SU759172A1 - Method of producing welded perforated tubes - Google Patents
Method of producing welded perforated tubes Download PDFInfo
- Publication number
- SU759172A1 SU759172A1 SU772529694A SU2529694A SU759172A1 SU 759172 A1 SU759172 A1 SU 759172A1 SU 772529694 A SU772529694 A SU 772529694A SU 2529694 A SU2529694 A SU 2529694A SU 759172 A1 SU759172 A1 SU 759172A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- strip
- perforated tubes
- holes
- producing welded
- welded perforated
- Prior art date
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Description
tt
Изобретение относитс к области производства сварных труб с перфорированной поверхностью и может быть осуществлено на трубоэлектросвароч- j ных станах.The invention relates to the field of production of welded pipes with a perforated surface and can be carried out on an electric welding mill.
Известен способ изготовлени электросварных труб с перфораци ми , при котором в исходной полосе выA known method of manufacturing electric perforated pipes, in which in the initial strip you
ПОЛИЯЮТ круглые отверсти , формуют |QFLASH round holes, molded | Q
полосу в трубную заготовку в клет х с открытыми и закрытыми калибрами, сваривают продольные кромки к калибруют полученную трубу strip in tube billet in cages with open and closed gauges, weld longitudinal edges to calibrate the resulting pipe
Однако указанный способ не позво- . л ет получать готовые трубы с отверсти ми в виде овалиэованного раструба, Taic как отверсти на полосе выполн ют без уточнени изменени форма и размеров перфораций по сечени м JQ видах деформаций, которые претерпевает труба.However, this method is not allowed. It is possible to obtain finished pipes with openings in the form of an ovalized socket, Taic like openings on the strip are performed without specifying changes in the shape and size of perforations along sections JQ of the types of deformations that the pipe undergoes.
Кроме того, схема выполнени отверстий не ув зываетс со схемой формоизменени полосы в калибрах, 25 что не позвол ет использовать эффект изменени первоначальных размеров отверстий за счет разнохарактерных деформаций полосы при ее формовке. При формовке полосы с перфораци ми используютс схемы калибровки формовочных клетей, построенные по принципу равномерного распределени деформаций по клет м, что также не позвол ет обеспечивать изменение первоначальных размеров отверстий до требуемых .In addition, the pattern of holes is not associated with the strip shaping scheme in gauges, 25 which does not allow using the effect of changing the initial dimensions of the holes due to the different deformations of the strip when it is molded. When forming a perforated strip, the calibration stands of the molding stands are used, which are constructed according to the principle of uniform distribution of deformations in the cages, which also makes it impossible to ensure that the initial dimensions of the holes change to the required ones.
Целью изобретени вл етс изготовление сварных труб с отверсти ми в виде овализованного раструба.The aim of the invention is to manufacture welded pipes with openings in the form of an ovalized socket.
Указанна цель достигаетс тем, что в продольном направлении отверсти выполн ют на полосе с шагом, на 10-15% меньшим длины участка внеконтактной деформации при изгибе в открытых калибрах, вдоль кромок полосы отверсти располагают по синусоидальному закону с амплитудой, соизмеримой с половиной шага, крайние отверсти располагают на рассто нии от кромок полосы, меньшем на 20-25% шага , диаметр отверстий определ ют по выраг.сению:This goal is achieved by the fact that in the longitudinal direction the holes are made on a strip with a pitch that is 10-15% shorter than the length of non-contact deformation during bending in open gauges, along the edges of the band the holes are sinusoidally the holes are located at a distance of 20-25% step from the edges of the strip, the diameter of the holes is determined by the angle:
d а + 2 stgoL+ (0.7-0.8) где d - диаметр отверсти (диаметрd а + 2 stgoL + (0.7-0.8) where d is the diameter of the hole (diameter
пуансона);punch);
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772529694A SU759172A1 (en) | 1977-10-06 | 1977-10-06 | Method of producing welded perforated tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772529694A SU759172A1 (en) | 1977-10-06 | 1977-10-06 | Method of producing welded perforated tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU759172A1 true SU759172A1 (en) | 1980-08-30 |
Family
ID=20727152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772529694A SU759172A1 (en) | 1977-10-06 | 1977-10-06 | Method of producing welded perforated tubes |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU759172A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2638894C2 (en) * | 2016-06-03 | 2017-12-18 | Общество с ограниченной ответственностью "КОНМЕТ" | Implant for cranial bones prosthetics and method of implant manufacture for cranial bones prosthetics |
-
1977
- 1977-10-06 SU SU772529694A patent/SU759172A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2638894C2 (en) * | 2016-06-03 | 2017-12-18 | Общество с ограниченной ответственностью "КОНМЕТ" | Implant for cranial bones prosthetics and method of implant manufacture for cranial bones prosthetics |
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