Current-assisted rapid hot forming device and method for long and thin high-strength-steel structural components

A technology for structural parts and high-strength steel, which is applied in the field of current-assisted self-resistance heating forming devices, can solve the problems of complicated electrification, high hardness and high melting point, and achieve the effects of uniform temperature distribution, uniform temperature, convenient and firm support

Inactive Publication Date: 2013-11-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the current rapid hot forming device is complicated to power on and the existing rapid hot forming method cannot be applied to materials with high melting point and high hardness, the present invention proposes current-assisted rapid hot forming of high-strength steel slender structural parts Device and method

Method used

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  • Current-assisted rapid hot forming device and method for long and thin high-strength-steel structural components
  • Current-assisted rapid hot forming device and method for long and thin high-strength-steel structural components
  • Current-assisted rapid hot forming device and method for long and thin high-strength-steel structural components

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specific Embodiment approach 1

[0019] Specific implementation mode one: see figure 1 and figure 2 Describe this embodiment, the current-assisted rapid hot forming device for high-strength steel slender structural parts described in this embodiment, it includes a power supply 1, a mold, a pair of sheet metal clamping electrodes 3, two spacers 4 and two insulating mica piece 5,

[0020] Described mold is made up of upper mold 2-1 and lower mold 2-2,

[0021] Two pads 4 are respectively located on both sides of the lower mold 2-2, and a pad 4 and a plate holding electrode 3 are fixedly connected by an insulating mica sheet 5,

[0022] The upper mold 2-1 is located directly above the sheet material 6 to be formed, the lower mold 2-2 is located directly below the sheet material 6 to be formed, and the forming part of the sheet material 6 to be formed is placed in the cavity of the lower mold. The holding electrode 3 is used to clamp the sheet to be formed, and the two electrode ends of the sheet holding elec...

specific Embodiment approach 2

[0025] Embodiment 2: This implementation method is a further limitation of Embodiment 1. It also includes an infrared thermometer, which is used to measure the temperature of the sheet 6 to be formed in real time.

specific Embodiment approach 3

[0026] Embodiment 3: This implementation method is a further limitation of Embodiment 1. The plate holding electrode 3 is a holding member composed of two copper plates.

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Abstract

The invention discloses a current-assisted rapid hot forming device and method for long and thin high-strength-steel structural components, relates to the technical field of high-strength-steel hot forming, particularly relates to a current-assisted self-resistance heating forming device and method and solves the problems that existing rapid hot forming devices are complicated to energize and existing rapid hot forming methods are applied to materials of low melting points and low hardness. The device comprises a power supply, a die, a pair of sheet clamping electrodes, two cushion blocks and two insulating mica sheets, the power supply, the sheet clamping electrodes and a sheet to be formed form an energized loop, the sheet clamping electrodes and the rest part of the die are insulated, insulation is achieved through the high-temperature-resistant insulating mica sheets, and the sheet to be formed is not in contact with the die. The method comprises that joule resistance heat produced by a current passing the sheet is used for heating the sheet directly, and after the forming temperature is reached, the rapid in-situ stamping forming is conducted. The device and the method are used for manufacturing the high-strength-steel structural components for vehicles.

Description

technical field [0001] The invention relates to the technical field of high-strength steel hot forming, in particular to a current-assisted self-resistance heating forming device and method. Background technique [0002] In recent years, with the continuous development of the automobile industry, a series of problems such as energy shortage and environmental pollution have become increasingly prominent, and body weight reduction and energy saving and consumption reduction have become the common choices of the mainstream automobile industry. High-strength steel materials have been used more and more in the automotive industry because of their significant role in reducing body weight. However, at room temperature, the plastic deformation range of high-strength steel is very small, the required forming force is large, the rebound after forming is serious, easy to crack, and the damage to the mold is very serious, and the formability is very poor. The traditional cold stamping ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/02B21D37/16
Inventor 王国峰吴雪松刘淑芬孙超高静代想想杜志豪
Owner HARBIN INST OF TECH
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