SU740450A1

SU740450A1 - Apparatus for welding non-rotatable pipe joints

Info

Publication number: SU740450A1
Application number: SU772552146A
Authority: SU
Inventors: Аркадий Михайлович Лошаков; Герман Михайлович Гинзбург; Игорь Яковлевич Станкевич; Анатолий Иванович Савченко; Александр Николаевич Слабовский; Владимир Васильевич Першин
Original assignee: Государственный Союзный Монтажный Трест "Центроэнергомонтаж"
Priority date: 1977-12-09
Filing date: 1977-12-09
Publication date: 1980-06-15

Description

1one

Изобретение относитс к сварке, а именно к устройствам дл автоматической сварки неповоротных стыков труб, и может быть использовано в энергетическом строительстве , т желом, энергетическом, химическом машиностроении и др.The invention relates to welding, in particular, to devices for automatic welding of non-rotary joints of pipes, and can be used in power engineering, heavy, power, chemical engineering, etc.

Известно устройство дл электродуговой сварки с колебани ми сварочной головки , содержаш,ее корпус, сварочную головку и механизм колебани с приводом регул тором амплитуды колебани 1.A device for electric arc welding with oscillations of a welding head is known, comprising, its housing, a welding head and a oscillation mechanism with a drive with an oscillation amplitude regulator 1.

Основным недостатком этого устройства вл етс то, что колебани в свариваемой разделке совершает только неплав щийс электрод, а присадочна проволока подаетс и расплавл етс в моменты ее пересечени электродом (дугой). Поэтому производительность процесса сварки мала, и дл заполнени свариваемой разделки вертикальных , особенно горизонтальных стыков труб, необходимо выполнить несколько проходов и перенастроек устройства.The main disadvantage of this device is that only a non-consumable electrode oscillates in the welded groove, and the filler wire is fed and melted at the moments of its intersection with an electrode (arc). Therefore, the productivity of the welding process is small, and to fill the welded groove of vertical, especially horizontal pipe joints, it is necessary to perform several passes and reconfiguration of the device.

Наиболее близким к предлагаемому по технической сущности и достигаемому результату вл етс устройство, содержащее корпус, вращающуюс планшайбу, сварочную горелку, ось которой совпадает с плоскостью сварки, механизм дл подачи присадочной проволоки и приводной механизм дл колебаний сварочной горелки и присадочной проволоки 2.Closest to the proposed technical essence and the achieved result is a device comprising a housing, a rotating faceplate, a welding torch whose axis coincides with the welding plane, a mechanism for feeding the filler wire and a drive mechanism for oscillations of the welding torch and filler wire 2.

Однако в этом устройстве синхронные колебани неплав щегос электрода и присадочной проволоки совершаютс поперек разделки перпендикул рно к ее стенкам. Это обеспечивает образование большого количества расплавленного металла, что делает невозможным использование этого уст10 ройства при сварке неповоротных горизонтальных стыков труб, так как на вертикальной плоскости невозможно удержать требуемое количество расплавленного металла и получить необходимую форму вала.However, in this device, synchronous oscillations of the non-melting electrode and the filler wire are made across the cut perpendicular to its walls. This ensures the formation of a large amount of molten metal, which makes it impossible to use this device when welding horizontal horizontal joints of pipes, since on the vertical plane it is impossible to hold the required amount of molten metal and obtain the required shape of the shaft.

Цель изобретени - повышение качества сварки вертикально установленных труб.The purpose of the invention is to improve the quality of welding of vertically installed pipes.

Это достигаетс тем, что в предлагаемой конструкции механизм дл колебаний выполнен в виде шарнирно-установленного на планшайбе ползуна и шарнирно св занной с нимThis is achieved by the fact that in the proposed construction the mechanism for oscillations is made in the form of a slider mounted on the faceplate and connected to it

20 зубчатой рейки, смонтированной под углом20 rack, mounted at an angle

Claims

45-60 ° to the face of the faceplate and kinematically connected to the drive, while the welding torch and the path of the mechanism for feeding the filler wire located no tangent to the plane of the joint are fixed on the slide. FIG. 1 shows the proposed device; in fig. 2 - oscillation mechanism, side view; in fig. 3 - the same, top view; in fig. 4 - kinematic diagram of the mechanism of oscillations. The device consists of a body i, a rotating plate 2, on which a mechanism for feeding the filler wire 3 and a mechanism for oscillation 4 are fixed. The mechanism for oscillation consists of a slide 5, on which the filler wire 7 is fixed 6 and the welding head 8 with a welding electrode 9. The slider by means of the electric drive 10 moves along the guides 11, which are connected by the hinge 12 to the plate 2. The electric drive 10 consists of a gearbox with a rack 13, set at an angle of 45-60 ° to the plane of the plate and connected feast 14 with a slider 5. The device operates as follows. The housing 1 is mounted on a vertical pipe. The filler wire 7 and the melting electrode 9 are installed in a welded horizontal groove. Excite the arc, at the same time including the movement of the plate 2 in the welding direction to the left (15) and filler wire 7 to the right (16) and oscillation mechanism 4. The rotational movement of the electric drive 10 is converted by the gear rack 13 into the reciprocating movement of the slide 5. As a result, non-melting electrode 9 and filler wire 7 perform synchronous oscillations in the groove at an angle of 30-45 ° to the direction of welding. Due to the fact that the welding on the vertical plane is carried out along a slide, it is possible to keep the inclined path to hold in the groove the amount necessary for the molten metal to form a crevice of any width and thickness of 5-6 mm. Therefore, the use of the device allows to obtain a joint in a single pass, instead of 3-5 passes, when welding horizontal joints of pipes with a wall thickness of 7 mm by a known device, i.e. 3-4 times increase the productivity of the welding process and significantly improve the quality. With an increase in the wall thickness of the pipes being welded, these figures increase. Claims An apparatus for welding fixed pipe joints, comprising a housing, a rotating faceplate, a welding torch whose axis coincides with the welding plane, a mechanism for feeding the filler wire and a drive mechanism for oscillations of the welding torch and filler wire, characterized in that welding of vertically installed pipes, the mechanism for oscillations is made in the form of a slider pivotally mounted on the faceplate and a gear rack pivotally connected to it mounted at an angle of 45- 60 to the plane of the faceplate and kinematically associated with the actuator, wherein the welding torch and path mechanism for feeding the filler wire is located at a tangent to the joint plane, are fixed to the aforementioned slide. Sources of information taken into account during the examination 1. USSR author's certificate No. 517428, cl. In 23 K 9/30, 1975.

2. USSR author's certificate number 221880, cl. 23 K 3/06, 1967 (prototype).

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