CN116713904A - Technology for preprocessing steel plate by adopting special ice medium - Google Patents
Technology for preprocessing steel plate by adopting special ice medium Download PDFInfo
- Publication number
- CN116713904A CN116713904A CN202310683744.7A CN202310683744A CN116713904A CN 116713904 A CN116713904 A CN 116713904A CN 202310683744 A CN202310683744 A CN 202310683744A CN 116713904 A CN116713904 A CN 116713904A
- Authority
- CN
- China
- Prior art keywords
- special
- ice
- steel plate
- water
- shot blasting
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000007781 pre-processing Methods 0.000 title claims abstract description 8
- 238000005516 engineering process Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000005422 blasting Methods 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims abstract description 25
- 239000008188 pellet Substances 0.000 claims abstract description 18
- 239000003973 paint Substances 0.000 claims abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 4
- 230000008014 freezing Effects 0.000 claims abstract description 4
- 238000007710 freezing Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims description 6
- 238000010422 painting Methods 0.000 claims description 5
- 230000005674 electromagnetic induction Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000003746 surface roughness Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention provides a process for pretreating steel plate by special ice medium, which comprises (1) freezing special water in water tank into ice blocks by ice maker, wherein the special water is electrolyzed alkaline ion water with pH of 10-13 and conductivity of 100-2.16X10 4 us/cm, the content of water chloride is less than or equal to 6.5mg/L; crushing ice cubes into special ice pellets with the diameter of 0.4-1.2 mm by adopting an ice crusher, taking the special ice pellets as a shot blasting medium of a shot blasting machine, and performing shot blasting operation on the steel plate; (2) carrying out primary drying treatment on the surface of the steel plate; (3) paint spraying operation; (4) And (5) drying for the second time, and carrying out drying treatment for the second time on the steel plate after finishing the primer spraying, so as to finish pretreatment. The invention provides a worker for preprocessing a steel plate by adopting a special ice mediumAccording to the process, the ice medium is used as the shot blasting medium to throw the shots on the steel plate, so that the environmental pollution is radically eliminated, and the blowing equipment is not required to be used for blowing.
Description
Technical Field
The invention relates to the technical field of ship manufacturing, in particular to a steel plate pretreatment process for ships, and especially relates to a process for pretreatment of a special ice medium information steel plate.
Background
Before the steel plate for preparing the ship is painted, the steel plate needs to be subjected to shot blasting treatment, so that the surface of the steel plate has certain roughness, the primer is convenient to attach, and the process is a pretreatment process of the steel plate. The existing pretreatment process adopts the mode that a shot blasting machine is adopted to perform shot blasting operation on a steel plate, a medium of the shot blasting machine adopts steel shots, purging operation is required to be performed after the shot blasting operation, dust is removed, then a primer spraying process is performed, and finally, the pretreatment process is completed through drying. However, the existing pretreatment process has the following problems:
the steel shots are continuously consumed in the shot blasting process, so that the cost is high;
the environmental pollution is too great, and although a dust removing device is adopted in the purging process, a large amount of ash is generated, so that the problem of the environmental pollution cannot be fundamentally solved.
And the adoption of the existing pretreatment process cannot bring better adhesion effect of the primer.
Disclosure of Invention
According to the technical problems, a process for preprocessing the steel plate by adopting a special ice medium is provided. The invention mainly uses the ice pellets prepared by special water as the shot blasting medium of the shot blasting machine to throw the pellets on the surface of the steel plate, thereby fundamentally solving the problem of environmental pollution and omitting the purging process.
The invention adopts the following technical means:
the process for preprocessing the steel plate by adopting a special ice medium comprises the following steps:
(1) Performing shot blasting operation on the steel plate by adopting special ice shots as shot blasting media of a shot blasting machine; the special ice pellets are formed by freezing special water, the pH of the special water is 10-13, and the conductivity is 100-2.16X10 4 us/cm, the content of water chloride is less than or equal to 6.5mg/L;
(2) Performing primary drying treatment on the surface of the steel plate;
(3) Painting, namely painting the surface of the steel plate;
(4) And (5) drying for the second time, and carrying out drying treatment for the second time on the steel plate to finish pretreatment.
Preferably, the diameter of the special ice pellets is 0.4-1.2 mm.
Preferably, in the step (1), the special water is frozen into ice cubes by adopting an ice maker; crushing the ice cubes into the special ice pellets by adopting an ice crusher,
preferably, in the process, a recovery tank is arranged at the bottom of the steel plate, and the recovery tank is used for recovering the special ice pellets and the special water formed after the special ice pellets are melted.
Preferably, in the steps (2) and (4), the electromagnetic induction type heating device is adopted to dry the steel plate for the first time and the second time.
Preferably, in the step (2), the drying is stopped until there is no water trace on the surface of the steel plate during the first drying treatment.
Preferably, in the step (4), the drying is stopped from the second drying treatment to the curing of the paint.
Preferably, in the step (1), when the surface roughness of the steel plate reaches to sa2.5, the shot blasting operation is stopped.
Compared with the prior art, the invention has the following advantages:
1. according to the process for preprocessing the steel plate by adopting the special ice medium, the ice medium is adopted as the shot blasting medium to throw the shot of the steel plate, so that the environment pollution is radically eliminated, and the blowing equipment is not required to be adopted for blowing.
2. The special water is electrolytic alkaline ion water and can be directly prepared by a diaphragm method. The steel plate subjected to special water treatment can form a layer of compact water film to protect the surface of the steel plate after being dried, so that the corrosion speed of the surface of the steel plate is reduced, better rust prevention and moisture prevention effects are obtained, and better process conditions are provided for subsequent coating. The steel plate treated by the special water can ensure that rust is not returned for 12 hours after being dried (even under the air humid environment). The special water-treated steel plate has the advantages of good paint binding force and meets the standard effect in industry after being coated. The special water can be recycled after recovery filtration and secondary treatment, so that the consumable cost of enterprises is reduced; and the water-based paint does not contain any chemical reagent, can be directly discharged, and has no secondary pollution to the nature.
For the reasons, the method can be widely popularized in the fields of steel plate pretreatment and the like.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a process for preprocessing a steel plate by adopting a special ice medium, which comprises the following steps:
(1) Freezing special water in the water tank into ice cubes by adopting an ice maker, wherein the special water is electrolyzed alkaline ion water, the pH value is 10-13, and the conductivity is 100-2.16X10 4 us/cm, the content of water chloride is less than or equal to 6.5mg/L; the ice blocks are crushed into special ice pellets with the diameter of 0.4-1.2 mm by adopting an ice crusher, the special ice pellets are used as a shot blasting medium of a shot blasting machine, the shot blasting operation is carried out on the steel plate, and when the surface roughness of the steel plate reaches Sa2.5, the shot blasting operation is stopped. And a recovery tank is arranged at the bottom of the steel plate and is used for recovering the special ice pellets and the special water formed after the special ice pellets are melted. The ice crusher adopts the model IceStorm90, the power is 55kw, the planned ice crushing amount per hour is 40-50 tons, and the ice crushing amount per hour is supplied to the shot blasting machine for use.
The shot blasting machine adopts a shot blasting machine with the model of HRPD-4500, and the power is 55Kw.
(2) Carrying out primary drying treatment on the surface of the steel plate by adopting an electromagnetic induction type heating device until no water mark exists on the surface of the steel plate, and stopping drying;
(3) Painting, namely spraying primer on the surface of the steel plate;
(4) And (3) drying for the second time, namely, after finishing the spraying of the primer, carrying out drying treatment for the second time on the steel plate, and drying until the paint is solidified, stopping drying, and finishing pretreatment.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (8)
1. The process for preprocessing the steel plate by adopting the special ice medium is characterized by comprising the following steps of:
(1) Performing shot blasting operation on the steel plate by adopting special ice shots as shot blasting media of a shot blasting machine; the special ice pellets are formed by freezing special water, the pH of the special water is 10-13, and the conductivity is 100-2.16X10 4 us/cm, the content of water chloride is less than or equal to 6.5mg/L;
(2) Performing primary drying treatment on the surface of the steel plate;
(3) Painting, namely painting the surface of the steel plate;
(4) And (5) drying for the second time, and carrying out drying treatment for the second time on the steel plate to finish pretreatment.
2. The process for pretreating steel sheets by using special ice media according to claim 1, wherein the special ice pellets have a diameter of 0.4-1.2 mm.
3. The process for pretreating steel sheets with a special ice medium according to claim 1 or 2, wherein in the step (1), the special water is frozen into ice cubes with an ice maker; and crushing the ice cubes into the special ice pellets by adopting an ice crusher.
4. The process for pretreating a steel sheet with a special ice medium according to claim 1, wherein a recovery tank is provided at the bottom of the steel sheet, and the recovery tank is used for recovering the special ice pellets and the special water formed after the special ice pellets are melted.
5. The process for pretreating a steel sheet with a special ice medium according to claim 1, wherein the first and second drying of the steel sheet is performed by an electromagnetic induction type heating device in the steps (2) and (4).
6. The process for pretreating a steel sheet by using a special ice medium according to claim 1, wherein in the step (2), the first drying treatment is performed until there is no water mark on the surface of the steel sheet to stop the drying.
7. The process for pretreating a steel sheet with a special ice medium according to claim 1, wherein in the step (4), the drying is stopped from the second drying treatment to the curing of the paint.
8. The process for pretreating a steel sheet with a special ice medium according to claim 1, wherein in the step (1), the shot blasting operation is stopped when the surface roughness of the steel sheet reaches to sa2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310683744.7A CN116713904A (en) | 2023-06-09 | 2023-06-09 | Technology for preprocessing steel plate by adopting special ice medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310683744.7A CN116713904A (en) | 2023-06-09 | 2023-06-09 | Technology for preprocessing steel plate by adopting special ice medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116713904A true CN116713904A (en) | 2023-09-08 |
Family
ID=87871007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310683744.7A Pending CN116713904A (en) | 2023-06-09 | 2023-06-09 | Technology for preprocessing steel plate by adopting special ice medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116713904A (en) |
-
2023
- 2023-06-09 CN CN202310683744.7A patent/CN116713904A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |