SU776695A1 - Method of withdrawing long mandrel from tube - Google Patents
Method of withdrawing long mandrel from tube Download PDFInfo
- Publication number
- SU776695A1 SU776695A1 SU782657658A SU2657658A SU776695A1 SU 776695 A1 SU776695 A1 SU 776695A1 SU 782657658 A SU782657658 A SU 782657658A SU 2657658 A SU2657658 A SU 2657658A SU 776695 A1 SU776695 A1 SU 776695A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- pipe
- mandrel
- tube
- pipes
- long mandrel
- Prior art date
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- Metal Extraction Processes (AREA)
Description
Изобретение относитс к производству труб волочением, и в частности к освобождению трубы от оправки.The invention relates to the manufacture of pipes by drawing, and in particular to the release of the pipe from the mandrel.
Известен способ извлечени длинной опра.вки из после волочени , включающий обкатку т.рубы И последующее извлечение олравки {.There is a known method of extracting a long casting from after drawing, which includes running in the pipe and subsequent extraction of the file {.
Недостатком известного спосОба вл етс снижение качества пове рхности труб при их обкатке.A disadvantage of the known method is a reduction in the quality of the surface of the pipes when they are run.
Цель изобретени - повышение качества труб.The purpose of the invention is to improve the quality of pipes.
Указанна щель достигаетс за счет того , что провод т обкатку только конца трубы на длине, равной диамет|рам трубы , с образованием конического зазора между трубой и оправкой на этом участке с последующей подачей жидкости под давлением в указанный заз01р.This gap is achieved due to the fact that only the end of the pipe is run-in over a length equal to the diameter of the pipe, with the formation of a conical gap between the pipe and the mandrel in this area with subsequent supply of fluid under pressure to the specified clearance.
Способ по сн етс чертежом, где 1 - длинна олравка, 2 - труба с обкатанным передним жовцом, 3 - эластичный уплотнительный элемент, 4 - цанговый зажим, 5 - ко.рпус гидроцилиндра, 6 - отверстие дл подачи ра бочей жидкости.The method is illustrated in the drawing, where 1 is a long profile, 2 is a pipe with a rolling front runner, 3 is an elastic sealing element, 4 is a collet clamp, 5 is a hydraulic cylinder housing, 6 is an opening for supplying working fluid.
Пример осуществлени способа.An example of the method.
Дл изготовлени тонкостенной трубы из стали марки XISHLOf размером 3X0,25 мм с жесткими допусками по толщине стенки примен етс заготовка размеромFor the manufacture of thin-walled pipes made of steel XISHLOf size 3X0.25 mm with tight tolerances on the wall thickness is applied billet size
4x0,4 мм. Волочение осуществл етс на длинной подвижной оправке диаметром 2,5 мм из стали марки 65Г. Заготовка размером 4X0,4 мм прот гиваетс на волочильном стане на длинной оправке по маршруту: 4X0,4 - .ЗХ0,25 с коэффициентомвыт жки 2,1. В,качестве смазки при волочении примен етс касторовое масло. После волочени осуществл етс обкатка переднего4x0,4 mm. The drawing is carried out on a long movable mandrel with a diameter of 2.5 mm made of 65G steel. A billet with a size of 4x0.4 mm is drawn on a drawing mill on a long mandrel along the route: 4X0.4 - .ЗХ0.25 with a pull out ratio of 2.1. In drawing oil, castor oil is used as a lubricant. After dragging, the front is rolled
10 конца трубы .на длине 5-10 мм на косовалковой обкатной машине до образовани конического зазара (фор.ма раскатанного конца трубы представлена на чертеже). Затем передний конец трубы 2 с оправкой10 pipe ends at a length of 5-10 mm on a roll-up rolling machine prior to the formation of a conical gap (the shape of the rolled pipe end is shown in the drawing). Then the front end of the pipe 2 with mandrel
15 / вставл етс в отверстие эластичного уллотнительного элемента 3, который обжимаетс вокруг трубы цанговым зажимом 4, после чего в гидроцилиндр 5 подаетс через отверстие 6 жидкость под давле20 кием 150-200 ат, обеспечивающа увеличение зазо.ра между трубой и оправкой за счет упругой деформации трубы и удаление одравки.15 / is inserted into the opening of the elastic sealing element 3, which is pressed around the pipe with a collet clamp 4, after which a liquid under pressure of 150-200 atm is supplied through the cylinder 5 through the opening 6, ensuring an increase in the gap between the pipe and mandrel due to elastic deformation pipes and removal of the unit.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782657658A SU776695A1 (en) | 1978-08-21 | 1978-08-21 | Method of withdrawing long mandrel from tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782657658A SU776695A1 (en) | 1978-08-21 | 1978-08-21 | Method of withdrawing long mandrel from tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU776695A1 true SU776695A1 (en) | 1980-11-07 |
Family
ID=20782542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782657658A SU776695A1 (en) | 1978-08-21 | 1978-08-21 | Method of withdrawing long mandrel from tube |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU776695A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2500491C2 (en) * | 2009-06-29 | 2013-12-10 | Даньели Энд К. Оффичине Мекканике С.П.А. | Method of rolling and continuous tandem mill for continuous rolling of hollow billets |
-
1978
- 1978-08-21 SU SU782657658A patent/SU776695A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2500491C2 (en) * | 2009-06-29 | 2013-12-10 | Даньели Энд К. Оффичине Мекканике С.П.А. | Method of rolling and continuous tandem mill for continuous rolling of hollow billets |
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