CN105543667A - Corrosion-resistant reinforcing bar - Google Patents
Corrosion-resistant reinforcing bar Download PDFInfo
- Publication number
- CN105543667A CN105543667A CN201610036568.8A CN201610036568A CN105543667A CN 105543667 A CN105543667 A CN 105543667A CN 201610036568 A CN201610036568 A CN 201610036568A CN 105543667 A CN105543667 A CN 105543667A
- Authority
- CN
- China
- Prior art keywords
- corrosion
- reinforcing bar
- steel
- resistant reinforcing
- steel bar
- 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.)
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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
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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
- C22C38/04—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
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a corrosion-resistant reinforcing bar and relates to the technical field of construction materials. The corrosion-resistant reinforcing bar comprises the following chemical components in percentage by weight: 0.18-0.24% of C, 0.35-0.5% of Si, 1.2-1.5% of Mn, less than or equal to 0.02 of S, less than or equal 0.02% of P, less than or equal to 1% of Cu, 0.04-0.1% of V, 0.01-0.04% of Nb and the balance being Fe and inevitable impurities. The corrosion-resistant reinforcing bar solves the problem that a conventional reinforcing bar has relatively low corrosion resistance.
Description
Technical field
The present invention relates to building material technical field, especially a kind of corrosion-resistant steel bar.
Background technology
Steel Concrete refers to allocates reinforcing bar into improve a kind of component building material of Concrete Mechanical Properties in concrete, and Steel Concrete is because its material source is extensive, cost is low and fastening durable advantage and being widely used in modern construction work.In existing concrete building structures, the corrosion phenomena of reinforcing bar constantly occurs, can cause damage to concrete structure, because when after steel bar corrosion after steel bar corrosion, the mechanical properties decrease of reinforcing bar, section loss, and erosion can make the bonding force between reinforcing bar and concrete decline, thus cause the supporting capacity of concrete member to reduce, simultaneously, erosion extruded concrete, causes concrete cracking, has had a strong impact on security and the work-ing life of buildings.The corrosion resistance nature of existing reinforcing bar is lower, easy rust corrosion, produces potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of corrosion-resistant steel bar, it can solve the lower problem of existing reinforcing bar corrosion resistance nature.
In order to solve the problem, the technical solution used in the present invention is: a kind of corrosion-resistant steel bar comprises the chemical composition of following mass percentage: C0.18-0.24%, Si0.35-0.5%, Mn1.2-1.5%, S≤0.02%, P≤0.02%, Cu≤1%, V0.04-0.1%, Nb0.01-0.04%, all the other are Fe and inevitable impurity.
In the technical scheme of above-mentioned corrosion-resistant steel bar, technical scheme can also be more specifically: C0.22%, Si0.45%, Mn1.38%, S0.005%, P0.005%, Cu0.86%, V0.068%, Nb0.032%, and all the other are Fe and inevitable impurity.
Further, C0.18%, Si0.35%, Mn1.2%, S0.01%, P0.008%, Cu0.36%, V0.1%, Nb0.01%, all the other are Fe and inevitable impurity.
Further, C0.24%, Si0.5%, Mn1.5%, S0.015%, P0.01%, Cu0.72%, V0.04%, Nb0.04%, all the other are Fe and inevitable impurity.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect: the effect of being significantly improved of the corrosion resistance nature of Cu to steel, because it can form fine and close protective layer on the surface of steel, reduce erosion rate, and the content of control Cu is below 1%, then its content can be avoided high and affect the mechanical property of steel; C content is low, under the prerequisite ensureing reinforced steel bar strength, improve plasticity; Mn, Si significantly can increase the intensity of steel, control Mn content, and steel plasticity can be avoided to reduce; Control S, P content, effectively can avoid the reduction of steel mechanics performance and corrosion resistance nature; Adopt V, Nb combined microalloying, there is very strong precipitation strength effect, the intensity of reinforcing bar can be improved further, and make it to keep good toughness; The yield strength of reinforcing bar brings up to more than 620MPa, and tensile strength is at more than 750MPa, and elongation is greater than 12%, and erosion rate is 0.685-0.829g/m
2h.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail:
Embodiment 1
The corrosion-resistant steel bar of the present embodiment comprises the chemical composition of following mass percentage: C0.22%, Si0.45%, Mn1.38%, S0.005%, P0.005%, Cu0.86%, V0.068%, Nb0.032%, and all the other are Fe and inevitable impurity.
During preparation, comprise following production stage: the chemical composition of above-mentioned mass percentage is added smelting molten steel in converter, the mass percent of control P, S, in the setting range of mass percent, carries out refining at the outer ladle argon-blown gas of stove before tapping; Molten steel is tapped, and carry out blowing argon gas stirring, continuous casting becomes billet, is sent in process furnace by steel billet and heats, and after steel billet goes out process furnace, carries out dephosphorize by high pressure water; Be rolled and obtain reinforcing bar, roll rear Water cooling, after cooling, temperature on cooling table is 600 DEG C.
The performance of the present embodiment corrosion-resistant steel bar is as follows: yield strength 695MPa, and tensile strength is at 778MPa, and elongation 14.8%, erosion rate is 0.685g/m
2h.
Embodiment 2
The corrosion-resistant steel bar of the present embodiment comprises the chemical composition of following mass percentage: C0.18%, Si0.35%, Mn1.2%, S0.01%, P0.008%, Cu0.36%, V0.1%, Nb0.01%, and all the other are Fe and inevitable impurity.
During preparation, comprise following production stage: the chemical composition of above-mentioned mass percentage is added smelting molten steel in converter, the mass percent of control P, S, in the setting range of mass percent, carries out refining at the outer ladle argon-blown gas of stove before tapping; Molten steel is tapped, and carry out blowing argon gas stirring, continuous casting becomes billet, is sent in process furnace by steel billet and heats, and after steel billet goes out process furnace, carries out dephosphorize by high pressure water; Be rolled and obtain reinforcing bar, roll rear Water cooling, after cooling, temperature on cooling table is 580 DEG C.
The performance of the present embodiment corrosion-resistant steel bar is as follows: yield strength 672MPa, and tensile strength is at 773MPa, and elongation 13.5%, erosion rate is 0.785g/m
2h.
Embodiment 3
The corrosion-resistant steel bar of the present embodiment comprises the chemical composition of following mass percentage: C0.24%, Si0.5%, Mn1.5%, S0.015%, P0.01%, Cu0.72%, V0.04%, Nb0.04%, and all the other are Fe and inevitable impurity.
During preparation, comprise following production stage: the chemical composition of above-mentioned mass percentage is added smelting molten steel in converter, the mass percent of control P, S, in the setting range of mass percent, carries out refining at the outer ladle argon-blown gas of stove before tapping; Molten steel is tapped, and carry out blowing argon gas stirring, continuous casting becomes billet, is sent in process furnace by steel billet and heats, and after steel billet goes out process furnace, carries out dephosphorize by high pressure water; Be rolled and obtain reinforcing bar, roll rear Water cooling, after cooling, temperature on cooling table is 610 DEG C.
The performance of the present embodiment corrosion-resistant steel bar is as follows: yield strength 623MPa, and tensile strength is at 752MPa, and elongation 12.7%, erosion rate is 0.829g/m
2h.
Claims (4)
1. a corrosion-resistant steel bar, is characterized in that the chemical composition comprising following mass percentage: C0.18-0.24%, Si0.35-0.5%, Mn1.2-1.5%, S≤0.02%, P≤0.02%, Cu≤1%, V0.04-0.1%, Nb0.01-0.04%, all the other are Fe and inevitable impurity.
2. corrosion-resistant steel bar according to claim 1, is characterized in that: C0.22%, Si0.45%, Mn1.38%, S0.005%, P0.005%, Cu0.86%, V0.068%, Nb0.032%, and all the other are Fe and inevitable impurity.
3. corrosion-resistant steel bar according to claim 1, is characterized in that: C0.18%, Si0.35%, Mn1.2%, S0.01%, P0.008%, Cu0.36%, V0.1%, Nb0.01%, and all the other are Fe and inevitable impurity.
4. corrosion-resistant steel bar according to claim 1, is characterized in that: C0.24%, Si0.5%, Mn1.5%, S0.015%, P0.01%, Cu0.72%, V0.04%, Nb0.04%, and all the other are Fe and inevitable impurity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036568.8A CN105543667A (en) | 2016-01-20 | 2016-01-20 | Corrosion-resistant reinforcing bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610036568.8A CN105543667A (en) | 2016-01-20 | 2016-01-20 | Corrosion-resistant reinforcing bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105543667A true CN105543667A (en) | 2016-05-04 |
Family
ID=55823219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610036568.8A Pending CN105543667A (en) | 2016-01-20 | 2016-01-20 | Corrosion-resistant reinforcing bar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105543667A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266962A (en) * | 2018-09-30 | 2019-01-25 | 舞阳钢铁有限责任公司 | A kind of corrosion resistance wind-power tower steel plate and its production method |
| CN110565021A (en) * | 2019-10-10 | 2019-12-13 | 阳春新钢铁有限责任公司 | optimization method of hot-rolled ribbed steel bar production process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534390A (en) * | 2011-12-15 | 2012-07-04 | 江苏省沙钢钢铁研究院有限公司 | Corrosion-resistant twisted steel and production method thereof |
| CN103451525A (en) * | 2013-09-10 | 2013-12-18 | 武汉钢铁(集团)公司 | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof |
-
2016
- 2016-01-20 CN CN201610036568.8A patent/CN105543667A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102534390A (en) * | 2011-12-15 | 2012-07-04 | 江苏省沙钢钢铁研究院有限公司 | Corrosion-resistant twisted steel and production method thereof |
| CN103451525A (en) * | 2013-09-10 | 2013-12-18 | 武汉钢铁(集团)公司 | Corrosion-resistant hot-rolled ribbed steel bar with yield strength not less than 600Mpa and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109266962A (en) * | 2018-09-30 | 2019-01-25 | 舞阳钢铁有限责任公司 | A kind of corrosion resistance wind-power tower steel plate and its production method |
| CN110565021A (en) * | 2019-10-10 | 2019-12-13 | 阳春新钢铁有限责任公司 | optimization method of hot-rolled ribbed steel bar production process |
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Application publication date: 20160504 |
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