CN105537880A - Method punching air opening flange holes of blast furnace shell in flat plate - Google Patents

Method punching air opening flange holes of blast furnace shell in flat plate Download PDF

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Publication number
CN105537880A
CN105537880A CN201610065941.2A CN201610065941A CN105537880A CN 105537880 A CN105537880 A CN 105537880A CN 201610065941 A CN201610065941 A CN 201610065941A CN 105537880 A CN105537880 A CN 105537880A
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cutting
cut
point
furnace shell
hole
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CN201610065941.2A
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CN105537880B (en
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马丽
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ANGANG CONSTRUCTION CONSORTIUM Co Ltd
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ANGANG CONSTRUCTION CONSORTIUM Co Ltd
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    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Abstract

The invention relates to a method punching air opening flange holes of a blast furnace shell in a flat plate. The method punching air opening flange holes of the blast furnace shell in the flat plate comprises the following steps: 1, cutting a steel plate into a plurality of fan-shaped tiles, and marking air opening flange hole cutting lines in corresponding blast furnace air opening positions; 2, placing cut furnace shell tiles on a numerical control cutting machine platform, cutting holes, reserving connecting bands between the cut air opening flange holes, and cutting each air opening flange hole in a manner shown in step 3; 3, after cutting the hole in each furnace shell tile, bending the furnace shell tile into an arc shape on a roll bending machine; and 4, after bending the furnace shell, cutting off the connecting bands along the air opening flange hole cutting lines by a gas welding gun for handwork. The cutting order is reasonably arranged, and the deformation of the air opening flange holes is controlled during cutting. As the connecting bands are reserved when the air opening flange holes are cut, the punching area is reduced, bending deformation is controlled, furnace shell bending quality is ensured, and the tolerances of the air opening flange holes are within a required range.

Description

Last furnace shell tuyere flange hole flat-plate pore-opening method
Technical field
The present invention relates to blast furnace and manufacture field, particularly last furnace shell tuyere flange hole flat-plate pore-opening method.
Background technology
Traditional last furnace shell tuyere flange hole is with model hole after building site is installed, then gas cutting hole by hand, technique falls behind, the construction period is long, of poor quality.
My company adopts and utilizes computer round in factory to the tuyere flange hole on last furnace shell, flat digital controlled cutting machine cut hole, and perforate speed is fast, and quality is high.But because thickness of shell is large, opening diameter large, be out of shape when cutting and roll song and be difficult to control.Therefore, Deformation control when needing a kind of method to complete the flat-plate pore-opening cutting of furnace shell tuyere flange hole and to roll song, ensures the quality in tuyere flange hole.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of last furnace shell tuyere flange hole flat-plate pore-opening method, and distortion when controlling the flat-plate pore-opening cutting of furnace shell tuyere flange hole and roll song, ensures that furnace shell rolls Qu Zhiliang.
For achieving the above object, the present invention realizes by the following technical solutions:
Last furnace shell tuyere flange hole flat-plate pore-opening method, step is as follows:
1. steel plate is cut into several piece segmental pad, at corresponding blast-furnace tuyere position mark tuyere flange hole line of cut;
2. put by the furnace shell watt after cutting out in the enterprising perform hole cutting of Numerical control cutting machine platform, make to leave connecting band in the middle of the tuyere flange hole after cutting, each tuyere flange hole cutting sequence is:
1) cutting arc length AB=(1/3 ~ 1/4) π R, R at hole vertical center line 0 ° of positional symmetry is tuyere flange pore radius;
2) at hole vertical center line 180 ° of positional symmetry cutting arc length CD=(1/3 ~ 1/4) π R;
3) upwards offset (1/6 ~ 1/8) π R at hole horizontal center line, vertical center line symmetrical cutting straight line EF=(1/3 ~ 1/4) π R, R are tuyere flange pore radius;
4) (1/6 ~ 1/8) π R is offset downward at hole horizontal center line, symmetrical cutting straight line GH=(1/3 ~ 1/4) the π R of vertical center line;
5) light from E and cut to I point, cut to A point from the starting the arc of I point;
6) light from H and cut to L point, cut to D point from the starting the arc of L point;
7) light from F and cut to J point, cut to B point from the starting the arc of J point;
8) light from G and cut to K point, cut to C point from the starting the arc of K point;
3., after each furnace shell watt cutting hole, veneer reeling machine carries out roll bent camber;
4., after furnace shell rolls song, connecting band cuts away along tuyere flange hole line of cut by craft gas welding torch.
Compared with prior art, the invention has the beneficial effects as follows:
The reasonable layout cutting sequence of the present invention, controls the distortion in tuyere flange hole during cutting.Leave (1/3 ~ 1/4) π R wide connecting band during cutting tuyere flange hole, R is tuyere flange pore radius, reduces perforated area, controls the distortion after rolling song, ensure that furnace shell rolls Qu Zhiliang, meet tuyere flange hole tolerance area requirement.
Accompanying drawing explanation
Fig. 1 is furnace shell tuyere flange hole flat-plate pore-opening schematic diagram.
Fig. 2 is the sectional view of Fig. 1.
In figure: 1-furnace shell watt 2-tuyere flange hole 3-connecting band
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further illustrated:
Embodiment 1
As Fig. 1-2, No. 1 BF at AISC last furnace shell makes, and wherein the 5th band cone band is tuyere zone, thickness of shell 80mm, large mouth diameter 14880mm, osculum diameter 14280mm, point 10 pieces of watts of making, this band has 30 air ports, and every watt of furnace shell has 3 tuyere flange holes, and tuyere flange pore radius R is 640mm.
Last furnace shell tuyere flange hole flat-plate pore-opening method, step is as follows:
1. steel plate is cut into several piece segmental pad, at corresponding blast-furnace tuyere position mark tuyere flange hole line;
2. put the furnace shell after cutting out watt 1 in the enterprising perform hole cutting of Numerical control cutting machine platform, make to leave connecting band 3 in the middle of the tuyere flange hole 2 after cutting, each tuyere flange hole cutting sequence is:
1) at hole vertical center line 0 ° of positional symmetry cutting arc length AB=550mm;
2) at hole vertical center line 180 ° of positional symmetry cutting arc length CD=550mm;
3) upwards 260mm is offset at hole horizontal center line, the symmetrical cutting straight line EF=550mm of vertical center line;
4) 260mm is offset downward at hole horizontal center line, the symmetrical cutting straight line GH=550mm of vertical center line;
5) light from E and cut to I point, cut to A point from the starting the arc of I point;
6) light from H and cut to L point, cut to D point from the starting the arc of L point;
7) light from F and cut to J point, cut to B point from the starting the arc of J point;
8) light from G and cut to K point, cut to C point from the starting the arc of K point;
3., after each furnace shell watt cutting hole, veneer reeling machine carries out roll bent camber;
4., after Lu Ke Roll song, connecting band cuts away along tuyere flange hole line of cut by craft gas welding torch.
Furnace shell watt rolls and leaves connection bandwidth for (1/3 ~ 1/4) π R, R in the middle of bent front tuyere flange hole is tuyere flange pore radius, reduces perforated area, controls the distortion after rolling song, ensure that furnace shell rolls Qu Zhiliang.Meet tuyere flange hole tolerance area requirement.
Embodiment 2
AISC No.9 Blast Furnace furnace shell makes, and wherein the 5th band cone band is tuyere zone, thickness of shell 65mm, large mouth diameter 12900mm, osculum diameter 12100mm, point 7 pieces of watts of making, this band has 28 air ports, and every watt of furnace shell has 4 tuyere flange holes, and tuyere flange pore radius R is 540mm.
Last furnace shell tuyere flange hole flat-plate pore-opening method, step is as follows:
1. steel plate is cut into several piece segmental pad, at corresponding blast-furnace tuyere position mark tuyere flange hole line;
2. put the furnace shell after cutting out watt 1 in the enterprising perform hole cutting of Numerical control cutting machine platform, make to leave connecting band 3 in the middle of the tuyere flange hole 2 after cutting, each tuyere flange hole cutting sequence is:
1) at hole vertical center line 0 ° of positional symmetry cutting arc length AB=500mm;
2) at hole vertical center line 180 ° of positional symmetry cutting arc length CD=500mm;
3) upwards 240mm is offset at hole horizontal center line, the symmetrical cutting straight line EF=500mm of vertical center line;
4) 240mm is offset downward at hole horizontal center line, the symmetrical cutting straight line GH=500mm of vertical center line;
5) light from E and cut to I point, cut to A point from the starting the arc of I point;
6) light from H and cut to L point, cut to D point from the starting the arc of L point;
7) light from F and cut to J point, cut to B point from the starting the arc of J point;
8) light from G and cut to K point, cut to C point from the starting the arc of K point;
3., after each furnace shell watt cutting hole, veneer reeling machine carries out roll bent camber;
4., after Lu Ke Roll song, connecting band cuts away along tuyere flange hole line of cut by craft gas welding torch.
Furnace shell watt rolls and leaves connection bandwidth for (1/3 ~ 1/4) π R, R in the middle of bent front tuyere flange hole is tuyere flange pore radius, reduces perforated area, controls the distortion after rolling song, ensure that furnace shell rolls Qu Zhiliang.Meet tuyere flange hole tolerance area requirement.
Embodiment 3
Anshan iron and steel plant No. 7 last furnace shells make, and wherein the 5th band cone band is tuyere zone, thickness of shell 55mm, large mouth diameter 10800mm, osculum diameter 10100mm, point 6 pieces of watts of making, this band has 24 air ports, and every watt of furnace shell has 4 tuyere flange holes, and tuyere flange pore radius R is 510mm.
Last furnace shell tuyere flange hole flat-plate pore-opening method, step is as follows:
1. steel plate is cut into several piece segmental pad, at corresponding blast-furnace tuyere position mark tuyere flange hole line;
2. put the furnace shell after cutting out watt 1 in the enterprising perform hole cutting of Numerical control cutting machine platform, make to leave connecting band 3 in the middle of the tuyere flange hole 2 after cutting, each tuyere flange hole cutting sequence is:
1) at hole vertical center line 0 ° of positional symmetry cutting arc length AB=450mm;
2) at hole vertical center line 180 ° of positional symmetry cutting arc length CD=450mm;
3) upwards 210mm is offset at hole horizontal center line, the symmetrical cutting straight line EF=450mm of vertical center line;
4) 210mm is offset downward at hole horizontal center line, the symmetrical cutting straight line GH=450mm of vertical center line;
5) light from E and cut to I point, cut to A point from the starting the arc of I point;
6) light from H and cut to L point, cut to D point from the starting the arc of L point;
7) light from F and cut to J point, cut to B point from the starting the arc of J point;
8) light from G and cut to K point, cut to C point from the starting the arc of K point;
3., after each furnace shell watt cutting hole, veneer reeling machine carries out roll bent camber;
4., after Lu Ke Roll song, connecting band cuts away along tuyere flange hole line of cut by craft gas welding torch.
Furnace shell watt rolls and leaves connection bandwidth for (1/3 ~ 1/4) π R, R in the middle of bent front tuyere flange hole is tuyere flange pore radius, reduces perforated area, controls the distortion after rolling song, ensure that furnace shell rolls Qu Zhiliang.Meet tuyere flange hole tolerance area requirement.
Be only general principle of the present invention above, not impose any restrictions the present invention, the present invention of every foundation carries out equivalent variations and modification to it, all within the category of the art of this patent protection scheme.

Claims (1)

1. last furnace shell tuyere flange hole flat-plate pore-opening method, it is characterized in that, step is as follows:
1. steel plate is cut into several piece segmental pad, at corresponding blast-furnace tuyere position mark tuyere flange hole line of cut;
2. put by the furnace shell watt after cutting out in the enterprising perform hole cutting of Numerical control cutting machine platform, make to leave connecting band in the middle of the tuyere flange hole after cutting, each tuyere flange hole cutting sequence is:
1) cutting arc length AB=(1/3 ~ 1/4) π R, R at hole vertical center line 0 ° of positional symmetry is tuyere flange pore radius;
2) at hole vertical center line 180 ° of positional symmetry cutting arc length CD=(1/3 ~ 1/4) π R;
3) (1/6 ~ 1/8) π R is upwards offset at hole horizontal center line, symmetrical cutting straight line EF=(1/3 ~ 1/4) the π R of vertical center line;
4) (1/6 ~ 1/8) π R is offset downward at hole horizontal center line, symmetrical cutting straight line GH=(1/3 ~ 1/4) the π R of vertical center line;
5) light from E and cut to I point, cut to A point from the starting the arc of I point;
6) light from H and cut to L point, cut to D point from the starting the arc of L point;
7) light from F and cut to J point, cut to B point from the starting the arc of J point;
8) light from G and cut to K point, cut to C point from the starting the arc of K point;
3., after each furnace shell watt cutting hole, veneer reeling machine carries out roll bent camber;
4., after furnace shell rolls song, connecting band cuts away along tuyere flange hole line of cut by craft gas welding torch.
CN201610065941.2A 2016-01-29 2016-01-29 Last furnace shell tuyere flange hole plate boring method Active CN105537880B (en)

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CN201610065941.2A CN105537880B (en) 2016-01-29 2016-01-29 Last furnace shell tuyere flange hole plate boring method

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107498315A (en) * 2017-09-21 2017-12-22 南通如港船舶配套机械有限公司 A kind of marine shafting adpting flange processes mounting process
CN108372390A (en) * 2018-01-17 2018-08-07 熊朝光 The polyhedral manufacturing process of metallic plate and finished product
CN110625193A (en) * 2019-09-30 2019-12-31 中国船舶重工集团柴油机有限公司 Cutting method, system and processing system for air port of cylindrical scavenging air box

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182905A (en) * 1983-04-01 1984-10-17 Sumitomo Metal Ind Ltd Method for repairing fitting part of tuyere hardware
CN101474739A (en) * 2008-11-28 2009-07-08 北京首钢建设集团有限公司 Flat-plate pore-opening method on blast furnace shell
CN102513794A (en) * 2011-12-22 2012-06-27 太原重工股份有限公司 Method for bending and cutting plate with notch
CN104028955A (en) * 2014-03-10 2014-09-10 新兴能源装备股份有限公司 Method for numerical control forming of large quantity of holes in stainless steel cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182905A (en) * 1983-04-01 1984-10-17 Sumitomo Metal Ind Ltd Method for repairing fitting part of tuyere hardware
CN101474739A (en) * 2008-11-28 2009-07-08 北京首钢建设集团有限公司 Flat-plate pore-opening method on blast furnace shell
CN102513794A (en) * 2011-12-22 2012-06-27 太原重工股份有限公司 Method for bending and cutting plate with notch
CN104028955A (en) * 2014-03-10 2014-09-10 新兴能源装备股份有限公司 Method for numerical control forming of large quantity of holes in stainless steel cylinder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
许宝刚: "大型高炉炉壳的工厂制造", 《鞍钢技术》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107498315A (en) * 2017-09-21 2017-12-22 南通如港船舶配套机械有限公司 A kind of marine shafting adpting flange processes mounting process
CN108372390A (en) * 2018-01-17 2018-08-07 熊朝光 The polyhedral manufacturing process of metallic plate and finished product
CN110625193A (en) * 2019-09-30 2019-12-31 中国船舶重工集团柴油机有限公司 Cutting method, system and processing system for air port of cylindrical scavenging air box

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