CN108048758A - A kind of outdoor high-strength anti-corrosion steel plate and its processing technology - Google Patents
A kind of outdoor high-strength anti-corrosion steel plate and its processing technology Download PDFInfo
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
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- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- 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
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- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
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- C23C2/40—Plates; Strips
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Abstract
The invention discloses a kind of outdoor high-strength anti-corrosion steel plates, are related to metal smelt technical field.The mass percent of its chemical composition is：C：0.23‑0.38%、Co：1.24‑1.36%、Ni：0.91‑1.34%、Cr:4.12‑5.36%、Mo：0.86‑1.32%、Al：0.55‑0.57%、Ti：0.42‑0.78%、Si：0.13‑0.18%、Ge：0.09‑0.14%、W：0.13‑0.16%、Re：0.16‑0.21%、N：0.31 0.34%, rare earth element：5.21 5.89%, surplus is Fe and inevitable impurity.The invention also discloses a kind of processing technologys of outdoor high-strength anti-corrosion steel plate, not only effectively increase the intensity and toughness of steel plate, while also improve the corrosion resistance of steel plate, so as to effectively extend the service life of steel plate.
Description
Technical field
The present invention relates to metal smelt technical field, more particularly to a kind of outdoor high-strength anti-corrosion steel plate and its processing
Technique.
Background technology
Steel is the general designation of the iron-carbon alloy to phosphorus content mass percent between 0.02% to 2.11%.The change of steel
Studying point can be with great changes have taken place, and the steel containing only carbon is known as carbon steel (carbon steel) or ordinary steel；In actual production, steel is past
It is past to contain different alloying elements according to the difference of purposes, such as：Manganese, nickel, vanadium etc..Application and research history of the mankind to steel
It is quite long, but before the Bessemerizing invention of 19th century, steel produce all be a high efficiency at low cost work.
Nowadays, steel becomes one of most commonly used material in the world with its cheap price, reliable performance, is construction industry, manufacturing industry
With ingredient indispensable in people's daily life, it may be said that steel is the material base of modern society.
Steel plate is used in every field at present, strong although general steel plate has good fireproof performance
Degree is inadequate, and easily corrodes in some moist or acid-base environments, and anticorrosive property is poor, so as to greatly affected
The service life of steel.
The content of the invention
The shortcomings that technical problems to be solved by the invention are, overcome the prior art provides a kind of outdoor high intensity and prevents
Rotten steel plate and its processing technology, not only effectively increase the intensity and toughness of steel plate, while also improve the corrosion resistance of steel plate
Can, so as to effectively extend the service life of steel plate.
In order to solve the above technical problems, technical scheme is as follows：
A kind of outdoor high-strength anti-corrosion steel plate, the mass percent of chemical composition are：C：0.23-0.38%, Co：1.24-
1.36%th, Ni：0.91-1.34%, Cr:4.12-5.36%, Mo：0.86-1.32%, Al：0.55-0.57%, Ti：0.42-
0.78%th, Si：0.13-0.18%, Ge：0.09-0.14%, W：0.13-0.16%, Re：0.16-0.21%, N：0.31-
0.34%th, rare earth element：5.21-5.89%, surplus are Fe and inevitable impurity.
Further, the mass percent of chemical composition is：C：0.31%th, Co：1.29%th, Ni：1.16%th, Cr:
4.68%th, Mo：1.15%th, Al：0.56%th, Ti：0.59%th, Si：0.15%th, Ge：0.12%th, W：0.15%th, Re：0.18%th,
N：0.33%th, rare earth element：5.56%, surplus is Fe and inevitable impurity.
A kind of preceding outdoor high-strength anti-corrosion steel plate, the constituent mass percentage of rare earth element is La：14%th,
Pr：23%th, Nd：16%th, Sm：28%th, Gd：6%, surplus Tb.
The present invention also provides a kind of preparation methods of outdoor high-strength anti-corrosion steel plate, comprise the following steps：S1：It will be each
Raw metal is placed in electron beam furnace body, adjusts the in vivo 0.04~0.05Pa of vacuum degree of electron beam furnace, electron gun
Body make electron beam bombardment to raw material until melting sources into alloy solution, then add in refining agent, carry out refining slagging-off；
S2：Alloy solution is entered into casting ladle, and microalloy treatment, place carry out the alloy solution in casting ladle using rare earth alloy magnesium
Alloy solution is poured into mold progress casting mold after reason and obtains steel plate blank；
S3：Steel plate blank is put into heating furnace and is heated to 590-625 DEG C, 25-30min is kept the temperature, then passes through misting cooling
Steel plate blank is cooled to room temperature by mode, 830-875 DEG C is again heated to, when heat preservation 1-2 is small, then by steel by way of water cooling
Plate blank material is cooled to room temperature；
S4：Steel plate blank is placed again into heating furnace, is heated to 980-1050 DEG C, when heat preservation 2-3 is small, then by water cooling and
Steel plate blank is cooled to room temperature by the mode of air-cooled combination；
S5：Steel plate blank is heated to 540-560 DEG C, carries out first time tempering, when then heat preservation 2-3 is small, then passes through water cooling
Steel are cooled to 390-400 DEG C by mode, are then air-cooled to room temperature, and steel plate blank then is heated to 725-740 DEG C, carry out the
Then double tempering is air-cooled to room temperature；
S6：The steel plate blank that S4 is obtained is placed in acid solution and carries out pickling, steel plate blank is put into Rinsing Area after pickling, is carried out
Steel plate blank, is placed in flux bath by washing again after washing, impregnates 3-5 minutes in a solvent, then takes out, be placed on drying station
Steel plate blank, is placed in the high temperature zinc liquid of thawing by upper carry out drying and processing after drying, makes one layer of zinc of steel plate blank surface attachment
Layer, then takes out steel plate blank, and outer blow is carried out with compressed air；
S7：Steel plate blank is cleared up, polishing grinding, then detected whether to have inside steel with ultrasonic flaw detection instrument and be split
Trace, it is finished product to examine qualification, storage.
A kind of preparation method of preceding outdoor high-strength anti-corrosion steel plate, acid solution is aqueous hydrochloric acid solution in S6.
A kind of preparation method of preceding outdoor high-strength anti-corrosion steel plate, in S6 solvent be zinc chloride, ammonium chloride
Mixed aqueous solution.
A kind of preparation method of preceding outdoor high-strength anti-corrosion steel plate, the temperature of zinc liquid is 445-455 DEG C in S6.
The beneficial effects of the invention are as follows：
(1) in the present invention, C and W is added in the feed, tungsten carbide, tungsten carbide hardness and Buddha's warrior attendant can be formed in high melt
Stone is similar, and wearability is strong, can improve the intensity and wear-resisting property of steel plate；Add Ti, Nb etc. can crystal grain thinning element,
The crystal grain in raw material can be refined during smelting, so as to improve the strength and toughness of steel plate；Co, Mo, Cr, Ti can improve martensite and return
Fiery drag inhibits dislocation substructure and replys；Ni can improve the toughness and intensity of Fe matrixes, and rare earth element can organize corrosive medium
With the interaction of steel plate, the ductility of steel plate can also be increased, the bubble caused by hydrogen in steel is eliminated, while reduce steel
Crackle during sheet metal forming；
(2) in the present invention, using electron-beam smelting alloy, the objectionable impurities member such as O, N, S during alloy melting is greatly reduced
Element, from the degree of purity that alloy is improved containing measuring angle for reducing harmful element, so as to improve the intensity of steel plate；
(3) in the present invention, carried out when being heat-treated to steel in the way of annealing-quenching-double tempering, make the Ovshinsky bodily form
Into pearlitic structrure be more uniformly distributed, avoid the formation of not exactly the same tissue, steel made to obtain higher strength and toughness；
(4) in the present invention, galvanizing processing is carried out to the steel plate after heat treatment, when steel plate is in the zinc liquid for immersing melting, is first existed
Zinc and α iron solid solutions are formed on interface, after zinc reaches saturation in solid solution, two kinds of Elements Atoms of iron zinc diffuse into one another, and expand
The zinc atom being scattered in iron-based body migrates in matrix lattice, gradually forms alloy with iron, the table when steel plate is removed from zinc liquid
Face forms pure zinc layer, and steel plate is made to have excellent corrosion resistance.
Specific embodiment
For present disclosure is made to be easier to be clearly understood, below according to specific embodiment, the present invention is made
Further details of explanation.
Embodiment 1
A kind of outdoor high-strength anti-corrosion steel plate provided in this embodiment, the mass percent of chemical composition are：C：0.23%th,
Co：1.24%th, Ni：0.91%th, Cr:4.12%th, Mo：0.86%th, Al：0.55%th, Ti：0.42%th, Si：0.13%th, Ge：
0.09%th, W：0.13%th, Re：0.16%th, N：0.31%th, rare earth element：5.21%, surplus is Fe and inevitable impurity.
Wherein, the constituent mass percentage of rare earth element is La：14%th, Pr：23%th, Nd：16%th, Sm：28%th, Gd：
6%, surplus Tb.
A kind of preparation method of outdoor high-strength anti-corrosion steel plate provided in this embodiment, comprises the following steps：
S1：Each raw metal is placed in electron beam furnace body, adjusts the in vivo vacuum degree 0.04Pa of electron beam furnace, electricity
Sub- gun body makes electron beam bombardment to raw material until then melting sources add in refining agent, carry out refining and remove into alloy solution
Slag；
S2：Alloy solution is entered into casting ladle, and microalloy treatment, place carry out the alloy solution in casting ladle using rare earth alloy magnesium
Alloy solution is poured into mold progress casting mold after reason and obtains steel plate blank；
S3：Steel plate blank is put into heating furnace and is heated to 590 DEG C, 25min is kept the temperature, then by steel by way of misting cooling
Plate blank material is cooled to room temperature, and is again heated to 830 DEG C, when heat preservation 1 is small, steel plate blank then is cooled to room by way of water cooling
Temperature；
S4：Steel plate blank is placed again into heating furnace, 980 DEG C is heated to, when heat preservation 2 is small, then passes through water cooling and air-cooled knot
Steel plate blank is cooled to room temperature by the mode of conjunction；
S5：Steel plate blank is heated to 540 DEG C, carries out first time tempering, when then heat preservation 2 is small, then will by way of water cooling
Steel are cooled to 390 DEG C, are then air-cooled to room temperature, and steel plate blank then is heated to 725 DEG C, carry out second and are tempered, then
It is air-cooled to room temperature；
S6：The steel plate blank that S4 is obtained is placed in aqueous hydrochloric acid solution and carries out pickling, wherein, the content of hydrochloric acid in aqueous hydrochloric acid solution
For 15%, steel plate blank is put into Rinsing Area after pickling, is washed, steel plate blank is placed in flux bath again after washing,
Zinc chloride, ammonium chloride mixed aqueous solution in impregnate 3 minutes, then take out, be placed on drying station and carry out drying and processing, dry
Steel plate blank is placed in the high temperature zinc liquid of thawing after dry, makes one layer of zinc layers of steel plate blank surface attachment, then by steel plate blank
It takes out, with compressed air blow outside, the temperature of zinc liquid is 445 DEG C；
S7：Steel plate blank is cleared up, polishing grinding, then detected whether to have inside steel with ultrasonic flaw detection instrument and be split
Trace, it is finished product to examine qualification, storage.
Embodiment 2
A kind of outdoor high-strength anti-corrosion steel plate provided in this embodiment, the mass percent of chemical composition are：C：0.38%th,
Co：1.36%th, Ni：1.34%th, Cr:5.36%th, Mo：1.32%th, Al：0.57%th, Ti：0.78%th, Si：0.18%th, Ge：
0.14%th, W：0.16%th, Re：0.21%th, N：0.34%th, rare earth element：5.89%, surplus is Fe and inevitable impurity.
Wherein, the constituent mass percentage of rare earth element is La：14%th, Pr：23%th, Nd：16%th, Sm：28%th, Gd：
6%, surplus Tb.
A kind of preparation method of outdoor high-strength anti-corrosion steel plate provided in this embodiment, comprises the following steps：
S1：Each raw metal is placed in electron beam furnace body, adjusts the in vivo vacuum degree 0.05Pa of electron beam furnace, electricity
Sub- gun body makes electron beam bombardment to raw material until then melting sources add in refining agent, carry out refining and remove into alloy solution
Slag；
S2：Alloy solution is entered into casting ladle, and microalloy treatment, place carry out the alloy solution in casting ladle using rare earth alloy magnesium
Alloy solution is poured into mold progress casting mold after reason and obtains steel plate blank；
S3：Steel plate blank is put into heating furnace and is heated to 625 DEG C, 30min is kept the temperature, then by steel by way of misting cooling
Plate blank material is cooled to room temperature, and is again heated to 875 DEG C, when heat preservation 2 is small, steel plate blank then is cooled to room by way of water cooling
Temperature；
S4：Steel plate blank is placed again into heating furnace, 1050 DEG C is heated to, when heat preservation 3 is small, then passes through water cooling and air-cooled knot
Steel plate blank is cooled to room temperature by the mode of conjunction；
S5：Steel plate blank is heated to 560 DEG C, carries out first time tempering, when then heat preservation 3 is small, then will by way of water cooling
Steel are cooled to 400 DEG C, are then air-cooled to room temperature, and steel plate blank then is heated to 740 DEG C, carry out second and are tempered, then
It is air-cooled to room temperature；
S6：The steel plate blank that S4 is obtained is placed in aqueous hydrochloric acid solution and carries out pickling, wherein, the content of hydrochloric acid in aqueous hydrochloric acid solution
For 18%, steel plate blank is put into Rinsing Area after pickling, is washed, steel plate blank is placed in flux bath again after washing,
Zinc chloride, ammonium chloride mixed aqueous solution in impregnate 5 minutes, then take out, be placed on drying station and carry out drying and processing, dry
Steel plate blank is placed in the high temperature zinc liquid of thawing after dry, makes one layer of zinc layers of steel plate blank surface attachment, then by steel plate blank
It takes out, with compressed air blow outside, the temperature of zinc liquid is 455 DEG C；
S7：Steel plate blank is cleared up, polishing grinding, then detected whether to have inside steel with ultrasonic flaw detection instrument and be split
Trace, it is finished product to examine qualification, storage.
Embodiment 3
A kind of outdoor high-strength anti-corrosion steel plate provided in this embodiment, the mass percent of chemical composition are：C：0.31%th,
Co：1.29%th, Ni：1.16%th, Cr:4.68%th, Mo：1.15%th, Al：0.56%th, Ti：0.59%th, Si：0.15%th, Ge：
0.12%th, W：0.15%th, Re：0.18%th, N：0.33%th, rare earth element：5.56%, surplus is Fe and inevitable impurity.
Wherein, the constituent mass percentage of rare earth element is La：14%th, Pr：23%th, Nd：16%th, Sm：28%th, Gd：
6%, surplus Tb.
A kind of preparation method of outdoor high-strength anti-corrosion steel plate provided in this embodiment, comprises the following steps：
S1：Each raw metal is placed in electron beam furnace body, adjusts the in vivo vacuum degree 0.045Pa of electron beam furnace,
Electron gun make electron beam bombardment to raw material until melting sources into alloy solution, then add in refining agent, refined
Slagging-off；
S2：Alloy solution is entered into casting ladle, and microalloy treatment, place carry out the alloy solution in casting ladle using rare earth alloy magnesium
Alloy solution is poured into mold progress casting mold after reason and obtains steel plate blank；
S3：Steel plate blank is put into heating furnace and is heated to 605 DEG C, 28min is kept the temperature, then by steel by way of misting cooling
Plate blank material is cooled to room temperature, and is again heated to 855 DEG C, when heat preservation 1.5 is small, is then cooled to steel plate blank by way of water cooling
Room temperature；
S4：Steel plate blank is placed again into heating furnace, is heated to 1015 DEG C, when heat preservation 2.5 is small, then by water cooling and air-cooled
With reference to mode steel plate blank is cooled to room temperature；
S5：Steel plate blank is heated to 550 DEG C, carries out first time tempering, when then heat preservation 2.5 is small, then by way of water cooling
Steel are cooled to 395 DEG C, are then air-cooled to room temperature, steel plate blank is then heated to 730 DEG C, second is carried out and is tempered, so
After be air-cooled to room temperature；
S6：The steel plate blank that S4 is obtained is placed in aqueous hydrochloric acid solution and carries out pickling, wherein, the content of hydrochloric acid in aqueous hydrochloric acid solution
For 17%, steel plate blank is put into Rinsing Area after pickling, is washed, steel plate blank is placed in flux bath again after washing,
Zinc chloride, ammonium chloride mixed aqueous solution in impregnate 4 minutes, then take out, be placed on drying station and carry out drying and processing, dry
Steel plate blank is placed in the high temperature zinc liquid of thawing after dry, makes one layer of zinc layers of steel plate blank surface attachment, then by steel plate blank
It takes out, with compressed air blow outside, the temperature of zinc liquid is 450 DEG C；
S7：Steel plate blank is cleared up, polishing grinding, then detected whether to have inside steel with ultrasonic flaw detection instrument and be split
Trace, it is finished product to examine qualification, storage.
By general steel plate as a comparison case, 1~embodiment of embodiment 3 and comparative example are subjected to performance comparison test, it is every
Performance is measured by national standard, and experimental condition and other experiment material all sames, test result are as shown in table 1：
| Pilot project | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example |
| Brinell hardness/HB | 261 | 253 | 276 | 239 |
| Tensile strength/MPa | 658 | 661 | 686 | 624 |
| The contraction percentage of area/% | 24.3 | 25.2 | 27.5 | 22.3 |
| Year corrosion depth | 0.04 | 0.05 | 0.03 | 0.06 |
Table 1
As can be seen from Table 1, compared with common iron, the outdoor high-strength anti-corrosion steel plate for preparing of the present invention, not only hardness is more
Height, tensile strength bigger, and end face shrinking percentage bigger, while year corrosion depth smaller, it can be seen that, family prepared by the present invention
External application high-strength anti-corrosion steel plate, not only effectively increases the intensity and toughness of steel plate, while also improves the corrosion resistance of steel plate
Can, so as to effectively extend the service life of steel plate.
In addition to the implementation, the present invention can also have other embodiment.It is all to use equivalent substitution or equivalent transformation shape
Into technical solution, all fall within the present invention claims protection domain.
Claims (7)
1. a kind of outdoor high-strength anti-corrosion steel plate, it is characterised in that：The mass percent of its chemical composition is：C：0.23-
0.38%、Co：1.24-1.36%、Ni：0.91-1.34%、Cr:4.12-5.36%、Mo：0.86-1.32%、Al：0.55-0.57%、
Ti：0.42-0.78%、Si：0.13-0.18%、Ge：0.09-0.14%、W：0.13-0.16%、Re：0.16-0.21%、N：0.31-
0.34%th, rare earth element：5.21-5.89%, surplus are Fe and inevitable impurity.
2. a kind of outdoor high-strength anti-corrosion steel plate according to claim 1, it is characterised in that：The quality of its chemical composition
Percentage is：C：0.31%、Co：1.29%、Ni：1.16%、Cr:4.68%、Mo：1.15%、Al：0.56%、Ti：0.59%、Si：
0.15%、Ge：0.12%、W：0.15%、Re：0.18%、N：0.33%th, rare earth element：5.56%, surplus for Fe and inevitably it is miscellaneous
Matter.
3. a kind of outdoor high-strength anti-corrosion steel plate according to claim 1 or 2, it is characterised in that：The rare earth element
Constituent mass percentage be La：14%、Pr：23%、Nd：16%、Sm：28%、Gd：6%, surplus Tb.
4. a kind of preparation method of outdoor high-strength anti-corrosion steel plate as described in claim 1, it is characterised in that：Including following
Step：
S1：Each raw metal is placed in electron beam furnace body, the in vivo vacuum degree 0.04 of adjusting electron beam furnace~
0.05Pa, electron gun makes electron beam bombardment to raw material until melting sources are into alloy solution, then adds in refining agent, into
Row refining slagging-off；
S2：Alloy solution is entered into casting ladle, and microalloy treatment, place carry out the alloy solution in casting ladle using rare earth alloy magnesium
Alloy solution is poured into mold progress casting mold after reason and obtains steel plate blank；
S3：Steel plate blank is put into heating furnace and is heated to 590-625 DEG C, 25-30min is kept the temperature, then passes through misting cooling
Steel plate blank is cooled to room temperature by mode, 830-875 DEG C is again heated to, when heat preservation 1-2 is small, then by steel by way of water cooling
Plate blank material is cooled to room temperature；
S4：Steel plate blank is placed again into heating furnace, is heated to 980-1050 DEG C, when heat preservation 2-3 is small, then by water cooling and
Steel plate blank is cooled to room temperature by the mode of air-cooled combination；
S5：Steel plate blank is heated to 540-560 DEG C, carries out first time tempering, when then heat preservation 2-3 is small, then passes through water cooling
Steel are cooled to 390-400 DEG C by mode, are then air-cooled to room temperature, and steel plate blank then is heated to 725-740 DEG C, carry out the
Then double tempering is air-cooled to room temperature；
S6：The steel plate blank that S4 is obtained is placed in acid solution and carries out pickling, steel plate blank is put into Rinsing Area after pickling, is carried out
Steel plate blank, is placed in flux bath by washing again after washing, impregnates 3-5 minutes in a solvent, then takes out, be placed on drying station
Steel plate blank, is placed in the high temperature zinc liquid of thawing by upper carry out drying and processing after drying, makes one layer of zinc of steel plate blank surface attachment
Layer, then takes out steel plate blank, and outer blow is carried out with compressed air；
S7：Steel plate blank is cleared up, polishing grinding, then detected whether to have inside steel with ultrasonic flaw detection instrument and be split
Trace, it is finished product to examine qualification, storage.
5. a kind of preparation method of outdoor high-strength anti-corrosion steel plate according to claim 4, it is characterised in that：The S6
Middle acid solution is aqueous hydrochloric acid solution.
6. a kind of preparation method of outdoor high-strength anti-corrosion steel plate according to claim 4, it is characterised in that：The S6
Middle solvent is zinc chloride, the mixed aqueous solution of ammonium chloride.
7. a kind of preparation method of outdoor high-strength anti-corrosion steel plate according to claim 4, it is characterised in that：The S6
The temperature of middle zinc liquid is 445-455 DEG C.
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| CN111378904A (en) * | 2020-05-14 | 2020-07-07 | 太仓鑫祥金属制品有限公司 | Preparation process of corrosion-resistant ultrahigh-strength steel part for bending machine |
| CN111519102A (en) * | 2020-03-26 | 2020-08-11 | 徐州尚航船舶配件有限公司 | High-strength corrosion-resistant escalator for ship and preparation process thereof |
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| CN111519102A (en) * | 2020-03-26 | 2020-08-11 | 徐州尚航船舶配件有限公司 | High-strength corrosion-resistant escalator for ship and preparation process thereof |
| CN111378904A (en) * | 2020-05-14 | 2020-07-07 | 太仓鑫祥金属制品有限公司 | Preparation process of corrosion-resistant ultrahigh-strength steel part for bending machine |
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Application publication date: 20180518 |