CN-122007204-A - Metal pipe continuous preparation device and use method thereof

CN122007204ACN 122007204 ACN122007204 ACN 122007204ACN-122007204-A

Abstract

The invention relates to a metal pipe continuous preparation device and a use method thereof, wherein the metal pipe continuous preparation device comprises an outer shell, a plate guide piece, an extrusion forming assembly, a high-frequency electromagnetic induction heating device and a non-contact ultrasonic vibration device; the extrusion forming assembly consists of a main extrusion wheel, an auxiliary extrusion wheel and an arc-shaped guide limiting block, and the main extrusion wheel, the auxiliary extrusion wheel and the arc-shaped guide limiting block jointly form a continuous forming cavity of the metal plate. The invention integrates the functions of metal plate introduction, continuous multi-wheel extrusion, high-frequency electromagnetic induction heating, non-contact ultrasonic vibration treatment and diameter expansion into a whole, realizes short-flow and continuous pipe preparation, is especially suitable for the preparation of the pipe of black and nonferrous metal materials such as the decrement, ultra-fast cooling pipeline steel and the like developed under the current cost reduction and efficiency improvement guidance, solves the problems of long flow and high energy consumption caused by large internal stress and difficult forming of the material in the traditional UOE and the like, and has the advantages of tissue refinement, high weld strength, strong adaptability, energy conservation, environmental protection and the like.

Inventors

YANG BOWEI
SUI GUANGYU
LIU WENYUE
LIU XIN
LI XINLING
LUO ZHIHUA
LUO JUN
ZHAO LIJUN
MA MING
ZHANG KUN
YAO ZHEN
HAN XU

Assignees

鞍钢集团北京研究院有限公司
鞍钢股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260316

Claims (8)

1. A continuous preparation device for metal pipes is characterized by comprising an outer shell, a plate guide piece, an extrusion forming assembly, a high-frequency electromagnetic induction heating device and a non-contact ultrasonic vibration device, wherein the extrusion forming assembly, the high-frequency electromagnetic induction heating device and the non-contact ultrasonic vibration device are arranged in the outer shell, the plate guide piece is arranged at the top of the outer shell, the plate guide piece is arranged at the plate inlet, the extrusion forming assembly consists of a main extrusion wheel, an auxiliary extrusion wheel and a plurality of arc-shaped guide limiting blocks, the main extrusion wheel is arranged in the middle of an inner cavity of the outer shell, the plurality of auxiliary extrusion wheels are arranged on the periphery of the main extrusion wheel along the circumferential direction, an open-structure plate introducing section is arranged between the 2 auxiliary extrusion wheels corresponding to the lower part of the plate inlet, arc-shaped guide limiting blocks are arranged between the other auxiliary extrusion wheels, the arc-shaped guide limiting blocks are coaxially arranged, each auxiliary extrusion wheel and each arc-shaped guide limiting block can move along the radial direction of a distribution circle, the main extrusion wheel can move in a plane perpendicular to the axial direction in the circumference formed by the auxiliary extrusion wheel and the arc-shaped guide limiting blocks, the main extrusion wheel, the auxiliary extrusion wheel and the arc-shaped guide limiting blocks jointly form a continuous forming cavity, the bottom of the continuous forming cavity is provided with a fine die position, and the high-frequency electromagnetic induction heating device and the non-contact ultrasonic vibration device can be switched between initial fine die positions and fine die positions.
2. The continuous metal pipe preparation device according to claim 1, further comprising a control system, wherein the control ends of the high-frequency electromagnetic induction heating device and the non-contact ultrasonic vibration device are respectively connected with the control system, and the control system is additionally connected with the main extrusion wheel, the auxiliary extrusion wheel and the movement control ends of the arc-shaped guide limiting blocks.
3. The continuous preparation device for metal pipes according to claim 1, wherein the solid phase welding position is further provided with a temperature measuring device, and a signal output end of the temperature measuring device is connected with a control system.
4. The apparatus according to claim 1, wherein the sheet guide is for guiding the metal sheet into the continuous forming chamber, and the sheet guide comprises a sheet introduction plate disposed obliquely.
5. The apparatus of claim 4, wherein the metal plate is a magnetic metal plate, the plate guide further comprises magnetic attraction guide rollers, the plate guide plate is arranged obliquely, and a plurality of magnetic attraction guide rollers are arranged on the top of the plate guide plate along the moving direction of the metal plate.
6. The continuous metal pipe preparation device according to claim 1, wherein the number of the auxiliary extrusion wheels and the arc-shaped guide limiting blocks is 4-10.
7. A method of using the continuous metal pipe preparation device according to any one of claims 1 to 6, comprising the steps of: (1) Sheet metal introduction and continuous deformation: The main extrusion wheel and the auxiliary extrusion wheel are started to rotate relatively, the metal plate moving downwards along the plate guide plate is guided into the continuous forming cavity from the plate guide section, the metal plate is continuously deformed into a cylinder shape through rubbing friction shearing action, and the surface layer tissue of the metal plate is thinned; (2) Solid phase welding and solidification structure regulation: The high-frequency electromagnetic induction heating device moves to a welding fine grain position and is started, instantaneous high-frequency electromagnetic induction heating is carried out on the head-tail joint of the metal plate, real-time temperature detection is carried out by using the temperature measuring device, after the metal plate is heated to a semi-solid temperature interval of the metal plate, the arc-shaped guide limiting block is controlled to move inwards along the radial direction, extrusion force is applied to the metal plate, and solid phase welding of the head-tail joint is realized; (3) Secondary reinforcement of welding seams and expanding of pipes: After the welding line is cooled, the main extrusion wheel and the auxiliary extrusion wheel are rotated reversely, the reverse friction shearing deformation is carried out on the welding line area, the welding line structure is further refined, the connection strength is improved, then, the auxiliary extrusion wheel and the arc-shaped guide limiting block are adjusted to move outwards along the radial direction, the main extrusion wheel expands and rolls outwards along the normal direction of the formed metal pipe, and the diameter of the metal pipe is expanded.
8. The apparatus according to claim 7, wherein the magnetic attraction of the magnetic attraction roller controls the speed of introduction of the metal plate into the continuous forming chamber.

Description

Metal pipe continuous preparation device and use method thereof Technical Field The invention relates to the technical field of metal pipe preparation, in particular to a high-efficiency continuous metal pipe preparation device and a use method thereof. Background The metal pipe is widely applied in the fields of oil gas transportation, chemical industry, aerospace and the like, wherein the straight welded pipe gradually becomes the main stream choice of the long-distance pipeline due to the characteristics of high production efficiency, good dimensional accuracy, low residual stress and the like. The traditional straight welded pipe preparation process such as UOE forming process, JCOE forming process and the like is mature, but has the problems of huge equipment, scattered working procedures, high energy consumption, long flow, multiple dies, low material utilization rate and the like. Especially, the current development of pipeline steel materials is forward developed in the direction of 'cost reduction and efficiency enhancement', the water cooling strengthening effect is fully exerted by reducing the alloy content and optimizing the rolling cooling control process (such as an ultra-fast cooling technology), but the prepared reduced high-strength material has the problems of large internal stress and obvious forming rebound in the subsequent pipe making process, and has insufficient adaptability to the traditional multi-step forming process. For example, in the U-forming stage of the UOE process, it is often necessary to press-bend a high-strength steel sheet multiple times, and direct one-step forming cannot be performed, resulting in an extended process, reduced efficiency, and increased cost. In order to solve the above problems, the prior art is mostly in the traditional "segment forming+post welding" process frame, and the local optimization is performed from different dimensions, which can be summarized in the following aspects: (1) Alloy composition and material design optimization, namely improving the forming and welding performances of the material by optimizing the specific element proportion and the rolling process. For example, "a pipeline steel with excellent high and low temperature performance, a JCOE pipeline and a preparation method thereof", disclosed in chinese patent application CN202410529758.8, aims to provide a steel itself with excellent high and low temperature toughness and weldability by optimizing chemical components (such as C, si, mn and the proportions of microalloying elements Nb, V, ti) of the steel and a controlled rolling and cooling process so as to better withstand subsequent multi-step forming and welding thermal cycles. The method adopts the thought of "material-based art", but does not change the complexity of the process. (2) Optimizing the pipe forming process, namely precisely controlling the pipe forming process, and focusing on improving the precision and efficiency of a single link. As disclosed in the chinese patent application CN202310637478.4, the JCOE tubular control method optimizes the bending parameters of each step of the JCOE process by an intelligent algorithm, and introduces online detection and feedback to reduce ovality and offset of the final tube. The method is essentially to use an intelligent means to carry out 'accurate' repair on the traditional discrete forming process, so that the complexity of the process is not changed, and the control difficulty is increased. (3) The special optimization of the welding technology is carried out aiming at the key quality link of the traditional pipe making by welding, such as 'a manufacturing method of an X80 pipeline steel JCOE longitudinal submerged arc welding pipe' disclosed in China patent application No. CN200710185346.3, and 'a multi-wire submerged arc welding process parameter optimization system of the JCOE steel pipe welding seam' disclosed in China patent application No. CN201810324567.2, and the longitudinal submerged arc welding parameters (such as current, voltage, speed, welding wire angle and the like) in the JCOE process are optimized aiming at high-strength pipeline steel such as X80 and the like so as to ensure the toughness of the high-strength welding seam. Such improvements, while improving the weld joint performance of certain materials, further solidify the technological route of relying on large dedicated welding equipment and multi-pass filler welding. In addition, in terms of welding heat sources, although an induction welding apparatus has been developed, such as an electromagnetic induction welding head and an electromagnetic induction welding apparatus disclosed in chinese patent application CN201920230904.1, which realize efficient heating, it is generally used as a separate welding unit, but is not applied in coupling with an upstream forming process flow. The improvement does not break through the limitation of the traditional technical route in essence, and is still m