CN102430897A - Thermal deformation technique of flange with abnormal section - Google Patents
Thermal deformation technique of flange with abnormal section Download PDFInfo
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- CN102430897A CN102430897A CN2011103318065A CN201110331806A CN102430897A CN 102430897 A CN102430897 A CN 102430897A CN 2011103318065 A CN2011103318065 A CN 2011103318065A CN 201110331806 A CN201110331806 A CN 201110331806A CN 102430897 A CN102430897 A CN 102430897A
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Abstract
The invention discloses a thermal deformation technique of flange with abnormal section comprising the following steps: heating and upsetting a billet; punching a through hole at centre of one face of the upset billet by a small diameter solid punch; putting a positioning mould on the through hole and pressing the positioning mould by a press; taking out the positioning mould, punching the through hole into a stepped hole by a large diameter solid punch; heating the billet with stepped hole and putting on a ring rolling mill for ring rolling processing. The ring rolling mill is provided with a king roller and a core roller provided with a core mould section. The ring rolling mill rolls the billet into a flange with abnormal section by the king roller, the core roller and the core mould section on the core roller. The technique can process a circular component into a flange with abnormal section by simple technical steps in one single step, not only reducing workload of machine processing, but also saving large amount of raw materials.
Description
Technical field
The present invention relates to a kind of processing technology that is used for wind-power tower adpting flange spare, be specifically related to a kind of thermal deformation technology of odd-shaped cross section flange.
Background technology
Wind-power tower mainly plays a supportive role in wind power generating set, is used to absorb the vibrations of unit simultaneously, and general wind-power tower is made up of four joints, and wind power flange is to be welded on tower tube two ends to play upper and lower pieces connection effect.The production technology of wind-power tower flange does at present, selects for use fast strand or steel ingot as raw material, after heating, jumping-up, punching, goes up ring rolls then, blank is ground into the flange fur ring of square-section.Yet wind power flange cross sectional shape in use is generally L shaped or be T shape; So need through machined, the flange fur ring of square-section is processed into the flange ring of L shaped or T section, adopt this processing technology both to waste time and energy; Consume a large amount of energy; Slattern wide variety of materials again, also can destroy the structure of fibrous tissue of metal inside simultaneously, also can reduce the intensity of ring.Have again in existing punching technology and generally can only on blank, go out aperture; If directly will cause subsiding of blank upper surface towards macropore; And only go out aperture, if will roll out the annular element of odd-shaped cross section, the roll core once mounting that core can't will be housed in the operation of rolling again puts in place.Therefore, be necessary existing flange fur ring processing technology is improved.
Summary of the invention
The objective of the invention is to overcome the defective that exists in the prior art; A kind of thermal deformation technology of odd-shaped cross section flange is provided; This technology can be passed through simple process steps; Once annular element is processed into odd-shaped cross section, both can reduces mach workload, can save great deal of raw materials again.
For realizing above-mentioned purpose, technical scheme of the present invention is the thermal deformation technology of a kind of odd-shaped cross section flange of design, it is characterized in that said thermal deformation technology comprises following processing step:
S1, with steel billet heating back jumping-up;
S2, with the solid punching pin of diameter smaller or equal to 300mm, through hole is gone out from single face in the center of steel billet behind jumping-up;
S3, then positioning module is placed on the said through hole, press is pressed positioning module again; Positioning module comprises great circle shell of column, the round platform section that connects successively and is located at the ladder shaft part that the round platform lower end cooperates with said through hole that the height of positioning module is more than or equal to the thickness of steel billet behind through hole;
S4, then positioning module is taken out, use the solid punching pin with great circle shell of column equal diameters again, said through hole is struck out shoulder hole;
S5, the blank that will go out shoulder hole grind ring processing through putting into after the post bake on the ring rolls; Described ring rolls is provided with king roller and core roller, on said core roller, is provided with the core section, and said ring rolls becomes to have the flange of odd-shaped cross section with billet rolling through the core section on king roller, core roller and the core roller.
Optimized technical scheme is, before positioning module is placed, on the pressure-bearing surface of positioning module, smears the mixed liquor of crystalline flake graphite and diesel oil in the said S3 step, and the while sprinkles the drystone ink powder on the pressure-bearing surface of steel billet.
Further optimized technical scheme is that the rolling mill practice of said S5 begins between the step of the shoulder hole of said steel billet and said core lower surface, to be provided with the gap of 3～5mm.
Further optimized technical scheme is to be provided with location locking mechanism in the upper end of said core roller.
Further optimized technical scheme is that said ring rolls is respectively equipped with movably upper supporting roller and snub pulley in said upper and lower end face.
Optimized technical scheme is, in the rolling step of said S5 with water quench core roller, core and king roller.
Advantage of the present invention and beneficial effect are: owing to adopted and on steel billet, carried out twice punching in the present invention, at first go out aperture, the upper surface of steel billet is not prone to subsides; And then through the impression of positioning module extrusion towards macropore; Since on steel billet, gone out aperture in advance, when using the positioning module steel billet again, can be by the metal of pressed compact material to the aperture place; Therefore during towards macropore, the problem that the steel billet upper surface subsides can not appear with positioning module compressed steel base with the major diameter punching pin.Again owing on steel billet, gone out shoulder hole; Therefore in rolling rolling mill practice; Just can once core roller and core roller be installed; Through king roller, core roller be installed in core roller and upper supporting roller and the snub pulley on the core roller, will become the blank ring of odd-shaped cross section then towards the billet rolling that shoulder hole is arranged.Blank ring through above-mentioned processes both can be saved raw material, can reduce mach workload again, can also reduce the waste of the energy simultaneously.
Description of drawings
Fig. 1 is the L shaped schematic cross-section with the blank ring of the present invention's processing;
Fig. 2 is a thermal deformation process chart of the present invention;
Fig. 3 is the flow chart of punching technology among the present invention;
Fig. 4 is the sketch map that grinds ring technology original state among the present invention;
Fig. 5 is the sketch map that grinds ring middle process or final state among the present invention;
Fig. 6 is the structural representation of positioning module among the present invention.
Among Fig. 1: 1, annular element; Among Fig. 2: 2, heating steel billet; 3, jumping-up; 4, punching; 5, roll ring after the post bake; Among Fig. 3: 6, towards the solid punching pin of small through hole; 6 ', towards the solid punching pin of large through-hole; 7, small through hole; 7 ', large through-hole; 8, positioning module; Among Fig. 4: 9, king roller; 10, core roller; 11, core roller; 12, upper supporting roller; 13, snub pulley
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention further describes.Following examples only are used for technical scheme of the present invention more clearly is described, and can not limit protection scope of the present invention with this.
Like accompanying drawing 2,3,4, shown in 5, the present invention is a kind of thermal deformation technology of odd-shaped cross section flange, and this thermal deformation technology comprises following processing step:
The first step, with steel billet heating back jumping-up;
Second goes on foot, uses the solid punching pin of diameter smaller or equal to 300mm, and through hole is gone out from single face in the center of steel billet behind jumping-up;
The 3rd goes on foot, then positioning module is placed on the said through hole, and press is pressed positioning module again; Positioning module comprises great circle shell of column, the round platform section that connects successively and is located at the ladder shaft part that the round platform lower end cooperates with said through hole that the height of positioning module is more than or equal to the thickness of steel billet behind through hole;
The 4th goes on foot, then positioning module is taken out, and uses and the solid punching pin of great circle shell of column equal diameters diameter as 400mm again, and said through hole is struck out shoulder hole;
The 5th step, the blank that will go out shoulder hole grind ring processing through putting into after the post bake on the ring rolls; Described ring rolls is provided with king roller and core roller, on said core roller, is provided with the core section, and said ring rolls becomes to have the flange in L shaped cross section with billet rolling through the core section on king roller, core roller and the core roller.
Difficulty when preventing that positioning module from taking out; Embodiment preferred is in the present invention; Before positioning module is placed, on the pressure-bearing surface of positioning module, smear the mixed liquor of crystalline flake graphite and diesel oil in the said third step, on the pressure-bearing surface of steel billet, sprinkle the drystone ink powder simultaneously.
Driving force when reducing rolling starting state, further preferred embodiment is in the present invention, between the step of the shoulder hole of said steel billet and said core lower surface, can be provided with the gap of 3～5mm before the rolling mill practice in said the 5th step begins.
In order to prevent to be rolled the upwards play of ring, further optimized technical scheme also has in the present invention, is provided with location locking mechanism in the upper end of said core roller.
In order to control the height dimension that is rolled ring effectively, further optimized technical scheme is that said ring rolls is respectively equipped with movably upper supporting roller and snub pulley in said upper and lower end face.
In order to prevent each roll soften with heat, optimized technical scheme also has, in the rolling step in said the 5th step with water quench core roller, core and king roller.
About 2～10 tons outer its sectional dimension changes the L-shaped cat head type wind tower flange weight in for example rolling cross section slightly through reaching 4～7m, and billet weight just differs greatly.
The design principle of cross section L-shaped cat head type wind tower flange: simple to operate, practical, installation; The base shape is regular, accurate positioning, ring base become second nature well, and more mold exchange is succinct, convenient.
Thermal deformation technology comprises: the steel ingot heating is back with 4000 rammer hydraulic press jumping-up steel billets; Be that the solid punching pin of 300mm is gone out little through hole at the center of steel billet earlier then with diameter; And then aperture is pressed into big shoulder hole with positioning module; Be that the solid punching pin of 400mm is gone out big through hole at the center of steel billet with diameter again, also leave one section shoulder hole bigger that extrudes with positioning module in the upper end of large through-hole than large through-hole diameter; After accomplishing above-mentioned punching technology, again steel billet is carried out post bake, the steel billet after will heating is again put on the ring rolls, and it is rolled into the L-shaped blank ring in cross section.Purpose towards aperture is the excessive collapse-deformation that prevents the steel billet upper surface.When the downward compressed steel base of positioning module, should control the height h that presses down; The thickness that h equals steel billet deducts the degree of depth that positioning module is pressed into steel billet.Because positioning module is when downward compressed steel base, the metal that is extruded will flow in the little through hole, so the collapse-deformation of steel billet upper surface can be very little.Owing to be provided with the step that the large through-hole diameter is 400mm in the lower end of positioning module, positioning module by after taking out in the steel billet, used solid punching pin earlier on flat-die platform the compacting of diameter as 400mm, and then steel billet is forwarded on the punch table towards large through-hole.Wherein the diameter of large through-hole should be set according to the heart roller diameter of ring rolls, and difficulty when preventing that positioning module from taking out can be smeared the mixed liquor of crystalline flake graphite and used oil, and on the pressure-bearing surface of steel billet, sprinkled the drystone ink powder on the pressure-bearing surface of positioning module.
The process of rolling annular element is carried out on ring rolls in the present invention; Like Fig. 3, shown in 4; Characteristics according to ring rolls; Core section on the core roller should drop in the shoulder hole of steel billet behind the forming and punching, and between the core section of shoulder hole and core roller and core roller, will leave the gap of 40mm～50mm.Steel billet is in the original state of installing, the core section bottom of core roller should and the step of shoulder hole between leave the gap of 3mm～5mm.When ring rolls starts, make several circles of steel billet spare slow rotation earlier, in order to eliminate the ovality of steel billet spare, milling method subsequently is similar with the annular element of operating the square-section, in rolling with the core section on water quench king roller, core roller and the core roller.
Cross section L-shaped cat head type wind tower flange is stably in the operation of rolling; Because the core roller all has a coupling mechanism force control in feeding downwards until putting in place; Gu there is a pressure that prevents to scurry on the steel billet spare lower surface of core section to steel billet spare, under the effect of king roller pressure, the moving king roller of not stall drives steel billet spare and the rotation of core roller; Along with constantly reducing of gap between core roller and the king roller; The diameter of ring is increasing, and the following awl roller on the ring rolls plays a part to weigh, and following awl roller constantly moves down also rotation except autobiography also will cooperate epicone roller is accomplished the control of annular element thickness direction.
Wind tower flange can select for use the Q345E steel as raw material in the present invention, and the thermoplasticity of these steel is very good, more helps the moulding of L shaped cross section ring.
The present invention's employed positioning module in the base process includes three sections, and first section is the cylinder with large diameter section, and second section is the round platform section, and the 3rd section is the ladder shaft part.The design of structural size of positioning module is:
H
Mould=H-h+ (300～350) clamp its clamped height;
α＝6°～8°
In the formula: the location diameter of
positioning module;
ring rolls SMIS roller diameter;
B: the steel billet design size, permission designs according to the ring section configuration, but will consider the tonnage of press, more will take precautions against the distortion of steel billet;
H
Mould: the height of positioning module;
H: steel billet thickness;
H: steel billet be positioned mould press down the back residual thickness;
α: the draft angle of positioning module.
The design of the core section on the core roller:
H
Core: fitted position and h value according to the core section are confirmed.
In the formula: the diameter of
core section;
B: steel billet design size;
H
Core: the diameter height of core section.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (6)
1. the thermal deformation technology of an odd-shaped cross section flange is characterized in that, said thermal deformation technology comprises following processing step:
S1, with steel billet heating back jumping-up;
S2, with the solid punching pin of diameter smaller or equal to 300mm, through hole is gone out from single face in the center of steel billet behind jumping-up;
S3, then positioning module is placed on the said through hole, press is pressed positioning module again; Positioning module comprises great circle shell of column, the round platform section that connects successively and is located at the ladder shaft part that the round platform lower end cooperates with said through hole that the height of positioning module is more than or equal to the thickness of steel billet behind through hole;
S4, then positioning module is taken out, use the solid punching pin of diameter again, said through hole is struck out shoulder hole more than or equal to 400mm;
S5, the blank that will go out shoulder hole grind ring processing through putting into after the post bake on the ring rolls; Described ring rolls is provided with king roller and core roller, on said core roller, is provided with the core section, and said ring rolls becomes to have the flange of odd-shaped cross section with billet rolling through the core section on king roller, core roller and the core roller.
2. the thermal deformation technology of odd-shaped cross section flange as claimed in claim 1; It is characterized in that; Before positioning module is placed, on the pressure-bearing surface of positioning module, smear the mixed liquor of crystalline flake graphite and diesel oil in the said S3 step, on the pressure-bearing surface of steel billet, sprinkle the drystone ink powder simultaneously.
3. the thermal deformation technology of odd-shaped cross section flange as claimed in claim 2 is characterized in that, the rolling mill practice of said S5 begins between the step of the shoulder hole of said steel billet and said core lower surface, to be provided with the gap of 3～5mm.
4. the thermal deformation technology of odd-shaped cross section flange as claimed in claim 3 is characterized in that, is provided with location locking mechanism in the upper end of said core roller.
5. the thermal deformation technology of odd-shaped cross section flange as claimed in claim 4 is characterized in that, said ring rolls is respectively equipped with movably upper supporting roller and snub pulley in said upper and lower end face.
6. the thermal deformation technology of odd-shaped cross section flange as claimed in claim 1 is characterized in that, in the rolling step of said S5 with water quench core roller, core and king roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103318065A CN102430897A (en) | 2011-10-28 | 2011-10-28 | Thermal deformation technique of flange with abnormal section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103318065A CN102430897A (en) | 2011-10-28 | 2011-10-28 | Thermal deformation technique of flange with abnormal section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102430897A true CN102430897A (en) | 2012-05-02 |
Family
ID=45979436
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103318065A Pending CN102430897A (en) | 2011-10-28 | 2011-10-28 | Thermal deformation technique of flange with abnormal section |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499928A (en) * | 2015-12-29 | 2016-04-20 | 江阴市恒润环锻有限公司 | Flange machining method |
| CN108405769A (en) * | 2018-01-25 | 2018-08-17 | 张家港中环海陆特锻股份有限公司 | The manufacturing method of forging special-shape ring in open coal mine excavator |
| CN109317589A (en) * | 2018-10-30 | 2019-02-12 | 浙江远大重工锻压有限公司 | The forging and stamping tooling and moulding process of the bowl-shape valve deck of large scale |
| CN110814238A (en) * | 2019-11-07 | 2020-02-21 | 江阴市恒润环锻有限公司 | Processing method of wind power flange special-shaped ring rolling piece |
| CN111618529A (en) * | 2020-04-23 | 2020-09-04 | 陕西斯瑞新材料股份有限公司 | Manufacturing method of CuNi90/10 alloy socket welding flange |
| CN112518244A (en) * | 2020-11-23 | 2021-03-19 | 河北鑫泰重工有限公司 | Manufacturing process of novel flange |
| CN112719171A (en) * | 2020-12-04 | 2021-04-30 | 无锡派克新材料科技股份有限公司 | Near-net forming process of T-shaped forge piece |
| CN112846018A (en) * | 2021-01-05 | 2021-05-28 | 洛阳中重铸锻有限责任公司 | Free forging forming method of hollow forging with stepped inner hole |
| CN113145726A (en) * | 2021-04-19 | 2021-07-23 | 青岛智科机械制造有限公司 | Method and equipment for producing flange |
| CN115430801A (en) * | 2022-11-09 | 2022-12-06 | 无锡派克新材料科技股份有限公司 | Integral forming method for axial special-shaped ring forging |
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| CN101279348A (en) * | 2008-04-23 | 2008-10-08 | 贵州航宇科技发展有限公司 | Method for rolling and shaping aluminum alloy conical ring |
| CN101402163A (en) * | 2007-10-07 | 2009-04-08 | 襄樊市汇聚龙机械制造有限公司 | Bearing ferrule workblank triple external member smithing and molding process |
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| JPS52131967A (en) * | 1976-03-19 | 1977-11-05 | Thyssen Ag | Method of fabricating annular work materials such as blind flanges having remarkably formed cross section and rolling machine for practicing the method |
| CN101020282A (en) * | 2006-12-06 | 2007-08-22 | 贵州安大航空锻造有限责任公司 | Roll forming method of large and medium hollow disc-shaped forge piece |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499928A (en) * | 2015-12-29 | 2016-04-20 | 江阴市恒润环锻有限公司 | Flange machining method |
| CN108405769A (en) * | 2018-01-25 | 2018-08-17 | 张家港中环海陆特锻股份有限公司 | The manufacturing method of forging special-shape ring in open coal mine excavator |
| CN108405769B (en) * | 2018-01-25 | 2019-09-03 | 张家港中环海陆高端装备股份有限公司 | The manufacturing method of forging special-shape ring in open coal mine excavator |
| CN109317589A (en) * | 2018-10-30 | 2019-02-12 | 浙江远大重工锻压有限公司 | The forging and stamping tooling and moulding process of the bowl-shape valve deck of large scale |
| CN110814238A (en) * | 2019-11-07 | 2020-02-21 | 江阴市恒润环锻有限公司 | Processing method of wind power flange special-shaped ring rolling piece |
| CN111618529A (en) * | 2020-04-23 | 2020-09-04 | 陕西斯瑞新材料股份有限公司 | Manufacturing method of CuNi90/10 alloy socket welding flange |
| CN112518244A (en) * | 2020-11-23 | 2021-03-19 | 河北鑫泰重工有限公司 | Manufacturing process of novel flange |
| CN112719171A (en) * | 2020-12-04 | 2021-04-30 | 无锡派克新材料科技股份有限公司 | Near-net forming process of T-shaped forge piece |
| CN112846018A (en) * | 2021-01-05 | 2021-05-28 | 洛阳中重铸锻有限责任公司 | Free forging forming method of hollow forging with stepped inner hole |
| CN113145726A (en) * | 2021-04-19 | 2021-07-23 | 青岛智科机械制造有限公司 | Method and equipment for producing flange |
| CN115430801A (en) * | 2022-11-09 | 2022-12-06 | 无锡派克新材料科技股份有限公司 | Integral forming method for axial special-shaped ring forging |
| CN115430801B (en) * | 2022-11-09 | 2023-02-10 | 无锡派克新材料科技股份有限公司 | Integral forming method for axial special-shaped ring forging |
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Application publication date: 20120502 |