CN1669691A - Method for processing rectangular tubes by extrusion molding - Google Patents
Method for processing rectangular tubes by extrusion molding Download PDFInfo
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- CN1669691A CN1669691A CN 200510063462 CN200510063462A CN1669691A CN 1669691 A CN1669691 A CN 1669691A CN 200510063462 CN200510063462 CN 200510063462 CN 200510063462 A CN200510063462 A CN 200510063462A CN 1669691 A CN1669691 A CN 1669691A
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Abstract
This invention discloses a rectangular tube-processing method, adapting to processing segregator by rectangular tubes in power plant heat-exchange system, also to making rectangular short tubes in other sections. The method adopts compression method by parts with quadric deformation and one-shot formation, and three sets of molds working on tubes, wherein, the first mold composed by internal mold and external mold for the first deformation from tube into drum shape, the second one composed by dynamic mold and stationary mold for the second deformation from drum shape into square, the third mold composed by internal and external molds for formation and shape machining. The invention has the advantages of high machining efficiency, saving raw material and easy guarantee of quality.
Description
Affiliated field: the present invention relates to field of machining, be particularly for a kind of method with the extrusion modling processing rectangular tubes.Be applicable to the processing and manufacturing that the various rectangles of segregator are taken in the power plant heat exchange cooling system, also can be used for the processing and manufacturing of various rectangle short pipe fittings in other industry.
Prior art: in each existing thermal power plant, on the segregator in the heat exchange cooling system, use the rectangle connecting tube of a large amount of all sizes, promptly rectangle is taken over.The processing and manufacturing that these rectangles are taken over, mostly existing be the method that adopts the Welder---the welding synthetic method realizes.Be raw material promptly with dull and stereotyped steel, earlier steel plate is become the square blank of two block lengths by the designing requirement shearing blanking of workpiece, with mould the rectangle steel plate is processed into the member of two ㄩ shapes then, again with the method for welding with two ㄩ shape members mouth to mouth butt welding constitute a rectangular pipe fittings together.This method of taking over the synthetic rectangle of welding seems simple, grasp well, but because rectangle is taken over the sum of errors deviation of exhibition body when blanking, shearing, the increase that can bring raw-material waste and waste product.And during two ㄩ shape member butt joint weldings, welding quality is difficult for guaranteeing, thereby whole process is become takes a lot of work, time-consuming, trouble, and working (machining) efficiency is low, and quality is difficult for guaranteeing, is difficult for promoting the use of in enormous quantities.
Summary of the invention: the objective of the invention is to disclose a kind of method-cold extrusion shaped method,, save material, satisfy user and market demand to improve crudy and the working (machining) efficiency that rectangle is taken over without the adapter of welding processing rectangle.
Task of the present invention is by special mould, realizes on the pipe of garden with the substep extrusion.
Technical scheme of the present invention is such realization: will become short garden shape pipe fitting as stock under the designing requirement of raw material steel pipe according to workpiece, with different moulds garden shape pipe fitting is implemented cold-pressing deformation then, become rectangular tube.Concrete the present invention adopts secondary deformation, and one-time formed substep extrinsion pressing is realized on the pipe of garden by special I, II, III, three groups of moulds.
Once distortion realizes that with I group mould after the distortion, workpiece becomes by two straight lines and two cydariforms that lonely line is formed by the garden is tubular.Mould I is made up of the internal mold of hexahedron and the external mold of band V-shaped groove.Add man-hour, external mold places on the work top of forcing press, and the garden tubular workpieces is placed on the notch of external mold, and internal mold is packed in the cavity of workpiece, from top to bottom pushes the rear and front end that internal mold is positioned at outer workpiece with forcing press; Transfer turnback to lay again up and down workpiece, the internal mold of packing into carries out same extruding once more, finishes the once distortion of workpiece.
Secondary deformation is finished with II group mould, and after the distortion, workpiece becomes roughly rectangular pipe fittings by the cydariform pipe fitting.Mould II is the internal mold of a cuboid, and being respectively has the fixed half and moving half of the cuboid of a slope to combine by two.During extruding, workpiece is vertical to be laid, and locates in the workpiece of earlier cover half vertically being packed into, then dynamic model from top to bottom is pressed in second half cavity of workpiece with forcing press, makes work be roughly rectangle by the cydariform extrusion molding.Why secondary deformation will adopt moving, the cover half by two band slopes to be combined into a cuboid internal mold, is to consider to add to pass in and out the convenient and reasonable of mould man-hour and be convenient to operation.
Molding procedure of the present invention is finished with mould III, and after the moulding, workpiece is fixed to the rectangular pipe fittings of a standard.Mould III is made up of the internal mold of cuboid and the external mold of rectangular flute profile.Add man-hour, external mold places on the press bench face, and workpiece is placed on the notch of external mold, and internal mold is packed in the workpiece cavity, from top to bottom pushes the two ends that internal mold is positioned at outer workpiece with forcing press; Transfer turnback to lay again up and down workpiece, the internal mold of packing into is done same extruding, and four angles of workpiece are finalized, and the rectangle that makes workpiece become codes and standards is taken over.The processing method that provides among the present invention can be used for length in 1 meter processing and manufacturing with interior various rectangles, square short pipe fitting.
The present invention is owing to adopted special interior outer mold that garden shape pipe fitting has been implemented the substep extrusion modling, and the welding synthetic method that the manufacturing that makes rectangle take over has been given up time-consuming has realized that the rectangle adapter is by the directly one processing and manufacturing of the side of change of garden.Have technology simple, save raw material, working (machining) efficiency advantages of higher.
Accompanying drawing. embodiment:
Specific embodiments of the invention are provided by following accompanying drawing:
The processing schematic diagram that Fig. 1 once is out of shape for the present invention,
Fig. 2 is the schematic diagram that the present invention once is out of shape the back workpiece,
Fig. 3 is the processing schematic diagram of secondary deformation of the present invention,
Fig. 4 is the workpiece schematic diagram behind the secondary deformation of the present invention,
Fig. 5 is the processing schematic diagram of molding procedure of the present invention,
Fig. 6 is the workpiece schematic diagram after the moulding of the present invention,
Below in conjunction with accompanying drawing the present invention is described further:
(1) is external mold among the figure, and (2) are internal mold, and (3) are workpiece blank, and (4) are the workpiece after the once distortion, and (5) are dynamic model, and (6) are cover half, and (7) are the workpiece behind the secondary deformation, and (8) are external mold, and (9) are internal mold, and (10) are the workpiece after the moulding.
As figure, the processing method that the present invention provides is to have adopted secondary deformation, one-time formed substep extrinsion pressing, realizes on the tubular blank in garden by special I, II, three groups of moulds of III.Wherein, I group mould is made up of the external mold (1) of hexahedral internal mold (2) and band V-shaped groove; II group mould is a cuboid internal mold, is to be combined by two cover half (6) and dynamic models (5) that respectively have the cuboid of a slope.III group mould is made up of the internal mold (9) of cuboid and the external mold (8) of rectangular flute profile.Add man-hour, first internal mold (2) and external mold (1) with the I group carries out a crimp to the garden shape pipe fitting blank (3) that descends honest material, makes garden shape pipe fitting become cydariform pipe fitting (4); Cover half (6) and dynamic model (5) with the II group carries out the secondary extrusion distortion to the cydariform pipe fitting again, the cydariform pipe fitting become be rectangular pipe fittings (7) roughly; Internal mold (9) and external mold (8) with III group mould carries out processing and forming to pipe fitting at last, and four angle typings of pipe fitting are put in place, and workpiece becomes the rectangle of standard, standard and takes over (10).
Claims (1)
1, a kind of method with the extrusion modling processing rectangular tubes, be as blank with garden shape pipe fitting, with the machine-shaping of cold-stamped method, it is characterized in that this method is to adopt secondary deformation, one-time formed substep extrinsion pressing, with special I, II, three groups of moulds of III are realized at garden shape pipe fitting, wherein, I group mould is made up of the external mold (1) of hexahedral internal mold (2) and band V-shaped groove, II group mould is to be combined by two cover half (6) and dynamic models (5) that respectively have the cuboid of a slope, III group mould is made up of the internal mold (9) of a cuboid and the external mold (8) of a rectangular flute profile
A, internal mold (2) and the external mold (1) organized with I once are out of shape garden shape pipe fitting (3), external mold (1) is placed above the workbench, workpiece (3) frame is placed on the external mold, and internal mold (2) is packed in the cavity of workpiece, is positioned at the outer rear and front end of workpiece with forcing press extrusion internal mold; Transfer turnback to lay again up and down workpiece, the internal mold of packing into carries out same extruding once more, and workpiece is by the tubular cydariform (4) that becomes in garden,
B, with the cover half (6) of II group mould and dynamic model (5) drum-shaped workpiece is carried out secondary extrusion and be out of shape, workpiece is vertical to be laid, and earlier cover half (6) vertically is encased in location in the workpiece, from top to bottom is pressed into workpiece in forcing press dynamic model (5) again, workpiece becomes roughly rectangle (7) by cydariform
C, workpiece is carried out processing and forming with the internal mold (9) and the external mold (8) of III group mould, external mold (8) places on the work top, workpiece (7) is placed on the external mold, and internal mold (9) is packed in the workpiece, from top to bottom pushes the rear and front end that internal mold is positioned at outer workpiece with forcing press; Transfer turnback to lay again up and down workpiece, the internal mold of packing into carries out same extruding once more, and Workpiece shaping is that rectangle is taken over (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063462 CN1669691A (en) | 2005-04-11 | 2005-04-11 | Method for processing rectangular tubes by extrusion molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510063462 CN1669691A (en) | 2005-04-11 | 2005-04-11 | Method for processing rectangular tubes by extrusion molding |
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| CN1669691A true CN1669691A (en) | 2005-09-21 |
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| CN 200510063462 Pending CN1669691A (en) | 2005-04-11 | 2005-04-11 | Method for processing rectangular tubes by extrusion molding |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102773666A (en) * | 2012-07-12 | 2012-11-14 | 江苏省常熟环通实业有限公司 | Processing method for square tube of bearing upright post of automobile |
| CN103009476A (en) * | 2011-09-24 | 2013-04-03 | 吴忠纯 | Square tube pouring mould |
| CN103042063A (en) * | 2012-12-21 | 2013-04-17 | 烟台首钢东星结晶器有限公司 | Thermal extrusion square tube concave die, thermal extrusion square tube punch and small square embryo crystallizer square tube manufacturing method |
-
2005
- 2005-04-11 CN CN 200510063462 patent/CN1669691A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009476A (en) * | 2011-09-24 | 2013-04-03 | 吴忠纯 | Square tube pouring mould |
| CN102773666A (en) * | 2012-07-12 | 2012-11-14 | 江苏省常熟环通实业有限公司 | Processing method for square tube of bearing upright post of automobile |
| CN103042063A (en) * | 2012-12-21 | 2013-04-17 | 烟台首钢东星结晶器有限公司 | Thermal extrusion square tube concave die, thermal extrusion square tube punch and small square embryo crystallizer square tube manufacturing method |
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