CN1715449A - Boiler plate heating device and method - Google Patents
Boiler plate heating device and method Download PDFInfo
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- CN1715449A CN1715449A CN 200510073074 CN200510073074A CN1715449A CN 1715449 A CN1715449 A CN 1715449A CN 200510073074 CN200510073074 CN 200510073074 CN 200510073074 A CN200510073074 A CN 200510073074A CN 1715449 A CN1715449 A CN 1715449A
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Abstract
To provide a boiler panel having improved straightness and flatness. When an alloy coating 14 formed on the single face of the boiler panel 10 with flame coating is welded thereto in a moving heating method, the panel 10 is pulled in a direction Z of the vertical length of a moving inductor 25 to correct the deformation of the panel and a lined position forcing cylinder 21 is used for restricting the displacement of the panel 10 in two-axial directions X, Y intersecting the direction Z at a number of points. The straightness and flatness of the boiler panel 10 are improved by melting treatment while correcting the deformation of the boiler panel, without damaging the alloy coating 14.
Description
Technical field
The present invention relates to boiler plate, for purposes such as the depositions of single face alloy covering disposed thereon and with the manufacture method of mobile type of heating its boiler plate heating device that heats and alloy covering boiler plate.
Boiler plate is the sheet material one tubing composite sheet that is used to make the stove housing of being furnished with cooling water channel on the various boilers, and many sheet material is welded to connect in length and breadth and constitutes the stove housing.
On boiler plate,, on its one side, be coated with the self-dissolving alloy of nickel etc. for improving the weather resistance of stove housing inner face.
The alloy covering of boiler plate, in order to form expeditiously, utilize the spraying plating operation of carrying out earlier and after the deposition heating process (melting treatment operation) of carrying out and forming.That is, carry out at first in the spraying plating operation forming the alloy material of usefulness, then in deposition heating process (melting treatment operation), the alloy covering being heated to the mobile heating of fusion temp at spraying plating top covering on the whole zone of the one side of boiler plate or on the major part of one side.
Background technology
At first, if to compare the example of simple structure and the more boi1er tube of actual usage quantity with boiler plate, the operating temperature of boiler with compare recently low, and the so not cruel epoch of the ablation corrosive environment in the stove, general use-pattern all is that the boiler steel pipe (low alloy steel) that will consider high temperature the making property relevant with mechanical characteristics directly uses with exposed state.In requiring corrosion proof purposes, use stainless steel tube, even used the titanium pipe, so but fail to be widely used because price is high.
In recent years, the boiler of form of destroying the heat energy recycle of rubbish is increased, therefore, produced the problem that causes ablation (wearing and tearing) because of the incendiary coal dust especially, as the countermeasure to this problem, the way of implementing the spraying plating coating of the good self-dissolving alloy of wearability begins to be widely used.
But above-mentioned self-dissolving alloy covering is that (that is, it is a porous matter, has the pore that leads to mother metal for example forming the covering that promptly directly uses the back by HVOF (High Velocity OxygenFuel) coating machine spraying plating.Call " not fusion covering " in the following text.), as in other purposes (for example metal sheet is handled line roller class), adopting mostly, (this is to be changed into from porous to knit compact substance to the self-dissolving alloy covering of enforcement melting treatment after spraying plating, there has not been above-mentioned pore, become the covering of the isolated function of the sufficient environment of performance, i.e. the exemplary of " deposition covering ".) application very rare.
As the rarely found reason of application to the deposition covering of the self-dissolving alloy of boi1er tube, be since boi1er tube when soldered connection is used, rapid local heating during easily because of welding operation produces the thermal shocking slight crack on the deposition covering, therefore just require pipe integral after the preheating, is being utilized the so especially cause of the operation of difficulty of welded joint with the pyritous pipe in stove.
Yet, in recent boiler, be accompanied by requirement for the high-temp combustion of the innoxious purpose of exhaust, be not only ablation, it is very serious that the corrosive problem also becomes, and arrived the deposition covering of boiler is used, and with the such form of the supply of prefabrication clad material, the situation that is supposed to further.
As one of them example, announced the formation of on boi1er tube, using the deposition covering of self-dissolving alloy in the patent documentation 1 (spy opens flat 10-170194 communique).And, the not spraying plating portion about 50mm is set on this has adopted end at boi1er tube, with this part as the structure that connects surplus (the 8th page of the 4th hurdle the 15th～16 row of above-mentioned communique).In addition,, adopted after welding, substituted covering and the measure (its 4th hurdle 24～26 row) of setting-in backplate material in above-mentioned not spraying plating portion.Above-mentioned processing, because need order backplate material with good ablation resistance (for example oxidation aluminum etc.) especially, perhaps need be in the setting-in operation in the narrow boiler, so need the buying in advance of the expensive and goods, materials and equipments of contract for labour and materials.
In addition, after the spraying plating cladding is not being constructed the site welding connection with prefabricate self-dissolving alloy, have to consider to implement the method for the melting treatment of being undertaken by induction heating etc. in this place, but because the space is narrow and small or with the heating difficulty of the matching part of other parts etc., a thereby difficult problem especially.
By the way, the melting treatment of self-dissolving alloy if not all while fusions or same direction fusion, then can produce the reheat crackle, and therefore when implementing in this place, induction heating is indispensable.
Next, single face alloy covering boiler plate (boiler stove plate) as the main heat treated object of the present invention is described.Fig. 5 represents its structure, (a) be the outside drawing of non-covering face (alloy material is plating surface not), (b) be the outside drawing of covering face (alloy material plating surface), (c) be the amplification outside drawing of the two end portions of covering face, (d) be its end view drawing, (e) being the enlarged view in the bight of covering face, (f) is its end view drawing.This boiler plate 10, be on the one side of steel sheet material 11 (metal mother metal), to form alloy covering 14 and the boiler plate that another side kept the mother metal former state, when the assembling of stove housing, at the scene many pieces are joined end to end, adjacent end face is welded to one another couples together.
Promptly; steel sheet material 11 (sheet material-tubing composite sheet); be in order to constitute the fundamental unit of the stove housing of being furnished with cooling water channel; and will constitute the pipe portion 12 (tubing) of cooling water channel and board 18 (sheet material) alternately configured (being 5 and 6 pieces in the illustrated embodiment) of formation linking part; by being welded to connect etc. and closely connect to, and then, for ablation resistance; on the one side that constitutes the stove inwall (needing protection portion), formation constitutes covering 14 by alloy material on the whole zone of cardinal principle.Alloy covering 14 uses less expensive nickel self-dissolving alloy material mostly, constructs with high efficiency sputtering process.Under the situation of general boiler plate, the size length of steel sheet material 11 is about 4000～6000mm, and wide is about 400～500mm, and the bore of pipe portion 12 is about 25～75mm, and its wall thickness is about 3～7mm, and the thickness of board 13 is about 3～7mm.
Like this, because under the situation of boiler plate, it is the composite structure that tubing and sheet material alternately configured are formed, and (0.5m * 6m) for example is so the quoting of accessory of the practicality suitable with above-mentioned backplate under the situation of boi1er tube is a difficult problem more to be generally large size; In addition, be accompanied by the melting treatment after the spraying plating in addition and the problem of the shape distortion of the complexity of coming (for example refer to Patent Document 2 or patent documentation 3), thereby have the such problem of utilization itself that is difficult to consider prefabricated deposition covering product.
Owing to also having this reason, though use the high-frequency induction heating apparatus that possesses inductor so developed the heat effect body of using as local heating, the boiler plate of heating target is moved and be heated to the heating means (referring to Patent Document 3) of temperature required water-cooled sheet metal sections along lengthwise direction, but still do not have device, the method that it is fit to respect to the alloy bag melting treatment height extremely of boiler plate.And, be the center that is deformed into to cause except skewness because of heat in the past, do not consider that the alloy covering because of boiler plate has only one side to cause the distortion of bimetal described later.
Patent documentation 1: the spy opens flat 10-170194 communique
Patent documentation 2: the spy opens the 2001-4101 communique
Patent documentation 3: the spy opens the 2000-329304 communique
Patent documentation 4: the spy opens clear 55-144332 communique
Patent documentation 5: the spy opens clear 56-45220 communique
Summary of the invention
Unexposed patent application in advance: patent application 2004-88063 number
But; just recently (with reference to unexposed patent application in advance); developed and gone up the deposition of implementing the good alloy material of anti-ablation corrodibility at all zones (being generally single face) of need protection portion and coat, even and be welded to connect the alloy covering boiler part that also can not produce thermal shock crack.In addition, carry out welding procedure method welding procedure, self-dissolving alloy covering boiler part in the mode that can not produce thermal shock crack, also become and to implement for the purposes such as connection of the boiler part of the deposition covering of on all zones, having arranged the self-dissolving alloy.And, with its together, on boiler plate, carrying out for the manufacture method of the alloy covering boiler plate of the deposition of melting treatment purpose heating and the boiler plate heating device that adapts with it with mobile type of heating, also expectation practicability more highly just.
If also residual have in the melting treatment of the boiler plate of having implemented single face alloy covering, use heating unit utilization heating means in the past in the past to handle as described above, then such weak point takes place in the distortion of the bimetal that causes because of the thermal expansion rate variance of mother metal and covering etc. again and again.As lifting its object lesson, the example that Fig. 6 is to use general induction heating device to carry out the heating of boiler plate 10 (a) is the outside drawing of covering face side, (b) is end view drawing.In this case, for boiler plate 10 is specifically developed inductor 25 as the heat effect body, the section form fit of its coil shape and boiler plate 10.And, boiler plate 10 laterally fallen and supported its two ends, on one side move inductor 25 along this boiler plate 10, on inductor 25, carry out the high frequency energising on one side, with alloy covering 14 induction heating to the deposition temperature.
For such boiler plate 10 of having implemented melting treatment, the result who measures deflection is (with reference to Fig. 7, long and short dash line among each figure is represented the displacement before the alloy spraying plating, the displacement after the alloy spraying plating is represented in two dot chain line, solid line is represented the displacement after the melting treatment), displacement at thickness direction X, be in the distribution along lengthwise direction Z (with reference to Fig. 7 (a)) of thickness direction displacement Δ X, be to the maximum about 30mm, displacement at horizontal cross direction Y, be in the distribution along lengthwise direction Z (with reference to Fig. 7 (b)) of horizontal cross direction displacement Δ Y, be to the maximum about 10mm, thickness direction displacement Δ X along in the distribution (with reference to Fig. 7 (c)) of the displacement Y of horizontal cross direction, be to the maximum about 5mm.In case big like this distortion is residual, then when boiler plate 10 being connected to each other by welding etc., must carry out seam operation especially forcibly as the sheet edge of weld, therefore, not only construct in the operation and take the time, the bigger internal stress of the major cause of also residual the distortion that becomes the back on the stove of finishing at the stove housing.
Therefore, its technical problem is, in order to provide a kind of straightness planeness good single face clad boiler plate, heating means during to the heating unit of boiler plate and alloying covering boiler plate etc. are studied, on one side the distortion of boiler plate even the distortion of bimetal are corrected, Yi Bian carry out melting treatment.
Boiler plate heating device of the present invention (the 1st invention), develop in order to solve such problem, it is to have the heat effect body that local heating is used, its moving method, and the locating device of the boiler plate of heat treated object, the limit is moved the boiler plate heating device that heat above-mentioned boiler plate in turn on the limit with above-mentioned heat effect body along the lengthwise direction of above-mentioned boiler plate, it is characterized in that, as above-mentioned locating device and as the shape calibration devices of above-mentioned boiler plate, possess above-mentioned boiler plate is set up in parallel along above-mentioned lengthwise direction tensile Tractor with along above-mentioned lengthwise direction, and all apparatus is forced in the position that regulation is carried out in the displacement of the above-mentioned boiler plate on 2 direction of principal axis that intersect with above-mentioned lengthwise direction respectively.
Boiler plate heating device of the present invention (the 2nd invention), it is the boiler plate heating device of being put down in writing as the 1st invention, be further to make above-mentioned position force apparatus, as above-mentioned boiler plate is carried out compulsory position, can be taken as the displacement that corresponding initial stage of initial stage displacement displacement with above-mentioned boiler plate allows the position, avoids with the retreating position of the interference of above-mentioned heat effect body and be used to eliminate above-mentioned initial stage displacement respectively and correct the such invention in position.
The manufacture method of alloy covering boiler plate of the present invention (the 3rd invention), research and develop in order to solve above-mentioned problem, it is spraying plating alloy etc. and form alloy and pile up covering on the one side of boiler plate, then with this boiler plate so that the heat effect body that local heating is used heat along the form that its lengthwise direction moves, thereby make above-mentioned accumulation covering heating and melting form the manufacture method of the alloy covering boiler plate of deposition covering, it is characterized in that, in its heat-processed, with Tractor above-mentioned boiler plate is stretched along above-mentioned lengthwise direction on one side, force on one side apparatus to come the displacement of regulation on 2 direction of principal axis that intersect with above-mentioned lengthwise direction with the position, be out of shape thereby correct at a plurality of positions.
The manufacture method of alloy covering boiler plate of the present invention (the 4th invention), it is the invention on the manufacture method basis of the alloy covering boiler plate in the 3rd invention, put down in writing, it is characterized in that, implement the manufacture method alloying covering boiler plate of the 3rd the described alloy covering boiler plate of invention, then, to this alloy covering boiler plate, by load bending moment one edge above-mentioned lengthwise side release thereon on one side, simultaneously with the short interval operation of heating in turn of the lengthwise direction of this boiler plate, its hot spots is implemented bending machining in the mode that forms paddy portion in above-mentioned alloy covering side, thereby curved part is set.
In the manufacture method (the 3rd invention) of such boiler plate heating device of the present invention (the 1st invention) and alloy covering boiler plate, and when heating in order to carry out coming deposition to utilize spraying plating etc. to be formed on the melting treatment operation etc. of the alloy covering on the one side of boiler plate with mobile type of heating, when the boiler plate location is placed, in order to correct the distortion of this sheet material forcibly, on the lengthwise direction of sheet material of travel direction that equally also is the heat effect body, boiler plate is stretched, simultaneously to this boiler plate the regulation of a plurality of positions its to the 2 axial displacements that intersect with lengthwise direction, can in heating, also follow this heating and the shape finishing of remollescent boiler plate thus.And can not scratch the alloy covering this moment.
So, can provide a kind of straightness planeness good boiler plate according to the present invention.
In addition, in boiler plate heating device of the present invention (the 2nd invention), apparatus is forced in each position, as boiler plate is carried out compulsory position, can adopt corresponding initial stage of the initial stage displacement displacement with above-mentioned boiler plate to allow the position, avoid retreating position with the interference of above-mentioned heat effect body, and displacement rectification at least 3 the such positions of position that are used to eliminate above-mentioned initial stage displacement, thus, can be when keeping boiler plate, sheet material displacement in the early stage that will be harder before heating allows the position reasonably to keep, when heat effect body in heat-processed is close, avoid undesirable interference with retreating position, and then correcting the position to eliminate the displacement that after cooling, will occur by remollescent sheet material being forced at displacement after the heating, simultaneously by hardening by cooling with its fixed in shape.
By adopting 3 positions, make the displacement regulation of boiler plate like this, can be with standardized means, and then be with as required and the method for sequencing is correctly carried out.
In addition, boiler plate heating device of the present invention, particularly useful to heating for the deposition purpose of the alloy covering of boiler plate, but be not limited to this purposes, to heating, even either way be useful for what the alloy-free covering was arranged for the shape correction of boiler plate, various thermal treatment (quenching, tempering, the thermal treatment of whole grain etc.) purpose.
Moreover, in the manufacture method (the 4th invention) of alloy covering boiler plate of the present invention, after for the heating process of alloy covering deposition purpose, also carry out under the situation of bending operation, in this bending operation, though be boiler plate to be released heating on one side to lengthwise direction on one side, this hot spots is carried out bending in the mode that forms paddy portion in alloy covering one side, but, even follow the also bending stably of bending operation of release owing to improved the straightness of boiler plate in the alloy covering deposition heating process (melting treatment operation) before bending operation.In addition, because be flexural deformation under thermoplastic state, so just there is not the so undesirable situation of alloy covering fracture to take place.
Description of drawings
Fig. 1 relates to an embodiment of the invention, the structure of expression boiler plate heating device, (a) be the schematic appearance of the covering face side after boiler plate is placed in the boiler plate heating device, (b) be the schematic appearance of horizontal side, (c)～(e) be the symbolic diagram that cylinder body (cylinder or hydro-cylinder) is forced in the position used of shape finishing, (f) be the enlarged view in bight of the covering face of boiler plate, (g) be a part of enlarged view of sheet material end face.
Fig. 2 relates to the boiler plate of having used this boiler plate heating device and moves heating means, (a) is the schematic appearance of covering face side, (b) is the schematic appearance of horizontal side.
Fig. 3 represents the deformation state of the boiler plate after the deposition that utilizes boiler plate heating device and method to carry out the alloy covering is handled, (a)～(c) all for constituting by synoptic diagram and chart, (a) be the lengthwise direction distribution of thickness direction displacement, (b) being the lengthwise direction distribution of horizontal cross direction displacement, (c) is that the horizontal cross direction of thickness direction displacement distributes.
Fig. 4 relates to other embodiments of the present invention, is illustrated in the boiler plate bending operation after the boiler plate heating process, (a) is the orthographic plan of device etc., (b) is side elevational view, (c) is the stereographic map of the boiler plate after the processing.
Fig. 5 represents the structure of boiler plate, (a) is the outside drawing of non-covering face, (b) is the outside drawing of covering face, (c) be the outside drawing of the two end portions of covering face, (d) being end view drawing, (e) is the enlarged view of the angle part of covering face, (f) is the enlarged view of the part of end face.
Fig. 6 relates to the boiler plate that the inductor that makes general induction heating device and boiler plate adapt and moves heating means, (a) is the outside drawing of covering face side, (b) is end view drawing.
Fig. 7 represents the deformation state of the boiler plate after the deposition that utilizes such device and method to carry out the alloy covering is handled, (a)～(c) all for constituting by synoptic diagram and chart, (a) be the lengthwise direction distribution of thickness direction displacement, (b) being the lengthwise direction distribution of horizontal cross direction displacement, (c) is that the horizontal cross direction of thickness direction displacement distributes.
Label declaration
10 boiler plates, 11 steel sheet materials
12 pipe portions, 13 boards
14 alloy coverings, 15 communicating poress
The heating unit of 20 boiler plates
Force with cylinder body (position pressure apparatus) 21 positions
22 traction cylinder bodies (Tractor)
23 tractions are with cooperating utensil (Tractor)
24 fixing parts (Tractor)
25 inductors (heat effect body)
30 boiler plate bending apparatuss
Piece 32 pedestal fairloads are drawn in 31 extruding
33 ruhmkorff coils, 34 pivot arms
Embodiment
For an embodiment of boiler plate heating device of the present invention, quoted figures describes its formation.
Fig. 1 (a) is the schematic appearance (orthographic plan) of the covering face side after being placed on boiler plate 10 in the boiler plate heating device 20, (b) be the schematic appearance (side elevational view) of horizontal side, (c)～(e) be the symbolic diagram that cylinder body 21 is forced in the position used of shape finishing, (f) be the enlarged view of angle part of the covering face of boiler plate 10, (g) be a part of enlarged view of sheet material 10 end faces.
This boiler plate heating device 20 (with reference to Fig. 1 (a) and (b)), be the high-frequency induction heating apparatus of mobile type of heating to be expanded form, as well-known essential part, have the heat effect body of using as local heating inductor 25, will supply with the running gear that the power subsystem that the figure of the high frequency that leads to it does not show and the figure that inductor 25 is moved to lengthwise direction Z along boiler plate 10 are not shown via cable.Inductor 25 is made of water-cooled coil of steel pipe system etc., and the section form of its coil shape and boiler plate 10 adapts, thereby its trip is embedded on the boiler plate 10 and moves.
The locating device of the boiler plate 10 of heat treated object is expanded the shape calibration devices of correcting the distortion of boiler plate 10 into also double as, and apparatus 21,21 is forced in the Tractor 22～24 and the position that all have new importing ....
Apparatus 21,21 is forced in the position ..., be to be arranged side by side a plurality of positions to force to use cylinder body 21.In the illustrated embodiment (with reference to Fig. 1 (a), (b)), force with cylinder bodies 21 five positions, arranges equally spacedly along the lengthwise direction Z of boiler plate 10 to constitute a row, and it is set up three rows, amounts to 15 positions and force with cylinder bodies 21 thereby be assembled with.Force with cylinder body 21 (with reference to Fig. 1 (a)) first row's position, make activation part such as the body of rod towards with the orthogonal directions of lengthwise direction Z in horizontal cross direction Y be provided with, thereby the displacement of the boiler plate 10 on its direction of regulation Y.Force with cylinder body 21 (with reference to Fig. 1 (b)) second row and the 3rd row's position, make activation parts such as the body of rod towards with the orthogonal directions of lengthwise direction Z in thickness direction X be provided with, thereby the displacement of the boiler plate 10 on its direction of regulation X, but second row and the 3rd row, the displacement of both sides' ground regulation thickness direction X by boiler plate 10 is clamped round about from both sides.
Force with cylinder body 21 position, is made of hydro-cylinder etc. respectively, and the activation part of the front end of its body of rod etc. can adopt three following positions at least.Promptly, as the position of forcing its displacement with respect to boiler plate 10, can be according to the position location of individually setting respectively, and corresponding initial stage of the initial stage displacement displacement of choosing with boiler plate 10 allows position X1, Y1 (with reference to Fig. 1 (c)), avoid retreating position X2, the Y2 (with reference to Fig. 1 (d)) of the interference of the inductor 25 (heat effect body) and the body of rod etc., and displacement rectification position X3, the Y3 (with reference to Fig. 1 (e)) that eliminates the initial stage displacement of boiler plate 10.
Retreating position X2, Y2 are the positions that the body of rod fully retreats, and the initial stage displacement to allow position X1, Y1 and displacement to correct position X3, Y3 be the position that the body of rod has advanced.Displacement is corrected position X3, Y3 because corresponding to distortionless ideal boiler plate 10, thereby is directly determined by the design outside dimension of boiler plate 10 etc.Relative therewith, the initial stage displacement allows position X1, Y1, because can adapt with various deformation states, thus must be to each boiler plate 10 after in fact spraying plating finishes, decision is revised in on-the-spot contrast.Though still the location is different on the body of rod progressive position because initial stage displacement permission position X1, Y1 and displacement rectification position X3, Y3 are in like this, so for example, each position forces that each all sets up two stoppers can adjusting body of rod closed position independently with cylinder body 21, stopper is switched in selection according to the displacement forced location, specializes by such method.
Boiler plate 10 (with reference to Fig. 1 (f), (g)), though be not the part of boiler plate heating device 20 but heat treated target object, while but position in order to be easier to and to apply tension force with Tractor 22～24 reliably, be in order to draw with the cooperation that cooperates utensil 23 and to break away from and to carry out simply specifically, in the end, for example be formed with in the perforation of the two ends of board 13 and be used for inserting the communicating pores 15 of logical traction with the fitting pin that cooperates utensil 23.When after this constructing the housing of boiler stove boiler plate 10 being welded to each other connection, when communicating pores 15 usefulness liner plates or bolt etc. are clogged, boiler plate 10 can directly use, but communicating pores 15 becomes under the situation of obstacle when the constructing of boiler stove housing, adopts the boiler plate 10 with excess length in order to prepare to cut away afterwards.
The alloy covering 14 of boiler plate 10, can form by spraying plating self-dissolving alloy samely, also can be at end spraying plating superalloy material (JISG4901 simultaneously as the invention of undocumented patent application 1 in advance, 4902), spraying plating nickel self-dissolving alloy material (JISH8303) on the lingering section of one side, can also be on the whole zone of one side all spraying plating form; If spraying plating forms on the major part of one side, then also can simultaneously a part and another side similarly expose steel sheet material 11.For boiler plate 10, other the point with already the description identical also passable.
Manufacture method for the alloy covering boiler plate of the boiler plate heating device 20 that has used this embodiment describes with reference to accompanying drawing.Fig. 1 (a) and (b) are the schematic appearance after expression is placed on boiler plate 10 in the boiler plate heating device 20, (a) are orthographic plan, (b) are side elevational views.In addition, Fig. 2 represents to utilize boiler plate heating device 20 boiler plate 10 to be moved state in the process of heating.(a) be orthographic plan (outside drawing of covering face side), (b) be side elevational view (outside drawing of horizontal side).Moreover, Fig. 3 is the synoptic diagram and the chart of the deformation state of the boiler plate 10 after the deposition that utilizes the manufacture method of this alloy covering boiler plate to carry out alloy covering 14 is handled, (a) be the lengthwise direction Z distribution of thickness direction displacement Δ X, (b) being the lengthwise direction Z distribution of horizontal cross direction displacement Δ Y, (c) is that the horizontal cross direction Y of thickness direction displacement Δ X distributes.
In this case, melting treatment as the alloy covering 14 of boiler plate 10, be inductor 25 to be moved on one side along the lengthwise direction Z of boiler plate 10, alloy covering 14 with boiler plate 10 is heated to the deposition temperature on one side, this and general mobile type of heating are same, but for a change, because use is above-mentioned boiler plate heating device 20, so correct the distortion of boiler plate heating device 20 as described below.
I.e. (with reference to 1 (a) and (b)), when being placed on boiler plate 10 on the boiler plate heating device 20, the two ends of boiler plate 10 are attached on the Tractor 22～24, thereby give boiler plate 10 with tension force.This tension force is converted into mean stress, is 40N/mm during placement
2About, but after, add that to pine for be 30～40N/mm
2About, during cooling after heating finishes at 40N/mm
2Ground, front and back variable adjustment.
In addition, when the placement of boiler plate 10, each position forces to allow position X1, Y1 to support boiler plate 10 with cylinder body 21 displacement in the early stage.Because the initial stage displacement allows position X1, Y1 corresponding with the initial stage displacement of boiler plate 10, so boiler plate 10 is supported under the state that its distortion is allowed to, so even boiler plate 10 have initial deformation also reluctantly its it is supported.
Moreover (with reference to Fig. 2), in the moving process of inductor 25, when inductor 25 close coming, force with cylinder body 21 position there, and its bodies of rod etc. just temporarily retreat into retreating position X2, Y2.And when allowing inductor 25, the body of rod etc. just advance to displacement and correct position X3, Y3.Thus, this position of boiler plate 10, just be placed in the ideal position of having eliminated the initial stage displacement, accompany therewith, on boiler plate 10, produce the reverse cooling after strain of counteracting initial stage displacement, and produce corresponding with it provisional stress in inside, but just exist remollescent part in its vicinity by the ratio-frequency heating of inductor 25, so above-mentioned stress is just relaxed soon, boiler plate 10 is eliminated initial stage displacement ground distortion with the form of the stress that do not have residual harmful.
Like this, in the mobile heating that finishes to utilize inductor 25, even air cooling is when also finishing, and in boiler plate 10, alloy covering 14 tightly welds on steel sheet material 11 by melting treatment, knitted simultaneously thickly upgrading, and, cause the mode of crackle equivalent damage can not give such a alloy covering 14, suitably implemented the displacement correction process, promptly even the distortion of when carrying out melting treatment, also having corrected bimetal, thus become the good boiler plate of straightness planeness.
By the way, implemented the boiler plate 10 of melting treatment to utilizing device of the present invention and method, the result who measures deflection is (with reference to Fig. 3, long and short dash line is represented the displacement that the alloy spraying plating is preceding in each chart, the displacement after the alloy spraying plating is represented in two dot chain line, solid line is represented the displacement after the melting treatment), in the distribution along lengthwise direction Z (with reference to Fig. 3 (a)) of thickness direction displacement Δ X, be to the maximum about 5mm, in the distribution along lengthwise direction Z (with reference to Fig. 3 (b)) of horizontal cross direction displacement Δ Y, be to the maximum about 2mm, thickness direction displacement Δ X along in the distribution (with reference to Fig. 3 (c)) of the displacement Y of horizontal cross direction, be to the maximum about 2mm.
If this degree of distortion ground diminishes, then when boiler plate 10 being interconnected by welding etc., joint operation as the sheet edge of weld, because just can finish with the contraposition opposite joint that does not need to apply bending force, so can be easily and carry out stove rapidly and construct operation, in addition, residual stress also is little by little in the boiler stove housing of producing.
Other embodiments for the manufacture method of alloy covering boiler plate of the present invention describe with reference to accompanying drawing.Fig. 4 is illustrated in the state that finishes to append as required after the above-mentioned boiler plate heating process boiler plate bending operation of enforcement, (a) is the orthographic plan of device etc., (b) is side elevational view, (c) is the stereographic map of the boiler plate 10 after the bending machining.
This bending operation, be in order to form the boiler plate 10 of use, and the boiler plate 10 that utilizes the manufacture method of the alloy covering boiler plate that has used above-mentioned boiler plate heating device 20 to carry out after the melting treatment of alloy covering 14 is well-adapted in the sidewall sections of boiler stove and the junction of header field etc.
Boiler plate bending apparatus 30 that in this bending operation, adopts (with reference to Fig. 4 (a) and (b)) and patent documentation 4,5) possess and have: the release slide block 31 that boiler plate 10 is forwards released from the rear; Boiler plate 10 clipped from both sides and stipulate that it releases a pair of pedestal fairload 32 in orientation; Near the ruhmkorff coil 33 that the ratio-frequency heating of setting is used pedestal fairload 32; And the device of the front end of cramping boiler plate 10 or middle part and the bending moment applying mechanism of being furnished with pivot arm 34.
And, when being placed on boiler plate 10 on the boiler plate bending apparatus 30, the formation of alloy covering 14 is sidelong towards the cycle center one of pivot arm 34 puts, when under this state, switch on to ruhmkorff coil 33 high frequencies on one side, boiler plate 10 usefulness being released slide block 31 on one side releases to lengthwise direction, thereby utilize its thrust to make pivot arm 34 rotation be pushed out part among the boiler plate 10 when crooked simultaneously, ruhmkorff coil 33 places among boiler plate 10, the part of sensed heating will be to alloy covering 14 1 lateral bending songs, and alloy covering 14 is to interior all sides (with reference to Fig. 4 (c)) in boiler plate 10 bendings.
The heating of this bending operation is carried out lenitively than the heating in melting treatment operation before this.That is to say, above-mentioned melting treatment operation interalloy covering 14 is heated to deposition temperature (for example about 1050 ℃), but in this bending operation, for avoiding the reheat crackle of alloy covering 14, the intensification of alloy covering 14 is controlled as the softening temperature lower than deposition temperature (the sheet material viscous deformation is easy to temperature, for example about 950).Set by such temperature,, also do not have and peel off even, do not have be full of cracks with boiler plate 10 bendings.And, because the straightness of boiler plate 10 has improved in melting treatment operation before this, so even be accompanied by the processing of release in bending operation, boiler plate 10 also can stably be pushed out, case of bending is also stable, therefore curves perfectly circular-arc.
In addition, in the above-mentioned embodiment, force with cylinder body 30 as the position that the position forces apparatus to enumerate fluid pressure type, but the position forces apparatus to be not limited thereto certainly, other electrodynamictype, mechanical type also can, it is also passable for example the mechanical type screw block to be driven such formation with electrical motor driven and mechanism for converting rotary motion into linear motion.Simple example is such as also can being to make it to advance and retreat with hand bolt.For Tractor, too, not only be defined in traction cylinder body 20.
In addition, in the above-mentioned embodiment, as the heat effect body, enumerated the inductor 25 of high-frequency induction heating apparatus, but the heat effect body obviously is not limited to this, as long as can on the lengthwise direction Z of boiler plate 10, move heating, even other also can, it is also passable for example to rely on gas to add pipeline fuel nozzle (ラ イ Application バ Na one) that thermal-flame realizes etc.
And then, in the above-described embodiment, with Fig. 1 (a) as orthographic plan, to scheme under (b) state as side elevational view, promptly under covering being faced up, boiler plate 10 is placed on the boiler plate heating device 20, but modes of emplacement is not limited thereto the ventricumbent state of non-covering.For example, boiler plate heating device 20 also can be at the covering face of boiler plate 10 and non-covering face all under horizontal state, promptly Fig. 1 (a) as orthographic plan, under the state of this figure (b), boiler plate 10 is positioned for heating purposes as side elevational view.
Claims (4)
1. boiler plate heating device, it is to have the heat effect body that local heating is used, its running gear, and the locating device of the boiler plate of heat treated object, the limit is moved the boiler plate device that heat in turn to above-mentioned boiler plate on the limit with above-mentioned heat effect body along the lengthwise direction of above-mentioned boiler plate, it is characterized in that, as above-mentioned locating device and as the shape calibration devices of above-mentioned boiler plate, possess above-mentioned boiler plate is set up in parallel along above-mentioned lengthwise direction tensile Tractor with along above-mentioned lengthwise direction, and regulation is respectively forced apparatus to the position of the displacement of the 2 axial above-mentioned boiler plates that intersect with above-mentioned lengthwise direction.
2. boiler plate heating device as claimed in claim 1, it is characterized in that: apparatus is forced in above-mentioned position, as above-mentioned boiler plate is carried out compulsory position, can be taken as the displacement that corresponding initial stage of initial stage displacement displacement with above-mentioned boiler plate allows the position, avoids with the retreating position of the interference of above-mentioned heat effect body and be used to eliminate above-mentioned initial stage displacement respectively and correct the position.
3. the manufacture method of an alloy covering boiler plate, it is a spraying plating alloy etc. and form alloy and pile up covering on the one side of boiler plate, then with this boiler plate so that the heat effect body that local heating is used heat along the form that its lengthwise direction moves, thereby make above-mentioned accumulation covering heating and melting form the manufacture method of the alloy covering boiler plate of deposition covering, it is characterized in that, in its heat-processed, with Tractor above-mentioned boiler plate is stretched along above-mentioned lengthwise direction on one side, on one side force apparatus to come regulation with the position, be out of shape thereby correct to the 2 axial displacements that intersect with above-mentioned lengthwise direction at a plurality of positions.
4. the manufacture method of an alloy covering boiler plate, it is characterized in that: the manufacture method alloying covering boiler plate of implementing the described alloy covering of claim 3 boiler plate, then, to this alloy covering boiler plate, by load bending moment one edge above-mentioned lengthwise side release thereon on one side, simultaneously with the short interval operation of heating in turn of the lengthwise direction of this boiler plate, its hot spots is implemented bending machining in the mode that forms paddy portion in above-mentioned alloy covering side, thereby curved part is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004159039A JP4297354B2 (en) | 2004-05-28 | 2004-05-28 | Boiler panel heating apparatus and method |
| JP159039/2004 | 2004-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1715449A true CN1715449A (en) | 2006-01-04 |
| CN1715449B CN1715449B (en) | 2010-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510073074 Active CN1715449B (en) | 2004-05-28 | 2005-05-27 | Boiler plate heating device and method |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4297354B2 (en) |
| CN (1) | CN1715449B (en) |
| HK (1) | HK1083524A1 (en) |
| TW (1) | TW200600718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970181B (en) * | 2007-01-19 | 2011-05-18 | 宝钛集团有限公司 | Metal sheet hot-rectification processing method |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5074707B2 (en) * | 2006-05-26 | 2012-11-14 | 光洋サーモシステム株式会社 | Heating device |
| JP2008116150A (en) | 2006-11-06 | 2008-05-22 | Dai Ichi High Frequency Co Ltd | Panel for boiler waterwall |
| JP5875063B2 (en) * | 2011-11-25 | 2016-03-02 | 第一高周波工業株式会社 | Method for manufacturing protector for metal tube material |
| US10731849B2 (en) | 2016-06-03 | 2020-08-04 | General Electric Technology Gmbh | Apparatus and method for welding a waterwall panel |
| CN116689556B (en) * | 2023-08-08 | 2023-10-10 | 山东德鼓风机有限公司 | Fan backplate processing equipment of bending |
-
2004
- 2004-05-28 JP JP2004159039A patent/JP4297354B2/en active Active
-
2005
- 2005-05-24 TW TW094116819A patent/TW200600718A/en unknown
- 2005-05-27 CN CN 200510073074 patent/CN1715449B/en active Active
-
2006
- 2006-03-20 HK HK06103489.6A patent/HK1083524A1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1970181B (en) * | 2007-01-19 | 2011-05-18 | 宝钛集团有限公司 | Metal sheet hot-rectification processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005337623A (en) | 2005-12-08 |
| TWI337650B (en) | 2011-02-21 |
| CN1715449B (en) | 2010-12-15 |
| JP4297354B2 (en) | 2009-07-15 |
| HK1083524A1 (en) | 2006-07-07 |
| TW200600718A (en) | 2006-01-01 |
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