CN107385454A - A kind of inexpensive hot-strip acid washing method - Google Patents
A kind of inexpensive hot-strip acid washing method Download PDFInfo
- Publication number
- CN107385454A CN107385454A CN201710640358.4A CN201710640358A CN107385454A CN 107385454 A CN107385454 A CN 107385454A CN 201710640358 A CN201710640358 A CN 201710640358A CN 107385454 A CN107385454 A CN 107385454A
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- CN
- China
- Prior art keywords
- acid
- strip
- pickling
- descaling bath
- hot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- 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
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
-
- 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
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
Abstract
The invention discloses a kind of inexpensive hot-strip acid washing method, hot-strip is 100m/min~220m/min in the speed of service of pickling section, 1#, 2#, 3# descaling bath that strip is arranged through overpickling section successively, concentration of hydrochloric acid is followed successively by under conditions of 40g/L~60g/L, 80g/L~100g/L, 110g/L~140g/L in 1#, 2#, 3# descaling bath, acid liquor temperature is set gradually as 70 DEG C~75 DEG C, 70 DEG C~75 DEG C, 65 DEG C~75 DEG C in 1#, 2#, 3# descaling bath, and the addition of corrosion inhibiter is 0.4 ‰~the 1 ‰ of acid solution volume in acid solution.The present invention is consumed by controlling pickle temperature and corrosion inhibiter addition to reduce the energy medium of strip pickling, so as to reduce the cost of pickling production.
Description
Technical field
The invention belongs to steel rolling field, and in particular to a kind of inexpensive hot-strip acid washing method.
Background technology
At present, steel industry faces the office that human cost and Material Cost constantly rise, end product price persistently drops
Face, steel products profit margin are constantly compressed, and steel plant only continue digging technology potential, realize that cost efficiency could solve
This problem, adapt to current new situation.
Main process raw material of the commodity such as household electrical appliances, automobile is all cold-reduced sheet, and pickling is as must before cold rolling after hot strip rolling
One step of palpus, not only influence the product quality of cold rolling and following process, and an important cost efficiency profit mining
Link.By the deep excavation to hot-strip pickling production technology, it is found that acid-washed product mainly has deficient pickling and overpickling two
Kind defect, following process and product quality are had a great influence wherein owing pickling defect, and slight overpickling then influences smaller, mesh
During preceding pickling production, to avoid the occurrence of deficient pickling defect, the mode of the slight overpickling of the high acid liquor temperature of generally use produces, together
When caused by order to reduce overpickling iron loss increase, add excessive corrosion inhibiter to reduce iron loss amount, this production method is made
The problem of being wasted into energy medium.
The content of the invention
This problem faced for current pickling production, it is an object of the invention to propose that one kind can reduce pickling cost
Strip pickling method, by control pickle temperature and corrosion inhibiter addition reduce energy medium consume, so as to reduce life
Produce cost.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of inexpensive hot-strip acid washing method, hot-strip pickling section the speed of service for 100m/min~
220m/min, 1#, 2#, 3# descaling bath that strip is arranged through overpickling section successively, concentration of hydrochloric acid is successively in 1#, 2#, 3# descaling bath
Under conditions of 40g/L~60g/L, 80g/L~100g/L, 110g/L~140g/L, acid liquor temperature in 1#, 2#, 3# descaling bath
Set gradually as 70 DEG C~75 DEG C, 70 DEG C~75 DEG C, 65 DEG C~75 DEG C, the addition of corrosion inhibiter is acid solution volume in acid solution
0.4 ‰~1 ‰.
Preferably, acid liquor temperature respectively is 75 DEG C, 75 DEG C, 73 DEG C in 1#, 2#, 3# descaling bath, the acid solution
The addition of middle corrosion inhibiter is the 1 ‰ of acid solution volume.
Preferably, acid liquor temperature respectively is 75 DEG C, 75 DEG C, 75 DEG C in 1#, 2#, 3# descaling bath, the acid solution
The addition of middle corrosion inhibiter is the 0.7 ‰ of acid solution volume.
Corrosion inhibiter used in above technical scheme is Quaker ACTIVOL 1803.
The beneficial effects of the present invention are：The pickling defect of hot-strip is mainly overpickling and deficient pickling, slight mistake
Pickling defect is smaller on strip quality influence, and owes pickling defect and following process and product quality are had a great influence, so hot rolling
Especially prevention is needed to occur owing pickling defect during strip pickling.The main technologic parameters of pickling production have the operation speed of hot-strip
Degree, acid strength, acid liquor temperature, corrosion inhibiter addition also have an impact to acid-washed product quality.The acid that conventional acid cleaning process uses
Liquid temperature degree is 85 DEG C or so, and higher pickling temperature causes the overpickling defect of strip, makes the iron loss of strip increase, and product is received
Yield is reduced, this problem caused by avoid overpickling, and 1 ‰~3 ‰ inhibition of acid solution volume is added generally in acid solution
Agent reduces iron loss.This conventional mode of production, not only increases corrosion inhibiter use cost, also result in the energy of heating steam
Consumption increase, and there is the problems such as pickler aging quickening.So The present invention gives a kind of pickling production technology, make hot-rolled strip
Steel concentration of hydrochloric acid in conventional operation speed 100m/min~220m/min, 1#, 2#, 3# descaling bath of pickling section is followed successively by 40g/
Under conditions of L~60g/L, 80g/L~100g/L, 110g/L~140g/L, acid liquor temperature is respectively in 1#, 2#, 3# descaling bath
70 DEG C~75 DEG C, 70 DEG C~75 DEG C, 65 DEG C~75 DEG C, the addition of corrosion inhibiter is only 0.4 ‰~the 1 ‰ of acid solution volume in acid solution
When, up-to-standard product is produced, so as to realize inexpensive pickling production.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out
Explanation：
Fig. 1 is the product figure drawn by the production of the acid cleaning process of embodiment 1；
Fig. 2 is to produce obtained product figure by the acid cleaning process of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Embodiment 1
Certain factory's sour rolling mill production line uses turbulent flow type chlorohydric acid pickling, and pickling section is placed with 1#, 2#, 3# descaling bath successively,
When producing ordinary carbon steel, in descaling bath concentration of hydrochloric acid be followed successively by 40g/L~50g/L, 85g/L~100g/L, 110g/L~
135g/L, pickle temperature are followed successively by 75 DEG C, 75 DEG C, 73 DEG C, and the addition of corrosion inhibiter is the 1 ‰ of acid solution volume in pickle,
The corrosion inhibiter is Quaker ACTIVOL 1803.Strip is 100m/min~220m/ in the conventional operation speed of pickling section
min.After tested, strip qualified product after the pickling processes of above-mentioned condition, is shown in Fig. 1.
Embodiment 2
Certain factory's sour rolling mill production line uses turbulent flow type chlorohydric acid pickling, and pickling section is placed with 1#, 2#, 3# descaling bath successively,
When producing ordinary carbon steel, in descaling bath concentration of hydrochloric acid be followed successively by 40g/L~50g/L, 85g/L~100g/L, 110g/L~
135g/L, pickle temperature are followed successively by 75 DEG C, 75 DEG C, 75 DEG C, and the addition of corrosion inhibiter is acid solution volume in pickle
0.7 ‰, the corrosion inhibiter is Quaker ACTIVOL 1803.Strip pickling section conventional operation speed for 100m/min~
200m/min.After tested, strip qualified product after the pickling processes of above-mentioned condition, is shown in Fig. 2.
By using embodiments of the invention 1 and 2 inexpensive acid washing method of embodiment and the inhibition of conventional acid washing method production
Agent consumption, average acid liquor temperature and heating steam consumption quantity are contrasted, and draw the energy consumption comparison of table 1.
The conventional method of table 1 and embodiment part energy consumption comparison
As can be seen from Table 1, the acid washing method that provides of the present invention, can make the hot-strip be in the speed of service of pickling section
In 100m/min~220m/min, 1#, 2#, 3# descaling bath concentration of hydrochloric acid be followed successively by 40g/L~60g/L, 80g/L~100g/L,
Under conditions of 110g/L~140g/L, in 1#, 2#, 3# descaling bath acid liquor temperature be respectively 70 DEG C~75 DEG C, 70 DEG C~75 DEG C, 65
DEG C~75 DEG C, when the addition of corrosion inhibiter is only 0.4 ‰~the 1 ‰ of acid solution volume in acid solution, the strip quality that pickling comes out closes
Lattice, this reduces production cost to a certain extent.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (3)
1. a kind of inexpensive hot-strip acid washing method, it is characterised in that hot-strip is in the speed of service of pickling section
100m/min~220m/min, 1#, 2#, 3# descaling bath that strip is arranged through overpickling section successively, 1#, 2#, 3# descaling bath inner salt
Acid concentration is followed successively by under conditions of 40g/L~60g/L, 80g/L~100g/L, 110g/L~140g/L, 1#, 2#, 3# descaling bath
Interior acid liquor temperature is set gradually as 70 DEG C~75 DEG C, 70 DEG C~75 DEG C, 65 DEG C~75 DEG C, and the addition of corrosion inhibiter is acid in acid solution
0.4 ‰~the 1 ‰ of liquid product.
A kind of 2. inexpensive hot-strip acid washing method according to claim 1, it is characterised in that 1#, 2#, 3# acid
Acid liquor temperature respectively is 75 DEG C, 75 DEG C, 73 DEG C in washing trough, and the addition of corrosion inhibiter is acid solution volume in the acid solution
1‰。
A kind of 3. inexpensive hot-strip acid washing method according to claim 1, it is characterised in that 1#, 2#, 3# acid
Acid liquor temperature respectively is 75 DEG C, 75 DEG C, 75 DEG C in washing trough, and the addition of corrosion inhibiter is acid solution volume in the acid solution
0.7‰。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640358.4A CN107385454A (en) | 2017-07-31 | 2017-07-31 | A kind of inexpensive hot-strip acid washing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710640358.4A CN107385454A (en) | 2017-07-31 | 2017-07-31 | A kind of inexpensive hot-strip acid washing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107385454A true CN107385454A (en) | 2017-11-24 |
Family
ID=60341494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710640358.4A Pending CN107385454A (en) | 2017-07-31 | 2017-07-31 | A kind of inexpensive hot-strip acid washing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107385454A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034957A (en) * | 2017-12-27 | 2018-05-15 | 日照宝华新材料有限公司 | High-carbon steel welds acid washing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010064358A (en) * | 1999-12-29 | 2001-07-09 | 이구택 | A method for controlling inhibitor concentration by free concentration of hydrochloric acid in pickling tank |
| BE1015893A3 (en) * | 2004-02-06 | 2005-11-08 | Ct Rech Metallurgiques Asbl | Metal`s e.g. steel, acid pickling detection and control method, comprises measuring molecular hydrogen content in gaseous state released in atmosphere near metal, and taking correction actions when content exceeds overpickling threshold |
| CN102277586A (en) * | 2011-08-15 | 2011-12-14 | 贵州钢绳股份有限公司 | Process method for cleaning high-carbon steel wire with hydrochloric acid |
| CN104694942A (en) * | 2015-03-31 | 2015-06-10 | 北京首钢股份有限公司 | Hot-rolled pickled plate producing method and hot-rolled pickled plate pickling system |
| CN106521523A (en) * | 2016-11-11 | 2017-03-22 | 攀钢集团攀枝花钢钒有限公司 | Pickling system and method for hot-rolled strip steel |
-
2017
- 2017-07-31 CN CN201710640358.4A patent/CN107385454A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010064358A (en) * | 1999-12-29 | 2001-07-09 | 이구택 | A method for controlling inhibitor concentration by free concentration of hydrochloric acid in pickling tank |
| BE1015893A3 (en) * | 2004-02-06 | 2005-11-08 | Ct Rech Metallurgiques Asbl | Metal`s e.g. steel, acid pickling detection and control method, comprises measuring molecular hydrogen content in gaseous state released in atmosphere near metal, and taking correction actions when content exceeds overpickling threshold |
| CN102277586A (en) * | 2011-08-15 | 2011-12-14 | 贵州钢绳股份有限公司 | Process method for cleaning high-carbon steel wire with hydrochloric acid |
| CN104694942A (en) * | 2015-03-31 | 2015-06-10 | 北京首钢股份有限公司 | Hot-rolled pickled plate producing method and hot-rolled pickled plate pickling system |
| CN106521523A (en) * | 2016-11-11 | 2017-03-22 | 攀钢集团攀枝花钢钒有限公司 | Pickling system and method for hot-rolled strip steel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108034957A (en) * | 2017-12-27 | 2018-05-15 | 日照宝华新材料有限公司 | High-carbon steel welds acid washing method |
| CN108034957B (en) * | 2017-12-27 | 2020-02-18 | 日照宝华新材料有限公司 | High-carbon steel welding and pickling method |
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| PB01 | Publication | ||
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Application publication date: 20171124 |