CN205613943U - Intermediate frequency return bend angle school shape mould - Google Patents
Intermediate frequency return bend angle school shape mould Download PDFInfo
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- CN205613943U CN205613943U CN201620430447.7U CN201620430447U CN205613943U CN 205613943 U CN205613943 U CN 205613943U CN 201620430447 U CN201620430447 U CN 201620430447U CN 205613943 U CN205613943 U CN 205613943U
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Abstract
The utility model relates to an intermediate frequency return bend angle school shape mould, its characteristics are: the concrete tubular pile forming die comprises an upper die and a lower die, going up the mould and adopting to connect and dull and stereotypedly links firmly with the bent plate, the bent plate is combination welded structure, and the main gusset in neutral layer of bent plate is equallyd divide with other gussets and is do not linked firmly with the bottom surface of being connected the flat board, the structure of lower mould is: it includes base, two rotators, and two on -edge boards of above -mentioned opposition of bottom plate constitute the base of flute profile, and it is the semicircular groove that the both ends symmetry of on -edge board sets up the end, the rotator sets up the ascending semi -circular cell body of opening and links firmly back shaft as an organic whole, and the both sides of semi -circular cell body are arranged respectively in to the back shaft, and the axis of back shaft is perpendicular with semi -circular cell body axis, and the cylinder summit of back shaft and the tank bottom of semi -circular cell body are tangent, and in the base is arranged respectively in to two rotators, and be located the notch department that the base both ends set up, the back shaft of rotator is located inslot, back shaft and the groove sliding contact of the setting of base both ends.
Description
Technical field
The utility model belongs to medium frequency bending of pipe and manufactures instrument, is medium frequency bending of pipe angle school shape mould.
Background technology
Present stage, in the gradational fired power generating unit of the institute such as 300MW, 600MW, and the 1000MW that China starts, in the middle of its main steam line, typically all contain 90 ° of bend pipes.And 90 ° of bend pipes are common and most important pipe fittings in the main steam line of thermal power plant, pipe material mostly is: A335P91.And wall thickness is typically thicker.It is the difficult point in whole engineering project all pipe fittings processing and making process.
At present, it is to bend on medium-frequency pipe bender under such product usual condition.Also cannot buy the standardized equipment that device fabrication enterprise is produced by present stage, the medium-frequency pipe bender that each manufacturer is used is all the homemade non-standard equipment of this enterprise mostly, affected by equipment self manufacture level, use its angular error of bend pipe that homemade nonstandard medium-frequency pipe bender is bent at 90 ° ± 2 °.But owing to the bending radius of medium frequency bending of pipe that has is up to 4 times more than of himself diameter, in addition medium frequency bending of pipe self with straight section all longer, up to 2 meters having, so, only this error of about 2 °, the cumulative errors that can cause whole medium frequency bending of pipe chord length are mutually far short of what is expected, the serious dislocation on this interface direction, can cause huge trouble to in-site installation, have even cannot install.Therefore, being precisely controlled of the bending radius of medium frequency bending of pipe, particularly angle has just become the key link needing strictly to control in medium frequency bending of pipe manufacturing process.Other producers of domestic pharmaceutical industry industry, produce the bend pipe of gross error to bend pipe angle, and its processing method is to use to be reinstalled medium-frequency pipe bender and continue again to bend on the basis of original mostly.There are the following problems to use this kind of method meeting: first, again carrying out bending to use Frequency Induction Heating circle to heat it, the particularly P91 to heavy wall, P92 pipeline, its heating-up temperature is usually quite height, thus for its metallographic, in terms of its heterogeneous microstructure, have very big change；Second, owing to straight tube has been bent into the circular of wide-angle, itself not there is symmetry, precisely lifting is highly difficult, returns the bad centering of installation, and installation difficulty is bigger；3rd, the reason that due to this process self, the segmental arc that rises at the place of continuing for the medium frequency bending of pipe there will be fold；Therefore make in this way, the appearance and size of whole medium frequency bending of pipe it is difficult to ensure that.From the point of view of its entirely complicated and high-leveled and difficult manufacture process, considerably increase the production cost of product undoubtedly.This objective with Reducing Cost in Enterprises, improves market competition advantage phase and deviates from.Therefore, up to the present, a kind of solution substituting this technique how is developed, it has also become the focus that in the sector, numerous enterprises is attracted attention.
Content of the invention
Technical problem to be solved in the utility model is: overcome existing shortcoming, there is provided the big span of a kind of middle low temperature pure compressing medium frequency bending of pipe angle school shape mould, both successfully avoid continuation when carrying out secondary and bending in terms of interior microscopic institutional framework for the pipe fitting to change, turn avoid the place of continuing plays the phenomenon that segmental arc there will be fold, thus having reached the purpose of accurate school shape, operating result is accurately perfect.Moreover, this kind of way is also simple to operate, and time is short.Decrease the operation of some complexity in medium frequency bending of pipe process so that got back in the cost of manufacture of pipe fitting and significantly reduced.Objectively, not only increase the efficiency of enterprise, too increase the competitive advantage of enterprise, open prospect for following development of enterprise.
The scheme that the utility model solves technical problem is: a kind of medium frequency bending of pipe angle school shape mould, it is characterized in that: it includes upper mold, lower mold, described upper mold uses connection flat board and bent plate to be connected, bent plate is Combination Welding structure, concrete structure is: in the range of 90 ° of angles, after the spill annulus main body of upper mold is with segmentation compacting, recombinant is welded into the quadrant ring body that radius is r, the two ends of spill annulus main body are welded with the straight part of semicylinder structure respectively, the neutral line main gusset of upper mold is the double plate structure strengthened, other gussets are then distributed symmetrically and evenly, thus constitute bent plate, the neutral line main gusset of bent plate and other gussets are connected with the bottom surface being connected flat board respectively；The structure of described lower mold is: it includes base, two rotary bodies, described base comprises base plate and two cant boards, above opposed two cant boards of base plate, constitute the base of flute profile, the two ends of cant board are symmetrical arranged the end for semicircle, opening upwards and coaxial groove, the axis of groove is vertical with cant board, described rotary body arranges the semicircle cell body of opening upwards and the support shaft being fixed with one, support shaft is respectively placed in the both sides of semicircle cell body, the axis of support shaft is vertical with semi-circular groove body axis, the cylinder summit of support shaft is tangent with the bottom land of semicircle cell body, two rotary bodies are respectively placed in base, and it is positioned at the notch that base two ends are arranged, the support shaft of rotary body is positioned at the groove that base two ends are arranged, support shaft and groove sliding contact.
The spill annulus main body of described upper mold with after segmentation compacting, the torus that is welded into of recombinant, the arc radius R of its radius r and medium frequency bending of pipe has a following relation:
r=0.986R。
It is provided for the compacting peep hole observed in the middle of the cant board of described lower mold.
Between the groove at described lower mold cant board two ends and support shaft, halfliner is set.
The halfliner outward flange at described lower mold cant board two ends arranges position block.
The course of work of the present utility model is:
1 mould is fixed
First, the workbench that mould is placed on forcing press adjusts mutual alignment, and makes the two entirely on the center, is then fixed on mold on the slide block of forcing press again.It is positioned over pressed medium frequency bending of pipe in lower mold so that it is the central point of sweep just falls in the span central authorities of two rotary body axial lines；
Trial assembly before 2 heating
A puts down upper mold so that it is fall on the medium frequency bending of pipe being wanted school shape.Check that medium frequency bending of pipe surrounding up and down and must not interfere between upper/lower die and rotary body is rotatable；
Before b trial assembly, line detection before the medium frequency bending of pipe being wanted school shape once being pressed on face plate, inspection measurement point is accomplished fluently sample dotting punch and carried out mark simultaneously, in case lower one school shape operation measures and be used with comparison；
The lubrication of the upper and lower mould of c, is lubricated to the torus surface of mold and the torus surface of lower mold rotary body respectively by flakey lead powder, to guarantee that the medium frequency bending of pipe suppressing when institute's school shape has good mobility relative to mould；
The preparation of 3 suspenders
Weight according to hung medium frequency bending of pipe prepares corresponding hoisting gripping member, and this fixture must possess the high temperature that can bear 1100 DEG C；
4 medium frequency bending of pipe heating
It after trial assembly completes, is slowly heated bend pipe in medium frequency bending of pipe is positioned over special heating furnace to set point of temperature, comes out of the stove after held for some time, immediately the press-bending position heat-preservation cotton in the middle part of medium frequency bending of pipe is wrapped after coming out of the stove；
The centering of 5 medium frequency bending of pipe pressure positions
Medium frequency bending of pipe after coming out of the stove steadily is sling by preprepared suspender, then it is slowly placed on the rotary body at lower mold two ends, carry out accurate school position subsequently to it by way of only lifting by crane medium frequency bending of pipe wherein one end, until the central point of medium frequency bending of pipe sweep just falls in the middle position of two rotary body axial line spans；
6 formally suppress
Start forcing press and enter compaction procedure, during compacting, need to conscientiously observe medium frequency bending of pipe areal deformation situation, quality inspection personnel is taked grasp with pressure in good time with the mode of inspection and control school shape degree simultaneously, guarantee that the actual angle of medium frequency bending of pipe falls within the deviation of standard gauge provisioning request angle ± 0.5 °, to reach the purpose of intimate accurate calibration；
The cooling of 7 medium frequency bending of pipe
After shape compacting in whole school completes, by heat-preservation cotton, whole medium frequency bending of pipe is wrapped, be allowed to overall Slow cooling, unaffected to guarantee its corresponding tissue characteristics；
8 quality inspections inspection eventually
The medium frequency bending of pipe being down to room temperature is checked again, the standard value of quality inspection testing result and drawing requirement is contrasted, requiring if meeting, illustrating that school shape is qualified；If not being inconsistent requirement, also needing to repeat above-mentioned respective process and carrying out school shape again, till meeting requirement.
On the utility model utilizes, lower mold bends medium frequency bending of pipe not in place to angle and carries out secondary accurate school type, successfully avoid continuation when carrying out secondary and bending in terms of interior microscopic institutional framework for the medium frequency bending of pipe to change, avoid the place of continuing plays the phenomenon that segmental arc there will be fold, thus having reached the purpose of accurate school shape, operating result is accurately perfect.Moreover, this kind of way is also simple to operate, and time is short.Decrease the operation of some complexity in medium frequency bending of pipe process so that got back in the cost of manufacture of medium frequency bending of pipe and significantly reduced.Objectively, not only increase the efficiency of enterprise, too increase the competitive advantage of enterprise, open prospect for following development of enterprise.
Brief description
Fig. 1 is the structural representation of the utility model medium frequency bending of pipe angle school shape mould；
Fig. 2 is the upper mold schematic front view of the utility model medium frequency bending of pipe angle school shape mould；
Fig. 3 is the left view schematic diagram of Fig. 2；
Fig. 4 is the base schematic front view of the utility model medium frequency bending of pipe angle school shape lower mould；
Fig. 5 is the left view schematic diagram of Fig. 4；
Fig. 6 is the rotary body schematic front view of the utility model medium frequency bending of pipe angle school shape lower mould；
Fig. 7 is the left view schematic diagram of Fig. 6.
In figure: 1 slide block, 2 upper molds, 3 neutral line main gussets, 4 gussets, 5 spill annulus main bodys, 6 medium frequency bending of pipe, 7 rotary bodies, 8 bases, 9 peep holes, 10 workbench, 11 straight sections, 12 grooves, 13 position blocks, 14 base plates, 15 cant boards, 16 semicircle cell bodies, 17 support shafts.
Detailed description of the invention
With embodiment, the utility model is further illustrated below in conjunction with the accompanying drawings.
See Fig. 1-Fig. 7, a kind of medium frequency bending of pipe angle school of the present embodiment shape mould, it includes upper die and lower die, described upper mold uses connection flat board 2 and bent plate to be connected, bent plate is Combination Welding structure, and concrete structure is: in the range of 90 ° of angles, the spill annulus main body 5 of upper mold with segmentation compacting after, recombinant be welded into the torus as r for the radius, there is between the arc radius R of arc radius r and medium frequency bending of pipe 6 relation of r=0.986R, the two ends of spill annulus main body 5 and semicirclePostThe straight section 11 of body structure welds, and the neutral line main gusset 3 of upper mold is the double plate structure strengthened, and other gussets 4 are then distributed symmetrically and evenly, thus constitute bent plate, and the neutral line main gusset 3 of bent plate and other gussets 4 are connected with the bottom surface being connected flat board 2 respectively；nullThe structure of described lower mold is: it includes base 8、Two rotary bodies 7，Described base 8 comprises base plate 14 and two cant boards 15，Above opposed two cant boards 15 of base plate 14，Constitute the base 8 of flute profile，It is provided for the compacting peep hole 9 observed in the middle of cant board 15，The two ends of cant board 15 are symmetrical arranged the end for semicircle、Opening upwards and coaxial groove 12，The axis of groove 12 is vertical with cant board 15、Outward flange arranges position block 13，Described rotary body 7 arranges the semicircle cell body 16 of opening upwards and the support shaft 17 being fixed with one，Support shaft 17 is respectively placed in the both sides of semicircle cell body 16，The axis of support shaft 17 is vertical with semicircle cell body 16 axis，The cylinder summit of support shaft 17 is tangent with the bottom land of semicircle cell body 16，Two rotary bodies 7 are respectively placed in base 8、And be positioned at the groove 12 mouthfuls that base 8 two ends are arranged，The support shaft 17 of rotary body 7 is positioned at the groove 12 that base 8 two ends are arranged、Support shaft 17 and groove 12 sliding contact，Between groove 12 and support shaft 17, halfliner is set.
The present embodiment uses prior art manufacture.
The course of work of the present embodiment is:
1 mould is fixed
First, the workbench 10 that mould is placed on forcing press adjusts mutual alignment, and makes the two entirely on the center, is then fixed on mold on the slide block 1 of forcing press again.It is positioned over pressed medium frequency bending of pipe 6 in lower mold so that it is the central point of sweep just falls in the span central authorities of two rotary body 7 axial lines；
Trial assembly before 2 heating
A puts down upper mold so that it is fall on the medium frequency bending of pipe 6 being wanted school shape.Check that medium frequency bending of pipe 6 surrounding up and down and must not interfere between upper/lower die and rotary body 7 is rotatable；
Before b trial assembly, line detection before the medium frequency bending of pipe 6 being wanted school shape once being pressed on face plate, inspection measurement point is accomplished fluently sample dotting punch and carried out mark simultaneously, in case lower one school shape operation measures and be used with comparison；
The lubrication of the upper and lower mould of c, is lubricated to the torus surface of mold and the torus surface of lower mold rotary body 7 respectively by flakey lead powder, to guarantee that the medium frequency bending of pipe 6 suppressing when institute's school shape has good mobility relative to mould；
The preparation of 3 suspenders
Weight according to hung medium frequency bending of pipe 6 prepares corresponding hoisting gripping member, and this fixture must possess the high temperature that can bear 1100 DEG C；
4 medium frequency bending of pipe 6 heat
It after trial assembly completes, is slowly heated medium frequency bending of pipe 6 to set point of temperature in medium frequency bending of pipe 6 is positioned over special heating furnace, comes out of the stove after held for some time, immediately the press-bending position heat-preservation cotton in the middle part of medium frequency bending of pipe 6 is wrapped after coming out of the stove；
5 medium frequency bending of pipe 6 press the centering of position
Medium frequency bending of pipe 6 after coming out of the stove steadily is sling by preprepared suspender, then it is slowly placed on the rotary body 7 at lower mold two ends, carry out accurate school position subsequently to it by way of only lifting by crane medium frequency bending of pipe 6 wherein one end, until the central point of medium frequency bending of pipe 6 sweep just falls in the middle position of two rotary body 7 axial line spans；
6 formally suppress
Start forcing press and enter compaction procedure, during compacting, need to conscientiously observe medium frequency bending of pipe 6 areal deformation situation, quality inspection personnel is taked grasp with pressure in good time with the mode of inspection and control school shape degree simultaneously, guarantee that the actual angle of medium frequency bending of pipe 6 falls within the deviation of standard gauge provisioning request angle ± 0.5 °, to reach the purpose of intimate accurate calibration；
The cooling of 7 medium frequency bending of pipe 6
After shape compacting in whole school completes, by heat-preservation cotton, whole medium frequency bending of pipe 6 is wrapped, be allowed to overall Slow cooling, unaffected to guarantee its corresponding tissue characteristics；
8 quality inspections inspection eventually
The medium frequency bending of pipe 6 being down to room temperature is checked again, the standard value of quality inspection testing result and drawing requirement is contrasted, requiring if meeting, illustrating that school shape is qualified；If not being inconsistent requirement, also needing to repeat above-mentioned respective process and carrying out school shape again, till meeting requirement.
Claims (2)
1. a medium frequency bending of pipe angle school shape mould, it is characterized in that: it includes upper mold, lower mold, described upper mold uses connection flat board and bent plate to be connected, bent plate is Combination Welding structure, concrete structure is: in the range of 90 ° of angles, after the spill annulus main body of upper mold is with segmentation compacting, recombinant is welded into the quadrant ring body that radius is r, the two ends straight part of spill annulus main body then uses semicylinder structure, the neutral line main gusset of upper mold is the double plate structure strengthened, other gussets are then distributed symmetrically and evenly, thus constitute bent plate, the neutral line main gusset of bent plate and other gussets are connected with the bottom surface being connected flat board respectively；The structure of described lower mold is: it includes base, two rotary bodies, described base comprises base plate and two cant boards, above opposed two cant boards of base plate, constitute the base of flute profile, the two ends of cant board are symmetrical arranged the end for semicircle, opening upwards and coaxial groove, the axis of groove is vertical with cant board, described rotary body arranges the semicircle cell body of opening upwards and the support shaft being fixed with one, support shaft is respectively placed in the both sides of semicircle cell body, the axis of support shaft is vertical with semi-circular groove body axis, the cylinder summit of support shaft is tangent with the bottom land of semicircle cell body, two rotary bodies are respectively placed in base, and it is positioned at the notch that base two ends are arranged, the support shaft of rotary body is positioned at the groove that base two ends are arranged, support shaft and groove sliding contact.
2. medium frequency bending of pipe angle school as claimed in claim 1 shape mould, is characterized in that: the spill annulus main body of described upper mold with after segmentation compacting, the torus that is welded into of recombinant, the arc radius R of its radius r and medium frequency bending of pipe has a following relation:
r=0.986R。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620430447.7U CN205613943U (en) | 2016-05-13 | 2016-05-13 | Intermediate frequency return bend angle school shape mould |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620430447.7U CN205613943U (en) | 2016-05-13 | 2016-05-13 | Intermediate frequency return bend angle school shape mould |
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| CN205613943U true CN205613943U (en) | 2016-10-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052079A (en) * | 2017-05-09 | 2017-08-18 | 四川三洲川化机核能设备制造有限公司 | A kind of forming method of the short radius high temperature alloy elbow of heavy caliber thick wall |
| CN110586771A (en) * | 2019-10-30 | 2019-12-20 | 中国二十二冶集团有限公司 | Large-diameter pipeline pipe bending device and pipe bending method |
| CN110688793A (en) * | 2019-09-23 | 2020-01-14 | 成都飞机工业（集团）有限责任公司 | Secondary shape correction quality checking method during assembly of aviation elbow based on finite element |
-
2016
- 2016-05-13 CN CN201620430447.7U patent/CN205613943U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107052079A (en) * | 2017-05-09 | 2017-08-18 | 四川三洲川化机核能设备制造有限公司 | A kind of forming method of the short radius high temperature alloy elbow of heavy caliber thick wall |
| CN107052079B (en) * | 2017-05-09 | 2018-08-28 | 四川三洲川化机核能设备制造有限公司 | A kind of forming method of heavy caliber thick wall short radius high temperature alloy elbow |
| CN110688793A (en) * | 2019-09-23 | 2020-01-14 | 成都飞机工业（集团）有限责任公司 | Secondary shape correction quality checking method during assembly of aviation elbow based on finite element |
| CN110586771A (en) * | 2019-10-30 | 2019-12-20 | 中国二十二冶集团有限公司 | Large-diameter pipeline pipe bending device and pipe bending method |
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