CN109576433A - A kind of V-Ti composite alloy reinforcing hot rolled ribbed bars processing method - Google Patents
A kind of V-Ti composite alloy reinforcing hot rolled ribbed bars processing method Download PDFInfo
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/005—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides comprising a particular metallic binder
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
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- 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
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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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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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
- 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
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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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
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Abstract
The invention discloses a kind of V-Ti composite alloys to strengthen hot rolled ribbed bars processing method, the method is specific as follows: step 1: titanium nitride alloying ingredient, the nitridation titanium alloy component includes Si:17-20%, Mn:2-5%, N:10-20%, Ti:20-30%, surplus are Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet；Step 2: the control standard of composite alloy ingredient, step 3: composite alloy processing, (1) converter procedure, (2) refining procedure, refining ladle bottom blowing whole process uses argon gas, molten steel is added in refining furnace after entering the station and nitrogenizes titanium alloy 0.8Kg/t, nitrogenizes necessary whole packet when titanium alloy packet is added and is added, oxygen is determined in energization temperature raising, then carbon, silicon, manganese, vanadium, titanium composition are finely tuned, calcium line 150m, 4 ~ 5m/s of feeding wire speed, soft blow 5min are fed after composition is qualified；(3) continuous casting working procedure.V-Ti composite alloy of the invention strengthens hot rolled ribbed bars processing method, and while meeting steel performance, cost of implementation is optimal.
Description
Technical field
The present invention relates to a kind of hot rolled ribbed bars processing methods, and in particular to a kind of V-Ti composite alloy reinforcing hot-rolled strip
Rib reinforcement processing method belongs to hot rolled ribbed bars processing method technical field.
Background technique
Micro alloyed steel, which is primarily referred to as certain element that addition minimal amount is either micro in steel, can significantly improve performance
Steel, increase nitrogen in micro alloyed steel in early days, be to be realized by the nitridation class alloy of addition 3%~6%, but due to nitrogenizing
Class alloy is nitrogenous very low, causes alloy addition big, and recovery rate is unstable, gradually by nitrogen content higher alloy of vanadium nitride generation
It replaces；Almost it is difficult to reuse 3%~6% nitridation class alloy in the micro alloyed steel production of the prior art, almost all use is
Containing vanadium and nitrogen content high alloy of vanadium nitride again；Alloy of vanadium nitride mainly has tri- trades mark of VN12, VN14 and VN16；General feelings
The ratio of three trade mark nitrogen and vanadium is substantially stationary, respectively 12:78 (N:V) under condition；14:78 (N:V)；16:78 (N:
V), i.e. the ratio of nitrogen and vanadium is up to the 16:78 of VN16, i.e., in alloy containing 16% N, contain 78% vanadium；Alloy of vanadium nitride
Although not only containing vanadium and nitrogen content but also high, for micro-alloying technology route different in micro alloyed steel, especially compound micro- conjunction
Jin Gang, such as V-Ti-N, even V-Ti-Nb-N, and it is unable to meet demand；For this purpose, Chinese Patent Application No.:
201711239894.X is disclosed a kind of containing V, Ti, Cr microalloy building steel bar and its LF furnace production method；For existing system
The problems such as alloy of vanadium nitride nitrogen content selected by standby nitrogen-containing alloy steel is low, type is few, it is micro- containing V, Ti, Cr that the present invention provides one kind
Alloy builds steel bar and its LF furnace production method；The constituent of the bar are as follows: by weight percentage, C:0.15%~
0.30%, Si:0.30%~1.00%, Mn:0.60%~1.30%, N:0.0060%~0.0180%, P≤0.040%, S
≤ 0.040%, V:0.010%~0.100%, Ti:0.010%~0.030%, Cr:0.10%~0.60%, surplus be Fe and
Inevitable impurity；The key of preparation method feeds core-spun yarn containing N, adjustment N to suitable level after being the refining of LF furnace；
The method of the present invention is easy to operate, and nitrogen recovery rate is high and stablizes, moreover it is possible to effectively reduce production cost, be worth of widely use；But its
It is expensive that micro V element is added, ton steel cost increases, and processing method is comparatively laborious.
Summary of the invention
To solve the above problems, the invention proposes a kind of V-Ti composite alloys to strengthen hot rolled ribbed bars processing method,
While meeting steel performance, cost of implementation is optimal.
V-Ti composite alloy of the invention strengthens hot rolled ribbed bars processing method, and the method is specific as follows:
Step 1: titanium nitride alloying ingredient, the nitridation titanium alloy component includes Si:17-20%, Mn:2-5%, N:10-20%, Ti:
20-30%, surplus are Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms titanium nitride conjunction
Jin Bao；
Step 2: the control standard of composite alloy ingredient: C:0.22-0.25%, Si:0.60-0.80%, Mn:1.40-1.60%, P:
≤ 0.045%, S :≤0.045%, V:0.005-0.010%, Ti: >=0.010%, Ceq :≤0.54%；Surplus is for Fe and unavoidably
Impurity；
Step 3: composite alloy processing:
(1) converter procedure: converter procedure not killing directlys adopt silicomanganese, ferrosilicon, VN alloy and carries out alloying, tapping
It finishes and the top 600Kg debris ash is added；Bottom-blowing of converter, converter ladle bottom blowing are all made of nitrogen；
(2) refining procedure: refining ladle bottom blowing whole process is added in refining furnace after using argon gas, molten steel to enter the station and nitrogenizes titanium alloy
0.8Kg/t, when nitridation titanium alloy packet is added must whole packet be added, oxygen is determined in energization temperature raising, then fine tuning carbon, silicon, manganese, vanadium, titanium at
Part, calcium line 150m, 4 ~ 5m/s of feeding wire speed, soft blow 5min are fed after composition is qualified.
(3) continuous casting working procedure: 1503 DEG C of steel grade liquidus temperature, Con casting ladle to middle packet is poured using the protection of big packet long nozzle
Note, middle packet liquid level use alkaline covering agent and charring rice husk, and middle packet to crystallizer is poured using submersed nozzle and protection flux shielding
Note, 1525 ~ 1535 DEG C of tundish temperature when conticaster flows casting entirely, 3.2 ~ 3.5m/min of pulling rate, not more than 3.5m/min；
The selection of nitridation titanium alloy prepares, converter, refining, continuous casting working procedure operate in the control range and smelting process of alloying component
The formulation of main points；The selection of the nitridation titanium alloy mainly nitrogenizes the requirement of titanium alloy component, the control of the alloying component
Range is the control standard of final steel water alloying component, converter in the smelting process, refining, continuous casting working procedure key points for operation system
Surely refer to that the determination on opportunity and additional amount is added in alloy；This V-Ti composite alloy strengthens new technology, can pass through the compound conjunction of V-Ti
Gold is strengthened, and while meeting steel performance, cost of implementation is optimal.
As preferred embodiment, the nitridation titanium alloy component includes Si:17%, Mn:2%, N:10%, Ti:20%, remaining
Amount is Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet.
As preferred embodiment, the nitridation titanium alloy component includes Si:18%, Mn:4%, N:15%, Ti:25%, remaining
Amount is Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet；
As preferred embodiment, the nitridation titanium alloy component includes Si:20%, Mn:5%, N:20%, Ti:30%, surplus
For Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet.
Compared with prior art, V-Ti composite alloy of the invention strengthens hot rolled ribbed bars processing method to the present invention；
Titanium alloy is nitrogenized by addition, makes the N in steel with the presence of V-Ti compound form, precipitation strength effect is obvious, while V-Ti is tied
Closing object is that high-melting-point ceramic phase form is precipitated, and precipitated phase plays pinning effect in crystal boundary, austenite can be prevented to ferritic transformation
The crystal grain of process is grown up, and refined crystalline strengthening effect is significant；Strengthen new technology by V-Ti composite alloy, steel cost of alloy substantially drops
It is low；While meeting steel performance, cost of implementation is optimal.
Specific embodiment
V-Ti composite alloy of the invention strengthens hot rolled ribbed bars processing method, and the method is specific as follows:
Step 1: titanium nitride alloying ingredient, the nitridation titanium alloy component includes Si:17-20%, Mn:2-5%, N:10-20%, Ti:
20-30%, surplus are Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms titanium nitride conjunction
Jin Bao；
Step 2: the control standard of composite alloy ingredient: C:0.22-0.25%, Si:0.60-0.80%, Mn:1.40-1.60%, P:
≤ 0.045%, S :≤0.045%, V:0.005-0.010%, Ti: >=0.010%, Ceq :≤0.54%；Surplus is for Fe and unavoidably
Impurity；
Step 3: composite alloy processing:
(1) converter procedure: converter procedure not killing directlys adopt silicomanganese, ferrosilicon, VN alloy and carries out alloying, tapping
It finishes and the top 600Kg debris ash is added；Bottom-blowing of converter, converter ladle bottom blowing are all made of nitrogen；
(2) refining procedure: refining ladle bottom blowing whole process is added in refining furnace after using argon gas, molten steel to enter the station and nitrogenizes titanium alloy
0.8Kg/t, when nitridation titanium alloy packet is added must whole packet be added, oxygen is determined in energization temperature raising, then fine tuning carbon, silicon, manganese, vanadium, titanium at
Part, calcium line 150m, 4 ~ 5m/s of feeding wire speed, soft blow 5min are fed after composition is qualified.
(3) continuous casting working procedure: 1503 DEG C of steel grade liquidus temperature, Con casting ladle to middle packet is poured using the protection of big packet long nozzle
Note, middle packet liquid level use alkaline covering agent and charring rice husk, and middle packet to crystallizer is poured using submersed nozzle and protection flux shielding
Note, 1525 ~ 1535 DEG C of tundish temperature when conticaster flows casting entirely, 3.2 ~ 3.5m/min of pulling rate, not more than 3.5m/min；
The selection of nitridation titanium alloy prepares, converter, refining, continuous casting working procedure operate in the control range and smelting process of alloying component
The formulation of main points；The selection of the nitridation titanium alloy mainly nitrogenizes the requirement of titanium alloy component, the control of the alloying component
Range is the control standard of final steel water alloying component, converter in the smelting process, refining, continuous casting working procedure key points for operation system
Surely refer to that the determination on opportunity and additional amount is added in alloy；This V-Ti composite alloy strengthens new technology, can pass through the compound conjunction of V-Ti
Gold is strengthened, and while meeting steel performance, cost of implementation is optimal.
In another embodiment, the nitridation titanium alloy component includes Si:17%, Mn:2%, N:10%, Ti:20%, surplus Fe
With inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet.
In another embodiment, the nitridation titanium alloy component includes Si:18%, Mn:4%, N:15%, Ti:25%, surplus Fe
With inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet；
In another embodiment, the nitridation titanium alloy component includes Si:20%, Mn:5%, N:20%, Ti:30%, surplus be Fe and
Inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet.
Above-described embodiment is only better embodiment of the invention, therefore all according to structure described in present patent application range
It makes, the equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (4)
1. a kind of V-Ti composite alloy strengthens hot rolled ribbed bars processing method, it is characterised in that: the method is specific as follows:
Step 1: titanium nitride alloying ingredient, the nitridation titanium alloy component includes Si:17-20%, Mn:2-5%, N:10-20%, Ti:
20-30%, surplus are Fe and inevitable impurity；The nitridation titanium alloy carries out packaging with every packet 10kg and forms titanium nitride conjunction
Jin Bao；
Step 2: the control standard of composite alloy ingredient: C:0.22-0.25%, Si:0.60-0.80%, Mn:1.40-1.60%, P:
≤ 0.045%, S :≤0.045%, V:0.005-0.010%, Ti: >=0.010%, Ceq :≤0.54%；Surplus is for Fe and unavoidably
Impurity；
Step 3: composite alloy processing:
(1) converter procedure: converter procedure not killing directlys adopt silicomanganese, ferrosilicon, VN alloy and carries out alloying, tapping
It finishes and the top 600Kg debris ash is added；Bottom-blowing of converter, converter ladle bottom blowing are all made of nitrogen；
(2) refining procedure: refining ladle bottom blowing whole process is added in refining furnace after using argon gas, molten steel to enter the station and nitrogenizes titanium alloy
0.8Kg/t, when nitridation titanium alloy packet is added must whole packet be added, oxygen is determined in energization temperature raising, then fine tuning carbon, silicon, manganese, vanadium, titanium at
Part, calcium line 150m, 4 ~ 5m/s of feeding wire speed, soft blow 5min are fed after composition is qualified；
(3) continuous casting working procedure: 1503 DEG C of steel grade liquidus temperature, Con casting ladle to middle packet uses big packet long nozzle molding casting, in
Packet liquid level uses alkaline covering agent and charring rice husk, and middle packet to crystallizer uses submersed nozzle and covering slag molding casting, even
1525 ~ 1535 DEG C of tundish temperature when casting machine flows casting entirely, 3.2 ~ 3.5m/min of pulling rate, not more than 3.5m/min.
2. V-Ti composite alloy according to claim 1 strengthens hot rolled ribbed bars processing method, it is characterised in that: described
Nitridation titanium alloy component includes Si:17%, Mn:2%, N:10%, Ti:20%, and surplus is Fe and inevitable impurity；The nitridation
Titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet.
3. V-Ti composite alloy according to claim 1 strengthens hot rolled ribbed bars processing method, it is characterised in that: described
Nitridation titanium alloy component includes Si:18%, Mn:4%, N:15%, Ti:25%, and surplus is Fe and inevitable impurity；The nitridation
Titanium alloy carries out packaging with every packet 10kg and forms nitridation titanium alloy packet；
4. V-Ti composite alloy according to claim 1 strengthens hot rolled ribbed bars processing method, it is characterised in that: described
Nitridation titanium alloy component includes Si:20%, Mn:5%, N:20%, Ti:30%, and surplus is Fe and inevitable impurity；The nitrogen
Change titanium alloy and packaging formation nitridation titanium alloy packet is carried out with every packet 10kg.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111172459A (en) * | 2020-01-19 | 2020-05-19 | 江苏省沙钢钢铁研究院有限公司 | HRB600E vanadium-titanium microalloyed high-strength anti-seismic hot-rolled steel bar |
| CN113512683A (en) * | 2021-07-16 | 2021-10-19 | 新疆八一钢铁股份有限公司 | Low-carbon consumption preparation method of high-strength anti-seismic steel bar |
| CN115029614A (en) * | 2022-05-30 | 2022-09-09 | 山东莱钢永锋钢铁有限公司 | Method for producing deformed steel bar by combining titanium-nitrogen composite strengthening and controlled rolling and controlled cooling |
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| CN113512683A (en) * | 2021-07-16 | 2021-10-19 | 新疆八一钢铁股份有限公司 | Low-carbon consumption preparation method of high-strength anti-seismic steel bar |
| CN115029614A (en) * | 2022-05-30 | 2022-09-09 | 山东莱钢永锋钢铁有限公司 | Method for producing deformed steel bar by combining titanium-nitrogen composite strengthening and controlled rolling and controlled cooling |
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