CN105396764A - Pretreatment process for electrostatic powder spraying workpiece - Google Patents
Pretreatment process for electrostatic powder spraying workpiece Download PDFInfo
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- CN105396764A CN105396764A CN201510963071.6A CN201510963071A CN105396764A CN 105396764 A CN105396764 A CN 105396764A CN 201510963071 A CN201510963071 A CN 201510963071A CN 105396764 A CN105396764 A CN 105396764A
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- rinsing
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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
- 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
- B05D3/002—Pretreatement
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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
- 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
- B05D3/10—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 other chemical means
- B05D3/102—Pretreatment of metallic substrates
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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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses an electrostatic powder spraying process for a metal workpiece. The pretreatment process comprises the following steps: (1), hot water rinsing: the to-be-processed workpiece is placed on a rinsing pool, and then is rinsed by using hot water; (2), pre-degreasing: the workpiece rinsed with hot water is subjected to pre-degreasing treatment; (3), degreasing: under a condition of 50-60 DEG C, the workpiece is subjected to degreasing treatment by adopting a degreasing solution, and the workpiece is soaked in the degreasing solution for 30-40 minutes; (4) water rinsing: tap water is adopted for sprinkling rinsing, and the sprinkling time is 1-3 minutes; (5), pure water rinsing: pure water is adopted for soaking and rinsing, and the rinsing time is 1-3 minutes, so that impurities on the surface and the inside are further removed; (6), pure water rinsing, pure water is adopted for rinsing, and the rinsing time is 1-3 minutes, so that residual liquor on the surface of the workpiece is removed; and (7), high-pressure pure water rinsing: pure water is adopted for high-pressure sprinkling and rinsing, and the rinsing time is 1-3 minutes, so that redundant residual liquor and hard-to-remove dirty marks on the surface of the workpiece can be removed. Therefore, the pretreatment procedure is finished.
Description
Technical field
The present invention relates to coating process technical field, be specifically related to a kind of electrostatic powder spraying part pre-treating technology.
Background technology
Electrostatic spraying utilizes high-pressure electrostatic corona field principle.Metal guide flow cup on lance head connects high pressure negative electricity, is formed positive pole by painting workpiece grounding.Stronger electrostatic field is formed between spray gun and workpiece.When powdery paints is delivered to the diversion cup of spray gun from powder barrel through duff pipe by carrier gas (compressed air), intensive electric charge is produced around it, negative electrical charge on powder belt, under electrostatic force and compressed-air actuated effect, powder is adsorbed on workpiece uniformly, through heating, powder melts solidification (or plasticizing) uniformly, continuous, smooth, smooth film.
The factor of film performance is affected except relevant with powdery paints characteristic, also relevant with spraying parameter in Powder Electrostatic Coating Technology.Usual spray line pretreatment procedure mostly is now: pre-degreasing → degreasing → washing → washing → phosphatization → pure water is washed 1 → pure water and washed 2 → pure water and wash 3 → pure water and directly drench, in this common pretreatment procedure, effective cleaning can not be accomplished for comparatively complicated workpiece, directly have influence on coating quality.
Summary of the invention
Technical problem to be solved by this invention is to provide one to be easy to practical operation, the electrostatic powder spraying part pre-treating technology that coating quality is high.
Technical problem to be solved by this invention realizes by the following technical solutions:
A Powder Electrostatic Coating Technology for metalwork, comprises following processing step:
(1) hot water wash: put on service sink by workpiece to be processed, utilizes hot water to clean, water temperature 60-100 DEG C, and cleaning 5-10 minute, cleans surface irregularities;
(2) pre-degreasing: carry out pre-ungrease treatment to the workpiece after hot water wash, method sprays on workpiece by degreased cleaning agent, and spray time is 5 ~ 8 minutes, removes the top layer grease of surface of the work;
Above-mentioned degreased cleaning agent is made up of the component of following parts by weight: 1000 parts, water, nanometer silicon carbide 1.5 parts, converted starch 5 parts, malonic acid 4 parts, soda ash 5 parts, nano silicon 2 parts, motor vehicle antifreeze fluid 1.2 parts, 0.5 part, tobacco lignin, purple 4 parts, potato seedling ashes, nimbin 0.8 part, cyclohexanone 3 parts, forsythia suspense extraction 1.3 parts, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, octadecyl alcolol 2 parts;
(3) degreasing: under the condition of 50-60 DEG C, adopt degreasant solution to carry out ungrease treatment to workpiece, be immersed in by workpiece in degreasant solution, the time is 30-40 minute, removes the grease of surface of the work;
Above-mentioned degreasant solution is made up of the component of following parts by weight: 1000 parts, water, nanometer boron fibre 1.5 parts, converted starch 5 parts, salt 4 parts, soda ash 5 parts, nano-ceramic powder 2 parts, motor vehicle antifreeze fluid 1.2 parts, catechin 0.5 part, purple 4 parts, potato seedling ashes, talcum powder 0.8 part, cyclohexanone 3 parts, 1.3 parts, lotus leaf ashes, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, the tert-butyl alcohol 2 parts; This grease removing composition can reach good degreasing effect;
(4) wash: adopt running water cleaning showers, spray time is 1 ~ 3 minute, remove the degreasant solution of remained on surface;
(5) pure water is washed: adopt pure water soaking and washing, scavenging period is 1 ~ 3 minute, removes the impurity of surface and internal residual further;
(6) pure water is washed: adopt pure water cleaning showers, scavenging period is 1 ~ 3 minute, removes the raffinate of excess surface;
(7) High Pressure Pure Water is washed: adopt pure water high pressure cleaning showers, scavenging period is 1 ~ 3 minute, and remove the unnecessary raffinate of surface of the work and be difficult to the spot removed, so far, pretreatment procedure is complete.Electrostatic spraying can be carried out after workpiece drying.
The invention has the beneficial effects as follows: the pre-treatment of the present invention's composition, the cleaning degree of energy lifting workpieces, greatly useful to coating quality, be better than the pre-treatment of common operation, can effectively promote follow-up coating quality, improving product quality.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
Embodiment 1
As shown in Figure 1, a kind of Powder Electrostatic Coating Technology of metalwork, comprises following processing step:
(1) hot water wash: put on service sink by workpiece to be processed, utilizes hot water to clean, water temperature 60-100 DEG C, and cleaning 5-10 minute, cleans surface irregularities;
(2) pre-degreasing: carry out pre-ungrease treatment to the workpiece after hot water wash, method sprays on workpiece by degreased cleaning agent, and spray time is 5 ~ 8 minutes, removes the top layer grease of surface of the work;
Above-mentioned degreased cleaning agent is made up of the component of following parts by weight: 1000 parts, water, nanometer silicon carbide 1.5 parts, converted starch 5 parts, malonic acid 4 parts, soda ash 5 parts, nano silicon 2 parts, motor vehicle antifreeze fluid 1.2 parts, 0.5 part, tobacco lignin, purple 4 parts, potato seedling ashes, nimbin 0.8 part, cyclohexanone 3 parts, forsythia suspense extraction 1.3 parts, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, octadecyl alcolol 2 parts;
(3) degreasing: under the condition of 50-60 DEG C, adopt degreasant solution to carry out ungrease treatment to workpiece, be immersed in by workpiece in degreasant solution, the time is 30-40 minute, removes the grease of surface of the work;
Above-mentioned degreasant solution is made up of the component of following parts by weight: 1000 parts, water, nanometer boron fibre 1.5 parts, converted starch 5 parts, salt 4 parts, soda ash 5 parts, nano-ceramic powder 2 parts, motor vehicle antifreeze fluid 1.2 parts, catechin 0.5 part, purple 4 parts, potato seedling ashes, talcum powder 0.8 part, cyclohexanone 3 parts, 1.3 parts, lotus leaf ashes, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, the tert-butyl alcohol 2 parts; This grease removing composition can reach good degreasing effect;
(4) wash: adopt running water cleaning showers, spray time is 1 ~ 3 minute, remove the degreasant solution of remained on surface;
(5) pure water is washed: adopt pure water soaking and washing, scavenging period is 1 ~ 3 minute, removes the impurity of surface and internal residual further;
(6) pure water is washed: adopt pure water cleaning showers, scavenging period is 1 ~ 3 minute, removes the raffinate of excess surface;
(7) High Pressure Pure Water is washed: adopt pure water high pressure cleaning showers, scavenging period is 1 ~ 3 minute, and remove the unnecessary raffinate of surface of the work and be difficult to the spot removed, so far, pretreatment procedure is complete.Electrostatic spraying can be carried out after workpiece drying.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (1)
1. a Powder Electrostatic Coating Technology for metalwork, is characterized in that, comprises following processing step:
(1) hot water wash: put on service sink by workpiece to be processed, utilizes hot water to clean, water temperature 60-100 DEG C, cleaning 5-10 minute;
(2) pre-degreasing: carry out pre-ungrease treatment to the workpiece after hot water wash, method sprays on workpiece by degreased cleaning agent, and spray time is 5 ~ 8 minutes, removes the top layer grease of surface of the work;
Above-mentioned degreased cleaning agent is made up of the component of following parts by weight: 1000 parts, water, nanometer silicon carbide 1.5 parts, converted starch 5 parts, malonic acid 4 parts, soda ash 5 parts, nano silicon 2 parts, motor vehicle antifreeze fluid 1.2 parts, 0.5 part, tobacco lignin, purple 4 parts, potato seedling ashes, nimbin 0.8 part, cyclohexanone 3 parts, forsythia suspense extraction 1.3 parts, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, octadecyl alcolol 2 parts;
(3) degreasing: under the condition of 50-60 DEG C, adopt degreasant solution to carry out ungrease treatment to workpiece, be immersed in by workpiece in degreasant solution, the time is 30-40 minute, removes the grease of surface of the work;
Above-mentioned degreasant solution is made up of the component of following parts by weight: 1000 parts, water, nanometer boron fibre 1.5 parts, converted starch 5 parts, salt 4 parts, soda ash 5 parts, nano-ceramic powder 2 parts, motor vehicle antifreeze fluid 1.2 parts, catechin 0.5 part, purple 4 parts, potato seedling ashes, talcum powder 0.8 part, cyclohexanone 3 parts, 1.3 parts, lotus leaf ashes, lauryl mercaptan 5 parts, calcium hypochlorite 4 parts, the tert-butyl alcohol 2 parts;
(4) wash: adopt running water cleaning showers, spray time is 1 ~ 3 minute, remove the degreasant solution of remained on surface;
(5) pure water is washed: adopt pure water soaking and washing, scavenging period is 1 ~ 3 minute, removes the impurity of surface and internal residual further;
(6) pure water is washed: adopt pure water cleaning showers, scavenging period is 1 ~ 3 minute, removes the raffinate of excess surface;
(7) High Pressure Pure Water is washed: adopt pure water high pressure cleaning showers, scavenging period is 1 ~ 3 minute, and remove the unnecessary raffinate of surface of the work and be difficult to the spot removed, so far, pretreatment procedure is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963071.6A CN105396764A (en) | 2015-12-17 | 2015-12-17 | Pretreatment process for electrostatic powder spraying workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510963071.6A CN105396764A (en) | 2015-12-17 | 2015-12-17 | Pretreatment process for electrostatic powder spraying workpiece |
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| CN105396764A true CN105396764A (en) | 2016-03-16 |
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| CN201510963071.6A Pending CN105396764A (en) | 2015-12-17 | 2015-12-17 | Pretreatment process for electrostatic powder spraying workpiece |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482560A (en) * | 2018-11-30 | 2019-03-19 | 江阴精力机械有限公司 | Automatic spray paint production line high-efficiency cleaning pretreatment unit and its pretreating process |
| CN112742685A (en) * | 2020-12-24 | 2021-05-04 | 天津跃峰科技股份有限公司 | Powder spraying process for surface treatment of metal piece |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934265A (en) * | 2010-08-04 | 2011-01-05 | 六和轻合金（昆山）有限公司 | Coating method of aluminum alloy wheel rim |
-
2015
- 2015-12-17 CN CN201510963071.6A patent/CN105396764A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101934265A (en) * | 2010-08-04 | 2011-01-05 | 六和轻合金（昆山）有限公司 | Coating method of aluminum alloy wheel rim |
Non-Patent Citations (1)
| Title |
|---|
| 百度文库: "前处理工艺", 《HTTPS://WENKU.BAIDU.COM/VIEW/0F472E19C5DA50E2524D7F1D.HTML》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482560A (en) * | 2018-11-30 | 2019-03-19 | 江阴精力机械有限公司 | Automatic spray paint production line high-efficiency cleaning pretreatment unit and its pretreating process |
| CN112742685A (en) * | 2020-12-24 | 2021-05-04 | 天津跃峰科技股份有限公司 | Powder spraying process for surface treatment of metal piece |
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Application publication date: 20160316 |
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