CN2844127Y - Composite air port of blast-furnace - Google Patents
Composite air port of blast-furnace Download PDFInfo
- Publication number
- CN2844127Y CN2844127Y CN 200520031357 CN200520031357U CN2844127Y CN 2844127 Y CN2844127 Y CN 2844127Y CN 200520031357 CN200520031357 CN 200520031357 CN 200520031357 U CN200520031357 U CN 200520031357U CN 2844127 Y CN2844127 Y CN 2844127Y
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- utility
- steel plate
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- model
- air opening
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Abstract
The utility model relates to a composite air opening of a blastfurnace, which adopt different materials to be welded in a split mode with the open type processing; therefore, the structural strength and the rigidity of the composite air opening of a blastfurnace are improved. The composite air opening of a blastfurnace is mainly composed of a front body, an inner sleeve, a main body and a flow guiding device, wherein the front body and the inner sleeve which is welded with the inner side of the front body are vulnerable regions. The performance of the utility model can reach the optimum state by adopting a rolled copper plate which is formed by spinning. The main body which is welded with the front body and the inner sleeve into an integral body is made of a steel plate. A sealing conical surface on the outer edge of the steel plate is in sheathing match with an air opening, and the sealing spherical surface at the back end of the steel plate is matched with a blowpipe, wherein both of the sealing conical surface and the sealing spherical surface are specially processed with the material of copper alloy. The flow guiding device with an inner cavity is made of a steel plate. In the composite air opening of a blastfurnace, the front body, the inner sleeve and the main body are made in a split mode. A baffle plate of a passage of the flow guiding device adopts the open type processing, so the thickness of the wall of the baffle plate is uniform. The inner cavity which has smooth transition and precise size is easy to satisfy the design requirements. The integral cost is reduced by 50%. Moreover, the strength and the rigidity of the front body and the inner sleeve satisfy the operating requirements. The mechanical properties and the physical properties of the utility model is superior to those of an integral cast piece. The utility model is not easy to deform in the installation and the use. The service life of the utility model can be prolonged by 1.5 times compared.
Description
Affiliated technical field
The utility model relates to the combined type blast-furnace tuyere that a kind of blast furnace ironmaking is used.
Background technology
In the blast furnace ironmaking, blast-furnace tuyere is in the furnace high-temperature district, is the passage of carrying (about 1100 ℃) hot blast and coal injection and oxygen enrichment in stove.Present blast-furnace tuyere mainly contains monoblock casting, split casting welding and the split casting-forging copper alloy part in conjunction with welding.Under the working of a furnace normal circumstances, tuyere small sleeve mainly is subjected to the erosive wear of high-temperature zone molten iron and furnace charge; The wearing and tearing of coal injection and oxygen enrichment; Heat conductivility is bad to cause the not smooth scaling loss of current with inner chamber casting scab; Weld seam and local casting flaw cause the influence of factors such as leaking, damage easily.The monoblock casting blast-furnace tuyere, because of casting flaw, dense structure's degree is poor, and work-ing life is low; Though the blast-furnace tuyere life-span of split welding improves, manufacturing cost is higher, has restricted the development of blast furnace ironmaking to a certain extent.
Summary of the invention
In order to solve the above-mentioned technical problem that blast-furnace tuyere exists, blast-furnace tuyere is adopted unlike material split welding, open processing, thus improve structural strength and rigidity, reduce cost, improve the life-span, a kind of combined type blast-furnace tuyere is provided for this reason.
The technical scheme that the utility model adopted is:
This blast-furnace tuyere mainly is made up of precursor, interior cover, body and director.
The interior cover of precursor and its inboard welding is a damageable zone, adopts rolled copper slab to be shaped, and its performance can reach optimum regime.Be welded as whole body with said two devices and adopt the steel plate manufacturing, the trim that trim that the body outer rim cooperates with cover in the air port and rear end cooperate with belly pipe all adopts the Cu alloy material special processing.The inner chamber director adopts the steel plate manufacturing.
The utility model adopts composite structure, precursor, interior cover, body split production, and the director channel partition adopts open processing, wall thickness is even, inner chamber is excessively slick and sly, and size is accurate, and design requirements is content with very little, whole cost reduces by 50%, and precursor, interior cover intensity and rigidity satisfy service requirements, and mechanical property and physicals are better than solid casting, install and use not yielding, compare with present like product, can improve 1.5 times work-ing life.
Description of drawings
Accompanying drawing is a front view of the present utility model
Embodiment
Introduce embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in the figure: this blast-furnace tuyere mainly contains precursor (1), interior cover (2), body (3) and director (4) four parts and is welded to form.
Precursor (1) and its inboard interior cover (2) rapid wear that welds adopt the rolling copper sheet of high purity (Tu2) to make through rotary press modelling, and its every performance index can reach optimum regime.Rear end body (3) adopts perlite Refractory Steel (12CrMo) to make, and wall thickness can corresponding attenuate, and to alleviate overall weight, not only intensity height, good rigidity have alleviated overall weight, can reduce cost again.The equal surfacing of Cu alloy of the sealing sphere (6) that sealing cone (5) that cover cooperates in body (3) outer rim and the air port and rear end cooperate with belly pipe, can guarantee with the air port in mating face seals such as cover, belly pipe good.
Inner chamber director (4) adopts soft steel steel plate (A3) manufacturing, can be designed to structures such as tubular, spiral, bicavate according to the blast furnace particular case, and to impel hot driving speed fast, cooling performance is better.
Claims (4)
1. combined type blast-furnace tuyere, it is characterized in that it mainly is made up of precursor, interior cover, body and inner chamber director, the interior cover of precursor and its inboard welding adopts the rolled copper slab that is shaped, be welded as whole rear end body with the two and adopt the steel plate manufacturing, the trim that trim that its outer rim cooperates with cover in the air port and rear end cooperate with belly pipe all adopts the Cu alloy material of special processing.
2. combined type blast-furnace tuyere according to claim 1 is characterized in that precursor, interior cover adopt through the rolling copper sheet of the high purity of rotary press modelling.
3. combined type blast-furnace tuyere according to claim 1 is characterized in that body adopts the perlite Refractory Steel to make, the equal surfacing of Cu alloy of sealing sphere that sealing cone that its outer rim cooperates with cover in the air port and rear end cooperate with belly pipe.
4. combined type blast-furnace tuyere according to claim 1 is characterized in that the inner chamber director adopts steel plate to be made into tubular, spiral or dual-chamber structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031357 CN2844127Y (en) | 2005-07-26 | 2005-07-26 | Composite air port of blast-furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520031357 CN2844127Y (en) | 2005-07-26 | 2005-07-26 | Composite air port of blast-furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2844127Y true CN2844127Y (en) | 2006-12-06 |
Family
ID=37486079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520031357 Expired - Fee Related CN2844127Y (en) | 2005-07-26 | 2005-07-26 | Composite air port of blast-furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2844127Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624352A (en) * | 2016-03-15 | 2016-06-01 | 山东钢铁股份有限公司 | Copper and steel combined blast furnace tuyere small sleeve |
| CN112066728A (en) * | 2020-09-22 | 2020-12-11 | 江西城桥复合材料有限公司 | Efficient copper smelting furnace |
-
2005
- 2005-07-26 CN CN 200520031357 patent/CN2844127Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105624352A (en) * | 2016-03-15 | 2016-06-01 | 山东钢铁股份有限公司 | Copper and steel combined blast furnace tuyere small sleeve |
| CN112066728A (en) * | 2020-09-22 | 2020-12-11 | 江西城桥复合材料有限公司 | Efficient copper smelting furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |