CN113564600A - Hot acid corrosion process for billet - Google Patents
Hot acid corrosion process for billet Download PDFInfo
- Publication number
- CN113564600A CN113564600A CN202110859187.0A CN202110859187A CN113564600A CN 113564600 A CN113564600 A CN 113564600A CN 202110859187 A CN202110859187 A CN 202110859187A CN 113564600 A CN113564600 A CN 113564600A
- Authority
- CN
- China
- Prior art keywords
- acid
- steel billet
- namely
- corrosion
- preheating
- 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
Links
- 239000002253 acid Substances 0.000 title claims abstract description 72
- 238000005260 corrosion Methods 0.000 title claims abstract description 23
- 230000007797 corrosion Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000001376 precipitating effect Effects 0.000 claims abstract description 6
- 230000003472 neutralizing effect Effects 0.000 claims abstract description 5
- 239000002699 waste material Substances 0.000 claims abstract description 5
- 238000005530 etching Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000005554 pickling Methods 0.000 description 9
- 230000008021 deposition Effects 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
- C23F1/28—Acidic compositions for etching iron group metals
-
- 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
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/46—Regeneration of etching compositions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
Abstract
The invention provides a hot acid corrosion process for a steel billet, which comprises the following process steps: preheating, namely heating the neo-acid to a working temperature T; corroding, namely putting the steel billet into the heated hot acid, and corroding the steel billet; cleaning, namely cleaning the steel billet subjected to hot acid corrosion; preheating, namely preheating again to reach the working temperature T when the temperature of hot acid after the steel billet is corroded is reduced; precipitating, namely precipitating the acid liquor and filtering impurities when the billet does not need to be corroded; neutralizing, namely neutralizing waste acid which cannot be reused after corrosion with fresh alkali; the steel billet corrosion device has the effects of filtering impurities and storing acid liquor, so that the utilization rate of the acid liquor is improved, the corrosion effect of the steel billet due to excessive impurities or temperature reduction is avoided, and the corrosion reliability of the steel billet is improved.
Description
Technical Field
The invention belongs to the field of steel manufacturing, and particularly relates to a hot acid corrosion process for a billet.
Background
At present, in quality inspection in the steel industry, macrostructure inspection of a steel billet is generally performed in a hot acid, cold acid or electric corrosion mode, wherein the acid etching effect is optimal in the hot acid mode. In the process of acid etching by a hot acid mode, the acid liquor is preheated, corroded, cleaned and neutralized, but after the steel billet is corroded by the acid liquor, impurities are brought into the acid liquor to influence the subsequent corrosion of the steel billet.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a hot acid etching process for steel billets, which can reduce impurities in the acid solution.
In order to achieve the above and other related objects, the present invention provides a hot acid etching process for steel billets, comprising the following process steps:
preheating, namely heating the neo-acid to a working temperature T;
corroding, namely putting the steel billet into the heated hot acid, and corroding the steel billet;
cleaning, namely cleaning the steel billet subjected to hot acid corrosion;
preheating, namely preheating again to reach the working temperature T when the temperature of hot acid after the steel billet is corroded is reduced;
precipitating, namely precipitating the acid liquor and filtering impurities when the billet does not need to be corroded;
and (4) neutralizing waste acid which cannot be reused after corrosion with fresh alkali.
Optionally, the preheating is performed by heating with graphite steam.
As described above, the hot acid etching process for steel billets of the present invention has the following beneficial effects:
the steel billet corrosion device has the effects of filtering impurities and storing acid liquor, so that the utilization rate of the acid liquor is improved, the corrosion effect of the steel billet due to excessive impurities or temperature reduction is avoided, and the corrosion reliability of the steel billet is improved.
Drawings
FIG. 1 is a process flow diagram of an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
As shown in FIG. 1, the invention provides a hot acid etching process for a steel billet, which comprises the following process steps:
s01, introducing the neo-acid into a neo-acid tank, so that the neo-acid can be stored and used conveniently;
s02, preheating, namely, installing a preheating acid tank to preheat, enabling fresh acid in the fresh acid tank to flow into the preheating acid tank, and heating acid liquor flowing into the preheating acid tank in the fresh acid tank to a working temperature T required by acid liquor corrosion;
s03, corroding, installing a pickling working tank, introducing hot acid heated by the preheating acid tank into the pickling working tank, placing the steel billet into the hot acid in the pickling working tank, and corroding the steel billet;
s04, cleaning, installing a washing tower, cleaning and drying the steel billet corroded in the pickling working tank, and performing subsequent imaging evaluation;
s05, preheating, when the temperature of hot acid after the steel billet is corroded is reduced, enabling acid liquor in the pickling working tank to flow into the preheating acid tank for heating, and when the temperature of hot acid reaches the working temperature T, enabling the acid liquor to flow into the pickling tank again for corroding the steel billet;
s06 deposition, installing a deposition tank, when the billet is not needed to be corroded, the acid liquor which can be used in the preheating acid tank and the pickling working tank is led into the deposition tank, impurities in the acid liquor are deposited, the impurity filtering effect is achieved, the acid liquor storage effect is achieved, the utilization rate of the acid liquor is improved, the corrosion effect of the billet due to excessive impurities or temperature reduction is avoided, and the billet corrosion reliability is improved. When the acid liquor in the settling tank needs to be used, the acid liquor in the settling tank can be introduced into the preheating acid tank or the pickling corrosion tank.
Specifically, this gunbarrel includes gunbarrel body and apron, and this apron detachable installs on the gunbarrel body, adopts this structure setting, is not only convenient for wash and handle the dust, can also keep sealed, simultaneously, when the acidizing fluid of row, can not take place the excessive phenomenon.
And S07, neutralizing, namely, installing a neutralization tank and a fresh alkali tank, wherein the fresh alkali tank is filled with alkali liquor, the waste acid which cannot be used in the pickling tank is subjected to acid mist treatment and then is introduced into the neutralization tank, and the alkali liquor in the fresh alkali tank is introduced into the neutralization tank to neutralize the waste acid.
In some embodiments, the preheating adopts a graphite steam heating mode, and the graphite steam heating mode has the advantages of fast temperature rise, reduced preheating time, improved working efficiency, low energy consumption, long service life, low maintenance cost and the like.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (2)
1. A hot acid corrosion process for a steel billet is characterized by comprising the following process steps:
preheating, namely heating the neo-acid to a working temperature T;
corroding, namely putting the steel billet into the heated hot acid, and corroding the steel billet;
cleaning, namely cleaning the steel billet subjected to hot acid corrosion;
preheating, namely preheating again to reach the working temperature T when the temperature of hot acid after the steel billet is corroded is reduced;
precipitating, namely precipitating the acid liquor and filtering impurities when the billet does not need to be corroded;
and (4) neutralizing waste acid which cannot be reused after corrosion with fresh alkali.
2. The hot acid etching process of steel billet according to claim 1, characterized by: the preheating adopts a graphite steam heating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110859187.0A CN113564600A (en) | 2021-07-28 | 2021-07-28 | Hot acid corrosion process for billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110859187.0A CN113564600A (en) | 2021-07-28 | 2021-07-28 | Hot acid corrosion process for billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113564600A true CN113564600A (en) | 2021-10-29 |
Family
ID=78168604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110859187.0A Pending CN113564600A (en) | 2021-07-28 | 2021-07-28 | Hot acid corrosion process for billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113564600A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978600A (en) * | 2017-03-23 | 2017-07-25 | 中原特钢股份有限公司 | A kind of semi-automatic acid washing method of macro coupon |
| CN108132175A (en) * | 2018-02-09 | 2018-06-08 | 上海琨聚电子科技有限公司 | A kind of steel bloom low-times thermal acid washes automatic test system |
| CN213624389U (en) * | 2020-09-27 | 2021-07-06 | 五矿营口中板有限责任公司 | Continuous casting billet thermal acid etching device with precipitation filtering function |
-
2021
- 2021-07-28 CN CN202110859187.0A patent/CN113564600A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106978600A (en) * | 2017-03-23 | 2017-07-25 | 中原特钢股份有限公司 | A kind of semi-automatic acid washing method of macro coupon |
| CN108132175A (en) * | 2018-02-09 | 2018-06-08 | 上海琨聚电子科技有限公司 | A kind of steel bloom low-times thermal acid washes automatic test system |
| CN213624389U (en) * | 2020-09-27 | 2021-07-06 | 五矿营口中板有限责任公司 | Continuous casting billet thermal acid etching device with precipitation filtering function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108149179B (en) | Hot galvanizing production process for fastener | |
| CN109136930A (en) | The alkaline etching solution of processing method and its use before aluminum alloy surface oxidation | |
| CN102995040A (en) | Method for heating acid washing solution | |
| CN202047137U (en) | Pickling device for copper and copper alloy pipe rod type wire rods | |
| CN102125914A (en) | Ultrasonic surface cleaning process for forged workpiece | |
| CN101003899B (en) | Deleading technique for surface of lead brass and copper alloy | |
| CN113564600A (en) | Hot acid corrosion process for billet | |
| CN110863229A (en) | Novel metal material acid-free electrolytic phosphating process | |
| CN207046880U (en) | Hydrochloric acid pickling waste liquor recovery and processing system | |
| CN104878399A (en) | Degreasing tank | |
| CN102962290A (en) | High-efficiency production process capable of improving surface accuracy of cold-drawn seamless steel tube | |
| CN102425778A (en) | Process of carrying out low-temperature chemical cleaning passivation on thermal power plant boiler by utilizing EDTA (Ethylene Diamine Tetraacetic Acid) | |
| CN104357862A (en) | Metal surface cleaning method | |
| CN104498870A (en) | Aluminum plating pretreatment process of multi-arc ion plating of threaded stainless steel part and application | |
| CN106757069A (en) | A kind of infusion process rust cleaning agent prescription and derusting method | |
| CN214470358U (en) | Automatic cleaning system for heat exchanger | |
| CN209974906U (en) | Pickling bath device | |
| CN211695658U (en) | Device for reducing energy consumption of drying equipment | |
| CN110129871A (en) | A kind for the treatment of process of non-chromium electrolytic polishing solution | |
| CN210138759U (en) | Pipeline cleaning spray head | |
| CN207891432U (en) | A kind of UTILIZATION OF VESIDUAL HEAT IN heats steel plate pre-treatment water installations indirectly | |
| CN111974632A (en) | Horizontal full-automatic microchannel coating production line | |
| CN112845279A (en) | Environment-friendly energy-saving novel metal cold forming processing method | |
| CN109097764A (en) | A kind of bolt treatment process | |
| CN105803470A (en) | Chemical cleaning method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211029 |