CN107254559A - A kind of cooling wall and its processing method - Google Patents

A kind of cooling wall and its processing method Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
cooling
water pipe
cooling wall
cooling water
chill
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.)
Granted
Application number
CN201710521657.6A
Other languages
Chinese (zh)
Other versions
CN107254559B (en
Inventor
朱童斌
李以则
庆辉
李振东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ma'anshan Runtong Heavy Industry Technology Co.,Ltd.
Original Assignee
MA'ANSHAN RUNTONG METALLURGICAL MATERIAL CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MA'ANSHAN RUNTONG METALLURGICAL MATERIAL CO Ltd filed Critical MA'ANSHAN RUNTONG METALLURGICAL MATERIAL CO Ltd
Priority to CN201710521657.6A priority Critical patent/CN107254559B/en
Publication of CN107254559A publication Critical patent/CN107254559A/en
Application granted granted Critical
Publication of CN107254559B publication Critical patent/CN107254559B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/10Cooling; Devices therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/02Sand moulds or like moulds for shaped castings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/24Moulds for peculiarly-shaped castings for hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04Influencing the temperature of the metal, e.g. by heating or cooling the mould

Landscapes

  • 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

A kind of cooling wall and its processing method
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.
CN201710521657.6A 2017-06-30 2017-06-30 A kind of cooling wall and its processing method Active CN107254559B (en)

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

Publications (2)

Publication Number Publication Date
CN107254559A true CN107254559A (en) 2017-10-17
CN107254559B CN107254559B (en) 2018-12-04

Family

ID=60023603

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710521657.6A Active CN107254559B (en) 2017-06-30 2017-06-30 A kind of cooling wall and its processing method

Country Status (1)

Country Link
CN (1) CN107254559B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1380154A (en) * 2002-02-09 2002-11-20 安阳钢铁集团有限责任公司 Production method of built-in water-cooling channel cast steel component
CN2527568Y (en) * 2002-01-25 2002-12-25 安阳钢铁集团有限责任公司 Cast steel cooling wall for blast furnace
CN1422712A (en) * 2001-12-14 2003-06-11 钢铁研究总院 Non-thermal-resistance cast steel cooling wall and casting method
CN1869568A (en) * 2006-03-31 2006-11-29 南京钢铁联合有限公司 Low thermal resistance cast-iron cooling wall and manufacturing method thereof
CN101007341A (en) * 2007-01-26 2007-08-01 李立 Spring chill clamp for casting and its manufacturing technology
CN104293994A (en) * 2014-10-29 2015-01-21 马鞍山市润通冶金材料有限公司 Cast steel cooling wall for blast furnace and manufacturing method for cast steel cooling wall

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1422712A (en) * 2001-12-14 2003-06-11 钢铁研究总院 Non-thermal-resistance cast steel cooling wall and casting method
CN2527568Y (en) * 2002-01-25 2002-12-25 安阳钢铁集团有限责任公司 Cast steel cooling wall for blast furnace
CN1380154A (en) * 2002-02-09 2002-11-20 安阳钢铁集团有限责任公司 Production method of built-in water-cooling channel cast steel component
CN1869568A (en) * 2006-03-31 2006-11-29 南京钢铁联合有限公司 Low thermal resistance cast-iron cooling wall and manufacturing method thereof
CN101007341A (en) * 2007-01-26 2007-08-01 李立 Spring chill clamp for casting and its manufacturing technology
CN104293994A (en) * 2014-10-29 2015-01-21 马鞍山市润通冶金材料有限公司 Cast steel cooling wall for blast furnace and manufacturing method for cast steel cooling wall

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李小静等: "马钢开发铸钢冷却壁研究", 《钢铁》 *

Cited By (2)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
CN107254559B (en) 2018-12-04

Similar Documents

Publication Publication Date Title
CN102019353B (en) Precision casting molding method for complex thin-walled member
US8096346B2 (en) Method for casting high-power wind turbine base with ductile iron
CN104399881B (en) The casting method of low-speed diesel for large-bore vessel bearing block steel-casting
CN100525961C (en) Macrotype metal mold system for recovering thermal energy by cooling water
CN104475693A (en) Reduction casting compositing method and device for large iron ingots
CN107254559A (en) A kind of cooling wall and its processing method
CN107083462B (en) A kind of blast furnace cooling stave and its processing technology that multilayer is cooling
CN101342586B (en) Equipment and process for casting multi-branch steel ingot with vacuum spill method and liquid steel
CN105458225B (en) A kind of bimetallic alloy hammers casting method into shape
CN104858365A (en) Integral casting production method of water-cooled furnace mouth
CN109719241B (en) Short-process casting and forging integrated process for steel
CN110918923B (en) Casting process of sequential directional solidification double-layer conical shell structure casting
CN201127978Y (en) Large-sized water cooling heat energy recovery metal mold system
CN203155993U (en) Exhaust type aluminum die-casting die
CN1028726C (en) Casting method for reinforced medium cast tube
CN112906187B (en) Casting process of pump body of double suction pump
CN107716860A (en) A kind of coke guide side plate lost foam casting process method
CN204381354U (en) A kind of external refining ladle
CN101480710B (en) Method for producing internally casting cooling water pipe melt-through-preventing high alloy cast steel
CN111822686A (en) Die casting method for continuous casting tundish cover and manufacturing die thereof
JP5352785B2 (en) Cast iron casting method, feeder, mold and mold making method
CN203155999U (en) Heat preservation type aluminum die-casting die
CN203155995U (en) Water-cooled aluminum die casting mold
CN103008626B (en) For the method for the high temperate zone liquid core shake out of large extra thick plate blank
CN104353820B (en) A kind of hot-metal bottle permanent layer manufacture method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address

Address after: 243000 Anhui province Ma'anshan City Mountain Industrial Zone

Patentee after: Ma'anshan Runtong Heavy Industry Technology Co.,Ltd.

Address before: No. 118 Anhui city of Ma'anshan province ginkgo Avenue 243000 Cihu hi tech Industrial Development Zone

Patentee before: MAANSHAN RUNTONG METALLURGY MATERIAL Co.,Ltd.

CP03 Change of name, title or address
PE01 Entry into force of the registration of the contract for pledge of patent right

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

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A kind of cooling wall and its processing method

Effective date of registration: 20220830

Granted publication date: 20181204

Pledgee: Ma'anshan branch of Bank of China Ltd.

Pledgor: Ma'anshan Runtong Heavy Industry Technology Co.,Ltd.

Registration number: Y2022980014102

PE01 Entry into force of the registration of the contract for pledge of patent right