CN108690933A - A kind of HRB335E hot rollings anti-seismic steel bar - Google Patents
A kind of HRB335E hot rollings anti-seismic steel bar Download PDFInfo
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- CN108690933A CN108690933A CN201710237384.2A CN201710237384A CN108690933A CN 108690933 A CN108690933 A CN 108690933A CN 201710237384 A CN201710237384 A CN 201710237384A CN 108690933 A CN108690933 A CN 108690933A
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- Prior art keywords
- steel
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- argon
- tapping
- bar
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Classifications
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- 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
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- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/32—Blowing from above
-
- 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
- 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
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of HRB335E hot rollings anti-seismic steel bar, the technological process of production of the reinforcing bar is:Converter-Argon-continuous casting-bar unit;1, process conditions:40t oxygen top-blown converters, tap 44t~46t, 1650~1680 DEG C of blowing end point temperature, terminal w[C]=0.08%~0.14%;Casting blank section 150mm × 150mm square billets, scale:11.8m;An one stove pair machine;2, steelmaking process deoxidation alloying:Pre-deoxidant 1kg/t is added before tapping, then silicomangan 19.5kg/t steel is added, ferrosilicon 2.5kg/t steel is added, it adds 0.5~1kg/t of end-deoxidizer Si-Ca-Ba and carries out molten steel final deoxidizing, it is eventually adding rich nitrogen special alloy 0.6~0.7Kg/t steel, alloy must be initially added into tapping 1/4, be added in tapping 3/4, steel ladle full BOTTOM ARGON BLOWING, Argon stir 0.2~0.35Mpa of argon pressure;Argon blowing time is controlled more than 4min;The chemical analysis of the richness nitrogen special alloy:N≥13%;Si≥20%,Mn≥16%,Al=5%-13%,V≥3%,P≤0.1%,S≤0.1%.
Description
Technical field
The present invention relates to a kind of HRB335E hot rollings anti-seismic steel bars.
Background technology
Ribbed Bar for building is generally divided into:Two kinds of regular reinforcement and anti-seismic steel bar.Regular reinforcement only requires that reinforcing bar meets
Yield strength, the requirement of the standard of tensile strength, and anti-seismic steel bar should meet yield strength, the requirement of the standard of tensile strength, again
Meet reinforcing bar actual measurement yield strength and reinforcing bar actual measurement tensile strength ratio, reinforcing bar actual measurement yield strength and the surrender of standard regulation are strong
The ratio between degree.
Invention content
The purpose of the present invention is to provide a kind of HRB335E hot rollings anti-seismic steel bars, add on the basis of common building reinforcing bar
Enter a certain amount of special alloy element, existing regular reinforcement ingredient redesign and produces anti-seismic steel bar, makes the steel
More excellent intensity and toughness index are obtained, not only meets national standard, but also production cost can be reduced.
The object of the present invention is achieved like this:A kind of HRB335E hot rollings anti-seismic steel bar, the production technology stream of the reinforcing bar
Cheng Wei:Converter-Argon-continuous casting-bar unit;
1, process conditions:40t oxygen top-blown converters, tap 44t~46t, 1650~1680 DEG C of blowing end point temperature, terminal w
[C]=0.08%~0.14%;Casting blank section 150mm × 150mm square billets, scale:11.8m ;An one stove pair machine;
2, steelmaking process deoxidation alloying:Pre-deoxidant 1kg/t is added before tapping, silicomangan 19.5kg/t steel is then added,
Ferrosilicon 2.5kg/t steel is added, adds 0.5~1kg/t of end-deoxidizer Si-Ca-Ba and carries out molten steel final deoxidizing, be eventually adding richness
Nitrogen special alloy 0.6~0.7Kg/t steel, alloy must be initially added into tapping 1/4, be added in tapping 3/4, steel ladle full
BOTTOM ARGON BLOWING, Argon stir 0.2~0.35Mpa of argon pressure;Argon blowing time is controlled more than 4min;The change of the richness nitrogen special alloy
Study part:N≥13%;Si≥20%,Mn≥16%,Al=5%-13%,V≥3%,P≤0.1%,S≤0.1%.
It is then necessary will to obtain excellent performance mainly using C, Si, Mn as the intensified element of steel for former HRB335E component systems
Si-Fe, Mn-Fe of sufficient amount is added, makes the Composition Control of C, Si, Mn close to the national standard upper limit, and it is special by the rich nitrogen of application
Kind alloy technology can reduce the ingredient of C, Si, Mn, reduce Si-Fe alloys, Mn-Fe alloy additions, reduce production cost.This hair
Bright method is main effective alloying element with nitrogen, and matches and promote catalyst added with reaction, inhibits nitrogen-atoms trip isolated
The microalloys such as inhibitor, trace vanadium, it is theoretical using the solution strengthening and precipitation strength of nitride, form and stablize austenite group
It knits, achievees the purpose that strengthen steel.The richness nitrogen special alloy is free of to the harmful other elements of molten steel, is multiple elements design member
Element alloy.
Nitrogen is applied as beneficial element by reinforcing bar production becomes common recognition already, but due to nitrogen relative inertness, in addition
Solubility is smaller in steel, will be discharged on a small quantity by steel surface in steel to form the nomadic nitrogen of compound, and thereby produce rigidity
The timeliness of energy.When in steel, there are when v element, stable nitride, carbide can be formed with carbon, nitrogen, these compounds are in high temperature
Lower dissolving, is precipitated at low temperature, plays and crystal grain is inhibited to grow up and precipitation enhancement.As a result,:Suitably reducing carbon equivalent
Under the conditions of, the intensity and toughness of steel are can guarantee or even greatly improved, significant cost advantage is thus shown.HRB335E hot rollings
Anti-seismic steel bar generally uses ferrosilicon, silicomanganese, calsibar alloy to carry out alloying, by the way that a kind of rich nitrogen special alloy is added, changes
Alloying technology will promote the disperse educt of carbonitride in steel, nitride, thus achieve the effect that crystal grain thinning.Using richness
Nitrogen special alloy not only improves the intensity and toughness of steel, while reducing silicomanganese element in steel, achievees the purpose that this synergy.
It is smelted using the method for the present invention, smelts production and carried out in 40t oxygen top-blown converters, by the ingredient and work of design
Skill has carried out tracking production, and production technology is strictly pressed technological operation regulation and executed, and ingredient hit rate reaches 99.80%, the following table 1 system
It is calculated as ingredient average control range, table 2 is the mechanical property of hot rolling anti-seismic steel bar of the present invention, performance statistics:The rolling of steel is in stick
Material unit carries out, and performance fully meets national standard.
Specific implementation mode
A kind of HRB335E hot rollings anti-seismic steel bar, the technological process of production of the reinforcing bar are:Converter-Argon-continuous casting-bar
Unit;
1, process conditions:40t oxygen top-blown converters, tap 44t~46t, 1650~1680 DEG C of blowing end point temperature, terminal w
[C]=0.08%~0.14%;Casting blank section 150mm × 150mm square billets, scale:11.8m ;An one stove pair machine;
2, steelmaking process deoxidation alloying:Pre-deoxidant 1kg/t is added before tapping, silicomangan 19.5kg/t steel is then added,
Ferrosilicon 2.5kg/t steel is added, adds 0.5~1kg/t of end-deoxidizer Si-Ca-Ba and carries out molten steel final deoxidizing, be eventually adding richness
Nitrogen special alloy 0.6~0.7Kg/t steel, alloy must be initially added into tapping 1/4, be added in tapping 3/4, steel ladle full
BOTTOM ARGON BLOWING, Argon stir argon pressure 0.3Mpa;Argon blowing time is controlled in 8min;The chemical analysis of the richness nitrogen special alloy:N≥
13%;Si≥20%,Mn≥16%,Al=5%-13%,V≥3%,P≤0.1%,S≤0.1%.
Claims (1)
1. a kind of HRB335E hot rollings anti-seismic steel bar, it is characterised in that:The technological process of production of the reinforcing bar is:Converter-Argon-company
Casting-bar unit;
1), process conditions:40t oxygen top-blown converters, tap 44t~46t, 1650~1680 DEG C of blowing end point temperature, terminal w
[C]=0.08%~0.14%;Casting blank section 150mm × 150mm square billets, scale:11.8m ;An one stove pair machine;
2), steelmaking process deoxidation alloying:Pre-deoxidant 1kg/t is added before tapping, silicomangan 19.5kg/t steel is then added,
Ferrosilicon 2.5kg/t steel is added, adds 0.5~1kg/t of end-deoxidizer Si-Ca-Ba and carries out molten steel final deoxidizing, be eventually adding richness
Nitrogen special alloy 0.6~0.7Kg/t steel, alloy must be initially added into tapping 1/4, be added in tapping 3/4, steel ladle full
BOTTOM ARGON BLOWING, Argon stir 0.2~0.35Mpa of argon pressure;Argon blowing time is controlled more than 4min;The change of the richness nitrogen special alloy
Study part:N≥13%;Si≥20%,Mn≥16%,Al=5%-13%,V≥3%,P≤0.1%,S≤0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237384.2A CN108690933A (en) | 2017-04-12 | 2017-04-12 | A kind of HRB335E hot rollings anti-seismic steel bar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710237384.2A CN108690933A (en) | 2017-04-12 | 2017-04-12 | A kind of HRB335E hot rollings anti-seismic steel bar |
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| CN108690933A true CN108690933A (en) | 2018-10-23 |
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| CN201710237384.2A Pending CN108690933A (en) | 2017-04-12 | 2017-04-12 | A kind of HRB335E hot rollings anti-seismic steel bar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410507A (en) * | 2019-08-23 | 2021-02-26 | 江苏集萃冶金技术研究院有限公司 | Manufacturing method of resource-saving HRB400 high-strength steel bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405351A (en) * | 2002-03-18 | 2003-03-26 | 安阳钢铁股份有限公司 | High-strength low alloy steel micro alloying by using rich-nitrogen and vanadium-containing alloy and its smelting method |
| CN103031402A (en) * | 2012-06-06 | 2013-04-10 | 宝钢集团新疆八一钢铁有限公司 | Production method for high-strength aseismic steel bar HRB400E |
| CN103898403A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | HRB500 hot-rolled belt rib antiseismic steel bar and preparation method thereof |
| CN105018839A (en) * | 2015-08-14 | 2015-11-04 | 武钢集团昆明钢铁股份有限公司 | 420 MPa grade high-performance anti-shock H-type steel and preparation method thereof |
-
2017
- 2017-04-12 CN CN201710237384.2A patent/CN108690933A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405351A (en) * | 2002-03-18 | 2003-03-26 | 安阳钢铁股份有限公司 | High-strength low alloy steel micro alloying by using rich-nitrogen and vanadium-containing alloy and its smelting method |
| CN103031402A (en) * | 2012-06-06 | 2013-04-10 | 宝钢集团新疆八一钢铁有限公司 | Production method for high-strength aseismic steel bar HRB400E |
| CN103898403A (en) * | 2014-04-09 | 2014-07-02 | 武汉钢铁(集团)公司 | HRB500 hot-rolled belt rib antiseismic steel bar and preparation method thereof |
| CN105018839A (en) * | 2015-08-14 | 2015-11-04 | 武钢集团昆明钢铁股份有限公司 | 420 MPa grade high-performance anti-shock H-type steel and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 杨怀春 等: "钢强化剂在HRB400E钢中的应用", 《新疆钢铁》 * |
| 阿不力克木·亚森: "Si-Ca-Ba复合脱氧剂在炼钢生产中的应用", 《新疆钢铁》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410507A (en) * | 2019-08-23 | 2021-02-26 | 江苏集萃冶金技术研究院有限公司 | Manufacturing method of resource-saving HRB400 high-strength steel bar |
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Application publication date: 20181023 |
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