CN115141970A - HRB500E microalloying control method - Google Patents
HRB500E microalloying control method Download PDFInfo
- Publication number
- CN115141970A CN115141970A CN202210727402.6A CN202210727402A CN115141970A CN 115141970 A CN115141970 A CN 115141970A CN 202210727402 A CN202210727402 A CN 202210727402A CN 115141970 A CN115141970 A CN 115141970A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- alloy
- microalloying
- hrb500e
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 88
- 239000010959 steel Substances 0.000 claims abstract description 88
- 229910001199 N alloy Inorganic materials 0.000 claims abstract description 57
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 42
- 239000000956 alloy Substances 0.000 claims abstract description 42
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910000628 Ferrovanadium Inorganic materials 0.000 claims abstract description 31
- 238000010079 rubber tapping Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 238000009628 steelmaking Methods 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 description 7
- 229910000592 Ferroniobium Inorganic materials 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- ZFGFKQDDQUAJQP-UHFFFAOYSA-N iron niobium Chemical compound [Fe].[Fe].[Nb] ZFGFKQDDQUAJQP-UHFFFAOYSA-N 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Images
Classifications
-
- 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
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides an HRB500E microalloying control method, which relates to the technical field of metallurgical steelmaking and comprises the following steps: s1: controlling the steel-making component requirements of HRB500E anti-seismic steel bars according to the industry standard; s2: during the microalloying operation of tapping, testing the components of the vanadium-nitrogen alloy to obtain the content of V element of the vanadium-nitrogen alloy; s3: calculating the amount of vanadium-nitrogen alloy required to be added into a single furnace according to the steel output T ton of the single furnace by adding 0.054% of V element by using vanadium-nitrogen alloy, and adding the vanadium-nitrogen alloy; the method uses a means of combining the ferrovanadium alloy and the vanadium-nitrogen alloy, carries out proportioning according to the content of the V element, controls the content of the V element in the molten steel within a standard range, ensures the yield strength of the HRB500E anti-seismic steel bar, can control the content of the N element in the molten steel within the standard range due to the reduction of the utilization of the N-containing alloys such as the vanadium-nitrogen alloy, and the like, avoids the condition that the yield ratio of the steel bar cannot meet the national standard due to the increase of the N element in the steel, and promotes the quality improvement.
Description
Technical Field
The invention relates to the technical field of metallurgical steelmaking, in particular to a HRB500E microalloying control method.
Background
The HRB500E earthquake-resistant steel bar has the characteristics of high strength, good performance and good earthquake-resistant performance, and is widely applied to buildings with high-rise, large-span and high earthquake-resistant requirements;
in the existing microalloying process, most steel enterprises adopt a microalloying process of vanadium-nitrogen alloy or combination of vanadium-nitrogen alloy and ferroniobium alloy to ensure various performance indexes of the HRB500E aseismic steel bar, however, the vanadium-nitrogen alloy microalloying is adopted only, the content of nitrogen in molten steel is increased, the nitrogen content in steel is increased to play a role in fine grain strengthening, the yield and tensile strength increment basic difference of N element is not large, the yield ratio tends to become small, the probability of unqualified yield ratio of the HRB500E aseismic steel bar is increased, and the vanadium-nitrogen alloy and ferroniobium alloy composite microalloying mode is adopted to increase the content of niobium in the molten steel, increase the crack sensitivity of the steel and increase the probability of crack defects of the molten steel in the pouring and rolling processes, so the invention provides an HRB500E microalloying control method to solve the problems in the prior art.
Disclosure of Invention
Aiming at the problems, the HRB500E microalloying control method controls the content of N element in molten steel within a standard range, avoids the condition that the yield ratio of steel bars cannot meet the national standard due to the increase of N element in steel, also avoids the condition that the crack sensitivity of steel is increased in the pouring and rolling process due to the use of ferrocolumbium, and promotes the quality improvement.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: a HRB500E microalloying control method comprises the following steps:
s1: controlling the steel-making component requirements of HRB500E anti-seismic steel bars according to the industry standard;
s2: during the microalloying operation of tapping, testing the components of the vanadium-nitrogen alloy to obtain the content of V element of the vanadium-nitrogen alloy;
s3: calculating the amount of vanadium-nitrogen alloy required to be added into a single furnace according to the steel tapping amount T ton of the single furnace by adopting 0.054% of vanadium-nitrogen alloy increased V element, and adding the vanadium-nitrogen alloy;
s4: when the microalloying operation is carried out during tapping, the components of the ferrovanadium alloy are tested to obtain the content of the V element of the ferrovanadium alloy;
s5: according to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, and the V element content at the molten steel terminal is controlled to meet the steel grade control standard.
The further improvement lies in that: in S1, HRB500E anti-seismic steel bar steelmaking component requirements are controlled according to the industry standard, which is as follows: c:0.21% -0.25%; si:0.55% -0.8%; mn:1.45% -1.6%; p is less than or equal to 0.04 percent; s is less than or equal to 0.04 percent; v:0.056 to 0.095 percent.
The further improvement lies in that: and in the S2, when the microalloying operation is carried out during tapping, the content of V element in the obtained vanadium-nitrogen alloy is 78% according to the test result of the vanadium-nitrogen alloy.
The further improvement lies in that: in S3, according to the single-furnace steel output T ton, the vanadium-nitrogen alloy is added with 0.054% of V element, and the vanadium-nitrogen alloy is added into the single furnace as follows: t0.054%/78%.
The further improvement lies in that: and in the S4, when the microalloying operation is carried out during tapping, the content of V element in the obtained ferrovanadium alloy is 50 percent according to the test result of the ferrovanadium alloy components.
The further improvement is that: in the S5, according to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, and the V element content of the molten steel terminal is controlled within the range of 0.056-0.095%.
The further improvement lies in that: in the S3 and the S5, converter tapping adopts vanadium-nitrogen alloy and ferrovanadium alloy for microalloying, and the vanadium-nitrogen alloy and the ferrovanadium alloy are added into molten steel when 1/4 of the tapping is carried out.
The invention has the beneficial effects that:
1. the method uses a means of combining the ferrovanadium alloy and the vanadium-nitrogen alloy, carries out proportioning according to the content of the V element, controls the content of the V element of the molten steel within a standard range, ensures the yield strength of the HRB500E anti-seismic steel bar, simultaneously, reduces the utilization of the N-containing alloys such as the vanadium-nitrogen alloy and the like, can control the content of the N element of the molten steel within the standard range, avoids the condition that the yield ratio of the steel bar cannot meet the national standard due to the increase of the N element in the steel, also avoids the condition that the crack sensitivity of the steel is increased in the pouring and rolling processes due to the use of the ferroniobium alloy, and promotes the quality improvement.
2. The invention adopts ferrovanadium to replace vanadium-nitrogen alloy, and reduces the alloy cost of HRB500E anti-seismic steel bar.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Example one
According to fig. 1, this embodiment proposes a HRB500E microalloying control method, which includes the following steps:
s1: controlling the steel-making component requirements of HRB500E anti-seismic steel bars according to the industry standard;
s2: during the microalloying operation of tapping, testing the components of the vanadium-nitrogen alloy to obtain the content of V element of the vanadium-nitrogen alloy;
s3: calculating the amount of vanadium-nitrogen alloy required to be added into a single furnace according to the steel output T ton of the single furnace by adding 0.054% of V element by using vanadium-nitrogen alloy, and adding the vanadium-nitrogen alloy;
s4: during the microalloying operation of tapping, testing the components of the ferrovanadium alloy to obtain the content of V element of the ferrovanadium alloy;
s5: according to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, and the V element content at the molten steel terminal is controlled to meet the steel grade control standard.
The method uses a means of combining the ferrovanadium alloy and the vanadium-nitrogen alloy, carries out proportioning according to the content of the V element, controls the content of the V element in the molten steel to be within a standard range, ensures the yield strength of HRB500E anti-seismic steel bars, reduces the utilization of N-containing alloys such as vanadium-nitrogen alloy and the like, avoids the condition that the strength-to-yield ratio of the steel bars cannot meet the requirements of the national standard GB 1499.2-2018 due to the increase of the N element in the steel, also avoids the condition that the crack sensitivity of the steel is increased in the pouring and rolling processes due to the use of the ferroniobium alloy, and promotes the quality improvement.
Example two
The embodiment provides an HRB500E microalloying control method, which comprises the following steps:
controlling the requirements of HRB500E anti-seismic steel bar steelmaking components according to the industry standard, wherein the standard is as follows: c:0.21% -0.25%; si:0.55% -0.8%; mn:1.45% -1.6%; p is less than or equal to 0.04 percent; s is less than or equal to 0.04 percent; v:0.056% -0.095%.
And during the microalloying operation of tapping, according to the test result of the vanadium-nitrogen alloy, the content of the V element in the obtained vanadium-nitrogen alloy is 78 percent. According to the single-furnace steel output T ton, the vanadium-nitrogen alloy is added with 0.054% of V element, and the vanadium-nitrogen alloy is added into the single furnace as follows: t0.054%/78%, adding vanadium-nitrogen alloy into molten steel when tapping 1/4;
and during steel tapping microalloying operation, according to the test result of the components of the ferrovanadium alloy, the content of the V element in the ferrovanadium alloy is 50 percent. According to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, the ferrovanadium alloy is added into the molten steel when 1/4 of the steel is tapped, and the V element content at the end point of the molten steel is controlled within the range of 0.056-0.095%. The method uses a means of combining the ferrovanadium alloy and the vanadium-nitrogen alloy, carries out proportioning according to the content of the V element, controls the content of the V element in the molten steel to be within a standard range, ensures the yield strength of the HRB500E anti-seismic reinforcing steel bar, simultaneously, is beneficial to controlling the addition amount of the vanadium-nitrogen alloy because the utilization of the N-containing alloys such as the vanadium-nitrogen alloy and the like is reduced, fully utilizes the strengthening effect of the N element on the mechanical property of the reinforcing steel bar, avoids the aging influence on the mechanical property of the reinforcing steel bar caused by overhigh N element, and stabilizes various mechanical properties of the HRB500E anti-seismic reinforcing steel bar.
EXAMPLE III
The embodiment provides an HRB500E microalloying control method, which takes the production of 25mm HRB500E anti-seismic steel bars as an example and comprises the following steps:
the 25mm HRB500E anti-seismic steel bar component standard is formulated as follows: c:0.21% -0.25%; si:0.55 to 0.65 percent; mn:1.45% -1.6%; p is less than or equal to 0.04 percent; s is less than or equal to 0.04 percent; v:0.064% -0.072%;
108 tons of molten iron are added into the furnace, and the molten iron comprises the following components: c:0.42 percent; si:0.54 percent; mn:0.28 percent; p:0.148 percent; s:0.023%; the temperature of molten iron is 1299 ℃, and 20 tons of scrap steel are added;
the converter smelting adopts a high-tension complementary blowing process, and the smelting end point molten steel comprises the following components: c:0.08 percent; si:0.0036%; mn:0.12 percent; p:0.021%; s:0.018%;
converter tapping adopts microalloying of vanadium-nitrogen alloy and ferrovanadium alloy, 82kg of vanadium-nitrogen alloy is added into molten steel when 1/4 of the steel is tapped, and 24kg of ferrovanadium alloy is added;
the converter steel output is 121.3 tons, and the content of V element in a refining station is as follows: 0.07 percent of V, meets the standard requirement, and is poured on the bench after the refining argon blowing is more than 10 minutes;
the section of the continuous casting machine is 155mm square billet, the tundish temperature range is 1515-1530 ℃, the throwing speed is 4.0-4.2m/min, the tundish sampling V element content: 0.07 percent of V;
the casting blank is sent into a steel rolling heating furnace after being sent by a hot sending track, the time of the heating furnace is 6-70min, the temperature of the heating furnace is less than or equal to 1180 ℃, and the rolling speed is 15m/s;
the detection result of the steel product inspection components is as follows: c:0.235 percent; si:0.61%; mn:1.51 percent; p:0.021%; s:0.018%; v:0.07%, N content 88ppm;
the detection result of the physical and mechanical properties of the steel bar is as follows: the yield strength is 550MPa, the tensile strength is 690MPa, and the yield ratio is 1.26, and all the performance indexes meet the requirements of GB 1499.2-2018, namely the yield ratio is more than 1.25.
The HRB500E microalloying control method uses a means of combining a ferrovanadium alloy and a vanadium-nitrogen alloy, carries out proportioning according to the content of a V element, controls the content of the V element in molten steel within a standard range, ensures that the yield strength of HRB500E anti-seismic steel bars is more than 500MPa, simultaneously controls the content of the N element in the molten steel within a range of less than or equal to 120ppm as the utilization of the N-containing alloys such as the vanadium-nitrogen alloy and the like is reduced, avoids the condition that the yield ratio of the steel bars cannot meet the requirements of GB 1499.2-2018 of the national standard due to the increase of the N element in steel, namely the yield ratio is less than 1.25, also avoids the condition that the crack sensitivity of the steel is increased in the pouring and rolling processes due to the use of the ferroniobium alloy, and promotes the quality improvement. In addition, the addition of the vanadium-nitrogen alloy is controlled according to the content (90-120 ppm) of a proper N element in the HRB500E anti-seismic steel bar, so that the strengthening effect of the N element on the mechanical property of the steel bar is fully utilized, the yield strength of the HRB500E anti-seismic steel bar is ensured to be more than or equal to 500MPa, the aging influence on the mechanical property of the steel bar caused by overhigh N element is avoided, and various mechanical properties of the HRB500E anti-seismic steel bar are stabilized. Meanwhile, the vanadium-iron alloy is adopted to replace vanadium-nitrogen alloy, so that the cost of HRB500E anti-seismic steel bar alloy is reduced.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A HRB500E microalloying control method is characterized by comprising the following steps:
s1: controlling the steel-making component requirements of HRB500E anti-seismic steel bars according to the industry standard;
s2: during the microalloying operation of tapping, testing the components of the vanadium-nitrogen alloy to obtain the content of V element of the vanadium-nitrogen alloy;
s3: calculating the amount of vanadium-nitrogen alloy required to be added into a single furnace according to the steel tapping amount T ton of the single furnace by adopting 0.054% of vanadium-nitrogen alloy increased V element, and adding the vanadium-nitrogen alloy;
s4: when the microalloying operation is carried out during tapping, the components of the ferrovanadium alloy are tested to obtain the content of the V element of the ferrovanadium alloy;
s5: according to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, and the V element content at the molten steel terminal is controlled to meet the steel grade control standard.
2. The HRB500E microalloying control method as claimed in claim 1, wherein: in S1, HRB500E anti-seismic steel bar steelmaking component requirements are controlled according to the industry standard, which is as follows: c:0.21% -0.25%; si:0.55% -0.8%; mn:1.45% -1.6%; p is less than or equal to 0.04 percent; s is less than or equal to 0.04 percent; v:0.056 to 0.095 percent.
3. The HRB500E microalloying control method according to claim 2, wherein: and in the S2, when the microalloying operation is carried out during tapping, the content of V element in the obtained vanadium-nitrogen alloy is 78% according to the test result of the vanadium-nitrogen alloy.
4. The HRB500E microalloying control method according to claim 3, wherein: in S3, according to the single-furnace steel output T ton, the vanadium-nitrogen alloy is added with 0.054% of V element, and the vanadium-nitrogen alloy is added into the single furnace as follows: t.0.054%/78%.
5. The HRB500E microalloying control method according to claim 4, wherein: and in the S4, when the microalloying operation is carried out during tapping, the content of V element in the obtained ferrovanadium alloy is 50 percent according to the test result of the ferrovanadium alloy components.
6. The HRB500E microalloying control method according to claim 5, wherein: in the S5, according to the control requirement of the V element content of the HRB500E anti-seismic steel bar, the addition amount of the ferrovanadium alloy is adjusted, and the V element content of the molten steel terminal is controlled within the range of 0.056-0.095%.
7. The HRB500E microalloying control method according to claim 6, wherein: in the S3 and the S5, converter tapping adopts microalloying of vanadium-nitrogen alloy and ferrovanadium alloy, and the vanadium-nitrogen alloy and ferrovanadium alloy are added into molten steel when 1/4 of the tapping is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210727402.6A CN115141970A (en) | 2022-06-25 | 2022-06-25 | HRB500E microalloying control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210727402.6A CN115141970A (en) | 2022-06-25 | 2022-06-25 | HRB500E microalloying control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115141970A true CN115141970A (en) | 2022-10-04 |
Family
ID=83408891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210727402.6A Pending CN115141970A (en) | 2022-06-25 | 2022-06-25 | HRB500E microalloying control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115141970A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982489A (en) * | 2006-02-11 | 2007-06-20 | 湖南华菱涟源钢铁有限公司 | Production of III threading reinforcing bar |
| CN102304604A (en) * | 2011-08-31 | 2012-01-04 | 河北钢铁股份有限公司承德分公司 | Smelting technology of III grade hot-rolled ribbed bars |
| CN103469117A (en) * | 2013-08-12 | 2013-12-25 | 武汉钢铁(集团)公司 | Hot-rolled ribbed steel bar having strength-to-yield ratio of 1.25 or more, and production method thereof |
| KR20170143415A (en) * | 2016-06-21 | 2017-12-29 | 현대제철 주식회사 | Steel reinforcement and method of manufacturing the same |
| CN109252105A (en) * | 2018-11-23 | 2019-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | The 500MPa grades of high yield ratio anti-seismic steel bar bars of microalloy containing V and its production method |
| CN109468534A (en) * | 2018-11-23 | 2019-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | The 500MPa grades of high yield ratio anti-seismic steel bar wire rods of microalloy containing V and its production method |
| US20200048726A1 (en) * | 2016-10-21 | 2020-02-13 | Hyundai Steel Company | High-strength reinforcing steel and method for manufacturing same |
-
2022
- 2022-06-25 CN CN202210727402.6A patent/CN115141970A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1982489A (en) * | 2006-02-11 | 2007-06-20 | 湖南华菱涟源钢铁有限公司 | Production of III threading reinforcing bar |
| CN102304604A (en) * | 2011-08-31 | 2012-01-04 | 河北钢铁股份有限公司承德分公司 | Smelting technology of III grade hot-rolled ribbed bars |
| CN103469117A (en) * | 2013-08-12 | 2013-12-25 | 武汉钢铁(集团)公司 | Hot-rolled ribbed steel bar having strength-to-yield ratio of 1.25 or more, and production method thereof |
| KR20170143415A (en) * | 2016-06-21 | 2017-12-29 | 현대제철 주식회사 | Steel reinforcement and method of manufacturing the same |
| US20200048726A1 (en) * | 2016-10-21 | 2020-02-13 | Hyundai Steel Company | High-strength reinforcing steel and method for manufacturing same |
| CN109252105A (en) * | 2018-11-23 | 2019-01-22 | 攀钢集团攀枝花钢铁研究院有限公司 | The 500MPa grades of high yield ratio anti-seismic steel bar bars of microalloy containing V and its production method |
| CN109468534A (en) * | 2018-11-23 | 2019-03-15 | 攀钢集团攀枝花钢铁研究院有限公司 | The 500MPa grades of high yield ratio anti-seismic steel bar wire rods of microalloy containing V and its production method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111270126B (en) | Niobium-titanium-nitrogen and titanium-nitrogen composite microalloyed HRB400E steel bar and production method thereof | |
| KR101484106B1 (en) | Method for Controlling Extremely Low Ti in Extra Low Carbon AlSi-Killed Steel | |
| CN112899552B (en) | Method for controlling inclusions in ultra-low-aluminum non-oriented silicon steel | |
| CN102994871B (en) | Method for smelting medium/high-carbon hard-wired steel by vanadium-titanium containing molten iron | |
| CN108148941B (en) | Smelting method of ultra-low boron steel | |
| CN104988424B (en) | Method for smelting non-oriented silicon steel by using molten iron containing vanadium and titanium | |
| CN109355460B (en) | Titanium-containing composite alloy reinforced cored wire and application thereof in HRB400E deformed steel bar | |
| CN110819891A (en) | Niobium-nitrogen-containing microalloyed HRB500E steel bar and production method thereof | |
| CN110643785A (en) | Refining deoxidation method of low-carbon low-silicon welding wire steel | |
| CN103361561A (en) | Seamless steel tube material for coupling material and preparation method thereof | |
| CN110029263B (en) | Process for producing sulfur-containing and aluminum-containing steel | |
| CN114107781A (en) | Method for rolling 635 MPa-grade high-strength steel bars by using billet waste heat in short process | |
| CN111304404B (en) | Cored wire for oxide metallurgy of vacuum induction furnace and use method | |
| CN111411188A (en) | Preparation method for controlling large-particle inclusions in non-quenched and tempered steel | |
| CN115141970A (en) | HRB500E microalloying control method | |
| CN110453035B (en) | Inclusion control method for improving steel processing performance | |
| CN108950136B (en) | Smelting method of rare earth microalloyed steel | |
| CN114000047A (en) | Low-carbon high-chromium steel plate blank and continuous efficient production method thereof | |
| CN113355585A (en) | HRB400E produced by microalloying vanadium-containing pig iron and method | |
| CN116590597A (en) | Preparation method of superfine crystal high-strength and high-toughness HRB500E anti-seismic steel bar | |
| CN112553410A (en) | Silicon deoxidation process for RH variety steel | |
| CN102634736B (en) | Novel 45 MnMo steel for main hoister shafts and preparation method thereof | |
| CN111471834B (en) | Slab continuous casting plain carbon steel LF desulfurization method | |
| CN115491465B (en) | Method for producing low alloy series steel grade by electric furnace-VD process | |
| RU2818510C1 (en) | Method of producing steel for wind power engineering with low-temperature impact strength |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221004 |