CN201264052Y - Inner supporting side roller device for molding steel tube - Google Patents
Inner supporting side roller device for molding steel tube Download PDFInfo
- Publication number
- CN201264052Y CN201264052Y CNU2008201655532U CN200820165553U CN201264052Y CN 201264052 Y CN201264052 Y CN 201264052Y CN U2008201655532 U CNU2008201655532 U CN U2008201655532U CN 200820165553 U CN200820165553 U CN 200820165553U CN 201264052 Y CN201264052 Y CN 201264052Y
- Authority
- CN
- China
- Prior art keywords
- molding
- roller
- forming
- steel pipe
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The utility model discloses an inner-bracing rolling device for molding a steel pipe, which comprises an inner-bracing roller supporting frame, wherein the inner-bracing roller supporting frame is installed on a roller position and comprises a supporting frame, and three supporting wheel assemblies are installed on the supporting frame. The inner-bracing roller supporting frame is additionally installed on the original positions of the third frame and the fourth frame to realize completely multiple purposes of a rough molding roller, and the rough molding quantity is reasonably distributed to enable the deformation quantity of strip steel to satisfy design requirements. The advantages of horizontal roller molding and vertical roller molding are effectively used, and then, a blind area can not be formed on the section of the strip steel; in addition, the adverse effect on molding caused by elastic recovery can be effectively overcome to improve the molding facticity. Strong extrusion is not easy to form on a finely molding part, and overlarge work hardening and asymmetrical stress distribution are inhibited to obtain perfect molding effects.
Description
[technical field]
The utility model relates to the inboard shaped device that TBS profiled section steel band fully is out of shape in forming process in the high-frequency straight seam welded pipe production technology.
[technical background]
The ERW high-frequency straight seam welded pipe is a kind of high-quality medium and small specification steel pipe commonly used in transfer oil and the natural gas line, and numerous advantages are used widely in oil transportation gas transmission and steel construction use field because of its steel strength height, discharge pressure height, caliber precision height, production efficiency height, cost be low etc.High-quality ERW high-frequency straight seam welded pipe is because the effect of mother metalization is stablized and reached to weldquality, can adjoin U.S. with seamless pipe, the molding mode kind is more aborning for the ERW high-frequency straight seam welded pipe, with regard to present market, both requirement can adapt to the tendency of the day of small lot, many kinds, constantly proposed new product standard again aspect product purpose, high-quality.Therefore a large amount of roll frocks must be changed with the variation of product specification, highlights the deficiency of traditional milling train on production efficiency and production cost day by day.For this reason, the mid-40 in last century at first by Torrance company released can dual-purpose part roll the row-roll forming process technology.In the latter stage sixties, Yoder company improves it, becomes present Linear-forming (DMS company), straight-edge-forming (Meer company), the blank of Transition beam system technology such as (ABBEY companies).At the mid-80, development along with computer technology and industrial automation technology, requisite roller level controlling system is greatly improved in row's roller horse shape technology, few with its roll change operation, adapt to many variety production of small lot and roll manufacturing and the low characteristics of management cost easily, with the large-sized rolling mills is the center, has obtained very big popularization.Review the Special Significance of exploitation eighties row roller technology, the driving source key that can be well understood to this technology of exploitation is to use and has both roll, thereby reduces the expense and the roll change workload of roll.The stretching that the use of row's roller can be lowered the steel band edge at thick moulding rear portion has certain inhibitory action for the limit portion unstability before the light-wall pipe welding.Also can reduce simultaneously the excessive problem of roller surface linear differential in traditional milling train.
Pursue not roll change thus in the ERW high-frequency straight seam welded pipe TBS moulding and reach the purpose of producing the different size steel pipe, but in actual moving process TBS row roller forming technology symbiosis some defectives: at first reach the purpose of not roll change in the TBS moulding forcedly and form irrational shaping sendout; Make that thick profiled section moulding amount is insufficient, increased the difficulty of precisive shaped simultaneously; The second precisive shaped correction is bigger than general, and the plastic force of precisive shaped mainly transmits by the limit end surface of steel band, and strong squeezing suppressed the abnormal deformation that causes steel band limit portion easily; The interior angle of steel band end face contacts with prerotation vane at first once more, local plastic takes place under powerful squeezing action flow, and makes the edge thicken that the very big interior burr of formations is difficult to remove totally when causing welding.The problems referred to above have become the key process technology bottleneck that ERW high-frequency straight seam welded pipe industry is devoted to solve.Make a concrete analysis of as follows:
1. irrational shaping amount is distributed, in order to reach the purpose of dual-purpose roll as far as possible, but the roll for horizontal roller frame (Breakdown Stand) lacks effective dual-purpose means again, therefore overcome and reduced the hop count of horizontal roller frame in traditional milling train significantly, most shaping amount is all designed in easy row's roller section of dual-purpose, because the steel band inner surface is lacked effective constraint, the distribution of this moment of flexure is uneven through accurately calculating, and its size be subjected to thickness of strips and self material about, make the distortion of steel band be difficult to control.And for a big chunk scope of steel band limit portion shaping area, this bend mode all can't form moment of flexure, makes it to become the blind area of shaping.
2. the dumming function is weak, and row's roller itself does not have the roll shape that the distortion of steel band is produced the operative constraint effect, compares with the edger roll of traditional milling train, weak more for the control ability of strip deformation shape.But because the problem on the above-mentioned shaping amount method of salary distribution, the groundwork amount of dumming all must be finished by row's roller section.The original main effect of dumming is the steel band cross section deformation is become rough cylindric, makes it can successfully enter the roll pass of smart be shaped (Fin pass).But in row roller forming, dumming has lost original function to a great extent, has increased the difficulty of smart shaping.
3. one of smart purpose that is shaped is that the steel band section behind the dumming is modified to the shape identical with smart shaping groove.The shaping amount of smart forming section that is to say the size to the correction of steel band section configuration, depends primarily on the poor of steel band section configuration behind the dumming and smart shaping groove.Going down of dumming function, the correction that essence thereafter is shaped is generally big than traditional milling train.Smart characteristics that are shaped are that the closed type that is adopted has very strong binding force to steel band.And when the required correction that applies was excessive, steel band was subjected to strong squeezing easily and suppresses in closed type.In row roller forming, this phenomenon rises with steel band intensity and becomes obvious.This is because steel band intensity is big more, and row's roller portion is difficult all the more to the control of strip deformation shape, and the required correction that applies of smart forming section is also just big more.And, since the plastic force in smart the shaping mainly the end face of the limit portion by steel band transmit, strong squeezing suppressed the abnormal deformation that causes steel band limit portion easily.
4. increasing of steel band twisting (twist/rolling) phenomenon and since the small-sized roll of row's roller section to the contained ability of steel band section a little less than, lack the ability that twisting takes place that suppresses.Add edger roll or row roller forming and itself be symmetry with the steel band section configuration and be prerequisite, thus comparatively responsive for the existence of asymmetric factor, in case after twisting occurring, the twisting phenomenon is aggravated gradually, until being shaped normally and welding.For above-mentioned reasons, tediously long row's roller portion is the area of twisting phenomenon pilosity always.
5. the decline of product inherent quality, as mentioned above, in row roller forming, for material and size that difficulty is shaped, the strong extruding that leans against smart forming section often obtains required steel band end surface shape.This not only can produce above-mentioned a series of defective in steel band limit portion, directly has influence on welding quality, also can make the work hardening degree height of steel band integral body owing to required shape correction is excessive, and residual stress is big, skewness.Therefore, even be met the product of specification on appearance and size, but big variation has taken place with the original material of steel band in its material, and the toughness ductility anticorrosion stress-resistant performance of steel duct etc. all may suffer damage or not reach specification requirement.
[summary of the invention]
The purpose of this utility model is exactly in order to solve problems of the prior art, a kind of steel pipe internal support side roller device for forming is proposed, can reasonable distribution moulding amount, the forming degree of deduction precisive shaped, make steel pipe when precisive shaped, be difficult for producing strong squeezing and suppress, thereby improve the quality of products.
For achieving the above object, the utility model patent has proposed a kind of steel pipe internal support side roller device for forming, comprises the inner support roller bracing frame that is installed in the roll location place, and described inner support roller bracing frame comprises bracing frame, and three support wheel assemblies are installed on the support frame as described above.
As preferably, described support wheel assembly comprises bearing pin and is installed in support wheel on the bearing pin that described bearing pin is fixed on the bracing frame.
As preferably, be provided with bearing between described bearing pin and the support wheel.
As preferably, described support wheel adopts nut to be fixed on the bearing pin.
As preferably, described inner support roller bracing frame is installed in the 3rd roll location place of steel pipe forming production line, and the angle between three support wheels is 46 °.
As preferably, described inner support roller bracing frame is installed in the 4th roll location place of steel pipe forming production line, and the angle between three support wheels is 57 °.
The beneficial effect of the utility model patent: the utility model has increased inner support roller bracing frame at original three and the 4th roll location place, realized the complete dual-purposeization of dumming roll, reasonable distribution the shaping amount of dumming, make the strip deformation amount reach designing requirement, horizontal roller shaping and edger roll shaping speciality have separately not only been effectively utilized, make the steel band section not have the shaping blind area, more main is to overcome the adverse effect of elastic recovery to being shaped effectively, has improved the facticity that is shaped.Guaranteed that steel band section configuration behind the dumming is difficult for changing with factors such as the intensity of steel band itself and thickness, and can obtain the very close dumming section configuration of closed type with smart shaping all the time.Improved the shaping degree of dumming, the smart shaping burden that is shaped is greatly reduced.Adopt the continuous crimp method that directly centers on product curvature, the ratio that makes the plastic deformation that is comprised in every section shaping is much larger than strain, and it is stressed evenly to reach steel band inner surface and outer surface easily, reduces and eliminate the purpose of residual stress.Be difficult for producing strong squeezing at smart forming section and suppress, suppressed significantly work hardening and uneven stress distribution, thereby obtained perfect molding effect.
[description of drawings]
Fig. 1 is the structural representation of the utility model steel pipe internal support side roller device for forming;
Fig. 2 is the structural representation of bracing frame in the utility model steel pipe internal support side roller device for forming;
Fig. 3 is the structural representation of support wheel assembly in the utility model steel pipe internal support side roller device for forming;
Fig. 4 is the mounting structure schematic diagram of the utility model on the steel pipe forming production line.
[specific embodiment]
Consult Fig. 1,2,3,4, the steel pipe internal support side roller device for forming comprises the inner support roller bracing frame 1 that is installed in the roll location place, and described inner support roller bracing frame 1 comprises bracing frame 2, and three support wheel assemblies 3 are installed on the support frame as described above 2.Described support wheel assembly 3 comprises bearing pin 4 and the support wheel 5 that is installed on the bearing pin 4, and described bearing pin 4 is fixed on the bracing frame 2.Be provided with bearing 6 between described bearing pin 4 and the support wheel 5.Described support wheel 5 adopts nut 7 to be fixed on the bearing pin 4.1 dismounting easily and the replacing of inner support roller bracing frame, adjustment up and down still utilizes original guiding mechanism to regulate easily.
Described inner support roller bracing frame 1 is installed in the 3rd roll location place of steel pipe forming production line, and the angle between three support wheels 5 is 46 °.Described inner support roller bracing frame 1 is installed in the 4th roll location place of steel pipe forming production line, and the angle between three support wheels 5 is 57 °.Above-mentioned angle is to determine by the design of cotton ginning figure.The utility model utilizes the power transmission shaft of the 3rd and the 4th roll location place and existing equipment structure, and newly-designed inner support roller bracing frame 1 is installed in former roll installation place, makes full use of original structure.The size of roll is determined by the radius and the deformed region of the design of roller floral diagram, has therefore ensured that the roll hole shape meets the requirement of the steel plate curvature variation of steel pipe forming process.Steel band is diminishing along with radius of curvature gradually in traveling process, the plastic deformation of steel band is by the external force effect of support wheel 5, make that the uniformity of plastic deformation of steel band is controlled preferably, along with the continuous reach of steel band cause because of interior tissue and rolling stress for steel band since plastic deformation in advance or the bulge phenomenon of the steel band that causes of the generation that lags behind can be by in full force and effect controlling, thereby avoid the weldquality that causes because of the bulge problem defective, greatly improved the lumber recovery and the qualification rate of steel pipe simultaneously.This device is in the inhomogeneity while of control plastic deformation, because the steel band deflection twisting phenomenon in the steel band forming process has relatively evenly effectively been controlled simultaneously in plastic deformation, reduce the torsion phenomenon of the weld seam joint that causes because the inhomogeneous steel band that causes of steel band plastic deformation is moving partially, thereby better improved the welding quality of weld seam.
The foregoing description is to explanation of the present utility model, is not to qualification of the present utility model, any scheme after the utility model simple transformation is all belonged to protection domain of the present utility model.
Claims (6)
1. steel pipe internal support side roller device for forming, it is characterized in that: comprise the inner support roller bracing frame that is installed in the roll location place, described inner support roller bracing frame comprises bracing frame, and three support wheel assemblies are installed on the support frame as described above.
2. steel pipe internal support side roller device for forming as claimed in claim 1 is characterized in that: described support wheel assembly comprises bearing pin and the support wheel that is installed on the bearing pin, and described bearing pin is fixed on the bracing frame.
3. steel pipe internal support side roller device for forming as claimed in claim 2 is characterized in that: be provided with bearing between described bearing pin and the support wheel.
4. steel pipe internal support side roller device for forming as claimed in claim 3 is characterized in that: described support wheel adopts nut to be fixed on the bearing pin.
5. as claim 2 or 3 or 4 described steel pipe internal support side roller device for forming, it is characterized in that: described inner support roller bracing frame is installed in the 3rd roll location place of steel pipe forming production line, and the angle between three support wheels is 46 °.
6. as claim 2 or 3 or 4 described steel pipe internal support side roller device for forming, it is characterized in that: described inner support roller bracing frame is installed in the 4th roll location place of steel pipe forming production line, and the angle between three support wheels is 57 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201655532U CN201264052Y (en) | 2008-10-13 | 2008-10-13 | Inner supporting side roller device for molding steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201655532U CN201264052Y (en) | 2008-10-13 | 2008-10-13 | Inner supporting side roller device for molding steel tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201264052Y true CN201264052Y (en) | 2009-07-01 |
Family
ID=40830399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201655532U Expired - Lifetime CN201264052Y (en) | 2008-10-13 | 2008-10-13 | Inner supporting side roller device for molding steel tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201264052Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151724A (en) * | 2010-11-25 | 2011-08-17 | 电子科技大学 | Pattern design method of straight-seam welded pipe cage-type forming process |
-
2008
- 2008-10-13 CN CNU2008201655532U patent/CN201264052Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151724A (en) * | 2010-11-25 | 2011-08-17 | 电子科技大学 | Pattern design method of straight-seam welded pipe cage-type forming process |
| CN102151724B (en) * | 2010-11-25 | 2013-01-09 | 电子科技大学 | Pattern design method of straight-seam welded pipe cage-type forming process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1781655A (en) | Process for producing welded pipe | |
| CN104226749B (en) | A kind of forming U shaped articles technique for the manufacture of HFW welded tube | |
| CN103316919B (en) | Mill roll assembly, rolling mill and method for rolling forklift portal frame profile steel | |
| CN103736790B (en) | High-strength automobile transmission shaft tube double-pass W bend combination forming technology | |
| CN204996979U (en) | Automatic bar straightener of unsmooth seamless formula | |
| CN201264052Y (en) | Inner supporting side roller device for molding steel tube | |
| CN101386040A (en) | Internal support side roller device for forming the steel tube | |
| CN2799127Y (en) | Casting blank alignment guide device of continuous casting machine | |
| CN205613867U (en) | Steel band levelling coalignment | |
| CN210280185U (en) | Cold rolling pass structure for rolling hexagonal pipe by circular pipe | |
| CN103357661B (en) | A kind of universal rolling technique of round steel | |
| CN207508046U (en) | A kind of novel embossing device | |
| CN203343170U (en) | Mill roll component and rolling mill for rolling forklift portal frame profile steel | |
| CN202343622U (en) | Short forming machine set for steel pipe | |
| CN103302211B (en) | Small stub bar transverse rolling processing mould | |
| CN202984560U (en) | End flange yoke preforging die for driving shafts | |
| CN103495669B (en) | A kind of modified node method of welded tube extruding roller seat | |
| CN210387013U (en) | Online shaping tool for aluminum profile | |
| CN210876918U (en) | Online forming auxiliary device for square tubes | |
| CN104028685B (en) | A kind of L-type cross section heavy forging blank-making method | |
| CN103302109B (en) | Method for controlling head and tail size amplifying rates dynamically based on different width expansion ratios | |
| CN208772146U (en) | A kind of wire roll | |
| CN201470735U (en) | Mould for bending steel pipe | |
| CN202743858U (en) | Combined fluency strip | |
| CN204412779U (en) | The correcting device that a kind of small-caliber steel pipe external diameter is less than normal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
|
| CX01 | Expiry of patent term |