SU1003955A1

SU1003955A1 - Apparatus for moulding super-thin wall straight-seam tubes

Info

Publication number: SU1003955A1
Application number: SU813252533A
Authority: SU
Inventors: Георгий Федорович Гурьянов; Валентина Ивановна Завьялова; Владимир Павлович Плешаков; Борис Александрович Егоров; Борис Юрьевич Лукин; Анатолий Георгиевич Поликарпов; Владимир Иванович Григорьев; Усман Гильметдинович Хайбуллин
Original assignee: Предприятие П/Я Р-6378
Priority date: 1981-02-26
Filing date: 1981-02-26
Publication date: 1983-03-15

Description

Изобретение относится к трубосвэ!рочному производству и может быть использовано для сварки особотонкостенных прямошовных труб с толщиной стенки S = 0,2...0,3 мм и соотношением диаметра к толщине (Д/S = 100.. ...625) методом аргонодуговой микроплазменной сварки.The invention relates to pipe welding production and can be used for welding especially thin-walled straight-seam pipes with a wall thickness S = 0.2 ... 0.3 mm and a ratio of diameter to thickness (D / S = 100 .. ... 625) by the method argon-arc microplasma welding.

Известно устройство для непрерывной формовки прямошовных труб, содержащее приводные формующие валки и эджерные ролики, выполненные с буртами для удержания кромок трубной заготовки от перемещений [ΊA device is known for the continuous forming of longitudinal pipes containing drive forming rolls and edger rollers made with collars to hold the edges of the pipe billet from displacement [Ί

Недостатки этого устройства наличие разности линейных скоростей в различных точках по сечению форми руемой трубы, наличие зон растяжения и сжатия кромок ленты на входе в формующие калибры и выходе из них,, знакопеременные напряжения по сечению формуемой трубы, сложность конструк-. ции формующих узлов и оснастки, пов2 реждёние кромок заготовки и трудность обеспечения качества стыка.The disadvantages of this device are the presence of a difference in linear velocities at various points along the cross section of the formed pipe, the presence of zones of tension and compression of the edges of the tape at the entrance to and from the forming gauges, alternating stresses over the cross section of the pipe being formed, and structural complexity. formation of knots and accessories, damage to the edges of the workpiece and the difficulty of ensuring the quality of the joint.

Наиболее близким к предлагаемому ЯВЛЯеТСЯ УСТРОЙСТВО ДЛЯ ФОРМОВКИ ОСО' 5 ботонкостенных прямошовных труб, со-» держащее размещенный в корпусе форми· рующий инструмент и механизм регулирования положения кромок заготовки в виде сухарей, установленных в κορίο пусе с возможностью перемещения и фиксации по дуге окружности и связанных пальцами с кромкодержателят ми [2 JThe closest to the proposed one is the device for forming the CCA '5 botonical straight-seam pipes, ”containing a forming tool and a mechanism for adjusting the position of the edges of the workpiece in the form of crackers installed in the casing with the ability to move and fix along an arc of a circle and connected fingers with edge holders [2 J

Недостатком данного устройства ’⁵ является низкое качество формовки обусловленное потерей продольной и поперечной устойчивости кромок*и формуемого профиля, что приводит к гофроообразованию на кромках, а ²⁰ также образованию хлопунов”, в особенности при формовке особотонкостенных труб с отношением Д/S >· >200. Жесткое крепление проводок механизма регулировки положения кромок, установленного непосредственно за формующим инструментом, не обеспечивает полное прилегание по всей длине проводки к кромкам ленты, что также увеличивает вероятность потери устойчивости кромок, влияет на качество стыка кромок и ухудшает качество сварного шва.The disadvantage of this device ' ⁵ is the low quality of molding due to the loss of longitudinal and lateral stability of the edges * and the formed profile, which leads to corrugation at the edges, and ²⁰ as well as the formation of claps ”, especially when forming especially thin-walled pipes with a ratio D / S>·> 200 . Rigid fastening of the wires of the mechanism for adjusting the position of the edges installed directly behind the forming tool does not provide a full fit along the entire length of the wire to the edges of the tape, which also increases the likelihood of loss of stability of the edges, affects the quality of the joint of the edges and affects the quality of the weld.

Цель изобретения - повышение качества формовки.The purpose of the invention is improving the quality of the molding.

Указанная цель достигается тем, что в устройстве для формовки особотонкостенных прямошовных труб, содержащем размещенный в корпусе формующий инструмент и механизм регулирования положения кромок заготовки в виде сухарей, установленных в корпусе с возможностью перемещения и фиксации по дуге окружности и связанных пальцами с кромкодержателями, формующий инструмент выполнен в виде поворотной фильерной втулки с двумя противоположно расположенными в ее теле Т-образными сквозными радиусными пазами, механизм регулирования положения кромок заготовки снабжен свободно установленными на пальцах скобами с цапфами на боковых стенках, сухари установлены в Т-образных пазах, а кромкодержатели - на упомянутых пальцах.This goal is achieved by the fact that in the device for forming particularly thin longitudinal pipes containing a forming tool located in the housing and a mechanism for adjusting the position of the edges of the workpiece in the form of crackers installed in the housing with the ability to move and fix along an arc of a circle and connected by fingers with edge holders, the forming tool is made in the form of a rotary spinneret sleeve with two T-shaped through radial grooves oppositely located in its body, the mechanism for adjusting the position of the chrome the workpiece provided with the fingers freely mounted on brackets with pins on the side walls, crackers mounted in T-shaped grooves, and kromkoderzhateli - on said fingers.

Устройство снабжено прижимным кли•выполненный из двух планок, жестко соединенных между собой стяжкой 13· На.стяжке 13 размещены стойки 14, связанные с винтом 2 и гайкой 15·The device is equipped with a clamping wrench • made of two slats rigidly connected to each other by a screed 13 · On the screed 13 there are racks 14 connected with a screw 2 and a nut 15 ·

Для фиксации фильерной втулки от поворота в процессе работы в корпусе укреплен винт 16, а для фиксации от осевого перемещения служат шайбы 17.To fix the die sleeve from rotation during operation, a screw 16 is fixed in the housing, and washers 17 are used to fix it from axial movement.

Устройство работает следующим образом.The device operates as follows.

Фильерную втулку настраивают в горизонтальной плоскости посредством болтов 18. Предварительно от15 Формованную ленту - заготовку желобообразной формы заводят в калибрующую щель, образованную направляющим выступом 19 кромкодержателя 9 и рабочей поверхностью фильерной втулки 9· За 20 тем, вращением гайки 15 на винте 2, производится через планки 14, стяжку 13» клин 12, скобы 10 с цапфами \11 и пальцы 8 прижим кромок посредством рабочей поверхности кромко25 держателей. Самоустанавливающиёся кромкодержатели фиксируются в развернутом положении по кромке ленты посредством пальца 8. Разворот трубы-заготовки в окружном направлении jg производится с помощью эксцентрика с последующей фиксацией фильерной втулки от поворота винтом 16. Такое конструктивное выполнение формующего инструмента в виде фильерных втулок ном, установленными в корпусе с возможностью вертикального перемещения ³⁵и взаимодействия с цапфами скоб.The die sleeve is adjusted in the horizontal plane by means of bolts 18. Preliminary from 15 A formed tape — a preform of a gutter-shaped form — is inserted into a calibrating slot formed by the guide protrusion 19 of the edge holder 9 and the working surface of the die sleeve 9 14, screed 13 "wedge 12, staples 10 with trunnions \ 11 and fingers 8 clamp edges by means of working surface of edge 25 holders. Self-aligning edge holders are fixed in the unfolded position along the edge of the tape by means of finger 8. The billet pipe is turned in the circumferential direction jg by means of an eccentric followed by fixing the die sleeve from turning by screw 16. Such a constructive embodiment of the forming tool in the form of die sleeve installed in the housing with the possibility of vertical movement ³⁵ and interaction with the trunnion staples.

На фиг.1 изображено устройство для формовки особотонкостенных прямошовных труб, общий вид; на фиг.2 разрез А-А на фиг.1. .Figure 1 shows a device for forming especially thin-walled straight-seam pipes, General view; figure 2 section aa in figure 1. .

Устройство для формовки особотонкостенных прямошовных труб содержит ползун 1, размещенный с возможностью перемещения от винта 2 в прямоугольных пазах корпуса 3· В отверстия пол- ⁴⁵зуна установлена формующая поворотная, от эксцентрика 4 фильерная втулка 5 с двумя противоположно расположенными' Т-образными сквозными радиусными пазами 6, в которых установлены с ⁵⁰возможностью перемещения и фиксации сухари 7, связанные пальцами 8 с самоу ст а на вли вающи мися кромкодержателя л ми и скобами 10 с цапфами 11 на боковых стенках. В корпусе устройства* 35 с возможностью вертикального перемещения и взаимодействия ^с цапфами скоб установлен прижимной клин 12, улучшает качество формовки за счет более полного прилегания поверхности ленты к поверхности втулки и обеспечения более равномерного.напряженнодеформируемого состояния формуемой полосы. Полное прилегание формуемой полосы к поверхности втулки обеспечивается перемещением корпуса по направляющим вдоль оси трубы.An apparatus for forming thin-walled longitudinally welded tube 1 comprises a slide arranged movably on the rotor 2 in the casing 3 of rectangular slots · pol Apertures ⁴⁵ Zoon mounted rotary molding, from the eccentric sleeve 4 spinneret 5 with two oppositely disposed "T-shaped through-grooves radiused 6, in which rusks 7 are mounted with the possibility of movement and fixation ⁵⁰ , connected by fingers 8 to the self-influencing edge holders and brackets 10 with pins 11 on the side walls. In the case of the device * 35 with the possibility of vertical movement and interaction ^{with the} trunnion pins, a clamping wedge 12 is installed, improves the quality of the molding due to a more complete fit of the surface of the tape to the surface of the sleeve and a more uniform stress-strain state of the formed strip. The full fit of the formed strip to the surface of the sleeve is provided by moving the housing along the guides along the axis of the pipe.

За счет полного прилегания по всей длине са'моустанавливающихся кромкодержателей к кромке ленты уменьшается вероятность гофрообразования на кромках ленты, а наличие калибрующей щели, образованной рабочей поверхностью фильерной втулки и направляющим выступом кромкодержателя, обеспечивает стабилизацию положения кромок, что создает более благоприятные условия для создания плотного стыка кромок в горизонтальной и вертикальной плоскостях в процессе сварки. Все это влияет на качество сварного шва и уменьшает брак в процессе формовки и сварки.Due to the full fit along the entire length of the self-aligning edge holders to the edge of the tape, the probability of corrugation at the edges of the tape is reduced, and the presence of a calibrating gap formed by the working surface of the die sleeve and the guide protrusion of the edge holder ensures stabilization of the position of the edges, which creates more favorable conditions for creating a tight joint edges in horizontal and vertical planes during the welding process. All this affects the quality of the weld and reduces rejects during molding and welding.

Claims

The invention relates to pipe manufacturing and can be used for welding of particularly thin straight conduit pipes with wall thickness S 0, 2 ... 0.3 mm and a ratio of diameter to thickness {D / S 100 .. ... 625) using argon-arc microplasma welding . A device for continuous forming of straight pipes, containing drive forming rolls and edging, made with shoulders for keeping the edges of the tube stock from moving tl3 is known. The disadvantages of this device are the difference in linear velocities at various points along the section of the pipe being formed, the presence of zones of tension and compression of the tape edges at the entrance to and out of forming gauges, alternating stresses along the section of the forming pipe, the complexity of the design of the forming units and tooling, damage to the edges workpieces and the difficulty of ensuring the quality of the joint. The closest to the present invention is a device for forming very thin-walled straight seam pipes, containing a forming tool placed in a housing and a mechanism for adjusting the position of the edges of the workpiece in the form of crackers installed in a housing that can be moved and fixed along a circular arc and connected with fingers to the edge holder mi c2 .. The disadvantage of this device is the low quality of the molding due to the loss of the longitudinal and lateral stability of the edges and the molded profile, which leads to a corrugation on the edges, as well as 6; for developing flakes, especially when forming thin-walled pipes with the ratio D / S 200. Rigid fastening of the wiring of the mechanism for adjusting the edges installed directly behind the forming tool does not ensure full adherence to the tape edges along the entire length, which also increases the probability of loss edge stability affects the quality of the joint edges and degrades the quality of the weld. The purpose of the invention is to improve the quality of molding. This goal is achieved by the fact that in a device for forming highly thin-walled straight seam pipes containing a forming tool placed in a housing and a mechanism for adjusting the position of the edges of the workpiece in the form of crackers mounted in the housing with the possibility of movement and fixation along an arc of a circle and connected with fingers to the hem holders , the forming tool is made in the form of a rotary spun bushing with two T-shaped through radius grooves, which are opposite in its body; a preform is provided with a freely mounted on fingers brackets with pins on the side walls, crackers mounted in T-shaped grooves, and kromkoderzhateli - on said fingers with the device is provided with clamping Kli prefecture mounted in the housing The possibility of vertical movement and engagement with pins staples. Figure 1 shows a device for forming very thin-walled straight flow pipes, general view; in Fig. 2, section A-A in Fig. b. The device for forming highly thin-walled straight flow tubes contains a slider 1 disposed from the screw 2 in the rectangular grooves of the housing 3. A spinner bushing 5 is installed in the opening of the slider. with two OPPORTANT. PUTTED / T-shaped through radial grooves 6, in which the crackers 7s are connected with the fingers 8 with the self-aligning edges and brackets 10 with the trunks 11 on the side walls B to sensor body device with vertically movable and reacting trunnions mounted clamping wedge clamps 12, 10, 54 formed of two strips fixedly interconnected Art zhkoy 13Na. The strut 13 houses the struts AND associated with the screw 2 and the nut 15. The screw 1b is fixed in the housing to fix the spinneret sleeve against rotation during operation, and the washers 17 serve to fix it against axial movement. The device works as follows. The spunbond sleeve is adjusted in the horizontal plane by means of bolts 18. Preliminary from the tape - the gutter blank is driven into the calibrating slit formed by the guide protrusion 19 of the hem holder 9 and the working surface of the spun bushing 9 Then, by rotating the nut 15 on the screw 2, it is produced through strips 1, clamp 13 wedge 12, brackets 10 with pins 11 and pins 8 clamping the edges by means of the working surface of the edge-holders. The self-aligning edge holders are fixed in the unfolded position along the edge of the tape with the finger 8. The workpiece tube is turned in the circumferential direction using an eccentric with subsequent fixing of the spinnerette from turning by means of a screw 16. Such a constructive execution of the forming tool in the form of spinnerettes improves the quality of the forming due to more complete sealing the surface of the tape to the surface of the sleeve and providing a more uniform, stress-deformable condition of the moldable strip. Full adherence of the forming strip to the surface of the sleeve is ensured by moving the housing along the guides along the axis of the pipe. Due to the full fit along the entire length of the self-alignment of the edge-holders to the edge of the tape, the likelihood of corrugation on the edges of the tape is reduced, and the presence of a calibrating slot formed by the working surface of the spinnerette sleeve and the edge-holder guide, provides more favorable conditions for creating a tight fit edges in the horizontal and vertical planes during the welding process. All this affects the quality of the weld and reduces scrap during the process of molding and welding. Claim 1. Device for forming very thin-walled straight pipes, containing a tool and a mechanism placed in a case, adjusting the shelf of the edges of the workpiece in the form of crackers installed in the case with the ability to move and fix along a circular arc and connected with fingers with different holders so that, with the aim of quality bracing, the forming tool is made in the form of a rotary die plate made in the form of a turning fpd, sleeve with a TWUM, oppositely arranged in its body as T-shaped the through radiused grooves, the position of the workpiece edge adjusting mechanism is provided with a freely mounted on the fingers to straps 100 journalled on the side walls 5, crackers mounted in T-shaped grooves, and kroykoderzhateli on said fingers. 2. The device according to Claim 1, characterized in that it is provided with a pressure wedge installed in the housing with the possibility of vertical movement and interaction with the clevis pins. Sources of information taken into account during the examination 1. Mednikov Yu.A. and others. Improving the calibration of the rolls of forming mills of pipe welded pipes - - -, "mnn" novos 10-30 and, 0-60 C6 pro LA. lll "." ъ f f I 1P production of pipes. Moscow, Metallurgists, 1976, No. 2, p. 107 ... 112.

2. USSR author's certificate No. 272258, cl. In 2GS 37/08, 21. Ab.68 (prototype).

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