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Pattern rolling forming unit and welded pipe production system with same

A forming unit and pattern technology, which is applied in the field of welded pipe manufacturing, can solve problems such as pipe gaps and leakage inspections, and achieve the effects of flexible use, strong adaptability, and promotion of use

Active Publication Date: 2021-11-30
HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a pattern embossing forming unit and a welded pipe production system with it to solve the problem that the wall of the existing welded pipe is all patterned and there is a gap between the pipe and the tube plate after the pipe is expanded, and the technology that cannot pass the leakage inspection question

Method used

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  • Pattern rolling forming unit and welded pipe production system with same
  • Pattern rolling forming unit and welded pipe production system with same
  • Pattern rolling forming unit and welded pipe production system with same

Examples

Experimental program
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Effect test

example 1

[0046] Product type: The total length of a single high-efficiency heat exchange tube is 6.0m, of which the length of the external thread of the rolling section is 5.6m, the length of the smooth section at both ends is 0.2m, and the pattern depth of the rolling section is 0.15mm.

[0047] A combined form in which the first roll 20 is a smooth roll and the second roll 30 is a pattern roll is adopted. The operation of the servo motor is controlled by PLC and touch screen. When the linear speed of the embossing roll is set to 2.0m / min, that is, the forward speed of the strip is 2.0m / min, and the set value of the limit member and pressure sensor is 15 tons. Therefore, The squeeze time and release time of the rolls can be determined. The motor is turned on to push the hydraulic cylinder, the embossing roller moves up, presses against the smooth roller, and applies a pressing force to the strip. When the set pressure is reached, the hydraulic cylinder stops working and maintains the ...

example 2

[0049] Product type: The total length of a single high-efficiency heat exchange tube is 6.0m, and the inner wall of the tube is required to have continuous internal threads.

[0050] A combined form in which the first roll 20 is an embossed roll and the second roll 30 is a smooth roll is adopted. The operation of the servo motor is controlled by PLC and touch screen. When the linear speed of the embossing roll is set to 2.0m / min, that is, the forward speed of the strip is 2.0m / min, and the set value of the limit member and pressure sensor is 15 tons. When the set pressure is reached, the hydraulic cylinder stops working and maintains the current pressure to realize the rolling of the strip surface pattern, and the pattern depth is 0.15mm, and the above-mentioned strip can be produced. After the subsequent forming unit, welding unit, annealing treatment, pre-diameter and secondary sizing, etc. of the production line, a high-efficiency heat exchange tube with threads on the inne...

example 3

[0052] Product type: The total length of a single high-efficiency heat exchange tube is 6.0m, of which the length of the external thread in the rolling section is 5.6m, and the external thread is divided into two directions. 0.15mm.

[0053] A combined form in which the first roll 20 is a smooth roll and the second roll 30 is a pattern roll is adopted. At the same time, two sets of racks are arranged in front and back, and the embossing rollers are set at 45° and 135° respectively. The two sets of embossing rollers are connected to the motor through a worm gear reducer. The operation of the servo motor is controlled by the PLC and the touch screen, and the switch of the hydraulic station is controlled by the PLC to ensure that the two groups of embossing rollers are controlled separately and realize the continuity of the pattern. When the line speed of the embossing roll is set to 2.0m / min, that is, the forward speed of the strip is 2.0m / min, and the setting value of the limi...

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Abstract

The invention discloses a pattern rolling forming unit and a welded pipe production system with the same. The pattern rolling forming unit comprises a mounting rack, a first roller and a second roller which cooperate with each other are arranged on the mounting rack, the first roller is rotationally supported on the mounting rack, the second roller is connected with a sliding driving mechanism, and the first roller and the second roller are connected with a rotation driving mechanism for driving the first roller and the second roller to rotate respectively. The sliding driving mechanism is connected with a sliding control system used for controlling the sliding driving mechanism to act, so that under the control of the sliding control system, the sliding driving mechanism drives the second roller to apply adjustable intermittent rolling pressure on strips, and intermittent patterns with the adjustable depth are rolled on the strips. According to the pattern rolling forming unit, the lengths of an embossing section and a smooth surface section on the strips are adjustable, and the pattern depth of the embossing section is controllable, so that the tightness of expanded connection between a heat exchange tube prepared and formed by the strips and a tube plate in the later use process is ensured, and the problems of unqualified leakage inspection and the like existing in a continuous pattern welded tube are solved.

Description

technical field [0001] The invention relates to the technical field of welded pipe manufacturing, in particular, to an embossing forming unit. In addition, the present invention also relates to a welded pipe production system comprising the above-mentioned embossing unit. Background technique [0002] Compared with the smooth surface tube, the high-efficiency heat exchange tube has a higher heat exchange coefficient, so it has a huge application prospect in air cooling and other fields. At present, the production process of high-efficiency heat exchange tubes is mainly to make welded or seamless tubes first, and then perform off-line rolling, which leads to many production steps and low production efficiency of high-efficiency heat exchange tubes, which keeps the price high. [0003] In order to achieve the purpose of on-line production of high-efficiency heat exchange tubes, the use of embossed rolls instead of smooth rolls on the welded pipe forming unit is carried out. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B35/14B21B37/62B21B27/02B21B13/02
CPCB21B1/227B21B35/14B21B37/62B21B27/021B21B13/02B21B2013/021Y02E60/10
Inventor 李军兆张望成梁国栋李强孙清洁鲁蓉蓉黄聪曾宪山
Owner HUNAN XIANGTOU GOLDSKY NEW MATERIALS CO LTD
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