CN105648379A - Hot-dip galvanizing technology - Google Patents
Hot-dip galvanizing technology Download PDFInfo
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- CN105648379A CN105648379A CN201410719113.7A CN201410719113A CN105648379A CN 105648379 A CN105648379 A CN 105648379A CN 201410719113 A CN201410719113 A CN 201410719113A CN 105648379 A CN105648379 A CN 105648379A
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Abstract
The invention discloses a hot-dip galvanizing technology. The hot-dip galvanizing technology is characterized by comprising steps as follows: 1) degreasing; 2) pickling; 3) preparation of a dip plating aid; 4) drying and preheating; 5) hot-dip galvanizing; 6) arrangement: workpiece arrangement after plating mainly includes removal of surface residual zinc and zinc nodules and is mainly completed by the aid of a special vibrator for hot-dip galvanizing; 7) passivation: passivation is performed by the aid of chromate such as 80-100 g/L of Na2Cr2O7 and 3-4 ml/L of sulfuric acid; 8) cooling: water cooling is adopted, but the temperature cannot be too low or too high, and the temperature is generally not lower than 30 DEG C and not higher than 70 DEG C. The hot-dip galvanizing technology is simple, multiple repeated procedures are avoided, the working efficiency is improved, and the galvanizing effect is good.
Description
Technical field
The present invention relates to a kind of hot dip galvanizing process.
Background technology
Zinc is soluble in acid, also can be dissolved in alkali, therefore claiming it is amphoteric metal. Zinc changes hardly in dry air. In malaria, zinc surface can generate the basic zinc carbonate film of densification. Containing in sulfur dioxide, hydrogen sulfide and oceanic atmosphere, the corrosion resistance of zinc is poor, and especially hot and humid containing in organic acid atmosphere, zinc coating is very easily corroded.
Current hot dip galvanizing process complex manufacturing, it does not have unified standard, the hot dip galvanizing process quality causing production is uneven, and a lot of operations that repeat also make under production efficiency, increases the work burden of workman, makes the competitiveness of product in market not high simultaneously.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of hot dip galvanizing process, and this hot dip galvanizing process is simple, eliminates a lot of repeatability operation, improves work efficiency, zinc-plated effective.
For achieving the above object, the invention provides a kind of hot dip galvanizing process, it is characterised in that comprise the steps: 1) defat: chemical deoiling and degreasing or water-base metal degreased cleaning agent can be adopted to deoil, reach workpiece and be flooded completely till profit;
2) pickling: adopt H2SO415%, thiourea 0.1%, 40��60 DEG C or with HCl20%, hexamethylenamine 3��5g/L, 20��40 DEG C carry out pickling;
3) preparation leaching fluxing agent: NH4Cl100-150g/L, ZnCl2150-180g/L, 70��80 DEG C, 1��2min, and add a certain amount of anti-knock agent;
4) drying preheating: in order to prevent workpiece from deforming owing to temperature sharply raises when immersion plating, and remove residual moisture, it is prevented that produce quick-fried zinc, cause that zinc liquid is quick-fried to be spattered, preheating is generally 80��140 DEG C;
5) galvanizing: will control the speed that zinc liquid temperature, immersion plating time and workpiece draw from zinc liquid well, draw speed and be generally 1.5 meters/min, zinc coating thickness depends on zinc liquid temperature, galvanizing time, steel material and zinc liquid composition, general producer, in order to prevent workpiece high temperature deformation and reduce owing to iron loss causes cadmia, all adopts 450��470 DEG C, 0.5��1.5min;
6) arrange: after plating, workpiece is arranged and mainly remove zinc and list edge more than surface, complete with adopting the special electromagnetic shaker of galvanizing;
7) passivation: with chromating, such as Na2Cr2O780��100g/L, sulphuric acid 3��4ml/;
8) cooling: adopt water-cooled, but temperature can not too low also can not be too high, be generally not less than 30 DEG C not higher than 70 DEG C.
The invention has the beneficial effects as follows: the hot dip galvanizing process of the present invention is simple, eliminate a lot of repeatability operation, improve work efficiency, zinc-plated effective.
Detailed description of the invention
Technical scheme disclosed by the invention is a kind of hot dip galvanizing process, it is characterised in that comprise the steps: 1) defat: chemical deoiling and degreasing or water-base metal degreased cleaning agent can be adopted to deoil, reach workpiece and be flooded completely till profit;
2) pickling: adopt H2SO415%, thiourea 0.1%, 40��60 DEG C or with HCl20%, hexamethylenamine 3��5g/L, 20��40 DEG C carry out pickling, add corrosion inhibiter and can prevent matrix excessive erosion and minimizing iron-based body hydrogen-sucking amount,
It is simultaneously introduced fog inhibitor and suppresses acid mist effusion;
3) preparation leaching fluxing agent: NH4Cl100-150g/L, ZnCl2150-180g/L, 70��80 DEG C, 1��2min, and add a certain amount of anti-knock agent;
4) drying preheating: in order to prevent workpiece from deforming owing to temperature sharply raises when immersion plating, and remove residual moisture, it is prevented that produce quick-fried zinc, cause that zinc liquid is quick-fried to be spattered, preheating is generally 80��140 DEG C;
5) galvanizing: will control the speed that zinc liquid temperature, immersion plating time and workpiece draw from zinc liquid well, draw speed and be generally 1.5 meters/min, zinc coating thickness depends on zinc liquid temperature, galvanizing time, steel material and zinc liquid composition, general producer, in order to prevent workpiece high temperature deformation and reduce owing to iron loss causes cadmia, all adopts 450��470 DEG C, 0.5��1.5min;
6) arrange: after plating, workpiece is arranged and mainly remove zinc and list edge more than surface, complete with adopting the special electromagnetic shaker of galvanizing;
7) passivation: with chromating, such as Na2Cr2O780��100g/L, sulphuric acid 3��4ml/;
8) cooling: adopt water-cooled, but temperature can not too low also can not be too high, be generally not less than 30 DEG C not higher than 70 DEG C.
The hot dip galvanizing process of the present invention is simple, eliminates a lot of repeatability operation, improves work efficiency, zinc-plated effective.
The preferred embodiment of the present invention described in detail above. Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work. Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (1)
1. a hot dip galvanizing process, it is characterised in that comprise the steps: 1) defat: chemical deoiling and degreasing or water-base metal degreased cleaning agent can be adopted to deoil, reach workpiece and be flooded completely till profit;
2) pickling: adopt H2SO415%, thiourea 0.1%, 40��60 DEG C or with HCl20%, hexamethylenamine 3��5g/L, 20��40 DEG C carry out pickling, add corrosion inhibiter and can prevent matrix excessive erosion and minimizing iron-based body hydrogen-sucking amount,
It is simultaneously introduced fog inhibitor and suppresses acid mist effusion;
3) preparation leaching fluxing agent: NH4Cl100-150g/L, ZnCl2150-180g/L, 70��80 DEG C, 1��2min, and add a certain amount of anti-knock agent;
4) drying preheating: in order to prevent workpiece from deforming owing to temperature sharply raises when immersion plating, and remove residual moisture, it is prevented that produce quick-fried zinc, cause that zinc liquid is quick-fried to be spattered, preheating is generally 80��140 DEG C;
5) galvanizing: will control the speed that zinc liquid temperature, immersion plating time and workpiece draw from zinc liquid well, draw speed and be generally 1.5 meters/min, zinc coating thickness depends on zinc liquid temperature, galvanizing time, steel material and zinc liquid composition, general producer, in order to prevent workpiece high temperature deformation and reduce owing to iron loss causes cadmia, all adopts 450��470 DEG C, 0.5��1.5min;
6) arrange: after plating, workpiece is arranged and mainly remove zinc and list edge more than surface, complete with adopting the special electromagnetic shaker of galvanizing;
7) passivation: with chromating, such as Na2Cr2O780��100g/L, sulphuric acid 3��4ml/;
8) cooling: adopt water-cooled, but temperature can not too low also can not be too high, be generally not less than 30 DEG C not higher than 70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719113.7A CN105648379A (en) | 2014-12-03 | 2014-12-03 | Hot-dip galvanizing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719113.7A CN105648379A (en) | 2014-12-03 | 2014-12-03 | Hot-dip galvanizing technology |
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| Publication Number | Publication Date |
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| CN105648379A true CN105648379A (en) | 2016-06-08 |
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| CN201410719113.7A Pending CN105648379A (en) | 2014-12-03 | 2014-12-03 | Hot-dip galvanizing technology |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282871A (en) * | 2016-10-08 | 2017-01-04 | 周峰 | A kind of steel plate hot dip galvanizing process flow process |
| CN106367705A (en) * | 2016-11-22 | 2017-02-01 | 常州大学 | Secondary galvanizing technology for structural steel containing silicon |
| CN107378397A (en) * | 2017-07-17 | 2017-11-24 | 承德市帝圣金属复合材料有限公司 | A kind of preparation method of metallic composite |
| CN107513681A (en) * | 2017-08-18 | 2017-12-26 | 桐乡市铁盛线路器材有限公司 | A kind of hot-dip galvanizing technique |
| CN108754375A (en) * | 2018-08-17 | 2018-11-06 | 云南宏盛铁塔实业有限公司 | A kind of hot dip galvanizing process |
| CN109852914A (en) * | 2019-03-01 | 2019-06-07 | 安徽省庐峰镀锌有限公司 | A kind of high-strength alloyed steel plate hot dip galvanizing process |
| CN110629144A (en) * | 2019-10-31 | 2019-12-31 | 溧阳市中大电力交通装备有限公司 | Channel steel hot galvanizing process |
| CN111363993A (en) * | 2020-03-24 | 2020-07-03 | 句容市茅山交通工程镀锌材料有限公司 | Modified galvanizing treatment process for steel |
| CN114807804A (en) * | 2022-03-09 | 2022-07-29 | 仙桃市环美化工有限公司 | Multifunctional explosion-proof agent |
-
2014
- 2014-12-03 CN CN201410719113.7A patent/CN105648379A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106282871A (en) * | 2016-10-08 | 2017-01-04 | 周峰 | A kind of steel plate hot dip galvanizing process flow process |
| CN106367705A (en) * | 2016-11-22 | 2017-02-01 | 常州大学 | Secondary galvanizing technology for structural steel containing silicon |
| CN107378397A (en) * | 2017-07-17 | 2017-11-24 | 承德市帝圣金属复合材料有限公司 | A kind of preparation method of metallic composite |
| CN107513681A (en) * | 2017-08-18 | 2017-12-26 | 桐乡市铁盛线路器材有限公司 | A kind of hot-dip galvanizing technique |
| CN107513681B (en) * | 2017-08-18 | 2019-12-20 | 桐乡市铁盛线路器材有限公司 | Hot-dip galvanizing process |
| CN108754375A (en) * | 2018-08-17 | 2018-11-06 | 云南宏盛铁塔实业有限公司 | A kind of hot dip galvanizing process |
| CN109852914A (en) * | 2019-03-01 | 2019-06-07 | 安徽省庐峰镀锌有限公司 | A kind of high-strength alloyed steel plate hot dip galvanizing process |
| CN110629144A (en) * | 2019-10-31 | 2019-12-31 | 溧阳市中大电力交通装备有限公司 | Channel steel hot galvanizing process |
| CN111363993A (en) * | 2020-03-24 | 2020-07-03 | 句容市茅山交通工程镀锌材料有限公司 | Modified galvanizing treatment process for steel |
| CN114807804A (en) * | 2022-03-09 | 2022-07-29 | 仙桃市环美化工有限公司 | Multifunctional explosion-proof agent |
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Application publication date: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |