (en) * | 2017-11-29 | 2018-05-22 | 蚌埠市福沃特车轮制造科技有限公司 | A kind of high-wearing feature automotive hub coating process |
| CN113578708A (en) * | 2021-08-12 | 2021-11-02 | 盛旺汽车零部件（昆山）有限公司 | Coating process for improving quality of wheel hub outer tire ring shrinkage cavity |
| CN114950917A (en) * | 2022-06-06 | 2022-08-30 | 贵州龙凯科技有限公司 | Multicolor high-efficiency coating process for surface of aluminum alloy hub |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601030A (en) * | 2012-03-28 | 2012-07-25 | 中信戴卡轮毂制造股份有限公司 | Topping coating process for aluminum alloy wheel |
| CN102766897A (en) * | 2012-06-26 | 2012-11-07 | 浙江曙光实业有限公司 | Color register process for wheel hub |
| CN102876947A (en) * | 2012-09-05 | 2013-01-16 | 开平市中铝实业有限公司 | Magnesium alloy, manufacturing technology and hub thereof |
| CN103394454A (en) * | 2013-08-16 | 2013-11-20 | 中信戴卡股份有限公司 | Color registering coating process for aluminium alloy wheel |
-
2016
- 2016-08-28 CN CN201610740039.6A patent/CN106119930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601030A (en) * | 2012-03-28 | 2012-07-25 | 中信戴卡轮毂制造股份有限公司 | Topping coating process for aluminum alloy wheel |
| CN102766897A (en) * | 2012-06-26 | 2012-11-07 | 浙江曙光实业有限公司 | Color register process for wheel hub |
| CN102876947A (en) * | 2012-09-05 | 2013-01-16 | 开平市中铝实业有限公司 | Magnesium alloy, manufacturing technology and hub thereof |
| CN103394454A (en) * | 2013-08-16 | 2013-11-20 | 中信戴卡股份有限公司 | Color registering coating process for aluminium alloy wheel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108057595A (en) * | 2017-11-29 | 2018-05-22 | 蚌埠市福沃特车轮制造科技有限公司 | A kind of high-wearing feature automotive hub coating process |
| CN113578708A (en) * | 2021-08-12 | 2021-11-02 | 盛旺汽车零部件（昆山）有限公司 | Coating process for improving quality of wheel hub outer tire ring shrinkage cavity |
| CN114950917A (en) * | 2022-06-06 | 2022-08-30 | 贵州龙凯科技有限公司 | Multicolor high-efficiency coating process for surface of aluminum alloy hub |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161116 |
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| RJ01 | Rejection of invention patent application after publication |