Non-sticky steel converter oxygen lance and manufacturing method thereof

The technology of a converter oxygen lance and its production method is applied in the direction of manufacturing converters, etc., which can solve the problems of adverse effects of smelting time, ineffectiveness, inconvenient operation, etc., achieve great economic benefits and use value, reduce the number of replacements, reduce The effect of safety hazards

Inactive Publication Date: 2012-12-26
SUZHOU BAOLIAN HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the oxygen lance is seriously stuck to steel, manual treatment is required after the blowing is stopped, otherwise the oxygen lance must be replaced
Therefore, through the above treatment methods, it can be known that there will be adverse effects on the quality of steel, the life of the furnace lining, the consumption of materials, and the smelting time.
[0003] At the same time, the industry also proposed measures such as spraying graphite and tapered oxygen lances to ensure that the outer tube of the oxygen lance does not stick to steel or less sticks to steel, but

Method used

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  • Non-sticky steel converter oxygen lance and manufacturing method thereof
  • Non-sticky steel converter oxygen lance and manufacturing method thereof

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Embodiment

[0019] Example: such as Figure 1-2 As shown, the present invention provides a specific embodiment of a non-stick steel converter oxygen lance, which includes an oxygen lance adapter 10 and an oxygen lance nozzle 20 positioned at the bottom of the oxygen lance adapter 10, wherein the oxygen lance adapter 10 or the oxygen lance nozzle 20 There is a composite coating on the outside, and the composite coating at least includes an adhesive layer attached to the outside of the oxygen lance nozzle 10 or the oxygen lance nozzle 20, a high temperature resistant layer, and a non-stick layer on the outside. The composite coating has sufficient refractoriness and high temperature stability, and has good viscosity and thixotropy to ensure a smooth coating surface after spraying; it has good suspension and storage properties to ensure that the coating does not delaminate within a specified time , no precipitation, agglomeration, stable performance and no deterioration; abundant raw materia...

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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 [0001] The invention relates to a non-stick steel converter oxygen lance and a manufacturing method thereof. Background technique [0002] With the continuous enhancement of my country's comprehensive national strength, the steady development of the national economy, and the continuous improvement of infrastructure, my country has become the world's largest steel producer and a big steel consumer. Converter steelmaking is an important part of steel production, and oxygen lance is one of the key equipment for oxygen converter steelmaking. However, the oxygen lance is easy to stick to steel due to factors such as the slag not being melted well during the blowing process, the fluidity is poor, the metal spatter is serious, or the lance position is too low. When the oxygen lance sticks to steel less, it can be rinsed off with slag in the later stage of blowing. However, when the oxygen lance sticks to steel seriously, it needs to be handled manually after the b...

Claims

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Application Information

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IPC IPC(8): C21C5/46
Inventor 曹卫文雷雨田王建丰
Owner SUZHOU BAOLIAN HEAVY IND
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