CN115613019B - Waste heat blackening liquid suitable for workpiece split charging of full-automatic weighing and packaging machine - Google Patents
Waste heat blackening liquid suitable for workpiece split charging of full-automatic weighing and packaging machine Download PDFInfo
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- CN115613019B CN115613019B CN202211198317.1A CN202211198317A CN115613019B CN 115613019 B CN115613019 B CN 115613019B CN 202211198317 A CN202211198317 A CN 202211198317A CN 115613019 B CN115613019 B CN 115613019B
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
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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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
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- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
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Abstract
The invention discloses a waste heat black liquor for workpieces, which is suitable for split charging of a full-automatic weighing and packaging machine and is prepared from the following components in parts by weight: 10 to 45 parts of conductive polymer emulsion, 0.5 to 3 parts of aqueous color paste, 0.1 to 1.5 parts of organic alcohol amine, 0.1 to 1.0 part of defoamer, 0 to 1.0 part of film forming additive and 56 to 65 parts of water. The invention can continuously and automatically pack the workpieces by a packing machine, and simultaneously can maintain good rust resistance, the workpiece with problems on the same type of automatic packing machine is reduced to 5% -10% from the original 25% -40% by using the workpiece treated by the black liquor, the neutral salt spray test is carried out for more than 15 hours, the corrosion resistance is obviously improved, and the problem of metal corrosion resistance reduction caused by film scratch of the workpiece due to collision in the packing process is effectively solved.
Description
Technical Field
The invention relates to a waste heat black liquor for a workpiece, which is suitable for split charging of a full-automatic weighing and packaging machine.
Background
The blackening process is to form a compact black protective film layer on the surface of a metal workpiece by a physical or chemical method, so that the rust resistance of the workpiece is enhanced, and the appearance of the workpiece is beautified. The blackening process can be divided into oxidation blackening, normal temperature blackening, phosphorization blackening and waste heat blackening according to the difference of film forming principles.
The principle of the waste heat blackening technology is that waste heat of a workpiece in the heat treatment or other processing processes is utilized, so that a black high polymer resin film layer which is firmly combined and is not easy to fall off is formed on the surface of the steel workpiece at the moment of contacting with blackening liquid. The process is simple and easy to operate, does not require thorough oil and rust removal before blackening of the workpiece, has high production efficiency, is suitable for flow line production, and has long ageing period of the bath solution, strong film adhesion and uniform color.
With the maturation of the waste heat blackening process, the workpiece subjected to the existing waste heat blackening process has good corrosion resistance, but in the actual use process, the long-term corrosion resistance requirement of the workpiece outdoors still cannot be met. Meanwhile, the waste heat blackening process of the fastener is simple, the yield is high, and the production requirement cannot be met by the traditional manual classified weighing and packaging mode. The work piece after the waste heat blackening has been from traditional manual weighing classification packing, to full-automatic mechanized weighing classification packing transition. The full-automatic packaging machine has the characteristics of unmanned on duty, full-automatic screening of fasteners, automatic lifting, automatic classification, automatic weighing and automatic packaging. Although the equipment can greatly improve the efficiency of classified weighing and packaging, the equipment additionally brings some problems which do not exist in the traditional manual packaging mode. The blackening film layer of the traditional manually-sorted blackening workpiece has good appearance, and the situation that the blackening film layer is knocked or scratched is rare or not. However, on the full-automatic weighing and packaging machine, the blackened workpieces are stacked in a large amount in a feeding machine frame (the total mass of the workpieces at the process is 1000kg generally), the feeding machine frame is provided with a high-frequency vibrating screen, and fasteners enter a lifting machine through powerful screening of the high-frequency vibrating screen and then enter the subsequent weighing and packaging process. In the process, the workpiece is closely stacked and rubbed with each other, so that the waste heat blackening film coated by the waste heat blackening film is easily scratched and seriously exposed to the metal ground color. Statistical analysis shows that the workpiece with the problems accounts for about 25-40% of the total processed workpiece. The corrosion resistance of the workpiece is tested, the performance of the neutral salt spray test can only reach 2-3 hours, and the corrosion resistance is obviously reduced. The corrosion resistance is reduced, so that the use quality of downstream clients is greatly affected, and particularly in the southern yellow plum rainy season, the workpieces are extremely easy to rust at high temperature and high humidity, and large-area quality claims are caused.
Disclosure of Invention
The invention aims to: the invention aims to provide the waste heat black liquor for the workpiece, which is suitable for the split charging of the full-automatic weighing and packaging machine, and the blackened workpiece obtained by adopting the waste heat black liquor can effectively solve the problem of metal corrosion resistance reduction caused by film scratch of the workpiece due to collision generated in the packaging process.
The technical scheme is as follows: the invention relates to a waste heat black liquor for workpieces, which is suitable for split charging of a full-automatic weighing and packaging machine, and is prepared from the following components in parts by weight: 10 to 45 parts of conductive polymer emulsion, 0.5 to 3 parts of aqueous color paste, 0.1 to 1.5 parts of organic alcohol amine, 0.1 to 1.0 part of defoamer, 0 to 1.0 part of film forming additive and 56 to 65 parts of water.
Wherein the conductive polymer emulsion is at least one of polypyrrole emulsion, polythiophene emulsion, polyethylene dioxythiophene emulsion or polyaniline emulsion.
Wherein the conductivity of the conductive polymer emulsion is 500-800S/cm. The conductive polymer emulsion has better electric field shielding effect with the conductivity of 500-800S/cm, and under the effect of an electric field, the transfer of electrons between the polymer and the metal substrate is limited, so that the further corrosion of the metal substrate is inhibited (namely, the electrons migrated in the conductive polymer and the exposed metal substrate surface undergo oxidation-reduction reaction), and meanwhile, the compact passivation layer formed by oxidizing the metal substrate by the conductive polymer can seal the metal surface and inhibit other corrosive ions from contacting the metal surface, so that the anti-corrosion effect is further achieved.
Wherein the organic alcohol amine is at least one of monoethanolamine, triethanolamine, isopropanolamine or diglycolamine.
Wherein, the pigment used in the water-based color paste is at least one of carbon black, iron oxide black, chrome black, aniline black, phthalocyanine blue, phthalocyanine green, titanium pigment, zinc oxide or aluminum oxide.
Wherein the defoaming agent is an organic silicon defoaming agent or a polyether defoaming agent.
Wherein the film forming auxiliary agent is at least one of wetting agent, thickening agent, leveling agent, pH regulator or corrosion inhibitor.
The waste heat black liquor adopts the conductive polymer emulsion as a film-forming high polymer substance of the black film, the conductive polymer is a conjugated framework formed by a series of alternate single bonds and double bonds in a molecular structure, electrons can be transmitted between the inside of a polymer chain and the polymer, and therefore, the conductive polymer can conduct charges; when the workpiece is scratched by a film layer after friction of a high-frequency vibrating screen of an automatic packaging machine, compared with a traditional black-emitting workpiece treated by waste heat black liquor, the workpiece which is blacked by the waste heat black liquor containing conductive polymer can form a special compact oxide layer on the surface of a bare metal substrate (electrons migrating in the conductive polymer and the surface of the bare metal substrate undergo oxidation-reduction reaction to generate the compact oxide layer, and the compact oxide layer can not lead corrosion to expand inwards and outwards further) so as to passivate the metal, prevent corrosion medium from further contacting with the metal substrate, and effectively prevent corrosion; meanwhile, because charges can flow in molecules and among molecules of the conductive polymer, an electric field can be formed between the conductive polymer and the protected metal substrate, and the transmission of electrons between metal and oxides of the metal substrate is limited, so that the further corrosion of the metal substrate is inhibited.
The beneficial effects are that: the invention can continuously and automatically pack the workpieces by a packing machine, and simultaneously can maintain good rust resistance, the workpiece with problems on the same type of automatic packing machine is reduced to 5% -10% from the original 25% -40% by using the workpiece treated by the black liquor, the neutral salt spray test is carried out for more than 15 hours, the corrosion resistance is obviously improved, and the problem of metal corrosion resistance reduction caused by film scratch of the workpiece due to collision in the packing process is effectively solved.
Drawings
FIG. 1 is a drawing showing a workpiece subjected to waste heat blackening liquid blackening by using a polymer resin as a film forming polymer substance in the prior art, wherein the workpiece is packaged by an automatic packaging machine, scratches are formed on the surface of the workpiece, and the workpiece is placed for 2 hours and 5 hours at corresponding humidity and temperature respectively;
fig. 2 is a graph showing that similar scratches are generated on the surface of a workpiece after blackening by using the waste heat blackening liquid in example 1 and packaging the workpiece by an automatic packaging machine, wherein the workpiece is placed for 2 hours, 5 hours, 15 hours and 18 hours respectively under the corresponding humidity and temperature.
Detailed Description
Example 1
The invention is suitable for waste heat black liquor for workpieces packaged by a full-automatic weighing and packaging machine, and is prepared from the following components in parts by weight: 40 parts of polyethylene dioxythiophene emulsion, 0.1 part of monoethanolamine, 0.2 part of polyether defoamer, 2 parts of water-based black color paste and 56 parts of water; in the waste heat black liquor, the conductivity of the conductive polymer emulsion is 800S/cm;
And mixing the components in the formula amount, and uniformly stirring to obtain the scratch-resistant conductive polymer black liquor. The blackening solution of example 1 was diluted with water to a working solution with a mass fraction of 15%, the steel work piece at 450 ℃ was immersed in the solution, and after 20 seconds, the work piece was taken out and dried with hot air, and a blackening film layer with high corrosion resistance and a black and bright appearance was formed on the work piece surface. After being packaged by an automatic packaging machine, the workpiece is randomly extracted to carry out a neutral salt spray test, and the salt spray resistance test time is 18 hours.
Example 2
The invention is suitable for waste heat black liquor for workpieces packaged by a full-automatic weighing and packaging machine, and is prepared from the following components in parts by weight: 22.5 parts of polyethylene dioxythiophene emulsion, 12.5 parts of polyaniline emulsion, 1 part of triethanolamine, 1 part of organosilicon defoamer, 1.5 parts of water-based black color paste and 61.5 parts of tap water; in the waste heat black liquor, the conductivity of the conductive polymer emulsion is 500S/cm.
And mixing the components in the formula amount, and uniformly stirring to obtain the scratch-resistant conductive polymer black liquor. The blackening solution of example 2 was diluted with water to a working solution with a mass fraction of 15%, the steel work piece at 400 ℃ was immersed in the solution, and after 20 seconds, the work piece was taken out and dried with hot air, and a blackening film layer with high corrosion resistance and a black and bright appearance was formed on the work piece surface. After being packaged by an automatic packaging machine, the workpiece is randomly extracted to carry out a neutral salt spray test, and the salt spray resistance test time is 16 hours.
Example 3
The invention is suitable for waste heat black liquor for workpieces packaged by a full-automatic weighing and packaging machine, and is prepared from the following components in parts by weight: 10.5 parts of polythiophene emulsion, 21.5 parts of polyaniline emulsion, 0.2 part of monoethanolamine, 1 part of black color paste, 0.5 part of phthalocyanine blue, 1.0 part of phthalocyanine green, 0.5 part of organosilicon defoamer and 60 parts of RO water; in the waste heat black liquor, the conductivity of the conductive polymer emulsion is 600S/cm.
And mixing the components in the formula amount, and uniformly stirring to obtain the scratch-resistant conductive polymer black liquor. The blackening solution of example 3 was diluted with water to a working solution with a mass fraction of 15%, the steel work piece at 400 ℃ was immersed in the solution, and after 20 seconds, the work piece was taken out and dried with hot air, and a blackening film layer with high corrosion resistance and a black and bright appearance was formed on the work piece surface. After being packaged by an automatic packaging machine, the workpiece is randomly extracted to carry out a neutral salt spray test, and the salt spray resistance test time is 17 hours.
Comparative example 1
The waste heat black liquor for the workpiece, which is suitable for split charging of a full-automatic weighing and packaging machine, is prepared from the following components in parts by weight: 40 parts of polyethylene dioxythiophene emulsion, 0.1 part of monoethanolamine, 0.2 part of polyether defoamer, 2 parts of water-based black color paste and 56 parts of water; in the waste heat black liquor, the conductivity of the conductive polymer emulsion is 300S/cm; and mixing the components in the formula amount, and uniformly stirring to obtain the scratch-resistant conductive polymer black liquor. The blackening solution of example 1 was diluted with water to a working solution with a mass fraction of 15%, the steel work piece at 450 ℃ was immersed in the solution, and after 20 seconds, the work piece was taken out and dried with hot air, and a blackening film layer with high corrosion resistance and a black and bright appearance was formed on the work piece surface. After being packaged by an automatic packaging machine, the workpiece is randomly extracted to carry out a neutral salt spray test, and the salt spray resistance test time is 13.5 hours.
As can be seen from fig. 1 to 2, the workpiece treated in example 1 did not generate any significant red rust for 18 hours, compared to the problem of red rust generated in 2 hours in the prior art.
Claims (1)
1. The waste heat black liquor for the workpiece, which is suitable for split charging of a full-automatic weighing and packaging machine, is characterized by being prepared from the following components in parts by weight: 40 parts of polyethylene dioxythiophene emulsion, 0.1 part of monoethanolamine, 0.2 part of polyether defoamer, 2 parts of water-based black color paste and 56 parts of water; in the waste heat black liquor, the conductivity of the conductive polymer emulsion is 800S/cm;
diluting the waste heat black liquor with water to obtain 15% working solution, immersing steel workpiece at 450 ℃ in the solution, taking out the workpiece after 20 seconds, drying with hot air, and forming a black film layer with high corrosion resistance and black and bright appearance on the surface of the workpiece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211198317.1A CN115613019B (en) | 2022-09-29 | 2022-09-29 | Waste heat blackening liquid suitable for workpiece split charging of full-automatic weighing and packaging machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211198317.1A CN115613019B (en) | 2022-09-29 | 2022-09-29 | Waste heat blackening liquid suitable for workpiece split charging of full-automatic weighing and packaging machine |
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| CN115613019A CN115613019A (en) | 2023-01-17 |
| CN115613019B true CN115613019B (en) | 2024-08-09 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002327151A (en) * | 2001-05-07 | 2002-11-15 | Tech Taiyo Kogyo Co Ltd | Coating composition and method for preventing corrosion of weather resistance steel by using the same |
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| JP3736275B2 (en) * | 2000-03-31 | 2006-01-18 | 松下電器産業株式会社 | Conductive composition and method for producing the same |
| KR100404874B1 (en) * | 2000-12-28 | 2003-11-07 | 제일모직주식회사 | Conductive polymer cathode ray tube black coating layer and method for producing thereof |
| DE102004037542A1 (en) * | 2004-08-03 | 2006-02-23 | Chemetall Gmbh | Method, useful to protect metallic surface with corrosion inhibitor composition coating comprises applying coating on metallic surface, where the components comprising: deposit substance; and further components and/or matrix substance |
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| CN104313558A (en) * | 2014-10-09 | 2015-01-28 | 安徽工业大学 | Water-based rust converted antirust liquid and preparation method thereof |
| CN105315829B (en) * | 2015-12-02 | 2017-05-24 | 马鞍山市三江机械有限公司 | Room-temperature rust removal blackening agent and preparation method thereof |
| CN106433350B (en) * | 2016-10-31 | 2018-06-29 | 郑州安邦达水性材料有限公司 | High cracking resistance damping paint |
| CN108300173A (en) * | 2018-02-07 | 2018-07-20 | 东南大学 | A kind of steel surface low temperature exhaust heat blackening agent for surface and its methods for making and using same |
| CN110983311B (en) * | 2019-11-29 | 2021-12-14 | 南京科润工业介质股份有限公司 | Application of emulsified wax as film-forming agent in workpiece waste heat blackening and waste heat blackening preparation |
| CN110923683B (en) * | 2019-12-30 | 2021-11-02 | 湖南金化科技集团有限公司 | Self-repairing normal-temperature blackening agent for cold-drawn steel pipe and preparation method and application thereof |
| WO2022088142A1 (en) * | 2020-10-31 | 2022-05-05 | 河北比尔尼克新材料科技股份有限公司 | Water-based anti-static damping coating, preparation method therefor, and application thereof |
| CN114107971B (en) * | 2021-12-01 | 2023-12-22 | 湖南金化科技集团有限公司 | Polyaniline type normal-temperature blackening agent and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002327151A (en) * | 2001-05-07 | 2002-11-15 | Tech Taiyo Kogyo Co Ltd | Coating composition and method for preventing corrosion of weather resistance steel by using the same |
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