CN115927974A - Forming method of corrosion-resistant building steel - Google Patents
Forming method of corrosion-resistant building steel Download PDFInfo
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- CN115927974A CN115927974A CN202211594032.XA CN202211594032A CN115927974A CN 115927974 A CN115927974 A CN 115927974A CN 202211594032 A CN202211594032 A CN 202211594032A CN 115927974 A CN115927974 A CN 115927974A
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- nickel
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- building steel
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000005260 corrosion Methods 0.000 title claims abstract description 26
- 230000007797 corrosion Effects 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 33
- 238000000137 annealing Methods 0.000 claims abstract description 15
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 238000004781 supercooling Methods 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 229910001562 pearlite Inorganic materials 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 4
- RIRXDDRGHVUXNJ-UHFFFAOYSA-N [Cu].[P] Chemical compound [Cu].[P] RIRXDDRGHVUXNJ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000011574 phosphorus Substances 0.000 claims abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 14
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000005242 forging Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000007670 refining Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 1
- 239000013078 crystal Substances 0.000 abstract description 4
- 239000006104 solid solution Substances 0.000 abstract description 3
- 238000004381 surface treatment Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nickel and chromium Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Heat Treatment Of Steel (AREA)
Abstract
The invention discloses a forming method of corrosion-resistant building steel, which comprises the following elements in parts by weight: 100-120 parts of iron, 0.035-0.08 part of carbon, 0.02-0.04 part of nickel, 0.3-0.8 part of copper and 0.3-0.8 part of nickel, wherein phosphorus and copper are added in the form of phosphorus-copper alloy; in the crystallization process, nickel element is dispersed and precipitated and distributed among ferrite, and the forming method is characterized in that 0.3-0.8 part of nickel element is added and a super-cooling annealing mode is adopted, so that nickel is dissolved in iron in a solid solution mode. When the crystal grains are formed, nickel element is effectively precipitated and diffused into the solid solution, so that the nickel element is dispersed and distributed in pearlite in the austenite dissolving process to be diffused to a part stressed above the positive edge dislocation line, the stability of a deformation zone is ensured, and the anti-corrosion capability of the surface of the steel piece is improved.
Description
Technical Field
The invention relates to a forming method of corrosion-resistant building steel.
Background
The building steel is used as a main bearing unit in a building, and the corrosion resistance of the building steel is particularly critical. In the traditional building, the performance of steel materials can slide down in stages due to acid-base corrosion, salt water immersion and the like, and particularly in the offshore building, the service life of the building can be seriously shortened.
At present, the common corrosion resisting modes include coating of a corrosion inhibitor, coating of a corrosion resisting pigment or other surface treatment modes, but once the surface treatment mode generates damage of a surface skin, the corrosion speed of the surface treatment mode exceeds that of steel which is not subjected to surface treatment, and the electrochemical corrosion phenomenon is serious and even generated.
From the viewpoint of product and stable use, the stability of the building material is far better than that of the surface treatment means due to the optimization based on metallographic structure so as to improve the corrosion resistance.
However, the existing enhancement mode is usually achieved by using a large amount of trace elements, such as metals like nickel and chromium, which brings about a sharp increase in cost and corresponding environmental protection problems. Therefore, a forming method which can effectively increase the corrosion resistance of the building steel without increasing the use amount of trace elements is urgently needed.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a forming method of corrosion-resistant building steel.
A forming method of corrosion-resistant building steel comprises the following elements in parts by weight:
100-120 parts of iron, 0.035-0.08 part of carbon, 0.02-0.04 part of nickel, 0.3-0.8 part of copper and 0.3-0.8 part of nickel, wherein phosphorus and copper are added in the form of phosphorus-copper alloy;
in the crystallization process, nickel elements are dispersed and separated out and distributed among ferrite, and the dispersion crystallization parameters are as follows:
the method comprises the steps of melting alloy elements at a temperature of more than 1500 ℃, forming superfine pearlite in the casting process after melting, carrying out super-cooling annealing at 640-680 ℃ to form austenite, dissolving the austenite after water quenching, and forming a plurality of deformation zones in a forging mode, wherein nickel elements are dispersed and distributed in the deformation zones.
Furthermore, the forged steel is subjected to aging treatment, the aging temperature is below 200 ℃, and the aging time is 50-80h.
Further, when refining is carried out after melting, borosilicate compound with 2-3 times of carbon content is added, and then the temperature is reduced to normal temperature in a gradient cooling mode in the casting process, wherein the gradient cooling comprises three times of cooling, the amplitude of each time of cooling is 200-300 ℃, and the heat preservation time after cooling is 80-160min.
Further, the cooling rate is 5-18 ℃/min, and inert gas is introduced for protection during cooling.
Further, the inert gas is nitrogen.
The traditional annealing temperature is 727-912 ℃, if complete annealing is to be achieved, the traditional means is to adopt a mode of overheating annealing, so that enough austenite is formed, the grain size of the austenite is uniform, the mechanical property is good, but at the moment, the nickel element is dissolved in the iron element in a solid mode, the main function of the nickel element is to improve the mechanical property in the alloy, and the nickel element cannot be effectively precipitated.
And by adopting a super-cooling annealing mode, under the condition that the temperature is at least 40-60 ℃ lower than the traditional annealing temperature, namely at 640-680 ℃, the super-cooling annealing is carried out, the formed austenite particles are coarse, the subsequent forging processing is facilitated, and therefore enough deformation zones can be generated in the forging process so as to facilitate the precipitation of nickel elements in the form of pearlite.
The mechanical property is slightly reduced because the grain diameter is larger, but the wear resistance and the corrosion resistance of the alloy are improved through the improvement of the surface residual amount of the nickel, so that the corrosion resistance of the alloy is finally improved.
Has the beneficial effects that:
by adding 0.3-0.8 parts of nickel element and adopting a super-cooling annealing mode, nickel is dissolved in iron. When the crystal grains are formed, nickel element is effectively precipitated and diffused into the solid solution, so that the nickel element is dispersed and distributed in pearlite in the austenite dissolving process to be diffused to a part stressed above the positive edge dislocation line, the stability of a deformation zone is ensured, and the anti-corrosion capability of the surface of the steel piece is improved.
Moreover, because the nickel element contributes to the generation of austenite, the growth degree of austenite crystal grains is lower than that of common alloy without nickel in the process of the undercooling annealing, and the defects of coarse crystal grains and low mechanical property caused by the undercooling austenite can be effectively improved in the subsequent forging process.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
Example (b):
a forming method of corrosion-resistant building steel comprises the following elements in parts by weight:
118 parts of iron, 0.06 part of carbon, 0.04 part of nickel, 0.5 part of copper, 0.5 part of nickel, wherein phosphorus and copper are added in the form of a phosphorus-copper alloy;
in the crystallization process, nickel elements are dispersed and separated out and distributed among ferrite, and the dispersion crystallization parameters are as follows:
the method comprises the steps of melting alloy elements at a temperature of more than 1500 ℃, forming superfine pearlite in the casting process after melting, carrying out super-cooling annealing at 680 ℃ to form austenite, dissolving the austenite after water quenching, and forming a plurality of deformation zones in a forging mode, wherein nickel elements are dispersed and distributed in the deformation zones.
By adopting a super-cooling annealing mode, under the condition that the annealing temperature is at least 40-60 ℃ lower than the traditional annealing temperature, namely at 680 ℃, the formed austenite particles are coarse, so that the subsequent forging processing is facilitated, and therefore, enough deformation zones can be generated in the forging process so as to facilitate the precipitation of nickel elements in the form of pearlite.
The mechanical property is slightly reduced because the grain diameter is larger, but the wear resistance and the corrosion resistance of the alloy are improved through the improvement of the surface residual amount of the nickel, so that the corrosion resistance of the alloy is finally improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The forming method of the corrosion-resistant building steel is characterized by comprising the following elements in parts by mass:
100-120 parts of iron, 0.035-0.08 part of carbon, 0.02-0.04 part of nickel, 0.3-0.8 part of copper and 0.3-0.8 part of nickel, wherein phosphorus and copper are added in the form of phosphorus-copper alloy;
in the crystallization process, nickel elements are dispersed and separated out and distributed among ferrite, and the dispersion crystallization parameters are as follows:
the method comprises the steps of melting alloy elements at a temperature of more than 1500 ℃, forming superfine pearlite in the casting process after melting, carrying out super-cooling annealing at 640-680 ℃ to form austenite, dissolving the austenite after water quenching, and forming a plurality of deformation zones in a forging mode, wherein nickel elements are dispersed and distributed in the deformation zones.
2. A method of forming a corrosion resistant building steel according to claim 1 where the forged steel is aged at 200 ℃ or less for 50-80 hours.
3. The method for molding a corrosion-resistant building steel according to claim 1, wherein, during refining after melting, a borosilicate compound having a carbon content of 2 to 3 times is added, and after the borosilicate compound is added, the temperature is reduced to normal temperature in a casting process by a gradient cooling method, wherein the gradient cooling comprises three times of cooling, the amplitude of each cooling is 200 to 300 ℃, and the holding time after cooling is 80 to 160min.
4. The method for forming a corrosion-resistant building steel material according to claim 3, wherein the cooling rate is 5-18 ℃/min, and inert gas is introduced for protection during cooling.
5. The method of forming a corrosion-resistant building steel according to claim 4, wherein the inert gas is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211594032.XA CN115927974A (en) | 2022-12-13 | 2022-12-13 | Forming method of corrosion-resistant building steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211594032.XA CN115927974A (en) | 2022-12-13 | 2022-12-13 | Forming method of corrosion-resistant building steel |
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| Publication Number | Publication Date |
|---|---|
| CN115927974A true CN115927974A (en) | 2023-04-07 |
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| CN202211594032.XA Pending CN115927974A (en) | 2022-12-13 | 2022-12-13 | Forming method of corrosion-resistant building steel |
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| Country | Link |
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| CN (1) | CN115927974A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894456A (en) * | 2015-06-25 | 2015-09-09 | 潘应生 | High-strength electricity-conductive alloy and surface treatment technique |
| CN107699813A (en) * | 2017-11-27 | 2018-02-16 | 徐州新永嘉特种金属科技有限公司 | A kind of stainless steel with antibacterial functions |
| CN107937835A (en) * | 2017-10-18 | 2018-04-20 | 江苏理工学院 | A kind of corrosion resistant diphase stainless steel alloy material and its manufacturing process |
| CN108728740A (en) * | 2018-04-28 | 2018-11-02 | 唐山钢铁集团有限责任公司 | A kind of low yield strength ratio rail truck hot rolled strip and its production method |
| CN109943781A (en) * | 2019-04-19 | 2019-06-28 | 安徽省汉甲机电设备科技有限公司 | A kind of preparation method of Antibacterial stainless steel |
| CN110643898A (en) * | 2019-10-15 | 2020-01-03 | 中南大学 | Wear-resistant corrosion-resistant nonmagnetic alloy material and preparation method thereof |
| CN112662946A (en) * | 2020-12-10 | 2021-04-16 | 成都典惟宁建筑科技有限公司 | Corrosion-resistant bridge steel and preparation method thereof |
-
2022
- 2022-12-13 CN CN202211594032.XA patent/CN115927974A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894456A (en) * | 2015-06-25 | 2015-09-09 | 潘应生 | High-strength electricity-conductive alloy and surface treatment technique |
| CN107937835A (en) * | 2017-10-18 | 2018-04-20 | 江苏理工学院 | A kind of corrosion resistant diphase stainless steel alloy material and its manufacturing process |
| CN107699813A (en) * | 2017-11-27 | 2018-02-16 | 徐州新永嘉特种金属科技有限公司 | A kind of stainless steel with antibacterial functions |
| CN108728740A (en) * | 2018-04-28 | 2018-11-02 | 唐山钢铁集团有限责任公司 | A kind of low yield strength ratio rail truck hot rolled strip and its production method |
| CN109943781A (en) * | 2019-04-19 | 2019-06-28 | 安徽省汉甲机电设备科技有限公司 | A kind of preparation method of Antibacterial stainless steel |
| CN110643898A (en) * | 2019-10-15 | 2020-01-03 | 中南大学 | Wear-resistant corrosion-resistant nonmagnetic alloy material and preparation method thereof |
| CN112662946A (en) * | 2020-12-10 | 2021-04-16 | 成都典惟宁建筑科技有限公司 | Corrosion-resistant bridge steel and preparation method thereof |
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