CN111826577A - Production process of stainless steel section with high corrosion performance - Google Patents
Production process of stainless steel section with high corrosion performance Download PDFInfo
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- CN111826577A CN111826577A CN201910312025.8A CN201910312025A CN111826577A CN 111826577 A CN111826577 A CN 111826577A CN 201910312025 A CN201910312025 A CN 201910312025A CN 111826577 A CN111826577 A CN 111826577A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
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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
- 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
- C23C22/48—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 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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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
- C23G1/08—Iron or steel
- C23G1/086—Iron or steel solutions containing HF
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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
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/56—Electroplating: Baths therefor from solutions of alloys
- C25D3/565—Electroplating: Baths therefor from solutions of alloys containing more than 50% by weight of zinc
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
The invention discloses a production process of a stainless steel section with high corrosion performance, which comprises the steps of selecting raw materials, sintering the raw materials in a high-temperature furnace to obtain a blank, putting the prepared blank, molten steel and molybdenum element additive into a smelting furnace for melting treatment, and introducing inert gas into the smelting furnace while melting; carrying out steel rolling operation on the treated raw material to obtain a blank; and repairing the defects on the blank. The production process of the stainless steel section with high corrosion performance comprises the steps of grinding a stainless steel blank before processing, effectively reducing the phenomena of uneven surface and the like, facilitating the uniform attachment process of galvanizing at the later stage, pickling the blank before electroplating, washing off impurities on the surface of the blank, passivating the blank, forming a layer of compact film on the surface of the blank, reducing the corrosion of the stainless steel inside the blank in use, forming three layers of oxide films through the conformal capsule after electroplating, and further improving the corrosion performance of the stainless steel section.
Description
Technical Field
The invention relates to the technical field of stainless steel processing, in particular to a production process of a stainless steel profile with high corrosion performance.
Background
The stainless steel is resistant to weak corrosive media such as air, steam and water or stainless steel. When the nitrogen element in the stainless steel is higher, the corrosion resistance of the stainless steel can be greatly improved, and meanwhile, the stainless steel is steel which resists the corrosion of weak corrosion media such as air, steam and water and chemical corrosion media such as acid, alkali and salt, and is also called as stainless acid-resistant steel. In practice, steel resistant to corrosion by weakly corrosive media is often referred to as stainless steel, while steel resistant to corrosion by chemical media is referred to as acid-resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to corrosion by chemical media, while the latter is generally non-corrosive. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. However, due to the limitation of the preparation process, the existing stainless steel has insufficient nitrogen content, so that the stainless steel has poor strength, tensile property and corrosion resistance. In order to further improve the corrosion resistance of stainless steel, galvanizing treatment is usually performed on the surface of the stainless steel in the process of processing the stainless steel, but in the existing hot galvanizing process, the adhesion force of a plating solution on a workpiece is poor, the thickness of a zinc layer is difficult to reach the standard, the uniformity is not high, the corrosion resistance degree of the surface of the zinc layer is different, and the process is troublesome.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a production process of a stainless steel section with high corrosion performance, on one hand, the stainless steel section is polished before being processed, the phenomena of uneven surface and the like can be effectively reduced, the uniform adhesion process of later galvanizing is facilitated, meanwhile, the blank is pickled before electroplating, impurities on the surface of the blank can be washed away, the blank is passivated, and a compact film is formed on the surface of the blank, so that the corrosion of the stainless steel in use can be reduced, and on the other hand, three layers of oxide films are formed by conformal coating after electroplating, so that the corrosion performance of the stainless steel section is further improved.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a production process of a stainless steel profile with high corrosion performance comprises the following steps:
s1: refining: selecting raw materials and sintering the raw materials in a high-temperature furnace to obtain a blank, putting the prepared blank, molten steel and molybdenum element additive into a smelting furnace for melting treatment, and introducing inert gas into the smelting furnace while melting;
s2: steel rolling: carrying out steel rolling operation on the raw material processed in the step (S1) to obtain a blank;
s3: grinding the blank, and repairing the defects on the blank;
s4: acid washing, wherein the volume fraction of the agent is HNO 35% -20% + HF 0.6% -1%, the temperature is 21-60 ℃, and the time is 5-8 min;
s5: passivating for 10-3 min at 49-71 ℃ with the medicament volume fraction being 320-50% of HNO;
s6: electroplating: placing the blank in electroplating solution for reaction for 10-15s, wherein the electroplating solution comprises the following components in percentage by mass: 0.006-0.007% of Al, 0.01-0.02% of Ni and the balance of zinc and inevitable impurities;
s7: coating the stainless steel obtained in the step (S6) at 90-95 ℃ for 10-15 min by using a coating agent, wherein the coating agent is composed of lime, oil and soap;
s8: and (S7) drying, namely, sending the stainless steel processed in the step (S7) into an oven for drying, wherein the drying temperature is controlled to be 100-110 ℃, and the drying time is 3-5 min.
Preferably, the reagent HNO3 in the step S4 can be ammonium citrate with the volume fraction of 6-15% for 8-15 min.
Preferably, in step S1, the raw material is one of pyrite, pentlandite, coke, silica, manganese dioxide, and chalcopyrite.
Preferably, the molybdenum additive is ferromolybdenum.
Preferably, the inert gas is nitrogen, and the content of nitrogen is 75%.
(III) advantageous effects
Detailed Description
The invention provides a technical scheme that: a production process of a stainless steel profile with high corrosion performance comprises the following steps:
s1: refining: selecting raw materials and sintering the raw materials in a high-temperature furnace to obtain a blank, putting the prepared blank, molten steel and molybdenum element additive into a smelting furnace for melting treatment, and introducing inert gas into the smelting furnace while melting;
s2: steel rolling: carrying out steel rolling operation on the raw material processed in the step (S1) to obtain a blank;
s3: grinding the blank, and repairing the defects on the blank;
s4: acid washing, wherein the volume fraction of the agent is HNO 35% -20% + HF 0.6% -1%, the temperature is 21-60 ℃, and the time is 5-8 min;
s5: passivating for 10-3 min at 49-71 ℃ with the medicament volume fraction being 320-50% of HNO;
s6: electroplating: placing the blank in electroplating solution for reaction for 10-15s, wherein the electroplating solution comprises the following components in percentage by mass: 0.006-0.007% of Al, 0.01-0.02% of Ni and the balance of zinc and inevitable impurities;
s7: coating the stainless steel obtained in the step (S6) at 90-95 ℃ for 10-15 min by using a coating agent, wherein the coating agent is composed of lime, oil and soap;
s8: and (S7) drying, namely, sending the stainless steel processed in the step (S7) into an oven for drying, wherein the drying temperature is controlled to be 100-110 ℃, and the drying time is 3-5 min.
The reagent HNO3 in the step S4 can be ammonium citrate with the volume fraction of 6-15% for 8-15 min.
In the step S1, the raw material is one of pyrite, pentlandite, coke, silica, manganese dioxide, and chalcopyrite.
The molybdenum element additive is ferromolybdenum.
The inert gas is nitrogen, and the content of the nitrogen is 75%.
In conclusion, in the production process of the stainless steel section with high corrosion performance, firstly, raw materials are selected and sintered in a high-temperature furnace to obtain a blank, meanwhile, the prepared blank, molten steel and molybdenum element additive are put into a smelting furnace for melting treatment, inert gas is introduced into the smelting furnace while melting, the treated raw materials are subjected to steel rolling operation to obtain a blank, then, the blank is ground to repair defects on the blank, then, the ground blank is subjected to acid washing with the time of 5-8 min, the temperature of 21-60 ℃, the volume fraction of HNO 35-20% and HF 0.6-1%, then, the treated blank is passivated, the passivation condition is 10-3 min, the temperature is 49-71 ℃, the volume fraction of HNO 320-50%, a layer of dense oxide film is formed on the surface of the passivated blank, can increase the corrosion performance of the stainless steel, then electroplates the passivated blank, forms a layer of coating on the blank again, finally, passes through the coating process, treating the coating agent at the temperature of 90-95 ℃ to form a third oxide film which is adsorbed on the outer surface of the blank, the production process of the stainless steel section with high corrosion performance has the advantages that on one hand, the stainless steel blank is polished before being processed, the phenomena of uneven surface and the like can be effectively reduced, the uniform adhesion process of later galvanizing is facilitated, and simultaneously, the blank is acid-washed before electroplating to remove impurities on the surface of the blank, and then the blank is passivated, a layer of compact film is formed on the surface of the stainless steel, so that the corrosion of the stainless steel in use can be reduced, and on the other hand, after electroplating, three layers of oxide films are formed through the coating film, thereby further increasing the corrosion performance of the electroplating solution.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The element defined by the sentence "comprising one.. said, does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element, the electrical elements presented therein are all electrically connected to an external master and 220V mains, and the master may be a conventionally known apparatus, such as a computer, which acts as a control.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A production process of a stainless steel profile with high corrosion performance comprises the following steps:
s1: refining: selecting raw materials and sintering the raw materials in a high-temperature furnace to obtain a blank, putting the prepared blank, molten steel and molybdenum element additive into a smelting furnace for melting treatment, and introducing inert gas into the smelting furnace while melting;
s2: steel rolling: carrying out steel rolling operation on the raw material processed in the step (S1) to obtain a blank;
s3: grinding the blank, and repairing the defects on the blank;
s4: acid washing, wherein the volume fraction of the agent is HNO 35% -20% + HF 0.6% -1%, the temperature is 21-60 ℃, and the time is 5-8 min;
s5: passivating for 10-3 min at 49-71 ℃ with the medicament volume fraction being 320-50% of HNO;
s6: electroplating: placing the blank in electroplating solution for reaction for 10-15s, wherein the electroplating solution comprises the following components in percentage by mass: 0.006-0.007% of Al, 0.01-0.02% of Ni and the balance of zinc and inevitable impurities;
s7: coating the stainless steel obtained in the step (S6) at 90-95 ℃ for 10-15 min by using a coating agent, wherein the coating agent is composed of lime, oil and soap;
s8: and (S7) drying, namely, sending the stainless steel processed in the step (S7) into an oven for drying, wherein the drying temperature is controlled to be 100-110 ℃, and the drying time is 3-5 min.
2. The process for producing a stainless steel profile with high corrosion resistance according to claim 1, wherein the process comprises the following steps: the reagent HNO3 in the step S4 can be ammonium citrate with the volume fraction of 6-15% for 8-15 min.
3. The process for producing a stainless steel profile with high corrosion resistance according to claim 1, wherein the process comprises the following steps: in the step S1, the raw material is one of pyrite, pentlandite, coke, silica, manganese dioxide, and chalcopyrite.
4. The process for producing a stainless steel profile with high corrosion resistance according to claim 1, wherein the process comprises the following steps: the molybdenum element additive is ferromolybdenum.
5. The process for producing a stainless steel profile with high corrosion resistance according to claim 1, wherein the process comprises the following steps: the inert gas is nitrogen, and the content of the nitrogen is 75%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910312025.8A CN111826577A (en) | 2019-04-18 | 2019-04-18 | Production process of stainless steel section with high corrosion performance |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910312025.8A CN111826577A (en) | 2019-04-18 | 2019-04-18 | Production process of stainless steel section with high corrosion performance |
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| CN111826577A true CN111826577A (en) | 2020-10-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170805A (en) * | 2013-03-22 | 2013-06-26 | 常州凯旺金属材料有限公司 | Biomedical stainless steel processing technique and method of manufacturing bolt and precise axel steel thereof |
| CN103459677A (en) * | 2011-03-29 | 2013-12-18 | 新日铁住金株式会社 | Surface-treated steel sheet and method for producing same |
| CN104540910A (en) * | 2012-07-30 | 2015-04-22 | 株式会社京都材料 | Coating and coated steel |
| CN105568282A (en) * | 2014-10-11 | 2016-05-11 | 青岛博利尔机械设备有限公司 | Carbon steel surface treatment method |
| CN107851813A (en) * | 2015-08-12 | 2018-03-27 | 杰富意钢铁株式会社 | The dividing plate of polymer electrolyte fuel cell is with metallic plate and its manufacture metallic plate |
-
2019
- 2019-04-18 CN CN201910312025.8A patent/CN111826577A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459677A (en) * | 2011-03-29 | 2013-12-18 | 新日铁住金株式会社 | Surface-treated steel sheet and method for producing same |
| CN104540910A (en) * | 2012-07-30 | 2015-04-22 | 株式会社京都材料 | Coating and coated steel |
| CN103170805A (en) * | 2013-03-22 | 2013-06-26 | 常州凯旺金属材料有限公司 | Biomedical stainless steel processing technique and method of manufacturing bolt and precise axel steel thereof |
| CN105568282A (en) * | 2014-10-11 | 2016-05-11 | 青岛博利尔机械设备有限公司 | Carbon steel surface treatment method |
| CN107851813A (en) * | 2015-08-12 | 2018-03-27 | 杰富意钢铁株式会社 | The dividing plate of polymer electrolyte fuel cell is with metallic plate and its manufacture metallic plate |
Non-Patent Citations (2)
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