CN101078096A - Strip steel continuous zinc heat coating process - Google Patents
Strip steel continuous zinc heat coating process Download PDFInfo
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- CN101078096A CN101078096A CNA2006100445797A CN200610044579A CN101078096A CN 101078096 A CN101078096 A CN 101078096A CN A2006100445797 A CNA2006100445797 A CN A2006100445797A CN 200610044579 A CN200610044579 A CN 200610044579A CN 101078096 A CN101078096 A CN 101078096A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A technology method about continuous hot dip galvanizing on zonal steel, the method contains: the first cleaning step to clean and get rid of the remainder on the surface of zonal steel; The alkaline cleaning step to get rid of the fat on the surface of it; The acidwashing step to get rid of the oxidation skin on the surface of it. The second cleaning step: To get rid of the product of the alkaline cleaning and acidwashing on the surface of zonal steel. Heat treatment step: to realize the heat treatment of the zonal steel in the shielding gas and deliver the zonal steel to the zincification step in the ambience of shielding gas. Heat zincification step: to install clad layer on the surface of zonal steel. The benefit of this patent is: the patent contains the first cleaning step, alkaline cleaning step, acidwashing step and the second cleaning step, it can get rid of oxidation skin, fat and the remainder on surface, and it can activate the surface of steel, decrease interfacial force of molten metal, improve the soakage ability of zinc liquid, and increase the binding capacity of the zinc clad layer.
Description
Affiliated technical field
The present invention relates to a kind of processing method with the steel continuous hot galvanizing.
Background technology
The processing method of traditional band steel continuous hot galvanizing comprises: cleaning step: be used to clean the resistates of removing belt steel surface; Heat treatment step: be used in shielding gas atmosphere, will being with steel to deliver to then in zinc-plated operation at shielding gas atmosphere annealing thermal treatment band steel; Pot galvanize step: be used for coating on belt steel surface.Just begin to heat-treat step through behind the cleaning step, then the fat of belt steel surface and oxide skin can't be removed, and not only can improve molten metal surface tension force, but also can reduce the wetting capacity of zinc liquid, reduce the bonding force of coating.
Summary of the invention
Can not remove the fat of belt steel surface and the deficiency of oxide skin for the processing method that overcomes existing band steel continuous hot galvanizing is existing, the invention provides a kind of processing method with the steel continuous hot galvanizing, this processing method can be removed the fat and the oxide skin of belt steel surface, the activation steel surface, reduce molten metal surface tension force, improve the wetting capacity of zinc liquid, increase the bonding force of zinc coating.
The technical solution adopted for the present invention to solve the technical problems is: a kind of processing method with the steel continuous hot galvanizing, and it is characterized in that: it comprises:
First cleaning step: be used to clean the resistates of removing belt steel surface;
Alkali cleaning step: the fat that is used to remove belt steel surface;
Acid pickling step: the oxide skin that is used to remove belt steel surface;
Second cleaning step: be used for cleaning the alkali cleaning of removal belt steel surface, acid-leached product;
Heat treatment step: be used in shielding gas atmosphere, will being with steel to deliver to then in zinc-plated operation at shielding gas atmosphere thermal treatment band steel;
Pot galvanize step: be used for coating on belt steel surface.
Also comprise between described second cleaning step and the heat treatment step:
Protective layer plating step: be used for plating the anti-oxidation protective layer of one deck for belt steel surface, in shielding gas atmosphere, will be with steel to deliver to then in heat treatment step in shielding gas atmosphere.
Described protective layer is a nickel dam.
Nickel layer thickness is (5 sodium rice-1 micron).
Described nickel dam is to adopt plating mode to cross.
The solution that adopts in the described alkali cleaning step is sodium hydroxide solution; The solution that adopts in the described acid pickling step is hydrochloric acid soln.
Described shielding gas composition mainly comprises (94-99.5) % nitrogen and (6-0.5) hydrogen of %.
Described shielding gas composition mainly comprises the hydrogen of 95% nitrogen and 5%.
Thermal treatment is annealing thermal treatment in the described heat treatment step, and annealing temperature is (780-840) degree in this annealing furnace.
The invention has the beneficial effects as follows:
One, processing method of the present invention comprise first cleaning step, alkali cleaning step, acid pickling step and second cleaning step, but the resistates on scale removal, fat and surface, the activation steel surface, reduce molten metal surface tension force, improve the wetting capacity of zinc liquid, increase the bonding force of zinc coating;
Its two, the protective layer plating step, by protective layer boundary belt steel, oxidized once more to prevent being with steel;
Its three, protective layer is a nickel dam, this nickel dam also helps the bonding force that increases zinc coating;
Its four, nickel layer thickness is 5 sodium rice-1 micron, is beneficial to the bonding force that increases zinc coating;
They are five years old; behind first cleaning step, alkali cleaning step, acid pickling step and second cleaning step; (94-99.5) % nitrogen in the annealing furnace and (6-0.5) shielding gas of the hydrogen of %; just be enough to reduce oxygen level through the remnants of the belt steel surface after the above-mentioned cleaning through calculating and test this hydrogen content; because within the scope of hydrogen content less than explosion hazard; then can reduce the sealing grade of shielding gas; also stop combustion explosion danger; also reduced the consumption of making the ammonia of shielding gas, reduced cost.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the synoptic diagram of processing method of the present invention.
Embodiment
A kind of processing method with the steel continuous hot galvanizing, as shown in Figure 1, it comprises:
First cleaning step: be used to clean the resistates of removing belt steel surface;
Alkali cleaning step: the fat that is used to remove belt steel surface, the solution that adopts in this alkali cleaning step is 15% sodium hydroxide solution, the solution that present embodiment adopts is sodium hydroxide solution, but do not exceed, can adopt the mixed solution of sodium hydroxide, water glass, sodium phosphate, yellow soda ash etc. yet with sodium hydroxide solution;
Acid pickling step: be used to remove the oxide skin and the reaction product of belt steel surface, the solution that adopts in this acid pickling step is hydrochloric acid soln, and the solution that present embodiment adopts is hydrochloric acid soln, but does not exceed with hydrochloric acid soln, also can adopt sulfuric acid etc.;
Second cleaning step: be used for cleaning the alkali cleaning of removal belt steel surface, acid-leached product;
Protective layer plating step: be used for plating the nickel dam of the anti-oxidation thickness of one deck for belt steel surface, in shielding gas atmosphere, will be with steel to deliver to then in heat treatment step for (5 sodium rice-1 micron) in shielding gas atmosphere;
Heat treatment step: be used in shielding gas atmosphere, will being with steel to deliver to then in zinc-plated operation at the shielding gas atmosphere thermal treatment band steel of annealing;
Pot galvanize step: be used for coating on belt steel surface.
The shielding gas composition mainly comprises (94-99.5) % nitrogen and (6-0.5) hydrogen of %.Wherein, a nitrogen content gets 95%, and hydrogen content gets 5%, and above-mentioned ratio is a volume ratio.Through calculating and experiment, under the condition of above-mentioned shielding gas content, annealing temperature is (780-840) degree in this annealing furnace.
As required, in second cleaning step and protective layer plating step process, also comprise a drying step, be used for the arid zones steel.
As mentioned above, only for preferred embodiment of the present invention, so can not limit scope of the invention process with this, i.e. the equivalence of doing according to the present patent application claim and description changes and modification, all should still belong in the scope that patent of the present invention contains.
Claims (7)
1. processing method with the steel continuous hot galvanizing, it is characterized in that: it comprises:
First cleaning step: be used to clean the resistates of removing belt steel surface;
Alkali cleaning step: the fat that is used to remove belt steel surface;
Acid pickling step: the oxide skin that is used to remove belt steel surface;
Second cleaning step: be used for cleaning the alkali cleaning of removal belt steel surface, acid-leached product;
Heat treatment step: be used in shielding gas atmosphere, will being with steel to deliver to then in zinc-plated operation at shielding gas atmosphere thermal treatment band steel;
Pot galvanize step: be used for coating on belt steel surface.
2. the processing method of band steel continuous hot galvanizing according to claim 1 is characterized in that: also comprise between described second cleaning step and the heat treatment step:
Protective layer plating step: be used for plating the anti-oxidation protective layer of one deck for belt steel surface, in shielding gas atmosphere, will be with steel to deliver to then in heat treatment step in shielding gas atmosphere.
3. the processing method of band steel continuous hot galvanizing according to claim 2 is characterized in that: described protective layer is a nickel dam, and its thickness is (5 sodium rice-1 micron).
4. the processing method of band steel continuous hot galvanizing according to claim 1 is characterized in that: the solution that adopts in the described alkali cleaning step is sodium hydroxide solution; The solution that adopts in the described acid pickling step is hydrochloric acid soln.
5. the processing method of band steel continuous hot galvanizing according to claim 1 is characterized in that: described shielding gas composition mainly comprises (94-99.5) % nitrogen and (6-0.5) hydrogen of %.
6. the processing method of band steel continuous hot galvanizing according to claim 5 is characterized in that: described shielding gas composition mainly comprises the hydrogen of 95% nitrogen and 5%.
7. the processing method of band steel continuous hot galvanizing according to claim 6 is characterized in that: thermal treatment is annealing thermal treatment in the described heat treatment step, and annealing temperature is (780-840) degree in this annealing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100445797A CN101078096A (en) | 2006-05-25 | 2006-05-25 | Strip steel continuous zinc heat coating process |
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| CNA2006100445797A CN101078096A (en) | 2006-05-25 | 2006-05-25 | Strip steel continuous zinc heat coating process |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029307A (en) * | 2010-12-13 | 2011-04-27 | 江西百川电导体有限公司 | Production process for zinc cladding steel for cable self-supporting wire |
| WO2011079554A1 (en) * | 2009-12-28 | 2011-07-07 | 江苏麟龙新材料股份有限公司 | Method for preparing contact corrosion resistant coating on surface of titanium alloy |
| CN102625863A (en) * | 2009-08-25 | 2012-08-01 | 蒂森克虏伯钢铁欧洲股份公司 | Method for producing a steel component provided with a metal coating protecting against corrosion and steel component |
| CN102776460A (en) * | 2012-03-19 | 2012-11-14 | 江苏大力神科技股份有限公司 | Production method of thin steel strip hot galvanizing |
| CN105112914A (en) * | 2015-08-31 | 2015-12-02 | 中国钢研科技集团有限公司 | Continuous hot-dip galvanizing device and continuous hot-dip galvanizing method |
| CN106823669A (en) * | 2017-02-17 | 2017-06-13 | 廊坊广惠气体设备有限公司 | The technique and its device of a kind of annealing furnace tail gas recycle purification |
| CN107377331A (en) * | 2017-06-28 | 2017-11-24 | 四川天宏不锈钢有限责任公司 | A kind of preparation method of no fingerprint wire drawing stainless-steel sheet |
| CN108060382A (en) * | 2017-12-12 | 2018-05-22 | 首钢集团有限公司 | A kind of method for improving zinc-aluminium Mg Alloy Coating steel plate glueability |
| CN108179255A (en) * | 2017-12-29 | 2018-06-19 | 重庆全茂合渝科技有限公司 | A kind of clutch of motorcycle control stick normalizing process |
| CN111941290A (en) * | 2020-07-24 | 2020-11-17 | 绍兴电力设备有限公司 | Galvanizing process for steel |
| CN112239841A (en) * | 2020-11-02 | 2021-01-19 | 马鞍山钢铁股份有限公司 | Control method for edge pocking mark defects of continuous hot-dip galvanized strip steel |
| CN114729413A (en) * | 2019-11-12 | 2022-07-08 | 斯佩拉有限公司 | Conditioned heat treatment of foil |
| CN115094205A (en) * | 2022-06-27 | 2022-09-23 | 包头钢铁（集团）有限责任公司 | Hot galvanizing production method of low-cost steel plate for light steel keel |
-
2006
- 2006-05-25 CN CNA2006100445797A patent/CN101078096A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625863A (en) * | 2009-08-25 | 2012-08-01 | 蒂森克虏伯钢铁欧洲股份公司 | Method for producing a steel component provided with a metal coating protecting against corrosion and steel component |
| CN102625863B (en) * | 2009-08-25 | 2015-11-25 | 蒂森克虏伯钢铁欧洲股份公司 | Be provided with manufacture method and the steel part of the steel part of the coating for protection against corrosion of metal |
| WO2011079554A1 (en) * | 2009-12-28 | 2011-07-07 | 江苏麟龙新材料股份有限公司 | Method for preparing contact corrosion resistant coating on surface of titanium alloy |
| CN102029307A (en) * | 2010-12-13 | 2011-04-27 | 江西百川电导体有限公司 | Production process for zinc cladding steel for cable self-supporting wire |
| CN102029307B (en) * | 2010-12-13 | 2011-12-14 | 江西百川电导体有限公司 | Production process for zinc cladding steel for cable self-supporting wire |
| CN102776460A (en) * | 2012-03-19 | 2012-11-14 | 江苏大力神科技股份有限公司 | Production method of thin steel strip hot galvanizing |
| CN105112914A (en) * | 2015-08-31 | 2015-12-02 | 中国钢研科技集团有限公司 | Continuous hot-dip galvanizing device and continuous hot-dip galvanizing method |
| CN106823669A (en) * | 2017-02-17 | 2017-06-13 | 廊坊广惠气体设备有限公司 | The technique and its device of a kind of annealing furnace tail gas recycle purification |
| CN107377331A (en) * | 2017-06-28 | 2017-11-24 | 四川天宏不锈钢有限责任公司 | A kind of preparation method of no fingerprint wire drawing stainless-steel sheet |
| CN108060382A (en) * | 2017-12-12 | 2018-05-22 | 首钢集团有限公司 | A kind of method for improving zinc-aluminium Mg Alloy Coating steel plate glueability |
| CN108060382B (en) * | 2017-12-12 | 2020-07-24 | 首钢集团有限公司 | Method for improving adhesive property of zinc-aluminum-magnesium alloy coating steel plate |
| CN108179255A (en) * | 2017-12-29 | 2018-06-19 | 重庆全茂合渝科技有限公司 | A kind of clutch of motorcycle control stick normalizing process |
| CN114729413A (en) * | 2019-11-12 | 2022-07-08 | 斯佩拉有限公司 | Conditioned heat treatment of foil |
| CN111941290A (en) * | 2020-07-24 | 2020-11-17 | 绍兴电力设备有限公司 | Galvanizing process for steel |
| CN111941290B (en) * | 2020-07-24 | 2021-04-06 | 绍兴电力设备有限公司 | Galvanizing process for steel |
| CN112239841A (en) * | 2020-11-02 | 2021-01-19 | 马鞍山钢铁股份有限公司 | Control method for edge pocking mark defects of continuous hot-dip galvanized strip steel |
| CN115094205A (en) * | 2022-06-27 | 2022-09-23 | 包头钢铁（集团）有限责任公司 | Hot galvanizing production method of low-cost steel plate for light steel keel |
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Open date: 20071128 |