CN107175460A - Tuyere cover of blast furnace renovation technique - Google Patents
Tuyere cover of blast furnace renovation technique Download PDFInfo
- Publication number
- CN107175460A CN107175460A CN201710240430.4A CN201710240430A CN107175460A CN 107175460 A CN107175460 A CN 107175460A CN 201710240430 A CN201710240430 A CN 201710240430A CN 107175460 A CN107175460 A CN 107175460A
- Authority
- CN
- China
- Prior art keywords
- welding
- inspection
- blast furnace
- tuyere
- restorative procedure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/095—Monitoring or automatic control of welding parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Manufacture Of Iron (AREA)
Abstract
A kind of tuyere cover of blast furnace renovation technique, is related to the operation and maintenance technical field of tuyere cover of blast furnace.Including the method for inspection and restorative procedure, the described method of inspection and restorative procedure is：1st, the method for inspection；2nd, restorative procedure.The present invention has by repairing the tuyere cover of blast furnace damaged, recycles to reduce waste, reduces the good effect of production cost.
Description
Technical field
The present invention relates to the operation and maintenance technical field of tuyere cover of blast furnace, particularly belong to a kind of tuyere cover of blast furnace and repair work
Skill.
Background technology
Blast-furnace tuyere front end, the char particle rotated at a high speed by Blast Furnace Raceway and furnace charge abrasion and slag crust come off, make air port
Set front end is easily deformed, and abrasion is even burnt.After tuyere case damage, present widespread practice is to renew, and is thus made
Into substantial amounts of waste, production cost is set to remain high.
The content of the invention
The purpose of the present invention is to be to provide a kind of tuyere cover of blast furnace renovation technique, to reach by repairing the blast furnace damaged
Tuyere case, recycles to reduce waste, reduces the purpose of production cost.
Tuyere cover of blast furnace renovation technique provided by the present invention includes the method for inspection and restorative procedure, it is characterised in that institute
The method of inspection and restorative procedure stated be：
1st, the method for inspection
A, cleaning
Clear up surface and oil contaminant and inner chamber incrustation scale；
B, inspection
Integral colouring is detected a flaw, and examines defect crack；
Water flowing experiment is carried out, examines water route whether unimpeded；
Pressure test is carried out, water is forced into 2.0Mpa, is kept for 30 minutes, checks whether leak；
2nd, restorative procedure
A, processing damaged location
Damaged location is cut；
Bearing rib is welded on the inside of cutting part；
Model is repaired in b, making
Made according to the shape cut down and repair model；
The surrounding processing welding groove of repairing duplicate sample plate；
C, weld preparation
Model will be repaired and be placed on cutting part, spot welding is fixed；
To being cleared up in the 30mm of groove both sides, polishing cleaning is carried out until exposing metallic luster from stainless steel wire wheel, weldering is brushed
Agent；
Tuyere case is preheated, preheating temperature is to 500 ~ 650 DEG C, and preheating time was controlled in 1.5 hours；
C, welding
Argon arc welding is selected in welding, and welding wire selects 3.0 chromium-zirconium-copper welding wires；
First pass welding current is 300A voltage 21V, throat depth 4mm；
Second time welding current is 350A voltage 21V, throat depth 3mm；
3rd time welding current is 400A voltage 22V, throat depth 4mm；
D, welding post processing
Welding eliminates stress after finishing with 5 kilograms of power touch weld seam；
With heat-preservation cotton parcel insulation slow cooling；
Weld seam carries out reconditioning processing, dye penetrant inspection after cooling；
The progress water pressure test, pressure 2.0Mpa, pressurize 30 minutes, ne-leakage is qualified.
Described welding groove is 60 ° of double V-grooves.
The tuyere cover of blast furnace renovation technique that the present invention is provided, cuts to damaged location, and is welded on the inside of cutting part
Bearing rib is connect, can prevent from being deformed during reparation；By above renovation technique technology, the tuyere case of reparation can
The use condition of blast furnace is met, is reached and new product identical service life.Therefore, the present invention has is damaged by repairing
Tuyere cover of blast furnace, recycle to reduce wastes, the good effect of reduction production cost.
Embodiment
Tuyere cover of blast furnace renovation technique provided by the present invention includes the method for inspection and restorative procedure, it is characterised in that institute
The method of inspection and restorative procedure stated be：
1st, the method for inspection
D, cleaning
Clear up surface and oil contaminant and inner chamber incrustation scale；
E, inspection
Integral colouring is detected a flaw, and examines defect crack；
Water flowing experiment is carried out, examines water route whether unimpeded；
Pressure test is carried out, water is forced into 2.0Mpa, is kept for 30 minutes, checks whether leak；By the crackle detected, leakage
Water spot is marked；
2nd, restorative procedure
A, processing damaged location
Damaged location is cut；
Bearing rib is welded on the inside of cutting part；
Model is repaired in b, making
Made according to the shape cut down and repair model；
The surrounding processing welding groove of repairing duplicate sample plate；Described welding groove is 60 ° of double V-grooves；
C, weld preparation
Model will be repaired and be placed on cutting part, spot welding is fixed；
To being cleared up in the 30mm of groove both sides, polishing cleaning is carried out until exposing metallic luster from stainless steel wire wheel, weldering is brushed
Agent；
Tuyere case is preheated, preheating temperature is to 500 ~ 650 DEG C, and preheating time was controlled in 1.5 hours；
F, welding
Argon arc welding is selected in welding, and welding wire selects 3.0 chromium-zirconium-copper welding wires；
First pass welding current is 300A voltage 21V, throat depth 4mm；
Second time welding current is 350A voltage 21V, throat depth 3mm；
3rd time welding current is 400A voltage 22V, throat depth 4mm；
D, welding post processing
Welding eliminates stress after finishing with 5 kilograms of power touch weld seam；
With heat-preservation cotton parcel insulation slow cooling；
Weld seam carries out reconditioning processing, dye penetrant inspection after cooling；
The progress water pressure test, pressure 2.0Mpa, pressurize 30 minutes, ne-leakage is qualified.
By above renovation technique technology, various tuyere cases, such as tuyere small sleeve, tuyere medium sleeve can be repaired, reparation
Tuyere case disclosure satisfy that the use condition of blast furnace, reach and new product identical service life.The blast-furnace tuyere repaired
Set, can be recycled, and can reduce waste, reduce enterprise's production cost.
Claims (2)
1. a kind of tuyere cover of blast furnace renovation technique, including the method for inspection and restorative procedure, it is characterised in that the described method of inspection
It is with restorative procedure：
1st, the method for inspection
Cleaning
Clear up surface and oil contaminant and inner chamber incrustation scale；
Examine
Integral colouring is detected a flaw, and examines defect crack；
Water flowing experiment is carried out, examines water route whether unimpeded；
Pressure test is carried out, water is forced into 2.0Mpa, is kept for 30 minutes, checks whether leak；
2nd, restorative procedure
A, processing damaged location
Damaged location is cut；
Bearing rib is welded on the inside of cutting part；
Model is repaired in b, making
Made according to the shape cut down and repair model；
The surrounding processing welding groove of repairing duplicate sample plate；
C, weld preparation
Model will be repaired and be placed on cutting part, spot welding is fixed；
To being cleared up in the 30mm of groove both sides, polishing cleaning is carried out until exposing metallic luster from stainless steel wire wheel, weldering is brushed
Agent；
Tuyere case is preheated, preheating temperature is to 500 ~ 650 DEG C, and preheating time was controlled in 1.5 hours；
Welding
Argon arc welding is selected in welding, and welding wire selects 3.0 chromium-zirconium-copper welding wires；
First pass welding current is 300A voltage 21V, throat depth 4mm；
Second time welding current is 350A voltage 21V, throat depth 3mm；
3rd time welding current is 400A voltage 22V, throat depth 4mm；
D, welding post processing
Welding eliminates stress, then slow cooling after finishing with 5 kilograms of power touch weld seam；
Weld seam carries out reconditioning processing, dye penetrant inspection after cooling；
The progress water pressure test, pressure 2.0Mpa, pressurize 30 minutes, ne-leakage is qualified.
2. tuyere cover of blast furnace renovation technique according to claim 1, it is characterised in that described welding groove is 60 ° of V-types
Groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710240430.4A CN107175460A (en) | 2017-04-13 | 2017-04-13 | Tuyere cover of blast furnace renovation technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710240430.4A CN107175460A (en) | 2017-04-13 | 2017-04-13 | Tuyere cover of blast furnace renovation technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107175460A true CN107175460A (en) | 2017-09-19 |
Family
ID=59830899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710240430.4A Pending CN107175460A (en) | 2017-04-13 | 2017-04-13 | Tuyere cover of blast furnace renovation technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107175460A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857262A (en) * | 2018-08-30 | 2018-11-23 | 中国十九冶集团有限公司 | Tap-hole bar of blast furnace restorative procedure |
| CN109604997A (en) * | 2019-01-25 | 2019-04-12 | 葫芦岛市滨海宇通自动化控制有限公司 | Ship hydraulic jacking apparatus method for maintaining |
| CN110900127A (en) * | 2019-11-28 | 2020-03-24 | 汕头华兴冶金设备股份有限公司 | Manufacturing method of blast furnace tuyere sleeve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217658A (en) * | 1990-08-03 | 1993-06-08 | Georg Fischer Ag | Method for repairing a hot-blast long-time cupola furnace |
| CN101638699A (en) * | 2009-08-07 | 2010-02-03 | 重庆钢铁(集团)有限责任公司 | Repair method of bores of blast furnace tuyere small sleeve |
| CN101760575A (en) * | 2010-02-03 | 2010-06-30 | 南通宝钢钢铁有限公司 | On-line mending way of blast-furnace tuyere large sleeve |
| CN102489935A (en) * | 2011-11-14 | 2012-06-13 | 武汉钢铁(集团)公司 | Blast-furnace tuyere preparation method |
| CN102766710A (en) * | 2012-07-12 | 2012-11-07 | 承德金章机械配件加工有限公司 | Restoration method for tuyere small sleeve of blast furnace |
| CN103801805A (en) * | 2014-01-21 | 2014-05-21 | 马鞍山马钢设备安装工程有限公司 | Sleeve welding repair method in blast-furnace tuyere |
-
2017
- 2017-04-13 CN CN201710240430.4A patent/CN107175460A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5217658A (en) * | 1990-08-03 | 1993-06-08 | Georg Fischer Ag | Method for repairing a hot-blast long-time cupola furnace |
| CN101638699A (en) * | 2009-08-07 | 2010-02-03 | 重庆钢铁(集团)有限责任公司 | Repair method of bores of blast furnace tuyere small sleeve |
| CN101760575A (en) * | 2010-02-03 | 2010-06-30 | 南通宝钢钢铁有限公司 | On-line mending way of blast-furnace tuyere large sleeve |
| CN102489935A (en) * | 2011-11-14 | 2012-06-13 | 武汉钢铁(集团)公司 | Blast-furnace tuyere preparation method |
| CN102766710A (en) * | 2012-07-12 | 2012-11-07 | 承德金章机械配件加工有限公司 | Restoration method for tuyere small sleeve of blast furnace |
| CN103801805A (en) * | 2014-01-21 | 2014-05-21 | 马鞍山马钢设备安装工程有限公司 | Sleeve welding repair method in blast-furnace tuyere |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857262A (en) * | 2018-08-30 | 2018-11-23 | 中国十九冶集团有限公司 | Tap-hole bar of blast furnace restorative procedure |
| CN109604997A (en) * | 2019-01-25 | 2019-04-12 | 葫芦岛市滨海宇通自动化控制有限公司 | Ship hydraulic jacking apparatus method for maintaining |
| CN110900127A (en) * | 2019-11-28 | 2020-03-24 | 汕头华兴冶金设备股份有限公司 | Manufacturing method of blast furnace tuyere sleeve |
| CN110900127B (en) * | 2019-11-28 | 2021-08-31 | 汕头华兴冶金设备股份有限公司 | Manufacturing method of blast furnace tuyere sleeve |
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Application publication date: 20170919 |