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Rapid uniform heating method for metal tube

A metal pipe, uniform heating technology, used in metal processing equipment, forming tools, manufacturing tools and other directions, can solve the problems of uneven circumferential temperature and axial temperature distribution of metal pipes, affecting the forming of metal pipes, etc. Temperature uniformity, fast and uniform heating, improved heating rate and uniform distribution of temperature

Inactive Publication Date: 2012-08-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing metal pipe induction heating method has uneven distribution of metal pipe circumferential temperature and axial temperature, and affects the forming of metal pipes, and then proposes a rapid and uniform heating method for metal pipes

Method used

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  • Rapid uniform heating method for metal tube
  • Rapid uniform heating method for metal tube
  • Rapid uniform heating method for metal tube

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specific Embodiment approach 1

[0014] Specific implementation mode one: combine figure 1 To illustrate this embodiment, the specific steps of the rapid and uniform heating method for metal pipes in this embodiment are:

[0015] Step 1, placing the metal pipe 2 to be heated in the induction heating coil 1;

[0016] Step 2, the induction heating coil 1 is energized, and the metal pipe 2 starts to heat;

[0017] Step 3: During the heating of the metal pipe 2, the metal pipe 2 and the induction heating coil 1 make relative motion;

[0018] Step 4: After the heating temperature of the metal pipe 2 reaches 300° C. to 1100° C., stop heating, and remove the metal pipe 2 from the induction heating coil 1 .

[0019] In this embodiment, the relative movement between the metal pipe 2 and the induction heating coil 1 means that the metal pipe 2 makes relative movement (circumferential rotation and axial movement), and the induction heating coil 1 remains stationary; or the metal pipe 2 makes a circumferential rotation...

specific Embodiment approach 2

[0020] Specific implementation mode two: combination figure 1 Describe this embodiment, in the step 3 of this embodiment, the metal pipe 2 performs circumferential rotation and axial reciprocating linear motion, the rotation speed of the metal pipe 2 is 5 rpm to 30 rpm, and the axial movement speed is 5mm / s~20mm / s, the moving distance is 5mm~100mm. In this way, this embodiment adopts the method of circumferential rotation and axial movement, which can make the heating conditions of various parts on the metal pipe basically equal, and the circumferential rotation can make the metal pipe at a certain position in the circumferential direction obtain the same heating conditions. The circumferential heating temperature of the metal pipe is uniform, effectively avoiding the uniform distribution of the circumferential temperature of the metal pipe by repeatedly adjusting the distance between the metal pipe and the inner side of the coil in the induction heating coil; the axial recip...

specific Embodiment approach 3

[0021] Specific implementation mode three: combination figure 1 This embodiment is described. The difference between this embodiment and the second embodiment is: the rotation speed of the metal pipe 2 in step three is 18 rpm, and the axial movement speed is 10 mm / s. Such setting meets the design requirements and the forming needs of metal pipes. Others are the same as in the second embodiment.

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Abstract

The invention relates to a heating method for a metal tube, in particular to a rapid uniform heating method for the metal tube. The heating method comprises the steps that firstly, the metal tube to be heated is placed into an induction heating coil; secondly, the induction heating coil is energized, and the metal tube is heated; thirdly, the metal tube and the induction heating coil are moved relatively when the metal tube is heated; and fourthly, the heating is stopped when the heated temperature of the metal tube reaches 300 DEG C to 1100 DEG C, and the metal tube is taken out of the induction heating coil. The rapid uniform heating method is applicable to heating metal tubes and capable of solving the problems that the circumference temperature and the axial temperature of metal tubes are unevenly distributed and the forming of the metal tubes are influenced by the uneven distributed temperatures in prior induction heating methods of the metal tubes.

Description

technical field [0001] The invention relates to a heating method for metal pipes, in particular to a rapid and uniform heating method for metal pipes. Background technique [0002] When forming tubular parts from metal tubing, different types of deformations such as bending, flattening and bulging often occur in the tubing. For parts with complex shapes and large amounts of deformation, in order to obtain the final parts, pipes are required to have high formability. On the one hand, the forming performance of metal pipes is determined by their own material type and organizational state, and on the other hand, it is mainly affected by the forming process and process parameters (such as forming temperature, forming speed, etc.). Increasing the forming temperature can significantly improve the performance of metal pipes. formability. Therefore, forming under heating has become an ideal forming method for metal pipes, especially aluminum alloys, magnesium alloys and other mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/16
Inventor 何祝斌苑世剑王佳张静
Owner HARBIN INST OF TECH
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