CN2775067Y

CN2775067Y - Combined welding type oxygen gun blow head

Info

Publication number: CN2775067Y
Application number: CN 200520090042
Authority: CN
Inventors: 高士乐
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-01
Filing date: 2005-04-01
Publication date: 2006-04-26
Anticipated expiration: 2015-04-01

Abstract

The utility model relates to a combined welding type oxygen gun blow head, which belongs to the oxygen gun blow head used for the steelmaking of a converter of a metallurgy industry. The utility model is characterized in that the inner part of a water sealing head is provided with a plurality of streamline laval oxygen blow pipes; the inner walls of the oxygen blow pipes are provided with electroplating hardened antiwear layers; a water baffle plate forms a streamline shape, and the water baffle plate is used for supporting and positioning; a compression section at the upper end of an oxygen distributary body is cast into the streamline shape by using the copper, and the lower end is provided with an upper water diversion cone; the lower end of the oxygen distributary body is spirally connected with the upper ends of the oxygen blow pipes, and the oxygen distributary body and the oxygen blow pipes are brazed to seal. In the process of smelting, the utility model enhances the stirring capability of oxygen flow for melting steel, shortens blowing time and reduces the probability of the slag cementing and the burning loss of the blow head of an oxygen gun. The high purity copper and the oxygen blow pipes are connected into integration by a welding method. The utility model uses the streamline water baffle plate, cooling effect is enhanced and cementing is reduced. The hardened antiwear layers at the inner walls of the oxygen blow pipes have favorable antiwear performance, so that the service life and the use period of the blow head of the oxygen gun are prolonged, and the utility model has the advantages of replacement times reduction, consumption decrease and labour productivity improvement.

Description

Combined and welded oxygen lance blow head

Technical field

The utility model belongs to a kind of metallurgy industry converter steelmaking oxygen lance blow head, particularly a kind of combined and welded oxygen lance blow head.

Background technology

The oxygen rifle is the key equipment of converter steelmaking, and the design of its shower nozzle, manufacturing and service condition are to improving output of steel, quality and reducing production costs particularly important.Development along with domestic and international metallurgy industry steel-smelting technology, the particularly raising of the expansion of converter steelmaking capacity and combustion intensity, to porous, the oxygen lance blow head that iron and steel enterprise's tradition is used is to adopt fine copper to make through monoblock casting, semi-monolithic extruding and forging by single hole for oxygen rifle and oxygen lance blow head.The oxygen lance blow head that monoblock casting is produced exists that cast structure is loose, defective is many and drawback such as rough inner surface.The common feature of said structure is that all make with the fine copper casting processing at oxygen lance blow head top and other position, is subjected to its purity that limits of present fine copper casting technique to be difficult to improve; Little or whole linking to each other of space between each Laval pipe.This not only makes production cost increase, and the vertical thermal resistance of oxygen lance blow head is increased, and cooling space and active cooling surface be long-pending to be reduced, cooling intensity reduces, descend to work-ing life.

Summary of the invention

The utility model has overcome the defective of above-mentioned existence, purpose provide a kind of have make simple, cooling intensity is big, cost is low, the combined and welded oxygen lance blow head of long service life.

The combined and welded oxygen lance blow head content Description of the utility model:

The combined and welded oxygen lance blow head of the utility model, divide fluid, water inlet pipe, water eliminator, water seal head, rising pipe, oxygen spray pipe to form by oxygen input tube, oxygen, it is characterized in that: a plurality of streamlining Laval oxygen spray pipes are set on the water seal head, wall has the plating hardened wear-resistant layer within it, its Ra value of smooth surface is less than 0.1 micron, and the outer wall carrier of oxygen spray pipe is an electrolytic copper; Water eliminator is streamlining, in the water seal head and oxygen divide between the fluid, adopt argon arc welding to be connected between the two ends of water eliminator and oxygen spray pipe and water inlet pipe, be used for supporting and locate; Oxygen divides the fluidic upper end to be the compression section, adopt casting in bronze to cause streamlining, the lower end is that going up of cone shape divided the water awl, and oxygen divides fluidic lower end and oxygen spray pipe upper end thread connection, sealed with brazing, oxygen divide between fluidic upper end and oxygen input tube and are connected with argon arc welding; The water seal head is set branch water awl with rolling high-purity copper plates die forming, its inboard, and oxygen spray pipe and water seal head adopt argon arc welding to connect as one, and water inlet pipe is arranged in the rising pipe.

The combined and welded oxygen lance blow head of the utility model is because fusiform Laval pipe has the advantages that the pressure of gas to be converted into greatly the speed energy, the oxygen spray pipe internal surface is very smooth in addition, reduce the friction resistance that tube wall produces air-flow, can make oxygen flow with velocity of sound motion more than two times or two times, in raising self kinetic energy, strengthened oxygen flow length, in smelting process:

1, can improve the stirring capacity of oxygen flow, make reaction rapider, shorten duration of blast, reduce consuming, raise labour productivity molten steel;

2, can strengthen distance between oxygen lance blow head and molten iron, reduce oxygen lance blow head and be stained with the probability of slag and scaling loss;

3, the hardened wear-resistant layer of oxygen spray pipe inwall, its hardness are tens times of fine copper, and wear resisting property is good, can effectively resist the wearing and tearing of the interior dust of air-flow and stove to outside nozzle, prolong the work-ing life of oxygen lance blow head, reduce and change number of times, raise labour productivity;

4, combined and welded oxygen lance blow head connects as one high purity copper and oxygen spray pipe with the method for welding, adopts fusiform water eliminator, has improved cooling performance, reduces and is stained with knot, prolongs the life cycle of oxygen lance blow head, reduces its consumption.

Description of drawings

Fig. 1 is combined and welded oxygen lance blow head structural representation

Among the figure: 1 is that oxygen input tube, 2 is that water inlet pipe, 4 is that rising pipe, 5 is that water eliminator, 6 is that oxygen spray pipe, 7 is that water seal head, 8 is a hardened wear-resistant layer for oxygen divides fluid, 3.

Embodiment

The combined and welded oxygen lance blow head of the utility model is achieved in that to do below in conjunction with accompanying drawing and specifies.See Fig. 1, combined and welded oxygen lance blow head divides fluid 2, water inlet pipe 3, rising pipe 4, water eliminator 5, oxygen spray pipe 6, water seal 7 to form by oxygen input tube 1, oxygen, in water seal 7, a plurality of streamlining Laval oxygen spray pipes 6 are set, wall has the hardened wear-resistant layer 8 of plating within it, hardened wear-resistant layer 8 is the metal nickel dams that adopt electrocasting to be shaped, the surface is very smooth, and its Ra value is less than 0.1 micron, and the outer wall carrier of oxygen spray pipe is an electrolytic copper.Water eliminator 5 is streamlining, adopts the highquality carbon steel template die to be pressed into shape, is located in the water seal 7 and oxygen divides between the fluid 2, and the two ends of water eliminator 5 adopt argon arc weldings to be connected with oxygen spray pipe 6 with water inlet pipe 3, locate with support.It is the compression section that oxygen divides the upper end of fluid 2, adopt casting in bronze to cause streamlining, the lower end is that going up of cone shape divided the water awl, and oxygen divides the lower end of fluid 2 and the upper end thread connection of oxygen spray pipe 6, sealed with brazing, oxygen divide the upper end of fluid 2 to be connected with oxygen input tube 1 usefulness argon arc welding.The rolling high-purity copper plates die forming of water seal 7 usefulness, its inboard are set branch water awl, and oxygen spray pipe 6 connects as one with water seal 7 an employing argon arc welding, and water inlet pipe 3 is arranged in the rising pipe 4.

Claims

1, a kind of combined and welded oxygen lance blow head, oxygen input tube (1), oxygen divide fluid (2), water inlet pipe (3), rising pipe (4), water eliminator (5), oxygen spray pipe (6), water seal head (7) to form, it is characterized in that: a plurality of streamlining Laval oxygen spray pipes (6) are set in water seal head (7), wall has plating hardened wear-resistant layer (8) within it, and the outer wall carrier of oxygen spray pipe (6) is an electrolytic copper; Water eliminator (5) is streamlining, in water seal head (7) and oxygen divide between the fluid (2), the two ends of water eliminator (5) and oxygen spray pipe (6) and water inlet pipe (3) adopt argon arc welding to be connected; It is the compression section that oxygen divides the upper end of fluid (2), adopt casting in bronze to cause streamlining, the lower end is that going up of cone shape divided the water awl, oxygen divides the lower end of fluid (2) to be threaded with oxygen spray pipe (6) upper end, sealed with brazing, oxygen divide the upper end of fluid (2) to adopt argon arc welding to be connected with oxygen input tube (1); Water seal head (7) is set branch water awl with rolling high-purity copper plates die forming, its inboard, and oxygen spray pipe (6) adopts argon arc welding to connect as one with water seal head (7), and water inlet pipe (3) is arranged in the rising pipe (4).

2, combined and welded oxygen lance blow head according to claim 1 is characterized in that: the plating hardened wear-resistant layer (8) on oxygen spray pipe (6) inwall is the metal nickel dam that adopts electrocasting to be shaped, and its Ra value of smooth surface is less than 0.1 micron.