CN111910141A - Processing formula for hot dip galvanizing of steel member - Google Patents
Processing formula for hot dip galvanizing of steel member Download PDFInfo
- Publication number
- CN111910141A CN111910141A CN202010777557.1A CN202010777557A CN111910141A CN 111910141 A CN111910141 A CN 111910141A CN 202010777557 A CN202010777557 A CN 202010777557A CN 111910141 A CN111910141 A CN 111910141A
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- CN
- China
- Prior art keywords
- steel member
- hot dip
- dip galvanizing
- surfactant
- plating assistant
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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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
-
- 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
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a processing formula of steel member hot dip galvanizing, which comprises the following steps: the plating assistant agent comprises the following components: zinc chloride, sodium fluoride, sodium chloride, a surfactant and water, wherein the specific components are as follows: 110-210 g/L of zinc chloride, 15-50 g/L of sodium fluoride, 20-60 g/L of sodium chloride, 0.3-2 g/L of surfactant and the balance of water; mixing: pouring zinc chloride, sodium fluoride, sodium chloride, a surfactant and water into a mixing device according to a proportion, and mixing to obtain a plating assistant agent; the processing formula of the hot dip galvanizing steel member solves the problems that the prior plating assistant can generate ammonia and nitrogen pollution to the environment after excessive or accumulated use, the used temperature and humidity range is narrow, and the operation difficulty is increased.
Description
Technical Field
The invention relates to the technical field of hot galvanizing, in particular to a processing formula for hot dip galvanizing of a steel member.
Background
The steel member is a structural member manufactured by steel sections such as angle steel, steel plates, channel steel, H-shaped steel and the like or a combination of the steel sections, a layer of zinc chloride-ammonium salt film is formed on the surface of the steel member in the traditional plating assistant process, the used agent is a plating assistant agent, but the existing plating assistant agent contains ammonia and nitrogen elements, ammonia and nitrogen pollution is caused to the environment after excessive or accumulated use, the used temperature and humidity range is narrow, the operation difficulty is increased, and therefore the hot dip galvanizing processing formula for the steel member is provided to solve the problem.
Disclosure of Invention
The invention aims to provide a processing formula of hot dip galvanizing of a steel member, which solves the problems that the prior plating assistant contains ammonia and nitrogen elements, causes ammonia and nitrogen pollution to the environment after excessive or accumulated use, has narrow temperature and humidity range and increases operation difficulty.
In order to achieve the purpose, the invention provides the following technical scheme: a processing formula of steel member hot dip galvanizing comprises the following steps:
step 1: the plating assistant agent comprises the following components: zinc chloride, sodium fluoride, sodium chloride, a surfactant and water, wherein the specific components are as follows: 110-210 g/L of zinc chloride, 15-50 g/L of sodium fluoride, 20-60 g/L of sodium chloride, 0.3-2 g/L of surfactant and the balance of water;
step 2: mixing: pouring zinc chloride, sodium fluoride, sodium chloride, a surfactant and water into a mixing device according to a proportion, and mixing to obtain the plating assistant agent.
Preferably, in step 1, the surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
Preferably, in the step 2, the plating assistant temperature of the plating assistant agent is 50-98 ℃, and the plating assistant time is 50-100 s.
Preferably, in the step 2, the optimal plating assisting temperature is 90 ℃, and the optimal plating assisting time is 80 s.
Preferably, in the step 2, the concentration of the plating assistant agent is 145.3g/L at the lowest and 322g/L at the highest.
Preferably, in step 2, the PH of the plating assistant is at most 5 and at least 3.5.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the problems that the prior plating assistant contains ammonia and nitrogen elements, the environment is polluted by ammonia and nitrogen after excessive or accumulated use, the used temperature and humidity range is narrow, and the operation difficulty is increased by arranging the process flow of the composition and mixing of the plating assistant.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not intended to limit the scope of the present invention in any way.
The invention provides a technical scheme that: a processing formula of steel member hot dip galvanizing comprises the following steps:
step 1: the plating assistant agent comprises the following components: zinc chloride, sodium fluoride, sodium chloride, a surfactant and water, wherein the specific components are as follows: 110-210 g/L of zinc chloride, 15-50 g/L of sodium fluoride, 20-60 g/L of sodium chloride, 0.3-2 g/L of surfactant and the balance of water;
step 2: mixing: pouring zinc chloride, sodium fluoride, sodium chloride, a surfactant and water into a mixing device according to a proportion, and mixing to obtain the plating assistant agent.
The first implementation mode comprises the following steps: the processing formula of the steel member hot dip galvanizing of the embodiment comprises the following specific components in percentage by weight: 210g/L of zinc chloride, 50g/L of sodium fluoride, 60g/L of sodium chloride, 2g/L of surfactant and the balance of water. The surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
The use method of the processing formula for hot dip galvanizing of the steel member of the embodiment comprises the following steps: the steel member after conventional emulsification degreasing and rust removal treatment is immersed into a steel member hot dip galvanizing processing formula at the temperature of 60 ℃ for 1 minute, the metal workpiece is taken out, naturally dried or conventionally heated and dried, and then immersed into molten zinc or zinc alloy liquid according to a conventional process for hot dip galvanizing. The results of the comparative tests show that: the amount of scum and smoke dust in the plating assistant by adopting the formula of the embodiment is respectively reduced by about 30 percent and 80 percent compared with the amount of scum and smoke dust in the plating assistant by adopting the traditional zinc chloride-ammonium chloride. The surface of the plated steel member has no plating leakage phenomenon, and the color of the plating layer is uniform. Electrochemical test comparison results show that: the indexes of polarization resistance, corrosion current and the like of the sample of the ammonia-free plating-assistant coating are superior to those of the sample of the traditional zinc ammonium chloride plating-assistant process.
The second embodiment: the processing formula of the steel member hot dip galvanizing of the embodiment comprises the following specific components in percentage by weight: 180g/L of zinc chloride, 40g/L of sodium fluoride, 50g/L of sodium chloride, 1.5g/L of surfactant and the balance of water. The surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
The use method of the processing formula for hot dip galvanizing of the steel member of the embodiment comprises the following steps: the steel member after conventional emulsification degreasing and rust removal treatment is immersed into a steel member hot dip galvanizing processing formula at the temperature of 60 ℃ for 1 minute, the metal workpiece is taken out, naturally dried or conventionally heated and dried, and then immersed into molten zinc or zinc alloy liquid according to a conventional process for hot dip galvanizing. The results of the comparative tests show that: the results of the comparative tests show that: the amount of scum and smoke dust in the plating assistant by adopting the formula of the embodiment is respectively reduced by about 30 percent and 80 percent compared with the amount of scum and smoke dust in the plating assistant by adopting the traditional zinc chloride-ammonium chloride. The surface of the plated steel member has no plating leakage phenomenon, and the color of the plating layer is uniform. The zinc liquid has good fluidity and no bottom slag is generated.
The third embodiment is as follows: the processing formula of the steel member hot dip galvanizing of the embodiment comprises the following specific components in percentage by weight: 160g/L of zinc chloride, 30g/L of sodium fluoride, 30g/L of sodium chloride, 1g/L of surfactant and the balance of water. The surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
The use method of the processing formula for hot dip galvanizing of the steel member of the embodiment comprises the following steps: the steel member after conventional emulsification degreasing and rust removal treatment is immersed into a steel member hot dip galvanizing processing formula at the temperature of 70 ℃ for 1 minute, the metal workpiece is taken out, naturally dried or conventionally heated and dried, and then immersed into molten zinc or zinc alloy liquid according to a conventional process for hot dip galvanizing. The results of the comparative tests show that: the amount of scum and smoke dust in the plating assistant by adopting the formula of the embodiment is respectively reduced by about 35 percent and 80 percent compared with the amount of scum and smoke dust in the plating assistant by adopting the traditional zinc chloride-ammonium chloride. The surface of the plated steel member has no plating leakage phenomenon, and the color of the plating layer is uniform. The alloy liquid has good fluidity and no bottom slag is generated.
The fourth embodiment: the processing formula of the steel member hot dip galvanizing of the embodiment comprises the following specific components in percentage by weight: 110g/L of zinc chloride, 15g/L of sodium fluoride, 20g/L of sodium chloride, 0.3g/L of surfactant and the balance of water. The surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
The use method of the processing formula for hot dip galvanizing of the steel member of the embodiment comprises the following steps: the steel member after conventional emulsification degreasing and rust removal treatment is immersed into a steel member hot dip galvanizing processing formula at the temperature of 80 ℃ for 1.5 minutes, the steel member is taken out and is immersed into molten zinc or zinc alloy liquid for hot dip galvanizing according to a conventional process after natural drying or conventional heating and drying. The results of the comparative tests show that: the amount of scum and smoke dust in the plating assistant by adopting the formula of the embodiment is respectively reduced by about 25 percent and 70 percent compared with the amount of scum and smoke dust in the plating assistant by adopting the traditional zinc chloride-ammonium chloride. The surface of the plated steel member has no plating leakage phenomenon, and the color of the plating layer is uniform. The alloy liquid has good fluidity and no bottom slag is generated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A processing formula of steel member hot dip galvanizing is characterized in that: the method comprises the following steps:
step 1: the plating assistant agent comprises the following components: zinc chloride, sodium fluoride, sodium chloride, a surfactant and water, wherein the specific components are as follows: 110-210 g/L of zinc chloride, 15-50 g/L of sodium fluoride, 20-60 g/L of sodium chloride, 0.3-2 g/L of surfactant and the balance of water;
step 2: mixing: pouring zinc chloride, sodium fluoride, sodium chloride, a surfactant and water into a mixing device according to a proportion, and mixing to obtain the plating assistant agent.
2. A steel member hot dip galvanizing process recipe as claimed in claim 1, characterized in that: in step 1, the surfactant is a mixture of potassium perfluorobutyl sulfonate and potassium perfluorooctyl sulfonate.
3. A steel member hot dip galvanizing process recipe as claimed in claim 1, characterized in that: in the step 2, the plating assistant temperature of the plating assistant agent is 50-98 ℃, and the plating assistant time is 50-100 s.
4. A steel member hot dip galvanizing process recipe as claimed in claim 1, characterized in that: in the step 2, the optimal plating assisting temperature is 90 ℃, and the optimal plating assisting time is 80 s.
5. A steel member hot dip galvanizing process recipe as claimed in claim 1, characterized in that: in the step 2, the concentration of the plating assistant agent is 145.3g/L at the lowest and 322g/L at the highest.
6. A steel member hot dip galvanizing process recipe as claimed in claim 1, characterized in that: in the step 2, the pH value of the plating assistant agent is 5 at most and 3.5 at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777557.1A CN111910141A (en) | 2020-08-05 | 2020-08-05 | Processing formula for hot dip galvanizing of steel member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010777557.1A CN111910141A (en) | 2020-08-05 | 2020-08-05 | Processing formula for hot dip galvanizing of steel member |
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| Publication Number | Publication Date |
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| CN111910141A true CN111910141A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010777557.1A Pending CN111910141A (en) | 2020-08-05 | 2020-08-05 | Processing formula for hot dip galvanizing of steel member |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011900A (en) * | 2022-06-23 | 2022-09-06 | 上海聚丰热镀锌有限公司 | Ammonium-free plating assistant and hot galvanizing process using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575691A (en) * | 2009-05-22 | 2009-11-11 | 昆明理工大学 | Multifunctional plating assistant agent used for hot dipping |
| CN101575692A (en) * | 2009-05-22 | 2009-11-11 | 常熟市铁塔有限公司 | Ammonium-salt-free plating assistant agent used for hot dip galvanizing and technical methods for preparation and use thereof |
| CN102002661A (en) * | 2010-12-18 | 2011-04-06 | 昆明理工大学 | Low melting point flux for hot dip plating |
| CN102011080A (en) * | 2010-12-18 | 2011-04-13 | 昆明理工大学 | Low-melting-point and little-scum hot dipping auxiliary plating agent |
| CN103834888A (en) * | 2014-03-13 | 2014-06-04 | 昆明理工大学 | Ammonia-free fluxing agent for hot dipping and use method thereof |
-
2020
- 2020-08-05 CN CN202010777557.1A patent/CN111910141A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575691A (en) * | 2009-05-22 | 2009-11-11 | 昆明理工大学 | Multifunctional plating assistant agent used for hot dipping |
| CN101575692A (en) * | 2009-05-22 | 2009-11-11 | 常熟市铁塔有限公司 | Ammonium-salt-free plating assistant agent used for hot dip galvanizing and technical methods for preparation and use thereof |
| CN102002661A (en) * | 2010-12-18 | 2011-04-06 | 昆明理工大学 | Low melting point flux for hot dip plating |
| CN102011080A (en) * | 2010-12-18 | 2011-04-13 | 昆明理工大学 | Low-melting-point and little-scum hot dipping auxiliary plating agent |
| CN103834888A (en) * | 2014-03-13 | 2014-06-04 | 昆明理工大学 | Ammonia-free fluxing agent for hot dipping and use method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011900A (en) * | 2022-06-23 | 2022-09-06 | 上海聚丰热镀锌有限公司 | Ammonium-free plating assistant and hot galvanizing process using same |
| CN115011900B (en) * | 2022-06-23 | 2023-09-15 | 上海聚丰热镀锌有限公司 | Ammonium-free plating assistant and hot galvanizing process using same |
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Address after: 529100 Shuangshui Town Industrial Development Zone, Xinhui District, Jiangmen City, Guangdong Province Applicant after: Zengli steel pipe structure (Jiangmen) Co.,Ltd. Address before: 529100 Shuangshui Town Industrial Development Zone, Xinhui District, Jiangmen City, Guangdong Province Applicant before: Jiangmen Xinhui Yili Zengli metal products Co.,Ltd. |