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Inter-pass electromagnetic induction heating roll bending method and inter-pass electromagnetic induction heating roll bending device

A technology of electromagnetic induction heating and induction heating, which is applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of high temperature rise and rigidity drop of the roll group, low overall reliability, large temperature drop, etc., and achieve work hardening phenomenon Reduction, excellent toughness and ductility, and the effect of reducing heating power consumption

Active Publication Date: 2014-12-10
NORTH CHINA UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention patent can process some high-strength metal slabs, but there are also some problems: the position of the heating device of the roll forming machine is fixed, and the slab can only be heated to a higher temperature at one time before the roller unit
With the deformation of the profile, when the slab enters the later process, the temperature drops greatly, and the forming effect is poor
In addition, because the heating device heats the entire roller unit, the processing power consumption is high, the temperature rise of the roller unit is large, the stiffness drops significantly, and the overall reliability is low

Method used

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  • Inter-pass electromagnetic induction heating roll bending method and inter-pass electromagnetic induction heating roll bending device
  • Inter-pass electromagnetic induction heating roll bending method and inter-pass electromagnetic induction heating roll bending device
  • Inter-pass electromagnetic induction heating roll bending method and inter-pass electromagnetic induction heating roll bending device

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Embodiment 1

[0031] Using the electromagnetic induction heating roll forming device between passes according to the present invention, the forming section is as follows Figure 5 shown. The profiles used are OT4-1 titanium alloy profiles with a forming thickness of about 1.5 mm and a forming speed of 25 mm / s. The total number of induction heating units in the design induction heating roller group is 15. When the leveled titanium profile enters the first induction heating unit, the induction heating temperature is 650°C, and its temperature measurement device uses a radiation pyrometer as a temperature sensor; the induction heating temperature of the remaining induction heating units is controlled at 300-350°C, using Thermocouple type temperature sensor. After the titanium profile is formed by induction heating roll bending, it is cooled to room temperature by the cooling equipment and sent out to the gas shield for subsequent processes such as cutting. After roll forming, the Figure 5...

Embodiment 2

[0033] The electromagnetic induction heating roll forming device between passes is adopted, and the forming section is as follows Figure 5 shown. The profile used is 446 ferritic stainless steel, the forming thickness is about 1.5mm, and the forming speed is 25mm / s. The total number of induction heating units in the design induction heating roller group is 15. When the leveled titanium profile enters the first induction heating unit, the induction heating temperature is 950°C, and its temperature measurement device uses a radiation pyrometer as a temperature sensor; the induction heating temperature of the remaining induction heating units is controlled at 450-500°C, using Thermocouple type temperature sensor. After the profile is formed by induction heating roll bending, it is cooled to room temperature by the cooling equipment and sent out to the gas shield for subsequent processes such as cutting. After roll forming, the Figure 5 Profiles of the cross-sectional shape ...

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Abstract

The invention relates to an inter-pass electromagnetic induction heating roll bending method and an inter-pass electromagnetic induction heating roll bending device, which belong to the field of roll bending technology and equipment, and are used for solving the problem that some difficult-to-cut materials are not easy in roll bending. The inter-pass electromagnetic induction heating roll bending method is characterized in that metal profiles between two adjacent roll bending passes are inductively heated in protective atmosphere, the heating temperature of the profiles is detected by a temperature sensor, the power of an induction control coil is fed back, the profiles heated to a preset temperature are bent by a roll, and the bent profiles are cooled by a cooling device. The metal profiles are heated, bent and cooled in the protective atmosphere, and the profiles discharged out of a gas shielding cover are cut and stacked according to the set length. The metal profiles after induction heating treatment are fine in formability and excellent in mechanical performance.

Description

technical field [0001] The invention relates to a roll forming method and device thereof by electromagnetic induction heating between profiles passes, and belongs to the field of roll forming technology and equipment. Background technique [0002] Roll forming is a high-efficiency, energy-saving, material-saving, advanced and applicable sheet metal forming process technology. It continuously bends metal strips such as coils and strips transversely through sequentially arranged multi-pass forming rolls to make specific cross-section profiles. The products produced by the roll forming process are called roll bending profiles. [0003] At present, my country's national economy continues to develop rapidly, the market demand for roll-bending profiles is increasing day by day, the application range is expanding, and the market prospect is very broad. However, due to the work-hardening phenomenon of traditional roll-formed products during processing, it often leads to uneven mec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D5/14B21D37/16
Inventor 韩飞王世鹏
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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