Heat treatment control system and heat treatment method for steel rail welding seams

A heat treatment method and control system technology, which is applied in the rail weld heat treatment control system and the field of heat treatment, can solve the problems of low degree of automation and inaccurate temperature control, and achieve the effect of reducing errors and precise air blowing positions

Active Publication Date: 2021-09-21
包钢中铁轨道有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of inaccurate temperature control caused by the low degree of automation of existing rail weld heat treatment devices, the present invention provides a highly automated heat treatment control system and heat treatment method

Method used

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  • Heat treatment control system and heat treatment method for steel rail welding seams
  • Heat treatment control system and heat treatment method for steel rail welding seams
  • Heat treatment control system and heat treatment method for steel rail welding seams

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Embodiment

[0043] Such as figure 2 As shown, an existing rail weld heat treatment device includes a roller conveyor line 2, a running device 3, and a KGPS-III-3 type rail dual-frequency normalizing machine 4, an air spray device 5, and a normalizing device 3 are mounted on the running device 3. Coil 6, steel rail 1 is transported vertically through normalizing coil 6 and blowing device 5 through roller conveying line 2 (as image 3 , 4 , 7). Such as image 3 , 4 As shown, in this embodiment, the normalizing coil 6 includes two induction heating coils arranged in parallel, and a crack 7 for detection is left between the two induction heating coils, and heat treatment is performed when the rail weld is located at the position of the crack 7; heat treatment Finally, the running device 3 moves along the rail 1, so that the rail weld seam is positioned in the blast device 5 for blast cooling.

[0044] Such as Figure 8 Shown is the block diagram of the hardware connection relationship ...

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Abstract

The invention discloses a heat treatment control system and heat treatment method for steel rail welding seams. The system is provided with three temperature measuring elements for simultaneously monitoring the temperature of a rail head, the temperature of two base angles (c1) and (c2) in high-frequency normalizing and the austenitizing time of the two base angles (c1) and (c2), and five parameters are comprehensively monitored, so that the problem that when the rail head meets the normalizing requirement, the two base angles and a triangular area do not reach the standard is solved. A fourth temperature measuring element and an air pressure sensor are arranged to monitor the temperature and working air pressure of the rail head in the air spraying cooling process, and the working air pressure is regulated and controlled to be within a set interval; and the air spraying cooling process is accurately monitored. In a brand-new control system, air is automatically sprayed after normalizing is completed, so that the time intervals of all welding seams are consistent, artificial interference is avoided; and a frequency converter is used for control, so that the air spraying position is more accurate than that of manual operation. According to the system, the next action is automatically executed through program control after the technological conditions of each step are met, and errors caused by manual operation are reduced.

Description

technical field [0001] The invention relates to the field of rail weld heat treatment, in particular to a rail weld heat treatment control system and a heat treatment method. Background technique [0002] The rail weld heat treatment process adopts the electromagnetic induction heating method. The principle is that when the high-speed changing AC current passes through the heating coil, the coil will generate a high-speed changing alternating magnetic field. When the rail placed in the magnetic field does not move, and the magnetic field changes with time , the carriers in the rail will move under the action of the eddy electric field to form a current, because the resistance of the rail is very small, so the magnetic field will generate a strong eddy current in the rail, the eddy current will generate a lot of heat, and the temperature of the rail will rise rapidly, reaching purpose of heating. [0003] Such as figure 1 Shown is a cross-sectional view of the rail. Because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/50C21D9/04C21D11/00C21D1/28
CPCC21D9/50C21D9/505C21D9/04C21D9/0062C21D11/00C21D11/005C21D1/28
Inventor 田利明戴聃
Owner 包钢中铁轨道有限责任公司
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