SU1021508A1 - Method of producing beaded portions on pipelines - Google Patents

Abstract

METHOD OF DELIVERY OF PIPELINES, PIPELINES, TREATMENT IN THE EDGE ON THE TUBE OF THE MOUNTAIN BORCH A IN THE form of several conical sections by crimping, by unit 5P01Ts | to her distribution l: py & u and with the fact that, in order to improve the quality of products |, tpyQy the preliminary. but compressed in the area under the collar and utrlschenie for several transitions, and in the area not subjected to pre-compression, molded cone: iy plot with two base, I equal to the diameter of the original pipe, the right large base X before the compressed area.

Description

Ie -regregation refers to the processing of metals by pressure. It can also be used to produce bulges at the ends of pipelines. The known method of disembarking the ends of pipes by recruiting a metal inside the MF. However, it does not ensure the retention of a thin-walled pipe, which makes it impossible to produce upstream thin-walled pipelines of unlimited length. There is a known method for producing thickenings on especially toikbtenin pipelines, which consists in brazing the pipe in the direction of precipitation of the support collar in the form of several wedges by crimping and then distributing the pipe and draining it in the end face 02. A disadvantage of the known method is the impossibility of obtaining high-quality, thin-walled high-quality pipelines. . The purpose of the invention is improving the quality of products. The goal is achieved by the fact that, according to the method of forming a support collar on the pipe in the form of several conical sections by crimping, then distributing the pipe with its draft to the end and calibration, the pipe is pre-compressed in the section under the collar and thickening in several transitions, and in the area that is not subjected to 4; then 1 at the preliminary variable compression, a conical section with a diameter is formed (a solid base equal to the diameter of the original plate, adjacent to the base with a pre-pressed connection at the cutting edge.,.,. / -., . N Fig. 1 shows about% of the end of the pipe; Fig. 2 illustrates the formation of additional crimps on the crimped end of the pipe of the support element in the shape of two cones, and on the main plate - the support element in the shape of a cone; Fig. 3 - transformation of the cone binirovannogo support element in the form of two cones in the support collar in the form of two wedges; in Fig. 4 - the axis of the compressed end of the pipe in Fig. 5 combined calibration of the support collar ri and thickening; in Fig. 6 - the precipitate of the end of the pipe by drawing metal inside; in fig. 7 and 8 - combined to calibrate the support collar and thrust, options; in fig. 9 - calibration of the internal diameter of the support collar to the original internal diameter of the switchgear; in fig. 10 - gauges ka of the support element about the initial internal diameter of the pipe and obtaining the finished product. pipe billet with the initial diameter D and wall thickness S for several transitions is crimped to the diameter te, and the crimped end of the pipe 1 smoothly passes through the conical surface into the original pipe {Fig. one). Then, in the deformed section of pipe 1, a supporting element in the form} 3: VUH cones 2 and 3 is obtained, and on the discharge pipe - supporting element 4 (Fig. 2J. After that, the supporting element 2 and 3 are converted into supporting collar in the form of two conic sections 5 and b (Fig. 3). Next, after several transitions, the compressed end of the pipe is deposited at the end (Fig. 4-8), and then the internal diameter of the support collar and the support element is calibrated to the original internal diameter of the pipe (Fig. 9-10.) The method is realized by the processing of with: Outer 11 with a diameter of 19 mm and a wall thickness of 0.3 mm of stainless steel 12x18 HIOT as follows: The first operation (FNG. 1) crimps the end of pipe I from a diameter of 19 mm to a diameter of 15 mm, includes five transitions, where the end the pipes are compressed to diameters of 18, 17, 16.2, 15.5, and 15 ", respectively." At the same time, the crimped end of the pipe has a length of 50 mm and the wall thickness is 0, 4 mm. The second operation (Fig. 2) includes the formation of a combined support element in 3 with corners, two cones 2 and 30 and 1, at the crimped end of a pipe with a diameter of 15 mm, of a combined support element about equal laid at 28 mm from the end of the end of the pipe, and on the main pipe the formation of the support element 4 in the form of a cone with an angle / equal. The third operation (Fig. Zoo includes the transformation of the combined element in the form of two cones 2 3 into the support collar in the form of two wedges 5 and b with the corresponding angles of each wedge and 29 30; and 1 and O 50. At that, the crimped end of the pipe with a diameter J5 mm thickens inward to a wall thickness of 0.45 mm, length: it becomes 25 points, -, -.,..., The fourth step (Fig. 4) with a diameter of 15 mm, at its end up to a length of 22 MM, obtaining a thickening of 0.5 mm, and the formation of 5 nB red plastic sections corresponding to with angles of fineness equal to 29 ° 0 ° 40 due to lateral deformation of 04.05 mm. Para (Fig. 5) pole (Fig. 6) operacine include: draft of pipe end 1 with a diameter of 15.8 or more at its end up to lengths, respectively, equal to 20 n 18 mm, n wall thickness, equal to 0.5 n 0.6 mm.

, The seventh operation (Fig. 7) is a combination of the calibration of the support collar and the thickening to a diameter of 17 and 16.7 mm.

The eighth step (Fig. 8) is a joint calibration of the support collar and the ut l feny to the corresponding diameters of 19, 19g, 9f and 18.7 mm "

During the ninth round (fig. E), the puellit calibrates the inner diameter of the support collet to the original; tube diameter of the pipe equal to | :. mm, and the sediment end of the pipe with a diameter of 19.9. Yul, at its butt up to LONG, equal to 12 mm, and the thickening of its thickening, equal to 0.75; mm, set Yvtalla inward due to the uniformity of the formation, equal. 0.15 mm. ; ;

Ten operations (Fig. 16} - calibration of the reference element 4 to the initial internal diameter of the pipe equal to mm, obtaining a ready-made product.

Between transition to the removal of the broker and to restore the plastic properties of the metal.

The proposed method for the recovery of pipelines on pipelines by $: is equal to limestone to improve the quality of the products obtained;

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Claims (1)

METHOD FOR PRODUCING THICKNESS ON PIPELINES, which consists in the formation of a support collar on the pipe in the form of several conical sections by crimping, subsequent distribution of the pipe with its upset at the end and calibration, so that with the aim of to improve the quality of products, the pipe is pre-crimped in the section under the shoulder and thickening for several transitions, and in the section not subjected to preliminary compression, a conical section is formed with a diameter of the base equal to the diameter of the original pipe, adjacent to the base with a large base the compressed area.