CN113897571A - Process method for enhancing hot galvanizing adhesive force - Google Patents
Process method for enhancing hot galvanizing adhesive force Download PDFInfo
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- CN113897571A CN113897571A CN202111151822.6A CN202111151822A CN113897571A CN 113897571 A CN113897571 A CN 113897571A CN 202111151822 A CN202111151822 A CN 202111151822A CN 113897571 A CN113897571 A CN 113897571A
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- workpiece
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- galvanized
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
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- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Coating With Molten Metal (AREA)
Abstract
The invention discloses a process method for enhancing hot galvanizing adhesive force, which is characterized by comprising the following process steps of material pretreatment, washing operation, pickling operation, ultrasonic washing, drying operation, cooling operation, secondary ultrasonic washing, secondary drying operation, phosphating operation, secondary washing operation, hot galvanizing operation, secondary cooling operation and passivation operation. According to the process method for enhancing the hot galvanizing adhesive force, provided by the invention, in the traditional hot galvanizing process, the ultrasonic cleaning operation is added, so that impurities on the surface of a galvanized workpiece can be effectively cleaned, the adhesive force of the galvanizing on the surface of the whole workpiece is ensured, and the hot galvanizing adhesive force is effectively enhanced.
Description
Technical Field
The invention relates to the field of hot galvanizing process, in particular to a process method for enhancing hot galvanizing adhesive force.
Background
Galvanization refers to a surface treatment technology for plating a layer of zinc on the surface of metal, alloy or other materials to play the roles of beauty, rust prevention and the like. The main method is hot galvanizing, and zinc is easily dissolved in acid and alkali, so that the zinc is called amphoteric metal. The zinc hardly changes in the dry air. In humid air, a dense film of basic zinc carbonate is formed on the zinc surface. In the atmosphere containing sulfur dioxide, hydrogen sulfide and oceanic atmosphere, the corrosion resistance of zinc is poor, and particularly in the atmosphere containing high-temperature high-humidity organic acid, a zinc coating is extremely easy to corrode. The standard electrode potential of zinc is-0.76V, and for steel matrix, the zinc coating belongs to an anodic coating, which is mainly used for preventing corrosion of steel, and the relation between the quality of protective performance and coating thickness is very large. After the zinc coating is passivated, dyed or coated with a light-protecting agent, the protective property and the decorative property of the zinc coating can be obviously improved.
The traditional hot galvanizing process often causes the phenomenon that a zinc coating layer is peeled off.
Based on the technical scheme, the invention designs a process method for enhancing the adhesion of hot galvanizing so as to solve the problems.
Disclosure of Invention
The invention aims to provide a process method for enhancing hot galvanizing adhesive force, which is provided by the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a process method for enhancing hot galvanizing adhesive force is characterized by comprising the following process steps:
material pretreatment: carrying out surface treatment on a galvanized workpiece to be treated;
and (3) water washing operation: soaking and washing a galvanized workpiece to be treated by adopting soaking type water;
acid washing operation: placing a galvanized workpiece to be treated in an acid solution for acid cleaning;
ultrasonic water washing: placing a galvanized workpiece to be treated in an ultrasonic cleaning pool for ultrasonic cleaning;
and (3) drying operation: placing a galvanized workpiece to be treated in a drying kang for drying operation;
and (3) cooling operation: placing a galvanized workpiece to be treated in a cooling tank for cooling operation;
secondary ultrasonic water washing: putting the galvanized workpiece to be treated in the ultrasonic cleaning pool again for secondary water washing;
and (3) secondary drying operation: putting the galvanized workpiece to be treated into the drying kang again for secondary drying operation;
and (3) phosphorization operation: placing a galvanized workpiece to be treated in a phosphating tank for phosphating operation;
and (3) secondary water washing operation: placing the galvanized workpiece subjected to phosphating operation in a rinsing bath for secondary rinsing operation;
hot galvanizing operation: placing a galvanized workpiece to be treated in a galvanizing bath for galvanizing;
secondary cooling operation: placing a galvanized workpiece to be treated in a cooling pool for cooling operation;
and (3) passivating: and spraying passivation solution on the hot galvanized workpiece.
As a further aspect of the present invention, the material pretreatment is specifically operated to pretreat the outer surface of the workpiece to be galvanized to remove the oxide layer and its adhered matter on the surface, and then remove the grease-like substances on the surface of the workpiece.
As a further scheme of the invention, the water washing operation and the secondary water washing operation are both washed by soaking type flowing water.
As a further scheme of the invention, the pickling operation is to place the workpiece at the room temperature of 20-25 ℃, and then place the workpiece in 15-20% hydrochloric acid solution for pickling, wherein the soaking time is set to be 10-15 minutes.
As a further scheme of the invention, the water washing time of the ultrasonic water washing and the secondary ultrasonic water washing operation is set to be 10-25 minutes, and the frequency of the ultrasonic instrument is set to be 200-400 KHZ.
As a further aspect of the present invention, softened water is used inside the cooling tank in the cooling operation and the temperature is set to 55 ℃.
As a further aspect of the invention, the interior of the phosphating tank during the phosphating operation is provided with a phosphate solution with a concentration of 21-32 grams of phosphate ions per liter.
As a further scheme of the invention, in the hot galvanizing operation, zinc liquid with the zinc content of more than 98.5 percent is contained in a hot galvanizing pool, the temperature of the zinc liquid is 440-450 ℃, and a workpiece to be galvanized is placed in the hot galvanizing pool, and the zinc dipping time is 3-8 minutes.
As a further aspect of the present invention, the passivation operation is to prevent the hot-dip galvanized workpiece from spraying the passivation solution on the rail, form a layer of passivation solution on the surface of the workpiece, and blow off the redundant passivation solution on the hot-dip galvanized workpiece by using a steam knife at a distance of one meter from the spraying position.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, by adding ultrasonic cleaning operation in the traditional hot galvanizing process, impurities on the surface of the galvanized workpiece can be effectively cleaned, the adhesion force of galvanizing on the surface of the whole workpiece is ensured, and the adhesion force of hot galvanizing is effectively enhanced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a flow chart of a process for enhancing adhesion of hot dip galvanized steel according to the invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in FIG. 1, the invention provides a process for enhancing hot galvanizing adhesion, which is characterized by comprising the following steps:
material pretreatment: carrying out surface treatment on a galvanized workpiece to be treated;
and (3) water washing operation: soaking and washing a galvanized workpiece to be treated by adopting soaking type water;
acid washing operation: placing a galvanized workpiece to be treated in an acid solution for acid cleaning;
ultrasonic water washing: placing a galvanized workpiece to be treated in an ultrasonic cleaning pool for ultrasonic cleaning;
and (3) drying operation: placing a galvanized workpiece to be treated in a drying kang for drying operation;
and (3) cooling operation: placing a galvanized workpiece to be treated in a cooling tank for cooling operation;
secondary ultrasonic water washing: putting the galvanized workpiece to be treated in the ultrasonic cleaning pool again for secondary water washing;
and (3) secondary drying operation: putting the galvanized workpiece to be treated into the drying kang again for secondary drying operation;
and (3) phosphorization operation: placing a galvanized workpiece to be treated in a phosphating tank for phosphating operation;
and (3) secondary water washing operation: placing the galvanized workpiece subjected to phosphating operation in a rinsing bath for secondary rinsing operation;
hot galvanizing operation: placing a galvanized workpiece to be treated in a galvanizing bath for galvanizing;
secondary cooling operation: placing a galvanized workpiece to be treated in a cooling pool for cooling operation;
and (3) passivating: and spraying passivation solution on the hot galvanized workpiece.
Through the scheme of the invention, the material pretreatment is specifically operated to pretreat the outer surface of the workpiece to be galvanized, remove an oxide layer and adhesive substances thereof on the surface and then remove grease substances on the surface of the workpiece.
According to the scheme of the invention, the washing operation and the secondary washing operation are both washed by soaking type flowing water.
Through the scheme of the invention, the pickling operation is to place the workpiece at the room temperature of 20-25 ℃, and then place the workpiece in 15-20% hydrochloric acid solution for pickling, wherein the soaking time is set to be 10-15 minutes.
Through the scheme of the invention, the washing time of the ultrasonic washing and the secondary ultrasonic washing operation is set to be 10-25 minutes, and the frequency of the ultrasonic instrument is set to be 200-400 KHZ.
By the scheme of the invention, softened water is adopted in the cooling pool in the cooling operation, and the temperature is set to be 55 ℃.
Through the scheme of the invention, phosphate solution with the concentration of 21-32 g phosphate ions/L is arranged in the phosphating pool in the phosphating operation.
By adopting the scheme, the hot galvanizing pool is filled with the zinc liquid with the zinc content of more than 98.5 percent in the hot galvanizing operation, the temperature of the zinc liquid is 440-450 ℃, and the workpiece to be galvanized is placed into the hot galvanizing pool for 3-8 minutes.
According to the scheme of the invention, the passivation operation is to prevent the hot-dip galvanized workpiece from being sprayed with the passivation solution on the rail, form a layer of passivation solution on the surface of the workpiece, and blow off the redundant passivation solution on the hot-dip galvanized workpiece by using the steam knife at a distance of one meter from the spraying position.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. A process method for enhancing hot galvanizing adhesive force is characterized by comprising the following process steps:
material pretreatment: carrying out surface treatment on a galvanized workpiece to be treated;
and (3) water washing operation: soaking and washing a galvanized workpiece to be treated by adopting soaking type water;
acid washing operation: placing a galvanized workpiece to be treated in an acid solution for acid cleaning;
ultrasonic water washing: placing a galvanized workpiece to be treated in an ultrasonic cleaning pool for ultrasonic cleaning;
and (3) drying operation: placing a galvanized workpiece to be treated in a drying kang for drying operation;
and (3) cooling operation: placing a galvanized workpiece to be treated in a cooling tank for cooling operation;
secondary ultrasonic water washing: putting the galvanized workpiece to be treated in the ultrasonic cleaning pool again for secondary water washing;
and (3) secondary drying operation: putting the galvanized workpiece to be treated into the drying kang again for secondary drying operation;
and (3) phosphorization operation: placing a galvanized workpiece to be treated in a phosphating tank for phosphating operation;
and (3) secondary water washing operation: placing the galvanized workpiece subjected to phosphating operation in a rinsing bath for secondary rinsing operation;
hot galvanizing operation: placing a galvanized workpiece to be treated in a galvanizing bath for galvanizing;
secondary cooling operation: placing a galvanized workpiece to be treated in a cooling pool for cooling operation;
and (3) passivating: and spraying passivation solution on the hot galvanized workpiece.
2. The process method for enhancing the adhesion of hot dip galvanizing according to claim 1, wherein the material pretreatment is specifically operated to pretreat the outer surface of the workpiece to be galvanized, remove an oxide layer and its adhered substances on the surface, and then remove grease substances on the surface of the workpiece.
3. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein the water washing operation and the secondary water washing operation are both washed by immersion flowing water.
4. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein the pickling operation is to place the workpiece at a room temperature of 20-25 ℃ and then in a 15-20% hydrochloric acid solution for pickling, and the soaking time is set to 10-15 minutes.
5. The process method for enhancing adhesion of hot dip galvanizing as claimed in claim 1, wherein the washing time of the ultrasonic water washing and the secondary ultrasonic water washing is set to 10-25 minutes, and the frequency of the ultrasonic instrument is set to 200-400 KHZ.
6. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein softened water is adopted in the cooling pool in the cooling operation and the temperature is set to be 55 ℃.
7. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein phosphate solution with the concentration of 21-32 g phosphate ions/L is arranged in the phosphating pool in the phosphating operation.
8. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein the hot dip galvanizing bath contains zinc liquid with zinc content of more than 98.5% in the hot dip galvanizing operation, the temperature of the zinc liquid is 440-450 ℃, the workpiece to be galvanized is placed into the hot dip galvanizing bath, and the galvanizing time is 3-8 minutes.
9. The process method for enhancing the adhesion of hot dip galvanizing as claimed in claim 1, wherein the passivation operation is to prevent the hot dip galvanizing workpiece from being sprayed with the passivation solution on the rail, form a layer of passivation solution on the surface of the workpiece, and blow off the redundant passivation solution on the hot dip galvanizing workpiece by using a steam knife at a distance of one meter from the spraying position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111151822.6A CN113897571A (en) | 2021-09-29 | 2021-09-29 | Process method for enhancing hot galvanizing adhesive force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111151822.6A CN113897571A (en) | 2021-09-29 | 2021-09-29 | Process method for enhancing hot galvanizing adhesive force |
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| CN113897571A true CN113897571A (en) | 2022-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115627468A (en) * | 2022-10-14 | 2023-01-20 | 广东冀安筛网有限公司 | Preparation method of stainless steel wire mesh |
Citations (7)
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|---|---|---|---|---|
| US3816188A (en) * | 1972-12-18 | 1974-06-11 | Du Pont | Low-fuming galvanizing fluxes |
| JP2005290552A (en) * | 2004-03-08 | 2005-10-20 | Nisshin Steel Co Ltd | Chemical-conversion-coated steel sheet superior in corrosion resistance, and adhesiveness and adhesivity to paint film |
| CN101702333A (en) * | 2009-11-05 | 2010-05-05 | 周宏伟 | Compound copper conductor with decoration and antiseptic effect and manufacturing method thereof |
| CN105603349A (en) * | 2016-01-06 | 2016-05-25 | 云南东电线路器材有限公司 | Hot galvanizing process |
| CN108070810A (en) * | 2017-11-30 | 2018-05-25 | 重庆徐丁科技有限公司 | A kind of motorcycle accessories surface zincincation |
| CN109338765A (en) * | 2018-09-10 | 2019-02-15 | 泰州华泽金属工业有限公司 | A kind of wirerope manufacture craft with high intensity with Corrosion Protection |
| CN110252630A (en) * | 2019-07-16 | 2019-09-20 | 山东圣士达环保科技有限公司 | A thin-plate hot-dip galvanized resin powder coating production line and its production process |
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2021
- 2021-09-29 CN CN202111151822.6A patent/CN113897571A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| US3816188A (en) * | 1972-12-18 | 1974-06-11 | Du Pont | Low-fuming galvanizing fluxes |
| JP2005290552A (en) * | 2004-03-08 | 2005-10-20 | Nisshin Steel Co Ltd | Chemical-conversion-coated steel sheet superior in corrosion resistance, and adhesiveness and adhesivity to paint film |
| CN101702333A (en) * | 2009-11-05 | 2010-05-05 | 周宏伟 | Compound copper conductor with decoration and antiseptic effect and manufacturing method thereof |
| CN105603349A (en) * | 2016-01-06 | 2016-05-25 | 云南东电线路器材有限公司 | Hot galvanizing process |
| CN108070810A (en) * | 2017-11-30 | 2018-05-25 | 重庆徐丁科技有限公司 | A kind of motorcycle accessories surface zincincation |
| CN109338765A (en) * | 2018-09-10 | 2019-02-15 | 泰州华泽金属工业有限公司 | A kind of wirerope manufacture craft with high intensity with Corrosion Protection |
| CN110252630A (en) * | 2019-07-16 | 2019-09-20 | 山东圣士达环保科技有限公司 | A thin-plate hot-dip galvanized resin powder coating production line and its production process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115627468A (en) * | 2022-10-14 | 2023-01-20 | 广东冀安筛网有限公司 | Preparation method of stainless steel wire mesh |
| CN115627468B (en) * | 2022-10-14 | 2024-07-23 | 广东冀安筛网有限公司 | Preparation method of stainless steel wire mesh |
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