CN107254559A - A kind of cooling wall and its processing method - Google Patents
A kind of cooling wall and its processing method Download PDFInfo
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- CN107254559A CN107254559A CN201710521657.6A CN201710521657A CN107254559A CN 107254559 A CN107254559 A CN 107254559A CN 201710521657 A CN201710521657 A CN 201710521657A CN 107254559 A CN107254559 A CN 107254559A
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- cooling
- water pipe
- cooling wall
- cooling water
- chill
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of cooling wall and its processing method, belong to cooling wall field.The processing technology of the present invention, comprises the following steps：First, cooling wall Wooden Pattern Making；2nd, sand mold making and the arrangement of cooling water pipe：Cooling wall wooden model is put into sandbox, jolt ramming sand molding, takes out cooling wall wooden model formation die cavity, cooling water pipe is arranged in the die cavity；Cooling water pipe includes the first cooling water pipe, the second cooling water pipe and the 3rd cooling water pipe；3rd, molten steel is injected into die cavity and starts casting；4th, it is cooled and shaped after casting.The present invention overcomes the shortcomings of that cooling water pipe burn through easily occurs for cooling wall, strengthen cooling effect by laying multilayer cooling tube in cooling wall, and process is strictly controlled, cooling water pipe burn through is effectively prevented, the technique effect of " molten without changing " and " seamless fusion " is reached.
Description
Technical field
The present invention relates to cooling wall technical field, more specifically to a kind of cooling wall and its processing method.
Background technology
It is a large amount of in blast furnace to be built using cooling walls, as blast furnace cooling stave of new generation cast steel cooling wall with it is current general
Compare, with elongation percentage is high, tensile strength is high, fusing point is high, thermal-shock resistance and overall lead all over the ductile iron cooling stave used
The advantages of good in thermal property.Cast-iron cooling wall matrix differs greatly with cooling water pipe material, is limited by basic material and casting technique
System, the air gap that there is 0.1~0.3mm between matrix and cooling water pipe, causes thermal resistance to increase.However, cast steel cooling wall matrix with
Cooling water pipe material is same or like, and it is seamless that special foundry engieering is integrated the outer wall of cooling water pipe and matrix fusion,
And inwall is non-fusible, indeformable.Cast steel cooling wall matrix combines together with cooling pipe, eliminates base in ductile iron cooling stave
Gap between body and cooling tube, reduces thermal resistance, so as to improve the service life of blast furnace.With machinery dissection and metallography microscope
Sem observation fuses juncture area air-gap-free and interlayer, and it is organized as metallurgical binding tissue.
The basic material of cast steel cooling wall is fusing point very high low-carbon alloy steel, typically all select it is identical with basic material or
Close mild steel hot rolled seamless steel tube is as cooling pipe, to obtain good heat-conducting effect.Due to the shape of cooling pipe
Complicated irregular shape is often designed to according to the specifically used occasion of cooling wall, so typically can only be using casting technique life
Production, but in casting process, even if cooling pipe temperature is reduced using types of cooling such as conventional air cooling, oil coolings, but by
It is very high in cast steel liquid steel temperature, still it is easy to cooling pipe is deformed and burn through, particularly may be in casting cycle
The danger that set off an explosion because the thermal current drastically expanded has little time discharge, this casting problem, which never has, for a long time obtains
Solve very well.At present, in the casting process of cast steel cooling wall, cooling water pipe burn through is prevented, and is made its " molten without changing ", is casting
The maximum difficult point in technique is made, anti-burn through measure mainly there are two kinds：
(1) cooling water pipe burn through is prevented from outside.Cooling water pipe burn through is prevented from outside, one layer can be welded outside water pipe
With type internal densener cage, or in water pipe appearance brushing heat insulating coat.Although such method anti-antipriming pipe can melt to a certain extent
Wear, but if design is improper, it will the fusion rate between cooling water pipe and cooling wall body is had a strong impact on, makes the radiating of water pipe
Ability is greatly reduced, and this also weakens the advantage of cast steel cooling wall good heat conductivity.
(2) cooling water pipe burn through is prevented from inside.From interior anti-antipriming pipe burn through, gas can be passed through inside cooling water pipe
Body/solid cooling medium.Ventilation can use nitrogen or other rare gas, and ventilation can prevent pipe inner wall from casting
It is oxidized in journey, and protects cooling water pipe to make its " molten without wearing ".The cooling water pipe of nearly all shape can use ventilation
Mode cool down, but ventilation needs extra aeration equipment, and all multi-parameter such as air pressure, the flow velocity when ventilating needs root
According to concrete condition, grope just draw repeatedly.It is that a kind of comparison is simple and can into cooling water pipe to pour into solid cooling medium
The method leaned on, the requirement of the solid dielectric to pouring into is：Heat storage capacity is big, there is stronger chilling action；Thermal coefficient of expansion is small, heat
Stability is good；Do not chemically react, do not generate gas；Non-fusible, adhesion tube wall, easy to clean.Usually using multiple material
Mix, still, the proportioning of solid cooling medium is most important for realization " molten without wearing ", and by the shadow of many factors
Ring, grope just draw repeatedly.
By patent retrieval, the existing related technical scheme of production method on cast steel cooling wall is disclosed.Such as China specially
Sharp application number：2014105920452, the applying date：On October 29th, 2014, invention and created name is：A kind of blast furnace is cold with cast steel
But wall and its manufacture method, its step is：Step one：One end of cooling water pipe before bend pipe is blocked, from the another of cooling water pipe
Load high temperature resistant filler in one end；The cooling water pipe loaded after high temperature resistant filler is pressed into elbow order on bending machine and carries out clod wash behaviour
Make；Step 2：The preparation of molding sand includes the preparation of facing sand and floor sand；Step 3: carrying out moulding using molding sand；Cast steel cooling wall
Molten steel tapping temperature of casting control is at 1610~1620 DEG C, and cast temperature is controlled within 1550~1560 DEG C；Step 4: follow-up
Processing.This application case causes cooling water pipe and cast steel cooling wall body is seamless fuses together, cold in high-temperature molten steel bag tip-off
But the tube wall of water pipe also will not burn through, but this application case needs to configure special high temperature resistant filler, cause production cost on
Rise, still desire to a kind of scheme more optimized to solve the problems, such as the burn through of cooling water pipe in industry.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome in the prior art blast furnace cooling stave easily occur cooling water pipe burn through, influence cooling
The deficiency of effect, by strictly controlling process, effectively prevents cooling water pipe there is provided a kind of cooling wall and its processing method
Burn through, reaches the technique effect of " molten without changing " and " seamless fusion ", the cooling effect of effective guarantee cooling wall.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of processing method of cooling wall of the present invention, comprises the following steps：
Step 1: cooling wall Wooden Pattern Making：Cooling wall wooden model is made according to the planform of cooling wall body；
Step 2: sand mold making and the arrangement of cooling water pipe：Cooling wall wooden model is put into sandbox, jolt ramming sand molding,
Cooling wall wooden model formation die cavity is then taken out, cooling water pipe is arranged in the die cavity；
Step 3: molten steel is injected into die cavity starts casting, molten steel flow direction is gradually to cast from bottom to top；
Step 4: being cooled and shaped after casting：20~24h of first natural cooling after casting terminates, then natural cooling 2 of unpacking~
3h, cooling wall sheet is body formed and takes out；
Step 5: carrying out sand removal processing to cooling wall body, remove surface and float sand；
Step 6: carrying out pressure testing test and the detection of logical ball to cooling wall body.
Further, the medial surface length and width size for offering embedding brick groove in step one on cooling wall wooden model compares cooling wall
Body is big by 1.6%~1.8%, and lateral surface length and width size of the cooling wall wooden model away from embedding brick groove is bigger than cooling wall body by 2.1%
~2.2%.
Further, the cooling water pipe bottom laid in step 2 spaced points weldering along its length is fixed with chill.
Further, first calm 3~5min in step 3 before molten steel casting.
Further, chill is cuboid laminated structure, and monolithic length is 5~6cm, and width is 4~5cm, cooling water
The total length L 1 of pipe bottom chill is the 1/35~1/20 of cooling water pipe development length L2.
Further, the thickness H1 of chill is the 1/2~2/3 of cooling water pipe wall thickness H 2.
Further, the chill of cooling water pipe bottom is obliquely installed, and angle α is 5 °~10 ° between horizontal plane.
Further, the adjacent two pieces of chill incline directions in cooling water pipe bottom are relative, and multi-disc chill is under cooling water pipe
Portion forms interval inverse type and set.
Further, molten steel cast temperature is 1500 DEG C~1580 DEG C in step 3.
A kind of cooling wall of the present invention, including cooling wall body, the cooling wall body use processing method as described above
It is made.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result：
(1) processing method of a kind of cooling wall of the invention, by the ingenious spot welding sheet chill in cooling water pipe bottom, making
Factor etc. coordinates with high temperature resistant filler in cast temperature, cooling water pipe etc. for it, right while ensureing that chill is fully completely melt
Cooling water pipe tube wall also has good protective effect, makes it molten without changing, good seamless between final cooling wall body
Fusion, has ensured the good cooling effect of cooling wall body.
(2) a kind of processing method of cooling wall of the invention, chill is cuboid laminated structure, and the thickness H1 of chill is cold
But the 1/2~2/3 of water pipe wall thickness H2, the total length L 1 of cooling water pipe bottom chill for cooling water pipe development length L2 1/35~
1/20, the risk for being difficult between molten steel a period of time be completely melt is largely avoid using this spacer sheet formula structure, is protected
Barrier molten steel can melt chill completely, be avoided that cooling water pipe burn through again, reach " molten without changing " and " seamless molten
The good result of conjunction ".
(3) processing method of a kind of cooling wall of the invention, the chill of cooling water pipe bottom is obliquely installed, and and horizontal plane
Between angle α be 5 °~10 °, adjacent two pieces of chill incline directions are relative, and it is anti-that multi-disc chill forms interval in cooling water pipe bottom
Set to formula so that when molten steel is gradually stretched upwards, gradually melted, on the one hand had along the incline direction ecto-entad of chill
Help accelerate chill to be completely melt, the temperature of another aspect cooling water pipe bottom molten steel in the width direction is interior in a big way can
Gradually formula cooling is obtained, molten steel most top cooling water pipe burn through at last is prevented, especially avoids to cooling water pipe bottom and side wall
The high temperature at edge washes away.
Brief description of the drawings
Fig. 1 is a kind of processing method flow chart of cooling wall of the present invention；
Fig. 2 is the position view of cooling water pipe lower section chill in the present invention；
Fig. 3 is the arrangement schematic diagram of cooling water pipe lower section chill in the present invention；
Fig. 4 detects view for the pressure testing of cooling wall in the present invention；
Fig. 5 is Fig. 4 left view schematic diagram；
Fig. 6 is the structural representation of manometric module in the present invention.
Label declaration in schematic diagram：1st, cooling wall body；101st, embedding brick groove；102nd, the first cooling water pipe；111st, chill；
2nd, manometric module；201st, retainer ring；202nd, part is held out against；203rd, connecting rod；204th, top flat；205th, gland；206th, compressing member.
Embodiment
To further appreciate that present disclosure, with reference to accompanying drawing, the present invention is described in detail.
With reference to embodiment, the invention will be further described.
Embodiment 1
A kind of processing method of cooling wall of the present embodiment, comprises the following steps：
Step 1: cooling wall Wooden Pattern Making and detection：Cooling wall wooden model is made according to the planform of cooling wall body 1,
And the shape and size precision of the cooling wall wooden model is detected, selection certified products enter subsequent processing；The knot of cooling wall body 1
Structure is as shown in figure 4, for by orientation in Fig. 4, and the bottom surface of the bottom of cooling wall body 1 is inward facing surface, cooling wall body 1 it is interior
Embedding brick groove 101 is offered on side, for inlaying refractory brick；It should be noted that offering embedding brick groove 101 on cooling wall wooden model
Medial surface length and width overall dimensions than cooling wall body 1 big 1.6%, lateral surface of the cooling wall wooden model away from embedding brick groove 101 is long
Wide overall dimensions are than cooling wall body 1 big 2.1%, and the pre-expanded design of cooling wall wooden model effectively prevent follow-up casting and cold
But cooling wall sheet is ensured during because the problem of the dimensional accuracy of cooling wall body 1 is not high caused by the contraction of molten steel, contributing to
The machining accuracy of body 1.
Step 2: sand mold making and the arrangement of cooling water pipe：The cooling wall wooden model for detecting qualified is put into suitable sandbox
In, and corresponding runner system is set, then jolt ramming sand molding, takes out cooling wall wooden model and is then formed and cooling wall in sandbox
The shape identical die cavity of body 1, cooling water pipe is arranged in the die cavity, being had been filled with inside cooling water pipe can be resistant to elevated temperatures
Inserts, can specifically fill chrome ore；The cooling water pipe of the present embodiment can be illustrated in figure 4 list using single or multiple lift design
Layer pipe design, including the first cooling water pipe 102.
Step 3: after cooling water pipe arrangement terminates, runner system injects molten steel into die cavity and starts casting, is communicated with die cavity
The casting gate of point running channel be located at the bottom of die cavity, molten steel flow direction is gradually casts from bottom to top in die cavity, such as Fig. 2 institutes
It is molten steel flow casting direction to show the direction of arrow；Cast temperature control is 1500 °, and cast temperature is too high, and molten steel heat is excessive, pole
Easily by cooling water pipe burn through, and cast temperature is too low, and molten steel heat is too small, and not fusing or fusing for cooling water pipe is easily caused again
It is insufficient；Casting molten steel goes out (standing) 3min that first calmed after casting ladle, then just initially enters running channel casting, can effectively be vented simultaneously
By impurity sedimentation, follow-up casting flaw is reduced；Using the casting mode of " two is slow, middle fast " during casting, first open at a slow speed and pour, when
When molten steel is close to cooling water pipe position, accelerates casting, allow molten steel quickly to wrap up cooling water pipe, it is to avoid produce cold shut phenomenon, work as steel
When liquid liquid level exceedes cooling water pipe, gradually reduction of speed is cast, after entering to molten steel in rising head, is changed by rising head after-teeming until casting is tied
Beam.
What deserves to be explained is, although in cooling water pipe filled with chrome ore etc can high temperature resistant filler, but molten steel high temperature
Still easily make during casting cooling water pipe deform even burn through, especially cooling water pipe snakelike arrangement when, its is complex-shaped,
Angle of bend is big, is more easy to be deformed burn through problem when being washed away by molten steel, is to be found all the time to cooling water pipe energy in the industry
The casting mode more preferably protected.
The present embodiment is the high temperature burn through for avoiding molten steel to cooling water pipe, is added using in the bottom of the first cooling water pipe 102
The mode of chill 111 is suitably cooled come the molten steel temperature to close cooling water pipe, alleviates its height to cooling water pipe
Temperature is washed away.
Being directly welded at cooling water pipe outer surface using chill in industry and cast in fact early has application, but application effect
Very different, each side factor such as set-up mode, arrangement position of chill all has a significant impact to final casting effect, OK
Also often occur in the industry chill melted in casting cycle not exclusively, destruction cooling water pipe and cooling wall overall mechanical properties,
The problems such as promoting air gap generation, severe exacerbation cooling wall heat transfer property, many problems are caused to production practices.Inventor is based on this
It is directed to, to how accurately to control research of the chill to molten steel cooling effect, ensureing that molten steel can melt chill completely always,
It is avoided that cooling water pipe burn through again, reaches the good result of " molten without changing " and " seamless fusion ".By diving for many years
The heart is studied and practical proof, and inventor has pleasantly surprised discovery finally！
Chill 111 in the present embodiment is laminated structure, specially cuboid laminated structure (such as Fig. 3), the thickness of chill 111
It is the 1/2 of cooling water pipe wall thickness H 2 to spend H1, and the monolithic length of chill 111 of rectangular body plate shape is 6cm, and width is 4cm, cooling water pipe
Bottom uniform intervals extend length provided with least one block chill 111, the total length L 1 of cooling water pipe bottom chill 111 for cooling water pipe
The 1/20 of L2 is spent, as shown in figure 3, the flat segments base point of the first cooling water pipe 102 is welded with 4 chills 111.Using this interval
Sheet-like structure largely avoid the risk for being difficult between molten steel a period of time be completely melt, inventor's multiple authentication finds this
Planting when chip-size chill 111 is cast can thoroughly melt and noresidue.
Be further to ensure chill 111 to the uniformity cooling effect of molten steel, prevent cooling water pipe occur section type burn through,
The not first-class phenomenon of state is fused with cooling wall body 1, as shown in Fig. 2 the chill 111 of cooling water pipe bottom is obliquely installed, and with
Angle α is 5 ° between horizontal plane, and as shown in figure 3, adjacent two blocks of chills 111 incline direction in cooling water pipe bottom is relative, multi-disc
Chill 111 forms interval inverse type in cooling water pipe bottom and set.Chill 111 is obliquely installed so that molten steel is gradually stretched upwards
When, gradually melted along the incline direction ecto-entad of chill 111, on the one hand help speed up being completely melt for chill 111,
The temperature of another aspect cooling water pipe bottom (left and right directions in Fig. 2) molten steel in the width direction is interior in a big way can be obtained gradually
Formula cools, and prevents molten steel most top cooling water pipe burn through at last, especially avoids the height to cooling water pipe bottom and sidewall edge
Temperature is washed away；And multi-disc chill 111 forms interval inverse type in cooling water pipe bottom and sets (as shown in Figure 3), both prevents two panels cold
Iron 111 overlaps influence, and it is completely melt, and carries out appropriate temperature drop to the molten steel of cooling water pipe both sides width, and molten steel exists
Temperature drop uniformity and temperature drop scope all make moderate progress in the range of below cooling water pipe, to realizing the molten effect without wearing of cooling water pipe
It is very important.
The present embodiment is by the ingenious spot welding sheet chill 111 in cooling water pipe bottom, making itself and cast temperature, cooling water pipe
Factors such as interior high temperature resistant filler etc. coordinate, and while ensureing that chill 111 is fully completely melt, also have to cooling water pipe tube wall
Good protective effect, makes it molten without changing, good seamless fusion, has ensured cooling wall between final cooling wall body 1
The good cooling effect of body 1.
Step 4: being cooled and shaped after casting：Casting first natural cooling 24h after terminating, then the natural cooling 2h that unpacks, so as to disappear
Except casting internal stress, thinning microstructure, and prevent cooling wall body 1 from deforming, after shaping, take out cooling wall body 1 and do follow-up clear
Reason.
Step 5: carrying out sand removal processing to cooling wall body 1, remove surface and float sand, and reclaim filling in cooling water pipe
Chrome ore；
Step 6: being carried out to cooling wall body 1 after pressure testing test and the detection of logical ball, test passes again to cooling wall body 1
Finishing processing is carried out, its surface quality is improved, finally gives a kind of cooling wall.
When crossing ball test, 0.75~0.76 times of a diameter of cooling water pipe internal diameter of ball, ball is put into cooling water pipe one end,
Divulged information with high-pressure air hose ball, and ball is flown out from the other end of cooling water pipe as qualified.The cooling wall that the present embodiment is processed
The qualification rate of function admirable, pressure testing and ball test excessively is close to 100%, and operating personnel does not have found cooling through a large amount of practical proofs
Water pipe burn through or drainage, application security obtain effective guarantee.
The cooling wall that the present embodiment is processed, including cooling wall body 1, as shown in figure 4, the medial surface of cooling wall body 1
Offer and then offer corresponding water inlet respectively on the embedding brick groove 101 for inlaying refractory brick, the lateral surface of cooling wall body 1
And delivery port, the corresponding outside that cooling wall body 1 is extended to by inlet/outlet in end of internal cooling water pipe, pressure testing test
Shi Ze is carried out using manometric module 2, and two manometric modules 2 coordinate to be used as one group, is set in as shown in figure 5, corresponding to respectively
The water inlet end of piece cooling water pipe and water side, by detecting that the pressure drop of water inlet end and water side is judged.
As shown in fig. 6, manometric module 2 includes the retainer ring 201 being set on the cooling water pipe of outside, the side of retainer ring 201
Circumferentially surrounded on wall provided with part 202 (can specifically use puller bolt) is held out against, the top of retainer ring 201 is solid by connecting rod 203
Gland 205 is connected with, the top of gland 205 is provided with compressing member 206 (can specifically use hold-down bolt), and the lower section of gland 205 is then provided with top
Manometric module 2, is set on cooling water pipe by piece 204 when using, and holds out against part 202 and holds out against cooling water pipe side wall, top flat from multidirectional
204 are pressed in water inlet end/water side of cooling water pipe and are compressed by compressing member 206, are additionally provided with sealing gasket in top flat 204, are pressed in
The top flat 204 of cooling water pipe water inlet end is connected with high-pressure water pipe, passes through high-pressure water pipe water filling into the cooling water pipe, water under high pressure
Pipe is provided with pressure gauge；The top flat 204 for being pressed in the cooling water pipe water side is then connected with drainpipe, it is notable that this reality
Apply it is adjacent on the drainpipe of this in example be provided with two load cells, and two load cells respectively with upper mechatronics.Specifically,
The load cell can use pressure transmitter, and pressure signal is converted into analog signal and host computer is transferred to, host computer will connect
The signal of receipts is shown and automatic business processing, and the hydraulic pressure of the cooling water pipe water inlet end and water side is compared, once pressure
Drop then illustrates inside cooling water pipe to have in the anomalies such as leak, host computer beyond certain limit is additionally provided with warning device, once
Generation is abnormal then and alarm, reminds operating personnel.The present embodiment passes through the conversion of pressure signal and the automation number of host computer
According to processing, reading/calculating pressure data is directly removed without operating personnel, labor intensity is both alleviated, be turn avoid because of people's part work and part study
Detection error caused by mistake is taken/calculated, accuracy of detection is improved.
The present embodiment sets two load cells on drainpipe, can be greatly compared with the single load cell of traditional setting
Ground improves the accuracy of pressure testing test, is easy to find whether two load cells are in normal operating conditions, two surveys in time
When pressing the pressure difference of element beyond certain limit, then explanation has load cell to be in abnormality, now can be to load cell
Accuracy carries out detection confirmation, can so be prevented effectively from detection caused by damaging not discovery in time because of single load cell and miss
Difference, two load cells are set jointly can also can still keep normal detection when a certain load cell is damaged, and not influence detection
Progress.
Embodiment 2
A kind of processing method of the cooling wall of the present embodiment, basic be the same as Example 1, except that：
The medial surface length and width overall dimensions that embedding brick groove 101 is offered on cooling wall wooden model in the present embodiment step one compare
Cooling wall body 1 big 1.8%, lateral surface length and width overall dimensions of the cooling wall wooden model away from embedding brick groove 101 are than cooling wall body 1
It is big by 2.2%.
The thickness H1 of chill 111 is the 2/3 of cooling water pipe wall thickness H 2 in the present embodiment, and the chill 111 of rectangular body plate shape is single
Leaf length is 5cm, and width is 5cm, and the total length L 1 of cooling water pipe bottom chill 111 is the 1/ of cooling water pipe development length L2
35, the chill 111 of cooling water pipe bottom is obliquely installed, and angle α is 10 ° between horizontal plane.
First calm 5min in the present embodiment step 3 before molten steel casting, and molten steel cast temperature is 1580 DEG C.
First natural cooling 20h after casting terminates in the present embodiment step 4, then the natural cooling 3h that unpacks.
Embodiment 3
A kind of processing method of the cooling wall of the present embodiment, basic be the same as Example 1, except that：
The medial surface length and width overall dimensions that embedding brick groove 101 is offered on cooling wall wooden model in the present embodiment step one compare
Cooling wall body 1 big 1.7%, lateral surface length and width overall dimensions of the cooling wall wooden model away from embedding brick groove 101 are than cooling wall body 1
It is big by 2.2%.
The monolithic length of chill 111 of rectangular body plate shape is 5.5cm in the present embodiment, and width is 4.5cm, cooling water pipe bottom
The total length L 1 of chill 111 is the 1/30 of cooling water pipe development length L2, and the chill 111 of cooling water pipe bottom is obliquely installed, and
Angle α is 8 ° between horizontal plane.
First calm 4min in the present embodiment step 3 before molten steel casting, and molten steel cast temperature is 1550 DEG C.
First natural cooling 22h after casting terminates in the present embodiment step 4, then the natural cooling 2.5h that unpacks.
Schematical above that the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by it, without departing from the spirit of the invention, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of processing method of cooling wall, it is characterised in that comprise the following steps：
Step 1: cooling wall Wooden Pattern Making：Cooling wall wooden model is made according to the planform of cooling wall body (1)；
Step 2: sand mold making and the arrangement of cooling water pipe：Cooling wall wooden model is put into sandbox, jolt ramming sand molding, then
Cooling wall wooden model formation die cavity is taken out, cooling water pipe is arranged in the die cavity；
Step 3: molten steel is injected into die cavity starts casting, molten steel flow direction is gradually to cast from bottom to top；
Step 4: being cooled and shaped after casting：Casting first 20~24h of natural cooling after terminating, then the natural cooling 2~3h of unpacking are cold
But wall body (1) is molded and taken out；
Step 5: carrying out sand removal processing to cooling wall body (1), remove surface and float sand；
Step 6: carrying out pressure testing test and the detection of logical ball to cooling wall body (1).
2. a kind of processing method of cooling wall according to claim 1, it is characterised in that：In step one on cooling wall wooden model
The medial surface length and width size for offering embedding brick groove (101) is bigger by 1.6%~1.8% than cooling wall body (1), and cooling wall wooden model is remote
Lateral surface length and width size from embedding brick groove (101) is bigger by 2.1%~2.2% than cooling wall body (1).
3. a kind of processing method of cooling wall according to claim 1, it is characterised in that：The cooling water laid in step 2
The spaced points weldering along its length of pipe bottom is fixed with chill (111).
4. a kind of processing method of cooling wall according to claim 1, it is characterised in that：In step 3 before molten steel casting first
Calm 3~5min.
5. a kind of processing method of cooling wall according to claim 3, it is characterised in that：Chill (111) is cuboid piece
Shape structure, monolithic length is 5~6cm, and width is 4~5cm, and the total length L 1 of cooling water pipe bottom chill (111) is cooling water
The 1/35~1/20 of pipe development length L2.
6. a kind of processing method of cooling wall according to claim 5, it is characterised in that：The thickness H1 of chill (111) is
The 1/2~2/3 of cooling water pipe wall thickness H 2.
7. a kind of processing method of cooling wall according to claim 5, it is characterised in that：The chill of cooling water pipe bottom
(111) it is obliquely installed, and angle α is 5 °~10 ° between horizontal plane.
8. a kind of processing method of cooling wall according to claim 7, it is characterised in that：Cooling water pipe bottom is adjacent two pieces
Chill (111) incline direction is relative, and multi-disc chill (111) forms interval inverse type in cooling water pipe bottom and set.
9. a kind of processing method of cooling wall according to any one of claim 1~8, it is characterised in that：Steel in step 3
Liquid cast temperature is 1500 DEG C~1580 DEG C.
10. a kind of cooling wall, including cooling wall body (1), it is characterised in that：The cooling wall body (1) is using such as claim 1
Processing method described in~9 any one is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521657.6A CN107254559B (en) | 2017-06-30 | 2017-06-30 | A kind of cooling wall and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710521657.6A CN107254559B (en) | 2017-06-30 | 2017-06-30 | A kind of cooling wall and its processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111100962A (en) * | 2020-01-09 | 2020-05-05 | 鞍钢重型机械有限责任公司 | Blast furnace cooling wall with detachable lifting ring and preparation method thereof |
| CN114959140A (en) * | 2022-07-02 | 2022-08-30 | 南京金桓电子科技有限公司 | Integrated seamless cooling wall for blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111100962A (en) * | 2020-01-09 | 2020-05-05 | 鞍钢重型机械有限责任公司 | Blast furnace cooling wall with detachable lifting ring and preparation method thereof |
| CN114959140A (en) * | 2022-07-02 | 2022-08-30 | 南京金桓电子科技有限公司 | Integrated seamless cooling wall for blast furnace |
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| CN107254559B (en) | 2018-12-04 |
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Denomination of invention: Cooling stave and its processing method Effective date of registration: 20210909 Granted publication date: 20181204 Pledgee: Ma'anshan branch of Bank of China Ltd. Pledgor: Ma'anshan Runtong Heavy Industry Technology Co.,Ltd. Registration number: Y2021980009025 |
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