CN102839254A - Non-sticky steel converter oxygen lance and manufacturing method thereof - Google Patents
Non-sticky steel converter oxygen lance and manufacturing method thereof Download PDFInfo
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- CN102839254A CN102839254A CN 201210345486 CN201210345486A CN102839254A CN 102839254 A CN102839254 A CN 102839254A CN 201210345486 CN201210345486 CN 201210345486 CN 201210345486 A CN201210345486 A CN 201210345486A CN 102839254 A CN102839254 A CN 102839254A
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Abstract
The invention discloses a non-sticky steel converter oxygen lance and a manufacturing method thereof. The non-sticky steel converter oxygen lance comprises an oxygen lance connecting pipe and an oxygen lance spraying nozzle located at the bottom of the oxygen lance connecting pipe, wherein a compound coating is arranged at the outer side of the oxygen lance connecting pipe or the oxygen lance spraying nozzle. The non-sticky steel converter oxygen lance disclosed by the invention has the advantages of good quenching and quick heating resistant performance, good combining strength, poor wetting performance with steel liquid and obvious steel dreg-sticking prevention effect, the exchanging frequency of the oxygen lance connecting pipe and the oxygen lance spraying nozzle is reduced, the converter production efficiency is improved, and the potential safety hazard of equipment and persons is reduced; and the non-sticky steel converter oxygen lance has great economic benefits and use values.
Description
Technical field
The present invention relates to a kind of non-stick steel converter oxygen gun and preparation method thereof.
Background technology
Along with the continuous enhancing of china's overall national strength, the national economy stable development, Infrastructure is constantly perfect, and China has become the country of world's output of steel first, also is simultaneously iron and steel consumption big country.Converter steelmaking is the important component part of Iron and Steel Production, and the oxygen rifle is one of key equipment of oxygen converter steelmaking.Factors such as yet because slag is not changed goodization thoroughly in the converting process, flowability is poor, and the metal splash is serious, and perhaps the rifle position is low excessively cause the oxygen rifle to be easy to steel bonding.When the steel bonding of oxygen rifle after a little while, can the later stage rinse in blowing with slag.But when the steel bonding of oxygen rifle is serious, need handles the laggard pedestrian worker of blow off, otherwise must change the oxygen rifle.Therefore no matter can learn through above-mentioned treating method, be the quality to steel, lining life, and the consumption of material, all can have detrimentally affect tap to tap time etc.
Also propose in the industry simultaneously to adopt measures such as graphite spraying, tapering oxygen rifle to guarantee oxygen rifle outer tube non-stick steel or lack steel bonding, but effect is not satisfactory.Because graphite spraying mainly is that equipment is huge, inconvenient operation adds under high temperature and molten steel scouring, can not guarantee sprayed coating securely attached to oxygen rifle outer tube wall, in case the effect that just do not have that comes off.And tapering oxygen rifle is owing to increase tapering postcooling water flow velocity and accelerate, and cooling performance makes moderate progress, but the steel bonding phenomenon still exists, relatively easy some during chilly at most steel, the easy separation point of slag.
Summary of the invention
The object of the invention provides a kind of non-stick steel converter oxygen gun and preparation method thereof.
For reaching a purpose; The technical scheme that the present invention adopts is: a kind of non-stick steel converter oxygen gun; It is characterized in that: it comprises the oxygen lance blow head that the oxygen rifle is taken over and is positioned at oxygen rifle adapter bottom, and wherein the outside of adapter of oxygen rifle or oxygen lance blow head has a compound coating.
Said compound coating comprises attached to the oxygen rifle at least to be taken over or bonding coat, the high-temperature-resistant layer in the oxygen lance blow head outside and the antistick layer that is positioned at the outside.
Said oxygen rifle is taken over and is comprised outboard tube, pipe core and the inside tube between outboard tube and pipe core, and said oxygen lance blow head comprises the central part that docks with pipe core, the inside portion of docking with inside tube and the outside portion of docking with outboard tube; The end of described central part is provided with a plurality of oxygen through holes.
For reaching another purpose, another technical scheme that the present invention adopts is: a kind of making method of non-stick steel converter oxygen gun, it comprises the steps:
S1: forge oxygen lance blow head and mechanical workout, this oxygen lance blow head comprises central part, outside portion and the inside portion between central part and outside portion, and the end of central part is provided with a plurality of oxygen through holes;
S2: provide an oxygen rifle that is arranged on the oxygen lance blow head top to take over, it comprises the outboard tube of docking with the outside portion, the pipe core that docks with central part and the inside tube of docking with the inside portion;
S3: take over or the outside of oxygen lance blow head sprays a compound coating and dries to the oxygen rifle.
Said compound coating comprises attached to the oxygen rifle at least to be taken over or bonding coat, the high-temperature-resistant layer in the oxygen lance blow head outside and the antistick layer that is positioned at the outside.
Because the utilization of technique scheme, the present invention has advantage:
1) have good heat impact strength and high bonding strength, poor with the wettability of molten steel, the effect of tangible anti-stick slag is arranged.
2) long lifetime rifle head can prolong the work-ing life of the body of a gun, reduces the replacing number of times of adapter of oxygen rifle and oxygen lance blow head, practices thrift cost, and is safe, improves converter production efficiency, and the potential safety hazard of the minimizing equipment and the person has very big economic benefit and use value.
Description of drawings
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
Fig. 1 is a cross-sectional schematic of the present invention;
Fig. 2 is the cross-sectional schematic of oxygen lance blow head of the present invention;
Embodiment
Embodiment: shown in Fig. 1-2; The present invention provides a kind of specific embodiment of non-stick steel converter oxygen gun; It comprises oxygen rifle adapter 10 and is positioned at the oxygen lance blow head 20 that the oxygen rifle is taken over 10 bottoms; Wherein the outside of adapter 10 of oxygen rifle or oxygen lance blow head 20 has a compound coating, and this compound coating comprises attached to bonding coat, the high-temperature-resistant layer in the adapter 10 of oxygen rifle or oxygen lance blow head 20 outsides and the antistick layer that is positioned at the outside at least.This compound coating has enough refractoriness and high-temperature stability, has good viscosity and thixotropy, guarantees that spraying back coatingsurface is smooth; Have good suspension and storage characteristics, guarantee in the specific time undercoat not stratifiedly, do not precipitate, lump and keep stable performance, never degenerate; Use abundant raw material, cost is low, and is free from environmental pollution.
The oxygen rifle is taken over 10 and is comprised outboard tube 12, pipe core 14 and the inside tube 16 between outboard tube 12 and pipe core 14, wherein forms cooling water channel between outboard tube 12 and the inside tube 16 at interval.
And oxygen lance blow head 20 comprises the central part 100 that docks with pipe core 14, the inside portion 200 of docking with inside tube 16 and the outside portion 300 of docking with outboard tube 12; The end of central part 100 is provided with a plurality of oxygen through holes 400.Hole, a plurality of Lavalle copper post 500 is arranged on the end of central part 100 equably and forms the hole, Lavalle at interval, and hole, said Lavalle also forms gas channels with oxygen through hole 400; Said inside portion 200 is arranged on the middle part of hole, Lavalle copper post 500; Said oxygen rifle bottom 300 is arranged on the outside of the bottom of hole, Lavalle copper post 500; The inboard, bottom of hole, said Lavalle copper post 500 is provided with a base plate 600; Wherein above-mentioned each parts are whole settings, form through precision casting; Likewise above-mentioned each parts also can then form through welding for forging and pressing form again.Hole, Lavalle copper post 500 also can with outside portion 300 one or split setting.
As everyone knows, oxygen lance blow head 20 is very important technology parts, because it is very near at steel melting furnace middle distance molten steel face, even directly contacts molten steel, so working conditions is abominable relatively.For achieving the above object, present embodiment adopts and forges shower nozzle and realize that through mechanical workout the formation of spout and cooling-water duct replaces the precision casting process of more complicated in the past, and product percent of pass is high, guarantees quality product through forging quality.Dense internal organization is used reliably, and the anticollision performance in the use obviously is superior to cast member.The work-ing life of this oxygen lance blow head is on average about the 400-500 heat; Apparently higher than conventional cast shower nozzle 3-4 doubly in addition more than; This numerical value has exceeded the mean lifetime (120 heat) of domestic ordinary oxygen rifle far away; The benefit of so bringing is that the combination of the non-stick steel body of a gun and long lifetime shower nozzle can prolong oxygen rifle online work-ing life, reduces the frequency of changing shower nozzle, prolongs 3-4 doubly than common life-span of oxygen lance.Reduce and change the shower nozzle number of times, raise labour productivity.
According to the foregoing description, the present invention also provides a kind of making method of non-stick steel converter oxygen gun, and it comprises the steps:
S1: forge oxygen lance blow head and mechanical workout, this oxygen lance blow head comprises central part, outside portion and the inside portion between central part and outside portion, and the end of central part is provided with a plurality of oxygen through holes;
S2: provide an oxygen rifle that is arranged on the oxygen lance blow head top to take over, it comprises the outboard tube of docking with the outside portion, the pipe core that docks with central part and the inside tube of docking with the inside portion;
S3: take over or the outside of oxygen lance blow head sprays a compound coating and dries to the oxygen rifle.
Said compound coating comprises attached to the oxygen rifle at least to be taken over or bonding coat, the high-temperature-resistant layer in the oxygen lance blow head outside and the antistick layer that is positioned at the outside.
Wherein the adapter of oxygen rifle is to carry out spray treatment near the outside of oxygen lance blow head.
In sum, compound coating of the present invention utilizes special process to adhere to, and has good heat impact strength and high bonding strength; Poor with the wettability of molten steel; The effect of tangible anti-stick slag is arranged, reduce the replacing frequency of adapter of oxygen rifle and oxygen lance blow head, improve converter production efficiency; The potential safety hazard of the minimizing equipment and the person has very big economic benefit and use value.
Certainly the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.The all spirit of main technical schemes is done according to the present invention equivalent transformation or modification all should be encompassed within protection scope of the present invention.
Claims (6)
1. non-stick steel converter oxygen gun is characterized in that: it comprises that the oxygen rifle takes over (10) and be positioned at the oxygen lance blow head (20) that the oxygen rifle is taken over (10) bottom, and wherein the oxygen rifle outside of taking over (10) or oxygen lance blow head (20) has a compound coating.
2. non-stick steel converter oxygen gun according to claim 1 is characterized in that: said compound coating comprises attached to the oxygen rifle at least takes over bonding coat, the high-temperature-resistant layer in (10) or oxygen lance blow head (20) outside and the antistick layer that is positioned at the outside.
3. non-stick steel converter oxygen gun according to claim 2; It is characterized in that: said oxygen rifle take over (10) comprise outboard tube (12), pipe core (14) and be positioned at outboard tube (12) and pipe core (14) between inside tube (16), and said oxygen lance blow head (20) comprises the central part (100) that docks with pipe core (14), the inside portion (200) of docking with inside tube (16) and the outside portion (300) of docking with outboard tube (12); The end of described central part (100) is provided with a plurality of oxygen through holes (400).
4. non-stick steel converter oxygen gun according to claim 1 is characterized in that: said oxygen lance blow head (20) is a press forging.
5. the making method of a non-stick steel converter oxygen gun, it comprises the steps:
S1: forge oxygen lance blow head (20) and mechanical workout; This oxygen lance blow head (20) comprise central part (100), outside portion (300) and be positioned at central part (100) and outside portion (300) between inside portion (200), and the end of central part (100) is provided with a plurality of oxygen through holes (400);
S2: provide an oxygen rifle that is arranged on oxygen lance blow head (20) top to take over (10), it comprises the outboard tube (12) of docking with outside portion (300), the pipe core (14) that docks with central part (100) and the inside tube (16) of docking with inside portion (200);
S3: spray a compound coating and dry to the outside that the oxygen rifle is taken over (10) or oxygen lance blow head (20).
6. the making method of non-stick steel converter oxygen gun according to claim 5 is characterized in that: said compound coating comprises attached to the oxygen rifle at least takes over bonding coat, the high-temperature-resistant layer in (10) or oxygen lance blow head (20) outside and the antistick layer that is positioned at the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210345486 CN102839254A (en) | 2012-09-18 | 2012-09-18 | Non-sticky steel converter oxygen lance and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210345486 CN102839254A (en) | 2012-09-18 | 2012-09-18 | Non-sticky steel converter oxygen lance and manufacturing method thereof |
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| CN102839254A true CN102839254A (en) | 2012-12-26 |
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| CN 201210345486 Pending CN102839254A (en) | 2012-09-18 | 2012-09-18 | Non-sticky steel converter oxygen lance and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232838A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Red copper oxygen lance sprayer |
| CN105486091A (en) * | 2015-12-18 | 2016-04-13 | 中南大学 | Oxygen lance for smelting of molten pool |
| CN108642233A (en) * | 2018-05-11 | 2018-10-12 | 鞍钢股份有限公司 | A method of improving the converter oxygen gun service life |
| CN110846461A (en) * | 2018-07-27 | 2020-02-28 | 包头市英曼科技有限公司 | Preparation method of anti-sticking steel coating on surface of oxygen lance and oxygen lance with anti-sticking steel coating |
| CN115141906A (en) * | 2021-03-28 | 2022-10-04 | 上海梅山钢铁股份有限公司 | Long-life oxygen lance nozzle for converter smelting |
| CN115896388A (en) * | 2022-11-18 | 2023-04-04 | 唐山创微自动化设备有限公司 | Sublance slag adhesion-proof coating |
-
2012
- 2012-09-18 CN CN 201210345486 patent/CN102839254A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104232838A (en) * | 2014-09-19 | 2014-12-24 | 姜利祥 | Red copper oxygen lance sprayer |
| CN105486091A (en) * | 2015-12-18 | 2016-04-13 | 中南大学 | Oxygen lance for smelting of molten pool |
| CN108642233A (en) * | 2018-05-11 | 2018-10-12 | 鞍钢股份有限公司 | A method of improving the converter oxygen gun service life |
| CN108642233B (en) * | 2018-05-11 | 2019-10-29 | 鞍钢股份有限公司 | A method of improving the converter oxygen gun service life |
| CN110846461A (en) * | 2018-07-27 | 2020-02-28 | 包头市英曼科技有限公司 | Preparation method of anti-sticking steel coating on surface of oxygen lance and oxygen lance with anti-sticking steel coating |
| CN115141906A (en) * | 2021-03-28 | 2022-10-04 | 上海梅山钢铁股份有限公司 | Long-life oxygen lance nozzle for converter smelting |
| CN115896388A (en) * | 2022-11-18 | 2023-04-04 | 唐山创微自动化设备有限公司 | Sublance slag adhesion-proof coating |
| CN115896388B (en) * | 2022-11-18 | 2023-12-19 | 唐山创微自动化设备有限公司 | Slag-sticking-preventing coating for sublance |
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Application publication date: 20121226 |