SU1268239A1

SU1268239A1 - Arrangement for blowing off strip edges and weld

Info

Publication number: SU1268239A1
Application number: SU843821778A
Authority: SU
Inventors: Юрий Викторович Самарянов; Владимир Иванович Кузнецов; Павел Александрович Старшинов; Олег Васильевич Танцырев; Леонид Андреевич Мироненко; Алексей Федорович Шулежко; Игорь Алексеевич Астахов
Original assignee: Уральский научно-исследовательский институт трубной промышленности
Priority date: 1984-12-11
Filing date: 1984-12-11
Publication date: 1986-11-07

Abstract

Изобретение относитс к области изготовлени сварных труб и позвол ет . и Л { . :8 iUP повысить качество удалени внутренне- го грата и эксплуатационную надежность устройства дл удалени грата обдувкой кислородом,Это обеспечиваетс за счет направлени выходных каналов дл истечени кислорода в противопохюжные стороны. Стру из первого канала производит частичную разделку кромок, уменьша величину образующегос грата . Стру из второго канала удал ет оставшийс грат, разглаживает его и удал ет продукты окислени из зоны устройства. Воздушно-вод на смесь, истекающа из дополнительных каналов в сопловой насадке, охлаждает устройi ство и предотвращает налипание на него продуктов окислени металла шва. (Л I 3.п. ф-лы, 1 ил.The invention relates to the manufacture of welded pipes and allows. and L {. : 8 iUP, improve the quality of internal flash removal and the operational reliability of the device for removing flash by blowing oxygen. This is achieved by directing the exit channels for the outflow of oxygen to the anti-swelling side. The stream from the first channel produces a partial edge groove, reducing the amount of burr formed. The stream from the second channel removes the remaining burr, smoothes it and removes oxidation products from the device zone. Air-water on the mixture flowing out of the additional channels in the nozzle attachment cools the device and prevents the oxidation products of the weld metal from sticking to it. (L I 3.pf-ly, 1 ill.

Description

Изобретение относится к трубному производству, в частности к производству электросварных труб, и может быть использовано на трубоэлектросварочных агрегатах для предотвращения 5 образования внутреннего грата в сварных трубах.The invention relates to pipe production, in particular to the production of electric-welded pipes, and can be used on pipe-electric welding units to prevent 5 formation of internal burrs in welded pipes.

Целью изгобретения является повышение качества удаления грата и предотвращение налипания удаляемого ме- 10 талла на устройство.The purpose of the invention is to improve the quality of removal of burr and to prevent sticking of the removed metal to the device.

Выполнение сопловой насадки с двумя выходными каналами, направленными в противоположные стороны под углом а к продольной оси устройства, поз- 15 воляет повысить качество удаления грата, Струя из первого канала производит частичную разделку кромок, уменьшая образующийся грат. Эта же струя удаляет грат, образующийся в 20 процессе сварочной деформации кромок. Вторая струя удаляет оставшийся грат и разглаживает его.The implementation of the nozzle nozzle with two output channels directed in opposite directions at an angle a to the longitudinal axis of the device allows 15 to improve the quality of the removal of the burr. The jet from the first channel partially cuts the edges, reducing the burr. The same jet removes the gratings formed in the 20 process of welding deformation of the edges. The second jet removes the remaining grata and smoothes it.

Дополнительные каналы в сопловой насадке для истечения охлаждающей во-25 ды или воздушно-водяной смеси способствуют удалению продуктов окисления из полости трубы, предотвращают их налипание на устройство.Additional channels in the nozzle nozzle for the outflow of cooling water or air-water mixture contribute to the removal of oxidation products from the pipe cavity, prevent their sticking to the device.

При а < 10° струя газа менее ин-' зо тенсивно воздействует на сварной шов и грат и поэтому эффект снижен.At a <10 °, the gas jet has a less intense effect on the weld and bead and therefore the effect is reduced.

При угле «= 90° струя газа направлена нормально к сварному шву, металл не удаляется в связи с. отсут- ₃₅ствием осевой составляющей, возможен также прожог трубы.At an angle α = 90 °, the gas jet is directed normally to the weld, the metal is not removed in connection with. ₃₅ Corollary absence axial component, also possible burn-through of the pipe.

На чертеже представлено устройство для обдувки кромок штрипса и сварного шва, общий вид. ₄0The drawing shows a device for blowing the edges of the strip and the weld, General view. ₄ 0

Устройство - содержит опорную поворотную штангу 1 с направляющим элементом 2, подшипниковым узлом 3 ее крепления и размещенным в штанге кислородопроводом 4, сопловую насадку 5 с каналами 6 для подачи кислорода, направленными в противоположные стороны под углом сх к продольной оси трубы, и с дополнительными каналами 7 для подачи охлаждающего состава, направленными вдоль наружной поверхности кожуха 8 феррита 9.The device comprises a supporting rotary rod 1 with a guide element 2, a bearing assembly 3 of its fastening and an oxygen pipe 4 located in the rod, a nozzle nozzle 5 with oxygen supply channels 6 directed in opposite directions at an angle cx to the longitudinal axis of the pipe, and with additional channels 7 for supplying a cooling composition directed along the outer surface of the casing 8 of ferrite 9.

Устройство работает следующим образом.The device operates as follows.

В сопловой насадке струя кислорода каналами 6 разделяется на две струи, одна из которых через первый .по ходу движения трубы канал направ пяется под углом 10-80’ на нагретые кромки трубы перед точкой их схождения и на очаг их совместного пластического деформирования, а другая направляется в противоположную сторону на сварной шов под таким же углом,In the nozzle nozzle, the oxygen jet by channels 6 is divided into two jets, one of which, through the first. In the direction of the pipe movement, the channel is directed at an angle of 10-80 'to the heated edges of the pipe before the point of convergence and to the center of their joint plastic deformation, and the other is directed in the opposite direction to the weld at the same angle

Так как воздействие второй струи на шов происходит на большом расстоянии от места воздействия первой струи, температура середины шва успевает понизиться, окисление металла кислородом в середине шва уменьшается и канавка по шву не образуется «Since the action of the second jet on the seam occurs at a great distance from the place of the first jet, the temperature of the middle of the seam has time to decrease, the oxidation of the metal with oxygen in the middle of the seam decreases and the groove along the seam does not form

Продукты окисления шва второй струей подают в трубу, не налипая на устройство и кожух феррита.The products of oxidation of the weld by the second jet are fed into the pipe without adhering to the device and the ferrite casing.

Феррил и сопловая насадка охлаждаются водой или воздушно-водяной смесью, которая через каналы 7 выходит струями параллельно оси трубы навстречу ее движению и предотвращает налипание на феррит и сопловую насадку продуктов окисления шва первой струей.The ferryl and nozzle nozzle are cooled by water or an air-water mixture, which flows through the channels 7 in jets parallel to the axis of the pipe towards its movement and prevents the products of oxidation of the weld from sticking to the ferrite and nozzle nozzle by the first jet.

Элемент 2, жестко закрепленный на штанге 1, входит в зазор между кромками свариваемой трубы и находится постоянно с ними в контакте. В случае поворота трубы в процессе сварки, кромки, перемещаясь, поворачивают все устройство, воздействуя на элемент 2, не давая смещаться струям кислорода относительно сварного шва,The element 2, rigidly fixed on the rod 1, enters the gap between the edges of the welded pipe and is constantly in contact with them. In the case of rotation of the pipe during the welding process, the edges, moving, rotate the entire device, acting on element 2, not allowing oxygen jets to move relative to the weld,

Использование изобретения позволяет повысить качество сварного шва за счет предварительного разогрева кромок кислородом и, кроме того, предотвратить налипание продуктов окисления грата на устройство и феррит.The use of the invention improves the quality of the weld due to the preliminary heating of the edges with oxygen and, in addition, to prevent the accumulation of products of oxidation of grata on the device and ferrite.

Claims

Accurate cwff dffHu chrome y-pipe Supply Codes I Supply / oxygen The invention relates to pipe production, in particular, to the production of electric-welded pipes, and can be used on electric-pipe welded pipes to prevent the formation of internal burrs in welded pipes. The purpose of the invention is to improve the quality of deburring and prevent sticking of the removed metal on the device. Making a nozzle with two output channels, which are directed in opposite directions at an angle W to the longitudinal axis of the device, improves the quality of deburring. The Stru from the first channel produces a partial edge groove, reducing the resulting burr. The same jet removes the burr generated during the welding deformation of the edges. The second jet removes the remaining burr and smoothes it. Additional channels in the nozzle nozzle for the outflow of cooling water or air-water mixture promote the removal of oxidation products from the tube cavity and prevent them sticking to the device, At about 10 ° C, the gas jet less intensively affects the weld and burr and therefore the effect is reduced. At an angle w of 90 °, the gas stream is directed normally to the weld, the metal is not removed due to the absence of an axial component, a burned-through pipe is also possible. The drawing shows a device for blowing the edges of the strip and weld seam, a general view. The device contains a supporting rotary rod 1 with a guide element 2, a bearing assembly 3 of its attachment and an oxygen pipe 4p located in the rod with a nozzle nozzle 5 with channels 6 for supplying oxygen directed in opposite directions at an angle cx to the longitudinal axis of the pipe and Additional channels 7 for supplying the cooling composition, directed along the circumferential surface of the casing 8 of the ferrite 9. The device works as follows. In the nozzle nozzle, the stream of oxygen channels 6 is divided into two jets, one of which Through the first movement of the pipe, the channel is directed at an angle of 10-80 to the heated edges of the pipe before their point of similarity and to the center of their joint plastic deformation, while the other is directed in the opposite direction to the weld under the same angle. the jet to the seam occurs at a large distance from the point of impact of the first jet, the temperature of the middle of the seam manages to decrease, oxidation of the metal with oxygen in the middle of the seam decreases, and a groove along the seam does not form. The products of oxidation of the seam with the second jet are fed into the pipe, the device is not stuck to the device and the ferrite casing, the Ferrile and the nozzle are cooled with water or an air-water mixture, which through the channels 7 jets out parallel to the axis of the pipe against its movement and prevents sticking to the ferrite and nozzle nozzle of the products of oxidation of the seam by the first jet. Element 2, rigidly mounted on the rod 1, enters the gap between the edges of the pipe being welded and is in constant contact with them. In the case of a pipe turning during the welding process, the edges rotate and rotate the entire device, affecting element 2, without allowing displacement oxygen jet relative to the weld. The use of the invention makes it possible to improve the quality of the weld by preheating the edges with α-oxygen and, in addition, to prevent the accumulation of burr oxidation products on the device and ferrite. Claim 1, A device for blowing out the edges of a strip and a weld, containing a support rod with a fastening assembly, an oxygen line and a nozzle nozzle, made with two output channels, characterized in that, in order to improve the quality of deburring, the nozzle output nozzles are directed to opposite sides at the angle Yux "90 ° to the longitudinal axis of the device, 2" Device. According to 1, about one l and each teMts that, in order to prevent sticking of the removed

31268239

the metal on the device, the cooling water nozzle nozzle, or the landing has additional channels for the duo-water mixture.