CN102719599A - Method for plugging double-layered sleeve type bottom gun central pipe - Google Patents
Method for plugging double-layered sleeve type bottom gun central pipe Download PDFInfo
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- CN102719599A CN102719599A CN2012102125553A CN201210212555A CN102719599A CN 102719599 A CN102719599 A CN 102719599A CN 2012102125553 A CN2012102125553 A CN 2012102125553A CN 201210212555 A CN201210212555 A CN 201210212555A CN 102719599 A CN102719599 A CN 102719599A
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- pipe core
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- mould
- central pipe
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Abstract
The invention relates to a method for plugging a double-layered sleeve type bottom gun central pipe, comprising the following sequential steps of: I, smashing dispersed fireproof materials in a mould hole to form a cylindrical plugging rod in a mould with the mould hole; then opening a mould template and taking out the cylindrical plugging rod, wherein the diameter of the mould hole is phi12-15 mm and the depth of the mould hole is 50 mm; one end of the mould hole is provided with a mould hole bottom; the length of the cylindrical plugging rod is 50 mm and the diameter of the plugging rod is 1..0-4.0 mm less than the inner diameter of the bottom gun central pipe; II, plugging the cylindrical plugging rod into the bottom gun central pipe; and connecting the cylindrical plugging rod which is plugged into the central pipe end to end and fully filling the bottom gun central pipe; and III, welding a steel sheet at the outer end of the bottom gun central pipe and baffling the end part of a pipe hole of the bottom gun central pipe. The method for plugging the double-layered sleeve type bottom gun central pipe disclosed by the invention has the rapid plugging effect; and the time for plugging a bottom gun can be shortened to 3.5 minutes from 46 minutes of the previous plugging method.
Description
Technical field
The present invention relates to the method for rifle pipe core at the bottom of the shutoff double braid covering tubular type.
Background technology
The K-OBM-S converter be because of using full molten iron smelting stainless steel, and has short, advantage such as residual element are few tap to tap time, and tempo is very fast.
K-OBM-S converter smelting stainless steel adopts the compound oxygen supply technology in the end, top, and end rifle uses the double braid covering tubular type, and the carbon period pipe core supplies O
2, endless tube supplies N
2(Ar); Reduction period pipe core and endless tube all supply N
2(Ar), because of the high (0.19-0.31Nm of its oxygen supply intensity
3/ (tmin)), as control badly, end rifle erosive velocity is fast; And the rifle erosive velocity of several ends that furnace bottom distributes is inhomogeneous; To the stove labour later stage, often occur one of them or several fast because of erosive velocity, the length short-range missile causes end rifle, and to go into stokehold pressure low; For avoiding end rifle bleed-out, need take rifle pipe core operation at the bottom of the shutoff.
At the bottom of the shutoff during rifle pipe core, need to use and loose the shape ramming mass the central tube hole plug of end rifle, little steel disc is welded in the rifle outer end end of at then, prevents that ramming mass from flowing out, and can continue subsequently to smelt.
At the bottom of the shutoff during operation of rifle pipe core, because of end rifle length long (950 ~ 1000mm), cause operation long-time (time spent 57 ~ 70min), and efficiency is low, envrionment temperature is high, labor condition is abominable.
Summary of the invention
In order to overcome the above-mentioned deficiency of rifle central tube method at the bottom of the existing shutoff double braid covering tubular type, the present invention provides a kind of minimizing shutoff activity duration, improves the method for rifle pipe core at the bottom of the shutoff double braid covering tubular type of converter operating rate.
Present method comprises following sequential steps:
IIn having the mould of nib, loose refractory ramming in nib is become cylindrical stemming rod, open mould template then, take out cylindrical stemming rod; The diameter of nib is Φ 12mm-15mm, and the dark 50mm of nib, an end of nib have (nib has the end) at the bottom of the nib; The length of cylindrical stemming rod is 50mm, and the diameter of stemming rod is than the little 1.0mm-4.0mm of internal diameter (filling in the pipe core) of end rifle pipe core
IIFill in cylindrical stemming rod in the end rifle pipe core, the cylindrical stemming rod of filling in the pipe core is end to end, and end rifle pipe core is filled;
IIIWelding steel disc in rifle pipe core outer end blocks the pore end of the end rifle pipe core end of at.
General operation is, the end to end length of some cylindrical stemming rod that breaks into is not less than the length of end rifle pipe core, when filling in pipe core, cuts the part that grows.
The method of rifle pipe core at the bottom of the above-mentioned shutoff double braid covering tubular type; The structure that it is characterized in that described mould with nib is following: mould has two symmetric templates; Two templates tighten together with hex bolt and nut; Contact surface along two templates between two templates has a minimum nib, the lower end closed of nib, and nib is about the contact surface symmetry of two templates.
The present invention can play the effect of quick blocking in advance with the ramming mass moulding.Rifle pipe core at the bottom of the ability quick blocking, the stifled rifle time end can shorten to 3.5 minutes by 46 minutes of former method for blocking, adds non-cutting times such as closing source of the gas, the little steel disc of welding, and the stifled rifle activity duration end can be controlled in 20 minutes.Compare with original method for blocking, the activity duration shortens about 40 minutes, alleviates operative employee's labour intensity, has improved the converter operating rate.
Description of drawings
Fig. 1 is the front view of anti-timber die.
Fig. 2 is and the corresponding vertical view of Fig. 1.
Fig. 3 is the sectional view along A among Fig. 2-A line.
Among the above-mentioned figure:
1-hexagonal head bolt, 2-packing ring, 3-mould, 4-hexagonal head bolt
5-template, 6-template, 7-hex-nut, 8-packing ring, 9-nib, 10-nib, 11-nib, 12-nib, 13-nib.
Embodiment
Specify embodiment of the present invention below in conjunction with embodiment, but embodiment of the present invention is not limited to following embodiment.
Embodiment
The present embodiment shutoff be diameter of phi 16mm, the end rifle pipe core of long 1000mm.
Present embodiment is a following sequential steps:
IIn the mould with nib 3, the shape ramming mass ramming in nib 10 that will loose becomes cylindrical stemming rod, and opens the template 5 and template 6 of mould 3, takes out stemming rod; The diameter of nib 10 is Φ 15mm, the dark 50mm of nib, and an end of nib 10 has at the bottom of the nib; The length of stemming rod is 50mm, and the diameter of stemming rod is than the little 1.0mm of internal diameter of end rifle pipe core; Ramming becomes 20 stemming rods;
IIFill in stemming rod in the end rifle pipe core, the cylindrical stemming rod of filling in the pipe core is end to end, and end rifle pipe core is filled;
IIIWelding steel disc in rifle pipe core outer end blocks the pore end of the end rifle pipe core end of at.
The used mould of present embodiment is seen Fig. 1, Fig. 2 and Fig. 3; The mould 3 of three figure descriptions has two symmetric templates; Be template 5 and template 6, template 5 tightens together with template 6 usefulness hexagonal head bolts 1 and with hexagonal head bolt 4 and nut, and the contact surface along template 5 and template 6 between template 5 and template 6 has five nibs; Be nib 9, nib 10, nib 11, nib 12 and nib 13, the lower end closed of five nibs among Fig. 3.Each nib is about the contact surface symmetry of template 5 with template 6, and promptly each nib respectively has the hole half in template 5 and template 6.Wherein nib 10 is Φ 15mm with the diameter of nib 12, the dark 50mm of nib, the end rifle pipe core stemming rod of making diameter of phi 15mm.Nib 9, nib 11 are Φ 12mm with the diameter of nib 13, the dark 50mm of nib, the end rifle pipe core stemming rod of making diameter of phi 12mm.
Claims (2)
1. the method for rifle pipe core at the bottom of the shutoff double braid covering tubular type, it comprises following sequential steps:
IIn having the mould of nib, loose refractory ramming in nib is become cylindrical stemming rod, open mould template then, take out cylindrical stemming rod; The diameter of nib is Φ 12mm-15mm, the dark 50mm of nib, and an end of nib has at the bottom of the nib; The length of cylindrical stemming rod is 50mm, and the diameter of stemming rod is than the little 1.0mm-4.0mm of internal diameter of end rifle pipe core;
IIFill in cylindrical stemming rod in the end rifle pipe core, the cylindrical stemming rod of filling in the pipe core is end to end, and end rifle pipe core is filled;
IIIWelding steel disc in rifle pipe core outer end blocks the pore end of the end rifle pipe core end of at.
2. require the method for rifle pipe core at the bottom of the 1 described shutoff double braid covering tubular type according to power; The structure that it is characterized in that described mould with nib is following: mould has two symmetric templates; Two templates tighten together with hex bolt and nut; Contact surface along two templates between two templates has a minimum nib, the lower end closed of nib, and nib is about the contact surface symmetry of two templates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102125553A CN102719599A (en) | 2012-06-26 | 2012-06-26 | Method for plugging double-layered sleeve type bottom gun central pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102125553A CN102719599A (en) | 2012-06-26 | 2012-06-26 | Method for plugging double-layered sleeve type bottom gun central pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102719599A true CN102719599A (en) | 2012-10-10 |
Family
ID=46945464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102125553A Pending CN102719599A (en) | 2012-06-26 | 2012-06-26 | Method for plugging double-layered sleeve type bottom gun central pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102719599A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461934Y (en) * | 2001-01-20 | 2001-11-28 | 钢铁研究总院 | Circular gap furnace base oxygen feeder for reblowing converter |
| CN200998768Y (en) * | 2007-01-11 | 2008-01-02 | 宝山钢铁股份有限公司 | Stemming sampling mould |
| CN101487072A (en) * | 2009-02-23 | 2009-07-22 | 钢铁研究总院 | Multifunctional circular seam type gas supply element for steel melting |
-
2012
- 2012-06-26 CN CN2012102125553A patent/CN102719599A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461934Y (en) * | 2001-01-20 | 2001-11-28 | 钢铁研究总院 | Circular gap furnace base oxygen feeder for reblowing converter |
| CN200998768Y (en) * | 2007-01-11 | 2008-01-02 | 宝山钢铁股份有限公司 | Stemming sampling mould |
| CN101487072A (en) * | 2009-02-23 | 2009-07-22 | 钢铁研究总院 | Multifunctional circular seam type gas supply element for steel melting |
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Application publication date: 20121010 |