CN202968665U - Core-spun yarn for nitrogen alloying - Google Patents
Core-spun yarn for nitrogen alloying Download PDFInfo
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- CN202968665U CN202968665U CN 201220643956 CN201220643956U CN202968665U CN 202968665 U CN202968665 U CN 202968665U CN 201220643956 CN201220643956 CN 201220643956 CN 201220643956 U CN201220643956 U CN 201220643956U CN 202968665 U CN202968665 U CN 202968665U
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Abstract
The utility model discloses a core-spun yarn for nitrogen alloying. The core-spun yarn for nitrogen alloying comprises an outer layer (1) and a core layer (4), wherein an aluminum mesh support layer (3) is arranged on the outer surface of the core layer (4); and a calcium-silicon alloy layer (2) is arranged between the aluminum mesh support layer (3) and the outer layer (1). According to the core-spun yarn, the aluminum mesh support layer is arranged on the outer surface of the core layer; the calcium-silicon alloy layer is arranged between the aluminum mesh support layer and the outer layer, so that the aluminum mesh support layer can play a good supporting effect on the core layer, and does not bring unnecessary elements into molten steel; the aluminum mesh support layer can play a good nitrogen fixing role, so as to improve and stabilize the recovery rate of nitrogen; adopted nitriding ferroalloy particles benefit rapid dissolving of the core layer in the molten steel for participating in alloying of the molten steel; the oxygen content and the sulphur content of the molten steel are greatly reduced; and the core-spun yarn is high in recovery rate to nitrogen, the content of nitrogen in a product fluctuates slightly, and product quality is stable.
Description
Technical field
The utility model relates to a kind of cored-wire, relates in particular to a kind of cored-wire for nitrogen alloying.
Background technology
The nitrogen alloying of steel can improve the comprehensive mechanical performances such as intensity, plasticity, toughness and thermal fatigue resistance of steel, and makes steel have good weldability.Reaching under identical intensity, nitrogen alloying is saved microalloy element vanadium, titanium, niobium etc., and then has reduced cost.The nitrogen alloying technology can be used in structure iron, tool steel, stainless steel, reinforced bar steel and cast iron.Nitrogen alloying and micro-alloying technology are united and applied in high-strength low-alloy steel, can promote separating out of carboritride in steel, more effectively bring into play precipitation strength and Grain refinement.
Be mainly to add nitro-alloy in the smelting later stage in prior art, as nitrided ferro-chromium, nitrogenize ferromanganese, nitrided iron, realize nitrogen alloying, but the rate of recovery of nitrogen lower (70-90%) and fluctuation are larger, affect the stability of quality product.as the Chinese patent notification number be: CN1818086A, the day for announcing is: the patent of invention on August 16th, 2006 discloses and has been used for realizing molten steel vanadium in a kind of smelting, the cored-wire of nitrogen alloying, can be at molten steel vanadium, vanadium and the nitrogen alloying element rate of recovery are improved and stablize, this cored-wire comprises the skin of sandwich layer and steel, sandwich layer is made wire by outer field parcel, sandwich layer contains alloy of vanadium nitride, after having gone out steel or liquid steel refining cored-wire is fed the molten steel depths by feeding wire machine after processing, thereby realize adding vanadium in molten steel, the purpose of nitrogen and other alloying elements.But the defective of this structure is: manufacturing process is complicated, and is lower to the rate of recovery of nitrogen, and in product, the content fluctuation of nitrogen is larger, unstable product quality.
Summary of the invention
The purpose of this utility model is lower to the rate of recovery of nitrogen for existing nitrogen alloying cored-wire, and in product, the content fluctuation of nitrogen is larger, the defective of unstable product quality and deficiency, provide a kind of simple in structure, the rate of recovery to nitrogen is higher, in product the content of nitrogen fluctuation is less, a kind of cored-wire for nitrogen alloying of constant product quality.
For achieving the above object, technical solution of the present utility model is: a kind of cored-wire for nitrogen alloying comprises exodermis, sandwich layer, it is characterized in that: be provided with aluminium net supporting layer on the outside surface of described sandwich layer, be provided with the silicocalcium layer between aluminium net supporting layer and exodermis.
Described exodermis is made by the technical pure sheet iron strip, and aluminium net supporting layer is made by fine aluminium.
Described silicocalcium layer is less than or equal to the silicocalcium particle of 5 millimeters by particle diameter and consists of.
Described sandwich layer is less than or equal to the nitrided iron alloying pellet of 5 millimeters by particle diameter and consists of.
Described aluminium net supporting layer is the individual layer net, and mesh aperture is less than 5 millimeters.
The beneficial effects of the utility model are:
1, the utility model is provided with aluminium net supporting layer at the outside surface of sandwich layer, be provided with the silicocalcium layer between aluminium net supporting layer and exodermis, aluminium net supporting layer can play good supporting role to sandwich layer, simultaneously can not introduce unwanted element to molten steel yet, and aluminium net supporting layer can play fixed nitrogen effect preferably, thereby improves and stablized the rate of recovery of nitrogen.
2, the nitrided iron alloying pellet that adopts of the utility model is conducive to sandwich layer and is dissolved in fast in molten steel, participate in the alloying of molten steel, oxygen level and the sulphur content of molten steel significantly reduce, and be higher to the rate of recovery of nitrogen, in product the content of nitrogen fluctuation is less, constant product quality.
Description of drawings
Fig. 1 is the schematic diagram of the utility model cross section.
In figure: exodermis 1, silicocalcium layer 2, aluminium net supporting layer 3, sandwich layer 4.
Embodiment
Below in conjunction with description of drawings and embodiment, the utility model is described in further detail:
Referring to Fig. 1, a kind of cored-wire for nitrogen alloying of the present utility model comprises exodermis 1, and sandwich layer 4, the outside surface of described sandwich layer 4 are provided with aluminium net supporting layer 3, are provided with silicocalcium layer 2 between aluminium net supporting layer 3 and exodermis 1.
Described exodermis 1 is made by the technical pure sheet iron strip, and aluminium net supporting layer 3 is made by fine aluminium.
Described silicocalcium layer 2 is less than or equal to the silicocalcium particle of 5 millimeters by particle diameter and consists of.
Described sandwich layer 4 is less than or equal to the nitrided iron alloying pellet of 5 millimeters by particle diameter and consists of.
Described aluminium net supporting layer 3 is the individual layer net, and mesh aperture is less than 5 millimeters.
Be provided with silicocalcium layer 2 between aluminium net supporting layer 3 and exodermis 1, silicocalcium layer 2 is less than or equal to the silicocalcium particle of 5 millimeters by particle diameter and consists of, and can be convenient to silicocalcium layer 2 and be dissolved in fast in molten steel and with oxygen, sulphur and react.Aluminium net supporting layer 3 can play fixed nitrogen effect preferably, thereby improves and stablized the rate of recovery of nitrogen, makes the rate of recovery of nitrogen be stabilized in 90%-95%.Simultaneously sandwich layer 4 is less than or equal to the nitrided iron alloying pellet of 5 millimeters by particle diameter and consists of and be conducive to sandwich layer 4 and be dissolved in fast in molten steel, participates in the alloying of molten steel, has improved quality product.
Claims (5)
1. cored-wire that is used for nitrogen alloying, comprise exodermis (1), sandwich layer (4) is characterized in that: be provided with aluminium net supporting layer (3) on the outside surface of described sandwich layer (4), be provided with silicocalcium layer (2) between aluminium net supporting layer (3) and exodermis (1).
2. a kind of cored-wire for nitrogen alloying according to claim 1, it is characterized in that: described exodermis (1) is made by the technical pure sheet iron strip, and aluminium net supporting layer (3) is made by fine aluminium.
3. a kind of cored-wire for nitrogen alloying according to claim 1 is characterized in that: described silicocalcium layer (2) is less than or equal to the silicocalcium particle of 5 millimeters by particle diameter and consists of.
4. a kind of cored-wire for nitrogen alloying according to claim 1 is characterized in that: described sandwich layer (4) is less than or equal to the nitrided iron alloying pellet of 5 millimeters by particle diameter and consists of.
5. a kind of cored-wire for nitrogen alloying according to claim 1, it is characterized in that: described aluminium net supporting layer (3) is the individual layer net, and mesh aperture is less than 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643956 CN202968665U (en) | 2012-11-29 | 2012-11-29 | Core-spun yarn for nitrogen alloying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220643956 CN202968665U (en) | 2012-11-29 | 2012-11-29 | Core-spun yarn for nitrogen alloying |
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| Publication Number | Publication Date |
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| CN202968665U true CN202968665U (en) | 2013-06-05 |
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| CN 201220643956 Expired - Fee Related CN202968665U (en) | 2012-11-29 | 2012-11-29 | Core-spun yarn for nitrogen alloying |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723605A (en) * | 2017-11-30 | 2018-02-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel Bar and its LF stove production methods are built containing Ti, Cr microalloy |
| CN107747057A (en) * | 2017-11-30 | 2018-03-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its production method are built containing Ti, Cr microalloy |
| CN107815607A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Nb, Ti, Cr microalloy |
| CN107815604A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Nb, Ti microalloy |
| CN107815602A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel Bar and its LF stove production methods are built containing V, Nb, Ti, Cr microalloy |
| CN107815606A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its production method are built containing V, Nb, Cr microalloy |
| CN107955918A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Cr microalloy |
| CN107955908A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing Nb builds steel wire rod and its LF stove production methods |
| CN107955917A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Ti, Cr microalloy |
| CN107955905A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing V builds steel bar and its LF stove production methods |
| CN107955919A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Nb microalloy |
| CN107955914A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing Ti, Cr microalloy |
| CN107955909A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Cr microalloy |
-
2012
- 2012-11-29 CN CN 201220643956 patent/CN202968665U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723605A (en) * | 2017-11-30 | 2018-02-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel Bar and its LF stove production methods are built containing Ti, Cr microalloy |
| CN107747057A (en) * | 2017-11-30 | 2018-03-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its production method are built containing Ti, Cr microalloy |
| CN107815607A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Nb, Ti, Cr microalloy |
| CN107815604A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Nb, Ti microalloy |
| CN107815602A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel Bar and its LF stove production methods are built containing V, Nb, Ti, Cr microalloy |
| CN107815606A (en) * | 2017-11-30 | 2018-03-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its production method are built containing V, Nb, Cr microalloy |
| CN107955918A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Cr microalloy |
| CN107955908A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing Nb builds steel wire rod and its LF stove production methods |
| CN107955917A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Ti, Cr microalloy |
| CN107955905A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Microalloy containing V builds steel bar and its LF stove production methods |
| CN107955919A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel bar and its LF stove production methods are built containing V, Nb microalloy |
| CN107955914A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing Ti, Cr microalloy |
| CN107955909A (en) * | 2017-11-30 | 2018-04-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel wire rod and its LF stove production methods are built containing V, Cr microalloy |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211129 |