CN115155998A - Production method of powder coated hub - Google Patents
Production method of powder coated hub Download PDFInfo
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- CN115155998A CN115155998A CN202210853211.4A CN202210853211A CN115155998A CN 115155998 A CN115155998 A CN 115155998A CN 202210853211 A CN202210853211 A CN 202210853211A CN 115155998 A CN115155998 A CN 115155998A
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- hub
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- 239000000843 powder Substances 0.000 title claims abstract description 86
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 56
- 238000000576 coating method Methods 0.000 claims abstract description 56
- 238000005507 spraying Methods 0.000 claims abstract description 36
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 238000005406 washing Methods 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000005238 degreasing Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- 230000007547 defect Effects 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000002161 passivation Methods 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000003973 paint Substances 0.000 abstract description 22
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000010292 electrical insulation Methods 0.000 abstract description 3
- 231100000614 poison Toxicity 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000003440 toxic substance Substances 0.000 abstract description 3
- 238000005554 pickling Methods 0.000 abstract description 2
- 238000011056 performance test Methods 0.000 abstract 1
- 238000001723 curing Methods 0.000 description 17
- 238000001514 detection method Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007590 electrostatic spraying Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Images
Classifications
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- 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
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/12—Applying particulate materials
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B6/00—Cleaning by electrostatic means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of hub manufacturing equipment, and relates to a production method of a powder coated hub, which comprises the following steps: a, pretreatment, namely washing, pickling, degreasing, drying and passivating a hub semi-product; b, performing electrostatic dust removal on the product; c, spraying powder, and coating the surface of the product with powder paint; blowing powder and checking the appearance of the product on line; e, line turning; f, baking and curing the product; g, rapidly cooling the product after the product is taken out of the baking line; and H, performing coating performance test on the off-line product. According to the production method of the powder coating hub, the powder coating does not contain a solvent and volatile toxic substances, and the utilization rate of raw materials is high; the electrostatic dust removal treatment is added, so that the surface of the product is clean and free of impurities; the coating film with enough thickness can be obtained without primary coating one-time construction, the cost can be reduced, and the production efficiency can be improved; the coating is compact, has good adhesive force, impact strength and toughness, high corner coverage rate, and excellent chemical corrosion resistance and electrical insulation performance.
Description
Technical Field
The invention belongs to the technical field of hub manufacturing equipment, and particularly relates to a production method of a powder coated hub.
Background
At present, in the manufacture of aluminum alloy wheel hubs, the surface of the wheel hub is generally coated to prevent the surface of the wheel hub from being corroded and improve the ornamental value.
Generally, paint coating is carried out, but the hub paint coating has the following defects: the production flow and the working procedure are more, and the production efficiency is lower; the production process has at least two times of spraying and baking, so that the energy consumption is high; a large amount of organic solvent is volatilized, and the environment is polluted (harmful gases such as toluene, xylene and the like are contained in paint); the paint has low utilization rate and cannot be recycled; the paint needs to be baked and formed for many times, and the comprehensive indexes of adhesive force, corrosion resistance and the like are common.
The invention discloses a hub coating powder spraying paint spraying process disclosed in Chinese patent document No. CN104014470A, which comprises the following steps: powder spraying treatment: heating the hub on a pretreatment line, transferring the hub characters from the treatment line to a spraying line for powder spraying, and sequentially carrying out solidification treatment, cooling treatment and polishing treatment on the hub after the powder spraying is finished; first paint spraying treatment: heating the hub again in the pretreatment line, transferring the hub from the treatment line to a paint spraying line for spraying paint, and sequentially carrying out curing, cooling and polishing treatment on the hub after the paint spraying is finished; and (3) machining treatment: machining a decorative hole on the hub; and (3) second paint spraying treatment: heating the hub again in the pretreatment line, transferring the hub from the treatment line to a paint spraying line for spraying paint, and sequentially curing the hub after the paint spraying is finished; detection treatment: and performing paint film performance detection, appearance detection and dynamic balance detection on the hub. Through the mode, the hub coating powder spraying process can improve the performance of the hub, and is simple in process and good in coating effect. The defects of the invention are that: 1. the process is more, the production efficiency is lower, the production process needs two times of paint spraying and two times of drying, and the energy consumption is larger; 2, a large amount of organic solvent volatilizes, the environment is polluted, the utilization rate of the paint is low, and the paint cannot be recycled; 3. the paint adhesion, corrosion resistance and other comprehensive indexes are general.
Disclosure of Invention
In order to overcome the defect problems of the prior art in the processes of powder spraying and paint spraying, the invention provides a production method of a powder coating hub, the powder coating does not contain a solvent and volatile toxic substances, and the utilization rate of raw materials is high; the coating film with enough thickness can be obtained without primary coating one-time construction, the cost can be reduced, and the production efficiency can be improved; the coating is compact, has good adhesive force, impact strength and toughness, high corner coverage rate, and excellent chemical corrosion resistance and electrical insulation performance.
The invention is realized by the following technical scheme: a production method of a powder coating hub comprises the following steps:
a, pre-treatment, namely placing the wheel hub semi-product on a logistics tray, carrying out water washing, acid washing, degreasing, drying and passivation treatment, and transferring to a powder coating line;
b, electrostatic dust removal, namely performing electrostatic dust removal on the product to ensure that the surface of the product is clean and free of impurities, and the rotation frequency of the equipment is 30-40HZ;
c, powder spraying, wherein the surface of the product is sprayed with powder coating, the defects of bottom exposure, powder accumulation, orange peel and the like cannot be caused, the powder outlet quantity of a spray gun opening is 300-400g/min, the distance between the spray gun and a spray gun is 200-300mm, the air pressure of compressed air is 5-8kgf/cm & lt 2 & gt, the high-voltage electrostatic voltage of the powder spraying is 30-60kv, and the coating film thickness is 60-100 mu m;
blowing powder, namely blowing the powder at the part where the powder cannot exist by using an air gun, and checking the appearance of the product on line;
e, line turning, namely turning the coated product to enter a curing line;
curing, setting the temperature, baking and curing the product sprayed with the powder at 190-200 ℃ for 40-50min;
g, cooling, namely rapidly cooling the product after the product is taken out of a baking line;
and H, off-line testing, namely performing coating performance testing on the off-line product.
Further, the device rotation frequency in the step B is 35HZ.
Furthermore, in the step C, the powder outlet quantity of a spray gun outlet is 350g/min, the distance between spray guns is 250mm, the air pressure of compressed air is 6.5kgf/cm & lt 2 & gt, the high-voltage electrostatic voltage of powder spraying is 45kv, and the coating film thickness is 85 micrometers.
Further, the powder coating obtained in the step C is commercially available from PPG coating china company, model number PCIC70101D.
Further, in the step F, the curing temperature is 195 ℃ and the duration is 45min.
The powder paint is prepared with special resin, pigment, stuffing, curing agent and other assistants in certain proportion, and through hot extrusion, crushing, sieving and other technological steps. The coating is stable in storage at normal temperature, and is heated, baked, melted and solidified through electrostatic spraying, friction spraying (thermosetting method) or fluidized bed dip-coating (thermoplastic method) to form a flat and bright permanent coating film, so that the aims of decoration and corrosion prevention are fulfilled.
Advantageous effects
According to the production method of the powder coating hub, the powder coating does not contain a solvent and volatile toxic substances, and the utilization rate of raw materials is high; the electrostatic dust removal treatment is added, so that the surface of the product is clean and free of impurities; the coating film with enough thickness can be obtained without primary coating one-time construction, the cost can be reduced, and the production efficiency can be improved; the coating is compact, has good adhesive force, impact strength and toughness, high corner coverage rate, and excellent chemical corrosion resistance and electrical insulation performance.
Drawings
FIG. 1 is a schematic flow diagram of a powder coated hub manufacturing process according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to examples to facilitate the understanding of the present invention by those skilled in the art, but the present invention is not limited to the following examples.
Example 1
A production method of a powder coating hub comprises the following steps:
a, pretreatment, namely placing a wheel hub semi-product on a logistics tray, washing with water, pickling, degreasing, drying, passivating, and transferring to a powder coating line;
b, electrostatic dust removal, namely performing electrostatic dust removal on the product to ensure that the surface of the product is clean and free of impurities, and the rotation frequency of the equipment is 30HZ;
c, powder spraying, namely spraying powder coating on the surface of the product, wherein the defects of bottom exposure, powder accumulation, orange peel and the like cannot be caused, the powder outlet quantity of a spray gun opening is 300g/min, the distance between spray guns is 200mm, the air pressure of compressed air is 5kgf/cm & lt 2 & gt, the high-voltage electrostatic voltage of the powder spraying is 30kv, and the coating film thickness is 60 mu m;
blowing powder, namely blowing the powder at the part where the powder cannot exist by using an air gun, and checking the appearance of the product on line;
e, line turning, namely turning the coated product to enter a curing line;
curing, setting the temperature, baking and curing the product sprayed with the powder at 190 ℃ for 40min;
g, cooling, namely rapidly cooling the product after the product is taken out of the baking line;
and H, off-line testing, namely performing coating performance testing on the off-line product.
Example 2
A production method of a powder coating hub comprises the following steps:
a, pre-treatment, namely placing the wheel hub semi-product on a logistics tray, carrying out water washing, acid washing, degreasing, drying and passivation treatment, and transferring to a powder coating line;
b, electrostatic dust removal, namely performing electrostatic dust removal on the product to ensure that the surface of the product is clean and free of impurities, and the equipment rotation frequency is 40HZ;
c, powder spraying, namely spraying powder coating on the surface of the product, wherein the defects of bottom exposure, powder accumulation, orange peel and the like cannot be caused, the powder outlet quantity of a spray gun opening is 400g/min, the distance between the spray gun and a spray gun is 300mm, the air pressure of compressed air is 8kgf/cm & lt 2 & gt, the high-voltage electrostatic voltage of the powder spraying is 60kv, and the coating film thickness is 100 mu m;
blowing powder, namely blowing the powder at the part where the powder cannot exist by using an air gun, and checking the appearance of the product on line;
e, line turning, namely turning the coated product to enter a curing line;
curing, setting the temperature, baking and curing the product sprayed with the powder at 200 ℃ for 50min;
g, cooling, namely rapidly cooling the product after the product is taken out of a baking line;
and H, off-line testing, namely performing coating performance testing on the off-line product.
Example 3
A production method of a powder coating hub comprises the following steps:
a, pre-treatment, namely placing the wheel hub semi-product on a logistics tray, carrying out water washing, acid washing, degreasing, drying and passivation treatment, and transferring to a powder coating line;
b, electrostatic dust removal, namely performing electrostatic dust removal on the product to ensure that the surface of the product is clean and free of impurities, and the rotation frequency of equipment is 35HZ;
c, powder spraying, namely spraying powder coating on the surface of the product, wherein the defects of bottom exposure, powder accumulation, orange peel and the like cannot be caused, the powder outlet quantity of a spray gun opening is 350g/min, the distance between spray guns is 250mm, the air pressure of compressed air is 6.5kgf/cm & lt 2 & gt, the high-voltage electrostatic voltage of the powder spraying is 45kv, and the coating film thickness is 85 mu m;
blowing powder, namely blowing the powder at the part where the powder cannot exist by using an air gun, and checking the appearance of the product on line;
e, line turning, namely turning the coated product to enter a curing line;
curing, setting the temperature, baking and curing the product sprayed with the powder at the curing temperature of 195 ℃ for 45min;
g, cooling, namely rapidly cooling the product after the product is taken out of the baking line;
and H, off-line testing, namely performing coating performance testing on the off-line product.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications, equivalents, flow charts, and other related technical fields that are made by the present invention will be included in the scope of the present invention.
Claims (5)
1. A production method of a powder coating hub is characterized in that: the method comprises the following steps:
a, pre-treatment, namely placing the wheel hub semi-product on a logistics tray, carrying out water washing, acid washing, degreasing, drying and passivation treatment, and transferring to a powder coating line;
b, electrostatic dust removal, namely performing electrostatic dust removal on the product to ensure that the surface of the product is clean and free of impurities, and the rotation frequency of the equipment is 30-40HZ;
c, spraying powder, coating the surface of the product with powder coating, wherein the defects of bottom exposure, powder accumulation, orange peel and the like cannot exist, the powder outlet quantity of a spray gun opening is 300-400g/min, the distance between spray guns is 200-300mm, and the air pressure of compressed air is 5-8kgf/cm 2 The high-voltage electrostatic voltage of powder spraying is 30-60kV, and the coating film thickness is 60-100 mu m;
blowing powder, namely blowing the powder at the part where the powder cannot exist by using an air gun, and checking the appearance of the product on line;
e, line turning, namely turning the coated product to enter a curing line;
curing, setting the temperature, baking and curing the product sprayed with the powder at 190-200 ℃ for 40-50min;
g, cooling, namely rapidly cooling the product after the product is taken out of a baking line;
and H, off-line testing, namely performing coating performance testing on the off-line product.
2. The method of producing a powder coated wheel hub as defined in claim 1, wherein: and the equipment rotation frequency in the step B is 35HZ.
3. The method of producing a powder coated wheel hub as defined in claim 1, wherein: in the step C, the powder outlet quantity of the spray gun opening is 350g/min, the gun distance of the spray gun is 250mm, and the air pressure of compressed air is 6.5kgf/cm 2 The high-voltage electrostatic voltage of the powder spraying is 45kV, and the thickness of the coating film is 85 mu m.
4. The method of producing a powder coated wheel hub as defined in claim 1, wherein: the powder coating in the step C is commercially available, and the manufacturer is PPG coating Chinese company with the model of PCIC70101D.
5. The method of producing a powder coated wheel hub as defined in claim 1, wherein: and in the step F, the curing temperature is 195 ℃ and the duration is 45min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853211.4A CN115155998A (en) | 2022-07-20 | 2022-07-20 | Production method of powder coated hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853211.4A CN115155998A (en) | 2022-07-20 | 2022-07-20 | Production method of powder coated hub |
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| Publication Number | Publication Date |
|---|---|
| CN115155998A true CN115155998A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210853211.4A Pending CN115155998A (en) | 2022-07-20 | 2022-07-20 | Production method of powder coated hub |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602042A (en) * | 2009-07-10 | 2009-12-16 | 广州市金钟汽车零件制造有限公司 | A kind of automatic powder spraying line for automobile wheel hub finishing components and technology thereof |
| CN101905212A (en) * | 2010-06-08 | 2010-12-08 | 浙江今飞机械集团有限公司 | Process for spraying powder on wheel hub |
| CN103949388A (en) * | 2014-03-24 | 2014-07-30 | 宁波宝迪汽车部件有限公司 | Coating method of electric vehicle hub |
-
2022
- 2022-07-20 CN CN202210853211.4A patent/CN115155998A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602042A (en) * | 2009-07-10 | 2009-12-16 | 广州市金钟汽车零件制造有限公司 | A kind of automatic powder spraying line for automobile wheel hub finishing components and technology thereof |
| CN101905212A (en) * | 2010-06-08 | 2010-12-08 | 浙江今飞机械集团有限公司 | Process for spraying powder on wheel hub |
| CN103949388A (en) * | 2014-03-24 | 2014-07-30 | 宁波宝迪汽车部件有限公司 | Coating method of electric vehicle hub |
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Application publication date: 20221011 |