CN110863229A - Novel metal material acid-free electrolytic phosphating process - Google Patents
Novel metal material acid-free electrolytic phosphating process Download PDFInfo
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- CN110863229A CN110863229A CN201911251603.8A CN201911251603A CN110863229A CN 110863229 A CN110863229 A CN 110863229A CN 201911251603 A CN201911251603 A CN 201911251603A CN 110863229 A CN110863229 A CN 110863229A
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- electrolytic phosphating
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/36—Phosphatising
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- Cleaning By Liquid Or Steam (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
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Abstract
The invention discloses a novel metal material acid-free electrolytic phosphating process, wherein the metal material is a stainless steel wire or a carbon steel wire, and the process comprises the following steps: paying off a wire, bending, shelling and straightening, derusting by a sand skin machine, ultrasonic cleaning, electrolytic phosphating, online saponification, drying and drawing and taking up; the invention adopts the combination of bending, husking and straightening, derusting by a sand skin machine and ultrasonic cleaning to clean the steel wire, replaces the acid cleaning process in the prior art, and can completely prevent the powder on the surface of the material from being brought into the electrolytic phosphating process; the water-based cleaning agent for ultrasonic cleaning does not need to be replaced, can be recycled after filtration, and residues generated in the process can be recycled after recovery treatment.
Description
Technical Field
The invention relates to the technical field of metal material surface treatment, in particular to a novel metal material acid-free electrolytic phosphating process.
Background
Phosphating is the most widely used surface coating for the metal product industry and is a phosphate protective film formed by the chemical reaction of a metal and dilute phosphoric acid or acidic phosphate. The film is firmly combined with a metal matrix, is an effective carrier of a lubricant required by the continuous deep processing of a workpiece, and is an anticorrosive protective film.
The metal product phosphating is a process of cleaning the surface of a steel wire rod and then carrying out surface treatment by using phosphating solution to form a required phosphating film on the surface of the steel wire rod, namely a steel wire rod phosphating technology. The phosphatized steel wire has uniform poker performance, good toughness and cold processing performance after being drawn.
The existing phosphorization process flow comprises pickling, washing, soaking type phosphorization, washing and saponification, and a large amount of waste liquid containing acid and phosphorus, phosphorization slag and lead dust and other dangerous wastes are generated in the pickling process.
Disclosure of Invention
The invention aims to provide a novel metal material acid-free electrolytic phosphating process, which solves the problems in the background technology.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the novel acid-free electrolytic phosphating process for the metal material, which is a stainless steel wire or a carbon steel wire, comprises the following steps of:
(1) wire paying-off
After loading a loading frame with raw material steel wires, supplying the wires into equipment in a rotating mode;
(2) bend peeling and straightening
Bending the steel wire by using a bending device, wherein in the bending process, the iron rust on the surface of the wire can partially fall off, and then straightening the bent wire by using a straightening device;
(3) rust removal of sand machine
Further removing rust on the surface of the wire rod by using a sand skin machine;
(4) ultrasonic cleaning
Directly cleaning the surface of the wire rod subjected to rust removal by the sand skin machine by an ultrasonic cleaning machine;
(5) electrolytic phosphating
The wire rod after ultrasonic cleaning directly enters an electrolytic phosphating tank for electrolytic phosphating, wherein an electrolytic phosphating solution is configured in the electrolytic phosphating tank, the electrolytic phosphating temperature is 10-40 ℃, and the steel wire rod is completely soaked in the solution in the electrolytic phosphating process and has the depth of less than 2cm from the liquid level;
(6) on-line saponification
Directly feeding the steel wire rod into a saponification device for saponification after electrolytic phosphorization, and combining saponification liquid and the surface protective film formed in the step (4) into a more stable protective layer;
(7) drying by baking
Drying the steel wire by using high-pressure hot air;
(8) drawing take-up
And drawing and taking up wires by using an inverted wire drawing machine.
Further, the cleaning medium for ultrasonic cleaning in the step (4) is a water-based cleaning agent.
Further, the electrolytic phosphating solution in the step (5) is a mixed solution composed of zinc oxide, phosphoric acid, nitric acid, nickel nitrate, citric acid and water, and each liter of the electrolytic phosphating solution contains the following components: 75-115g of zinc oxide, 130-200g of phosphoric acid, 150g of nitric acid, 3.5-4g of nickel nitrate, 3.5-4g of citric acid and the balance of water.
Further, the main component of the saponification liquid in the step (6) is sodium stearate, and the sodium stearate which is generated by combining the sodium stearate with a phosphating film and has the functions of corrosion prevention and drawing lubrication is firmly adhered to the surface of the steel wire and is carried into a drawing machine along with the steel wire.
Further, the residues in the steps (2), (3) and (4) are subjected to recovery treatment.
The invention has the following beneficial effects:
(1) the invention adopts the combination of bending, husking and straightening, derusting by a sand skin machine and ultrasonic cleaning to clean the steel wire, replaces the acid cleaning process in the prior art, and can completely prevent the powder on the surface of the material from being brought into the electrolytic phosphating process; the water-based cleaning agent for ultrasonic cleaning does not need to be replaced, can be recycled after filtration, and residues generated in the process can be recycled after recovery treatment.
(2) Can carry out electrolytic phosphorization at lower temperature, has low energy consumption and high production efficiency, does not produce waste liquid, waste residue and waste gas in the whole process, and does not need cleaning.
(3) The invention only carries out electrolytic phosphorization on single wire metal, and the formed protective film has uniform film layer, fine and smooth film body, strong adhesive force, difficult shedding after cold forming and high protection on workpieces and moulds.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but 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.
The novel acid-free electrolytic phosphating process for the metal material, which is a stainless steel wire or a carbon steel wire, comprises the following steps of:
(1) wire paying-off
After loading a loading frame with raw material steel wires, supplying the wires into equipment in a rotating mode;
(2) bend peeling and straightening
Bending the steel wire by using a bending device, wherein in the bending process, the iron rust on the surface of the wire can partially fall off, and then straightening the bent wire by using a straightening device;
(3) rust removal of sand machine
Further removing rust on the surface of the wire rod by using a sand skin machine;
(4) ultrasonic cleaning
The wire rod after being derusted by the sand skin machine is directly cleaned on the surface of the wire rod by an ultrasonic cleaning machine, the cleaning medium for ultrasonic cleaning is a water-based cleaning agent, a small amount of ferroferric oxide fine particles are remained on the surface of the steel wire rod after being treated by the steps (2) and (3), and the ferroferric oxide fine particles can be thoroughly removed after being cleaned by ultrasonic;
(5) electrolytic phosphating
The wire rod after ultrasonic cleaning directly enters an electrolytic phosphating tank for electrolytic phosphating, electrolytic phosphating solution is configured in the electrolytic phosphating tank, the electrolytic phosphating solution is mixed solution consisting of zinc oxide, phosphoric acid, nitric acid, nickel nitrate, citric acid and water, and the content of each component in each liter of the electrolytic phosphating solution is as follows: 75-115g of zinc oxide, 130-200g of phosphoric acid, 150g of nitric acid, 3.5-4g of nickel nitrate, 3.5-4g of citric acid and the balance of water, wherein the electrolytic phosphating temperature is 10-40 ℃, the steel wire rod is completely soaked in the solution at a depth of less than 2cm from the liquid level in the electrolytic phosphating process, and no heating is needed in the electrolytic phosphating process, and no by-product is generated;
(6) on-line saponification
The steel wire rod is directly fed into a saponification device for saponification after electrolytic phosphating, saponification liquid and the surface protective film formed in the step (4) are combined into a more stable protective layer, the main component of the saponification liquid is sodium stearate, and zinc stearate which is generated by combining the sodium stearate with a phosphating film and has the functions of corrosion prevention and drawing lubrication is firmly adhered to the surface of the steel wire and is fed into a drawing machine along with the steel wire;
(7) drying by baking
Drying the steel wire by using high-pressure hot air;
(8) drawing take-up
And drawing and taking up wires by using an inverted wire drawing machine.
The method thoroughly removes the oxidation of the surface of the steel wire by bending, husking and straightening, derusting by a sand skin machine and ultrasonic cleaning, replaces the pickling process, and can completely prevent the powder on the surface of the material from being brought into the electrolytic phosphating process; the water-based cleaning agent for ultrasonic cleaning does not need to be replaced, can be recycled after being filtered, and residues generated in the process can be recycled after being recycled; and then the electrolyte is subjected to anion-cation exchange adsorption through on-line electrolytic phosphorization, so that a layer of fine and smooth lubricating carrier which is rich in extensibility and resistant to extrusion is generated on the surface of the steel wire. Because the electrolytic phosphating time is short, the temperature is low, no waste is discharged in the use process, and the requirements of environmental protection production are met.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The novel metal material acid-free electrolytic phosphating process is characterized in that the metal material is a stainless steel wire or a carbon steel wire, and comprises the following steps:
(1) wire paying-off
After loading a loading frame with raw material steel wires, supplying the wires into equipment in a rotating mode;
(2) bend peeling and straightening
Bending the steel wire by using a bending device, wherein in the bending process, the iron rust on the surface of the wire can partially fall off, and then straightening the bent wire by using a straightening device;
(3) rust removal of sand machine
Further removing rust on the surface of the wire rod by using a sand skin machine;
(4) ultrasonic cleaning
Directly cleaning the surface of the wire rod subjected to rust removal by the sand skin machine by an ultrasonic cleaning machine;
(5) electrolytic phosphating
The wire rod after ultrasonic cleaning directly enters an electrolytic phosphating tank for electrolytic phosphating, wherein an electrolytic phosphating solution is configured in the electrolytic phosphating tank, the electrolytic phosphating temperature is 10-40 ℃, and the steel wire rod is completely soaked in the solution in the electrolytic phosphating process and has the depth of less than 2cm from the liquid level;
(6) on-line saponification
Directly feeding the steel wire rod into a saponification device for saponification after electrolytic phosphorization, and combining saponification liquid and the surface protective film formed in the step (4) into a more stable protective layer;
(7) drying by baking
Drying the steel wire by using high-pressure hot air;
(8) drawing take-up
And drawing and taking up wires by using an inverted wire drawing machine.
2. The novel acid-free electrolytic phosphating process of a metal material according to claim 1, characterized in that: and (4) cleaning medium for ultrasonic cleaning in the step (4) is water-based cleaning agent.
3. The novel acid-free electrolytic phosphating process of a metal material according to claim 1, characterized in that: the electrolytic phosphating solution in the step (5) is a mixed solution consisting of zinc oxide, phosphoric acid, nitric acid, nickel nitrate, citric acid and water, and each liter of electrolytic phosphating solution contains the following components: 75-115g of zinc oxide, 130-200g of phosphoric acid, 150g of nitric acid, 3.5-4g of nickel nitrate, 3.5-4g of citric acid and the balance of water.
4. The novel acid-free electrolytic phosphating process of a metal material according to claim 1, characterized in that: the main component of the saponification liquid in the step (6) is sodium stearate, and zinc stearate which is generated by combining the sodium stearate with a phosphating film and has the functions of corrosion prevention and drawing lubrication is firmly adhered to the surface of the steel wire and is carried into a drawing machine along with the steel wire.
5. The novel acid-free electrolytic phosphating process of a metal material according to claim 1, characterized in that: and (3) recovering the residues in the steps (2), (3) and (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911251603.8A CN110863229A (en) | 2019-12-09 | 2019-12-09 | Novel metal material acid-free electrolytic phosphating process |
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| CN201911251603.8A CN110863229A (en) | 2019-12-09 | 2019-12-09 | Novel metal material acid-free electrolytic phosphating process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893276A (en) * | 2020-08-03 | 2020-11-06 | 宝钢金属有限公司 | Preparation method of environment-friendly heat-resistant high-temperature alloy steel wire |
| CN112064092A (en) * | 2020-09-15 | 2020-12-11 | 六安乐巴巴科技有限公司 | Method for phosphating surface of steel wire |
| CN113073371A (en) * | 2021-03-22 | 2021-07-06 | 领润(南京)绿色化学有限公司 | Clean anode plate friendly electrolytic phosphating solution and phosphating process thereof |
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| EP0987350B1 (en) * | 1998-08-06 | 2006-06-28 | voestalpine Austria Draht GmbH | Process and apparatus for applying a phosphate coating on workpieces |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893276A (en) * | 2020-08-03 | 2020-11-06 | 宝钢金属有限公司 | Preparation method of environment-friendly heat-resistant high-temperature alloy steel wire |
| CN112064092A (en) * | 2020-09-15 | 2020-12-11 | 六安乐巴巴科技有限公司 | Method for phosphating surface of steel wire |
| CN112064092B (en) * | 2020-09-15 | 2023-03-28 | 六安乐巴巴科技有限公司 | Method for phosphating surface of steel wire |
| CN113073371A (en) * | 2021-03-22 | 2021-07-06 | 领润(南京)绿色化学有限公司 | Clean anode plate friendly electrolytic phosphating solution and phosphating process thereof |
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Application publication date: 20200306 |