CN109023041A - 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method - Google Patents
400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method Download PDFInfo
- Publication number
- CN109023041A CN109023041A CN201810822190.3A CN201810822190A CN109023041A CN 109023041 A CN109023041 A CN 109023041A CN 201810822190 A CN201810822190 A CN 201810822190A CN 109023041 A CN109023041 A CN 109023041A
- Authority
- CN
- China
- Prior art keywords
- reinforcing bar
- chlorine ion
- steel
- antidetonation anti
- ion corrosion
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- 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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- 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
- C21C5/35—Blowing from above and through the bath
-
- 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
- C21C5/36—Processes yielding slags of special composition
-
- 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
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The present invention relates to a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar and its manufacturing methods, wherein, 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars, by weight percentage chemical composition content are as follows: C:0.13~0.18%, Si:0.20~0.60%, Mn:0.95~2.0%, Cu:0.10~12.0%, Cr:0.20~2.50%, Ni:0.0~2.0%, V:0.0~2.8%, RE:0.0~2.0%, surplus are Fe and inevitable impurity element.The reinforcing bar has the advantages that the good corrosion resistance of reinforcing bar, further improves the intensity and service life of reinforcing bar.
Description
Technical field
The present invention relates to metallurgical technology field, in particular to a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar and
The manufacturing method of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars.
Background technique
A large amount of reinforced concrete structure be applied to using villaumite as the corrosive environment of main medium, as ocean, salt lake,
The artificial chlorine salt corrosion environment such as road, the bridge of the nature chlorine salt corrosion environment such as salt-soda soil and spreading cryosel, in such ring
In border, concrete reinforcing bars corrosion will cause, there are many corrosion factor, and the mechanism of corrosion is also not quite similar, and are generally divided into electrochemistry
Three kinds of forms of burn into chemical attack and stress corrosion.Concrete reinforcing bars will cause concrete and open after chloride ion corrosion
It splits, reduce reinforcing bar and concrete bonds cohesive force.
Volume will increase 2~10 times after reinforcement corrosion, generates pressure to surrounding concrete, concrete will be made along reinforcing bar direction
Cracking, and then make protective layer fall in flakes, and the peeling of crack and protective layer can further result in more violent corrosion, change
Structural stress state and the durability for reducing structure.In chloride environment, after excessive erosion, surface will form loose reinforcing bar
The corrosion products such as chloride and oxide form one layer of loose separation layer on rebar surface, to reduce reinforcing bar and concrete
Between cementation；It will be expanded after reinforcement corrosion, concrete gradually weakens the effect of contraction of reinforcing bar；Table after reinforcement corrosion
The rib in face will gradually become smaller, and the mechanical snap effect after heavy corrosion between reinforcing bar and concrete will disappear.Armored concrete
Reinforcing bar and concrete are collective effects, mutually transmit stress in structure, after force-mechanism destroys, will accelerate coagulation soil cracking
The extension of seam.
The corrosion resistance of reinforcing bar has become the project that industrialized country is mainly studied, the various corrosion-resistant steel bars of high life,
The use scope of weather-proof reinforcing bar expands increasingly, in order to solve the etching problem and market trend of reinforcement in concrete, urgently
It needs to develop high-strength corrosion-resistant steel bar.
Summary of the invention
In view of this, the present invention provides a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar and 400MPa grades of antidetonation chlorine-resistant
The manufacturing method of ion etching reinforcing bar.
The present invention provides a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar, and chemical component contains by weight percentage
Amount are as follows: C:0.13~0.18%, Si:0.20~0.60%, Mn:0.95~2.0%, Cu:0.10~12.0%, Cr:0.20~
2.50%, Ni:0.0~2.0%, V:0.0~2.8%, RE:0.0~2.0%, surplus are Fe and inevitable impurity element.
The present invention also provides a kind of manufacturing methods of above-mentioned reinforcing bar, comprising: desulfurizing iron: using the desulfurization of KR method, desulfurizing agent
Be based on lime stone, then be incorporated a little fluorite, aluminium be fluxing agent；Combined blown converter is smelted: using single-slag practice, finishing slag basicity is pressed
3.0 controls, converter use low catch carbon technique, and converter terminal controls target C and is not more than 0.06%, and tapping temperature control is not less than
1630℃；LF refining: manganese iron, manganese metal, low-carbon ferrochromium, molybdenum-iron, nickel plate alloying are used, final deoxidizing, which uses, aluminium deoxidation；Even
Casting: molten steel is cast under a shielding gas, and for casting speed control in 2.3~2.5m/min, Continuous Casting Secondary Cooling is cooling using weak cold, and
Continuous casting billet is obtained with permanent pulling rate, slab heating temperature is controlled at 1100~1200 DEG C, 1050~1150 DEG C of steel billet tapping temperature, opened
950~1050 DEG C of temperature are rolled, 900~950 DEG C of finishing temperature, deflection is 11~20% to steel billet per pass, total deformation 11
~35%.
Further, in the LF refining, denaturant is added to molten steel.
Further, in the continuous casting process, rolling cooling procedure cannot wear water.
Compared with the existing technology, the 400MPa grade antidetonation anti-chlorine ion corrosion reinforcing bar prepared according to the method provided by the invention
The good corrosion resistance for having the advantages that reinforcing bar further improves the intensity and service life of reinforcing bar.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 shows 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar metallographic structure according to an embodiment of the invention
Photo.
Specific embodiment
The invention discloses a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar and its manufacturing method, those skilled in the art
Member can use for reference present disclosure, be suitably modified realization of process parameters.In particular, it should be pointed out that all similar substitutions and modifications
Apparent to those skilled in the art, they are considered as being included in the present invention.Method and application of the invention
Be described by preferred embodiment, related personnel obviously can not depart from the content of present invention, in spirit and scope it is right
Method described herein and application are modified or appropriate changes and combinations, carry out implementation and application the technology of the present invention.
The present invention provides a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar, and chemical component contains by weight percentage
Amount are as follows: C:0.13~0.18%, Si:0.20~0.60%, Mn:0.95~2.0%, Cu:0.10~12.0%, Cr:0.20~
2.50%, Ni:0.0~2.0%, V:0.0~2.8%, RE:0.0~2.0%, surplus are Fe and inevitable impurity element.
The yield strength R of the reinforcing bar after rollingp0.2>=400MPa, tensile strength Rm>=600MPa, elongation percentage A >=16%, by force
It bends and compares Rm 0/ReL 0>=1.25, mark in the wrong compares ReL 0/ReL≤1.30.Since the most effective alloying element for the oxidation resistance for improving steel is
Chromium, silicon and aluminium, but silicon in steel, aluminium mass fraction it is more when steel become fragile, therefore in anti-chlorine ion corrosion reinforcing bar, Cr is added
Element enables steel to form one layer of complete, fine and close and stable protective oxide layer on the surface of steel, to improve the antioxygen of steel
Change ability.The intensity of solid solution and cold work hardening degree in steel, which can be improved, in silicon reduces the toughness of steel and plasticity, and can be significant
Ground improves elastic limit, yield limit and the yield tensile ratio of steel, and when the steel containing silicon heats in oxidizing atmosphere, surface will also be formed
One layer of SiO2Film plays the role of corrosion resistant to improve the inoxidizability of steel at high temperature.Nickel the intensity of steel can be improved and
Do not significantly reduce its toughness, reduce the brittle transition temperature of steel, that is, the low-temperature flexibility of steel can be improved, improve steel processability and can
Weldering property, improves the resistance to corrosion of steel, can not only be acidproof, and the corrosion of energy alkali resistant and atmosphere.Vanadium has very heat-flash epistasis, can show
Landing improves the welding performance of common low carbon low-alloy steel.Correspondingly, the present invention also provides a kind of manufacturing method of above-mentioned reinforcing bar,
Include: desulfurizing iron: use the desulfurization of KR method, desulfurizing agent be based on lime stone, then be incorporated a little fluorite, aluminium be fluxing agent；It is multiple
Blow converter is smelted: using single-slag practice, for finishing slag basicity by 3.0 controls, converter uses low catch carbon technique, and converter terminal controls target
C is not more than 0.06%, and tapping temperature control is not less than 1630 DEG C；LF refining: using manganese iron, manganese metal, low-carbon ferrochromium, molybdenum-iron,
Nickel plate alloying, final deoxidizing, which uses, aluminium deoxidation；Continuous casting: molten steel is cast under a shielding gas, and casting speed control is in 2.3~2.5m/
Min, Continuous Casting Secondary Cooling is cooling using weak cold, and obtains continuous casting billet with permanent pulling rate, slab heating temperature control 1100~
1200 DEG C, 1050~1150 DEG C of steel billet tapping temperature, 950~1050 DEG C of start rolling temperature, 900~950 DEG C of finishing temperature, steel billet is every
Pass deformation is 11~20%, and total deformation is 11~35%.
Further, in the LF refining, denaturant is added to molten steel.
Further, in the continuous casting process, rolling cooling procedure cannot wear water.
Desulfurizing iron use the desulfurization of KR method, desulfurizing agent be based on lime stone, then be incorporated a little fluorite, aluminium be fluxing agent.
Converter is smelted using combined blown converter, and using single-slag practice, finishing slag basicity is by 3.0 controls, for the lower tapping phosphorus of guarantee, suitably
Tapping temperature and metastable tapping carbon, converter use low catch carbon technique, and converter terminal controls target C and is not more than 0.06%,
Tapping temperature control is not less than 1630 DEG C.Refining uses manganese iron, manganese metal, low-carbon ferrochromium, molybdenum-iron, nickel plate alloying, final deoxidizing
Using there is aluminium deoxidation.Influence of the nonmetallic inclusionsin steel to the corrosion resistance of steel is bigger, and molten steel need to be added in LF refining
Some denaturants, rare earth alloy, which is added, in the production of this atmospheric corrosion resistance reinforcing bar makes non-metallic inclusion be denaturalized nodularization, disappears
Their adverse effects to rigidity matter are removed or reduced, to purify steel, total inclusion content is reduced, connects field trash with steel matrix
Corrosion between contacting surface is reduced.Non-metallic inclusion quantity is more, and particle is larger to generate baneful influence to steel, so must incite somebody to action
Corrosion rate in steel big be mingled with (MnS) be denaturalized and is mingled with for corrosion rate is small, so that it is electric to reduce steel matrix inside film micro area
Chemical attack.Continuous casting steel is cast under a shielding gas, and casting speed control is in 2.3~2.5m/min, due to the addition of alloy, continuous casting
Two cold water distributions are cooling using weak cold, prevent slab from face crack, internal flaw occur, while guaranteeing that permanent pulling rate obtains continuous casting as far as possible
Base.
Slab heating temperature control at 1100~1200 DEG C, 1050~1150 DEG C of steel billet tapping temperature, start rolling temperature 950~
1050 DEG C, 900~950 DEG C of finishing temperature, deflection is 11~20% to steel billet per pass, and total deformation is 11~35%.To protect
The good mechanical property of product is demonstrate,proved, rolling cooling procedure must not wear water, mainly since alloying element content is more, greatly increase
The harden ability of steel is added, has such as carried out Water cooling in preparation process, be easy to get quenching structure, reduce plastic property of reinforcement rebar and welding
Performance.
Compared with the existing technology, the 400MPa grade antidetonation anti-chlorine ion corrosion reinforcing bar prepared according to the method provided by the invention
The good corrosion resistance for having the advantages that reinforcing bar further improves the intensity and service life of reinforcing bar.
Below with reference to embodiment, the present invention is further explained:
Embodiment 1
The chemical component of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars is as shown in table 1 in this example.The reinforcing bar it is main
Preparation process are as follows: desulfurizing iron-converter-LF refining-continuous casting-rolling.Desulfurizing iron: removing blast furnace slag before desulfurization, to mention
High desulfurization efficiency；Taking iron ore melting is molten iron, and molten iron uses the desulfurization of KR method, i.e., uses revolving speed for 90r/min the molten iron
Stirring paddle stirring, stir 2min after, be added desulfurizing agent, desulfurizing agent be 9:1 mass ratio mix pulverized limestone and fluorite, stirring
10min is reacted, 5min is stood.Desulfurizing iron removes desulfurization slag after standing, and stably desulphurizing effect prevents desulfurization slag from entering converter and makes
Sulphur is returned at converter, guarantees that sulfur content control is below 0.01% in steel.Converter: using top and bottom complex blowing carry out decarburization, dephosphorization, 1650
Carbon content is smelted into molten steel at DEG C to tap lower than 0.05%, phosphorus content lower than 0.01%, and protective gas is used in tapping process
Molten steel is stirred with the pressure of 0.5MPa, ferrosilicon, silicomangan deoxidation is added when carrying out to 1/4 in tapping, carbon dust and slag material is added,
A large amount of slags are prevented when tapping, meanwhile, the protective gas pressure is gradually reduced with tap.Refining: using LF external refining,
Deoxidation oxygen content into molten steel is 0.002% at 1575 DEG C, the alloying element of manganese iron, nickel plate and ferrochrome, vanadium is added, refining terminates
Ca-Fe alloy line is fed afterwards, while guaranteeing the soft blow time not less than 10min.Continuous casting: guarantee that permanent pulling rate carries out drawing steel, pulling rate control as far as possible
For system in 2.3m/min, casting blank section is 150mm × 150mm, and slab length is 11.5m.Rolling: specific rolling mill practice such as 2 institute of table
Show, continuous casting billet is heated to 1200 DEG C, comes out of the stove 1200 DEG C of thermometric or so, rolled after high-pressure water descaling, rolling temperature 1050
± 20 DEG C, through roughing, in roll after, control 950 ± 20 DEG C of finishing temperature, reinforcing bar not can be carried out in the operation of rolling and wear water, then
Upper cold bed, into finishing, bundling process.
After offline to reinforcing bar examine mechanical property, metallurgical tissue picture as shown in Figure 1, mechanical property the results are shown in Table 3,
Detection method is carried out referring to " GB1499.2-2007 concrete reinforcement steel second part: hot rolled ribbed bars ".Referring to national standard
Bending and reverse bending test method regulation are tested in " GB/T33953-2017 armored concrete corrosion resistant steel bar ", positive
Bending observes rebar surface for after 180 ° of bar bending, does not find obvious macroscopic crackle.Back-flexing be by reinforcing bar just
To 90-degree bent, 30min then is kept the temperature in 100 ± 20 DEG C of heating furnace, reverse bending test is carried out after natural cooling, then
To 20 ° of back-flexing, rebar surface is observed after the test, to find obvious macroscopic crackle.
Corrosion resisting property test: week, leaching corrosion test was referring to YB/T4368-2014 " reinforcing bar corrosion test in chloride environment
Method " it carries out.Sample is the cylinder of 18mm × 50mm, and testing liquid is that initial concentration is (0.34 ± 0.009) mol/L (quality
Score be 2.0% ± 0.05%) sodium chloride solution.Specific experimental condition are as follows: temperature: 45 DEG C ± 2 DEG C；Humidity: 70% ±
10%RH；Test period: 168h；Each cycle period；60min±2min；Wherein infiltrating time: 12min ± 2min；After baking
Specimen surface maximum temperature: 70 DEG C ± 10 DEG C, the results are shown in Table 4 for corrosion resistance test.
The chemical component of 1 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar of table
The rolling mill practice of 2 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar of table
| Process program | Tapping temperature/DEG C | Start rolling temperature/DEG C | Enter final rolling temperature/DEG C | Finishing temperature/DEG C |
| Before technique | 1200±20 | 1050±20 | 1050±20 | 950±20 |
The mechanical property result of 3 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar of table
| Number | Rp0.2/MPa | Rm/MPa | A% | Z% | Rm 0/ReL 0 | ReL 0/ReL |
| 1-1 | 477 | 623 | 25.0 | 70 | 1.30 | 1.19 |
| 1-2 | 487 | 628 | 27.0 | 68 | 1.29 | 1.22 |
| 1-3 | 484 | 627 | 26.0 | 69 | 1.30 | 1.21 |
| 1-4 | 485 | 627 | 25.0 | 66 | 1.29 | 1.21 |
4 corrosion resistance test result of table
| Number | Corrosion rate (g/m2·h) | Relatively corrosive rate |
| HRB400 | 4.795 | 1.00 |
| Compare sample 1 | 3.064 | 0.64 |
As shown in the above, the 400MPa grade antidetonation anti-chlorine ion corrosion reinforcing bar of method preparation provided by the invention has
Following advantage: the good corrosion resistance of reinforcing bar further improves the intensity and service life of reinforcing bar.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar, which is characterized in that chemical composition content by weight percentage
Are as follows: C:0.13~0.18%, Si:0.20~0.60%, Mn:0.95~2.0%, Cu:0.10~12.0%, Cr:0.20~
2.50%, Ni:0.0~2.0%, V:0.0~2.8%, RE:0.0~2.0%, surplus are Fe and inevitable impurity element.
2. the manufacturing method of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar described in claim 1 characterized by comprising
Desulfurizing iron: use the desulfurization of KR method, desulfurizing agent be based on lime stone, then be incorporated a little fluorite, aluminium be fluxing agent；
Combined blown converter is smelted: using single-slag practice, finishing slag basicity uses low catch carbon technique, converter terminal control by 3.0 controls, converter
Target C processed is not more than 0.06%, and tapping temperature control is not less than 1630 DEG C；
LF refining: manganese iron, manganese metal, low-carbon ferrochromium, molybdenum-iron, nickel plate alloying are used, final deoxidizing, which uses, aluminium deoxidation；
Continuous casting: molten steel is cast under a shielding gas, and for casting speed control in 2.3~2.5m/min, Continuous Casting Secondary Cooling is cold using weak cold
But, and with permanent pulling rate obtain continuous casting billet, slab heating temperature control at 1100~1200 DEG C, steel billet tapping temperature 1050~
1150 DEG C, 950~1050 DEG C of start rolling temperature, 900~950 DEG C of finishing temperature, deflection is 11~20% to steel billet per pass, total to become
Shape amount is 11~35%.
3. the manufacturing method of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar according to claim 2, which is characterized in that institute
It states in LF refining, denaturant is added in molten steel.
4. the manufacturing method of 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bar according to claim 2, which is characterized in that institute
It states in continuous casting process, rolling cooling procedure cannot wear water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810822190.3A CN109023041A (en) | 2018-07-24 | 2018-07-24 | 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810822190.3A CN109023041A (en) | 2018-07-24 | 2018-07-24 | 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109023041A true CN109023041A (en) | 2018-12-18 |
Family
ID=64644788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810822190.3A Withdrawn CN109023041A (en) | 2018-07-24 | 2018-07-24 | 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109023041A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029281A (en) * | 2019-05-29 | 2019-07-19 | 包头钢铁（集团）有限责任公司 | A kind of Nb-microalloying fine grain HRB400 reinforcing bar and preparation method thereof |
| CN110453136A (en) * | 2019-09-11 | 2019-11-15 | 莱芜泰铼经贸有限公司 | A kind of hot rolling antirust reinforcing bar and its production method |
| CN110983188A (en) * | 2019-12-26 | 2020-04-10 | 福建三宝钢铁有限公司 | Marine atmosphere corrosion resistant steel bar and production process thereof |
| CN112662948A (en) * | 2020-12-09 | 2021-04-16 | 本钢板材股份有限公司 | RE-Cr-Cu composite corrosion-resistant steel and preparation method thereof |
| CN113073256A (en) * | 2021-03-11 | 2021-07-06 | 本钢板材股份有限公司 | Rare earth corrosion-resistant steel plate and preparation method thereof |
| CN113278869A (en) * | 2021-05-07 | 2021-08-20 | 石横特钢集团有限公司 | Smelting process and production method of blank for atmospheric corrosion resistant steel bar |
| CN113930655A (en) * | 2021-09-01 | 2022-01-14 | 包头钢铁（集团）有限责任公司 | Method for producing high-strength weather-resistant 310B-shaped steel by using square billet with thickness of 280mm multiplied by 380mm |
| CN114703423A (en) * | 2022-03-30 | 2022-07-05 | 江苏永钢集团有限公司 | Production method of rare earth reinforcing steel bar |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534381A (en) * | 2011-12-30 | 2012-07-04 | 中国科学院金属研究所 | All-weather low-cost weathering steel |
| CN106756518A (en) * | 2017-02-24 | 2017-05-31 | 河钢股份有限公司承德分公司 | A kind of 500MPa grades of corrosion-resistant steel bar and production method |
| CN107034418A (en) * | 2017-06-01 | 2017-08-11 | 马鞍山钢铁股份有限公司 | A kind of concrete 400MPa grades of anti-chlorine ion corrosion high tensile reinforcements and its production method |
| CN108286026A (en) * | 2018-01-17 | 2018-07-17 | 福建三宝钢铁有限公司 | A kind of An industrial atmospheric corrosion resistant rebar and preparation method thereof |
-
2018
- 2018-07-24 CN CN201810822190.3A patent/CN109023041A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534381A (en) * | 2011-12-30 | 2012-07-04 | 中国科学院金属研究所 | All-weather low-cost weathering steel |
| CN106756518A (en) * | 2017-02-24 | 2017-05-31 | 河钢股份有限公司承德分公司 | A kind of 500MPa grades of corrosion-resistant steel bar and production method |
| CN107034418A (en) * | 2017-06-01 | 2017-08-11 | 马鞍山钢铁股份有限公司 | A kind of concrete 400MPa grades of anti-chlorine ion corrosion high tensile reinforcements and its production method |
| CN108286026A (en) * | 2018-01-17 | 2018-07-17 | 福建三宝钢铁有限公司 | A kind of An industrial atmospheric corrosion resistant rebar and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110029281A (en) * | 2019-05-29 | 2019-07-19 | 包头钢铁（集团）有限责任公司 | A kind of Nb-microalloying fine grain HRB400 reinforcing bar and preparation method thereof |
| CN110453136A (en) * | 2019-09-11 | 2019-11-15 | 莱芜泰铼经贸有限公司 | A kind of hot rolling antirust reinforcing bar and its production method |
| CN110983188A (en) * | 2019-12-26 | 2020-04-10 | 福建三宝钢铁有限公司 | Marine atmosphere corrosion resistant steel bar and production process thereof |
| CN110983188B (en) * | 2019-12-26 | 2021-01-29 | 福建三宝钢铁有限公司 | Marine atmosphere corrosion resistant steel bar and production process thereof |
| CN112662948A (en) * | 2020-12-09 | 2021-04-16 | 本钢板材股份有限公司 | RE-Cr-Cu composite corrosion-resistant steel and preparation method thereof |
| CN113073256A (en) * | 2021-03-11 | 2021-07-06 | 本钢板材股份有限公司 | Rare earth corrosion-resistant steel plate and preparation method thereof |
| CN113278869A (en) * | 2021-05-07 | 2021-08-20 | 石横特钢集团有限公司 | Smelting process and production method of blank for atmospheric corrosion resistant steel bar |
| CN113930655A (en) * | 2021-09-01 | 2022-01-14 | 包头钢铁（集团）有限责任公司 | Method for producing high-strength weather-resistant 310B-shaped steel by using square billet with thickness of 280mm multiplied by 380mm |
| CN114703423A (en) * | 2022-03-30 | 2022-07-05 | 江苏永钢集团有限公司 | Production method of rare earth reinforcing steel bar |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109023041A (en) | 400MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method | |
| CN109023042A (en) | 500MPa grades of antidetonation anti-chlorine ion corrosion reinforcing bars and its manufacturing method | |
| AU2020294457A1 (en) | Large-thickness lamellar tearing-resistant high-strength steel plate with 960 MPa-level yield strength, and production method therefor | |
| EP3159424B1 (en) | Rebar and preparation method thereof | |
| CN108754334A (en) | 500MPa grades of antidetonation atmospheric corrosion resistance reinforcing bars and its manufacturing method | |
| CN109023040A (en) | 400MPa grades of antidetonation atmospheric corrosion resistance reinforcing bars and its manufacturing method | |
| CN112375995B (en) | 400 MPa-grade corrosion-resistant steel bar and production method thereof | |
| CN101613840B (en) | Super-thick steel plate with obdurability matching and excellent high-temperature performance and manufacturing method thereof | |
| CN100462466C (en) | Method of producing low-temperature high-toughness steel and steel plate | |
| CN100516274C (en) | 03Cr22Ni4NbN austenite-ferritic stainless steel and production technology therefor | |
| CN101200790A (en) | Oil-gas transportation large-scale high-pressure pipe fittings steel as well as pipes, pipe fittings and welding materials produced thereby | |
| CN103966515B (en) | A kind of method utilizing electric arc furnace to prepare low-alloy high-strength toughness cast steel adding | |
| RU2765963C1 (en) | Acid- and corrosion-resistant steel for pipeline with large wall thickness and method of production thereof | |
| CN102080185A (en) | High-tensile quenched and tempered steel plate for large-thickness structures and production method thereof | |
| CN109402510A (en) | A kind of resistance to anti-H that extremely trembles with fear2S corrodes welded tube hot rolled strip and its manufacturing method | |
| CN109082601A (en) | A kind of acid-resisting corrosion X70MS line steel hot rolling roll bending and its manufacturing method | |
| CN106555123A (en) | Corrosion-resistant high-strength-to-yield-ratio anti-seismic reinforcing steel bar and production method thereof | |
| CN103981449A (en) | Method for manufacturing low-alloy high-ductility wear-resistant cast steel by utilizing electric arc furnace | |
| CN107829024A (en) | Ultrahigh-strength weather-resistant steel plate with more than 700MPa level and hot continuous rolling production method thereof | |
| CN107868900A (en) | A kind of ultralow phosphorus faces the production method of hydrogen steel | |
| CN100523254C (en) | Soldering not quenching and tempering steel plate in high intensity by large line energy, and manufacturing method | |
| CN109881121A (en) | Chloride ion corrosion-resistant high-strength anti-seismic reinforcing steel bar and production method and application thereof | |
| CN104946996B (en) | A kind of high strength steel and its production method of alkali resistance corrosion | |
| CN108588581A (en) | A kind of marine concrete structure high strength anti-corrosion ferrite/bainite two-phase reinforcing bar and preparation method thereof | |
| JP5708349B2 (en) | Steel with excellent weld heat affected zone toughness |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181218 |