CN202063949U - Vanadium-nitrogen alloy cored wire - Google Patents
Vanadium-nitrogen alloy cored wire Download PDFInfo
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- CN202063949U CN202063949U CN2011201483595U CN201120148359U CN202063949U CN 202063949 U CN202063949 U CN 202063949U CN 2011201483595 U CN2011201483595 U CN 2011201483595U CN 201120148359 U CN201120148359 U CN 201120148359U CN 202063949 U CN202063949 U CN 202063949U
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- vanadium
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- cored
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Abstract
The utility model discloses a vanadium-nitrogen alloy cored wire, which can improve recovery rate of vanadium. The cored wire comprises a core layer made of vanadium nitride alloy and a sheath layer warped outside the core layer. A mesh supporting layer and a metal aluminum layer are sequentially warped between the core layer and the sheath layer from inside to outside. In the process of feeding the cored wire into liquid steel, the aluminum and free oxygen are combined first due to the fact that affinity of the aluminum and oxygen is higher that that of the vanadium and the oxygen, the content of the free oxygen of the liquid steel is reduced greatly, and the possibility of combination between the vanadium and the oxygen is reduced correspondingly. Accordingly, more vanadium takes part in alloying, and recovery rate of the vanadium is improved. The amplitude of fluctuation of the recovery rate of the vanadium is smaller, and the recovery rate of the vanadium can be increased to 96% to 98%.
Description
Technical field
The utility model relates to a kind of VN alloy cored-wire that is used to realize molten steel vanadium, nitrogen alloying.
Background technology
Alloy of vanadium nitride is a kind of novel alloy additive, can substitute the production that vanadium iron is used for microalloyed steel.Alloy of vanadium nitride makes an addition to the comprehensive mechanical performances such as intensity, toughness, ductility and thermal fatigue resistance that can improve steel in the steel, and makes steel have good weldability.Reaching under the same intensity, adding vanadium nitride and save vanadium add-on 30～40%, and then reduced cost.Alloy of vanadium nitride can be used for structure iron, tool steel, and pipe line steel is in reinforcing bar and the cast iron.Alloy of vanadium nitride is applied to can carry out effective vanadium, nitrogen microalloying simultaneously in the high-strength low-alloy steel, and what promote carbon in the steel, vanadium, nitrogen compound separates out more effective performance sedimentation reinforcement and crystal grain thinning effect.
Because directly that alloy of vanadium nitride is lower with the rate of recovery that block-shape morphology adds in the molten steel, so mainly be to realize molten steel vanadium, nitrogen alloying in the prior art by the method that in molten steel, feeds cored-wire.This method is block or the physical method fragmentation of spherical alloy of vanadium nitride, packs into cored-wire with iron sheet or sheetmetal again, and alloy of vanadium nitride forms the sandwich layer of cored-wire, and iron sheet or sheetmetal form the crust of cored-wire; Then with above-mentioned cored-wire by in the molten steel in the Yarn feeding device feeding ladle, make molten steel vanadium, nitrogen alloying.This kind method vanadium, the nitrogen alloying element rate of recovery are higher, and vanadium recovery is 88～95%, and nitrogen recovery is 70～90%.But this kind method has the following disadvantages: vanadium recovery is still lower, and the fluctuating range of vanadium recovery and nitrogen recovery is bigger, influences the stability of quality product; During slag mobile relatively poor, cored-wire is in feeding molten steel process, and the drag effect that is subjected to slag is bigger, and broken string or card line often take place.
In addition, Chinese patent 200610020447.0 discloses a kind of cored-wire that is used to realize molten steel vanadium, nitrogen alloying, and this cored-wire comprises steel crust and the sandwich layer of being made by alloy of vanadium nitride.This cored-wire also the problems referred to above can occur when reality is used.
The utility model content
The technical problem that the utility model solves provides a kind of VN alloy cored-wire that is used to realize molten steel vanadium, nitrogen alloying that improves vanadium recovery.
The technical scheme that its technical problem that solves the utility model adopts is: the VN alloy cored-wire, comprise sandwich layer of making by alloy of vanadium nitride and the exodermis that is wrapped in described sandwich layer outside, be enclosed with mesh-supported layer and metal aluminium lamination between described sandwich layer and the exodermis from inside to outside successively.
Further be: described mesh-supported layer is made of steel or iron.
Further be: described metal aluminium lamination is by the metallic aluminium granulometric composition of particle diameter smaller or equal to 5mm.
Further be: described sandwich layer is by the alloy of vanadium nitride granulometric composition of particle diameter smaller or equal to 5mm.
The beneficial effects of the utility model are: in cored-wire feeding molten steel process, because the avidity of aluminium and oxygen is far above the avidity of vanadium and oxygen, so aluminium at first with molten steel in free oxygen combination, thereby the free oxygen level of molten steel is significantly reduced, this is with regard to corresponding vanadium and the oxygen bonded possibility of having reduced, thereby make more vanadium participate in alloying, and then improved the rate of recovery of vanadium, and the fluctuating range of the rate of recovery of vanadium is less.In addition, because aluminium is oxidized to be an exothermic process, help to improve the flowability of the slag on molten steel surface, and then can be convenient to feed cored-wire in the molten steel fast, reduce the loss of cored-wire at the slag layer, this also can corresponding raising vanadium and the rate of recovery of nitrogen, also can prevent to occur in the line feeding process card line and the broken string of cored-wire.Vanadium recovery can be increased to 96% to 98%.
Description of drawings
Fig. 1 is the synoptic diagram of the cross section of VN alloy cored-wire.
Be labeled as among the figure: 1-exodermis, 2-metal aluminium lamination, 3-mesh-supported layer, 4-sandwich layer.
Embodiment
Below in conjunction with embodiment the utility model is further specified.
As shown in Figure 1, VN alloy cored-wire of the present utility model, comprise sandwich layer of making by alloy of vanadium nitride 4 and the exodermis 1 that is wrapped in described sandwich layer 4 outsides, be enclosed with mesh-supported layer 3 and metal aluminium lamination 2 between described sandwich layer 4 and the exodermis 1 from inside to outside successively.In cored-wire feeding molten steel process, because the avidity of aluminium and oxygen is far above the avidity of vanadium and oxygen, so aluminium at first with molten steel in free oxygen combination, thereby the free oxygen level of molten steel is significantly reduced, this is with regard to corresponding vanadium and the oxygen bonded possibility of having reduced, thereby make more vanadium participate in alloying, and then improved the rate of recovery of vanadium.In addition, because aluminium is oxidized to be an exothermic process, help to improve the flowability of the slag on molten steel surface, and then can be convenient to feed cored-wire in the molten steel fast, reduce the loss of cored-wire at the slag layer, this also can corresponding raising vanadium and the rate of recovery of nitrogen, also can prevent to occur in the line feeding process card line and the broken string of cored-wire.
Above-mentioned exodermis 1 can be made by sheetmetal or iron sheet.Above-mentioned mesh-supported layer 3 can be made by materials such as steel or iron, just steel mesh or iron net etc.The mesh-supported layer 3 that steel or iron are made can play the good supporting effect to sandwich layer on the one hand, can not introduce unwanted element to molten steel on the other hand, guarantees that the alloying element in the molten steel meets the requirements.
Be dissolved in fast in the molten steel for the ease of the metal aluminium lamination and react with oxygen, described metal aluminium lamination 2 is by the metallic aluminium granulometric composition of particle diameter smaller or equal to 5mm.
Be dissolved in fast in the molten steel for the ease of sandwich layer, participate in the alloying of molten steel, described sandwich layer 4 is by the alloy of vanadium nitride granulometric composition of particle diameter smaller or equal to 5mm.
Claims (4)
1. VN alloy cored-wire, comprise the sandwich layer of making by alloy of vanadium nitride (4) and be wrapped in the outside exodermis (1) of described sandwich layer (4), it is characterized in that: be enclosed with mesh-supported layer (3) and metal aluminium lamination (2) between described sandwich layer (4) and the exodermis (1) from inside to outside successively.
2. VN alloy cored-wire as claimed in claim 1 is characterized in that: described mesh-supported layer (3) is made of steel or iron.
3. VN alloy cored-wire as claimed in claim 1 or 2 is characterized in that: described metal aluminium lamination (2) is by the metallic aluminium granulometric composition of particle diameter smaller or equal to 5mm.
4. VN alloy cored-wire as claimed in claim 1 or 2 is characterized in that: described sandwich layer (4) is by the alloy of vanadium nitride granulometric composition of particle diameter smaller or equal to 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201483595U CN202063949U (en) | 2011-05-11 | 2011-05-11 | Vanadium-nitrogen alloy cored wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201483595U CN202063949U (en) | 2011-05-11 | 2011-05-11 | Vanadium-nitrogen alloy cored wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202063949U true CN202063949U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201483595U Expired - Fee Related CN202063949U (en) | 2011-05-11 | 2011-05-11 | Vanadium-nitrogen alloy cored wire |
Country Status (1)
| Country | Link |
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| CN (1) | CN202063949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115261712A (en) * | 2022-08-03 | 2022-11-01 | 山东钢铁股份有限公司 | Composite vanadium-nitrogen alloy, manufacturing process and using method thereof |
-
2011
- 2011-05-11 CN CN2011201483595U patent/CN202063949U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115261712A (en) * | 2022-08-03 | 2022-11-01 | 山东钢铁股份有限公司 | Composite vanadium-nitrogen alloy, manufacturing process and using method thereof |
| CN115261712B (en) * | 2022-08-03 | 2023-12-22 | 山东钢铁股份有限公司 | Composite vanadium-nitrogen alloy, manufacturing process and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20170511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |