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Heterogeneous material tailor-welded blank hot stamping forming device and method with controllable temperature field

A technology for hot stamping and tailor welded blanks, which is applied in the field of hot stamping forming devices for tailor welded blanks of different materials, which can solve the problems of poor hot stamping forming effect, uncontrollable local forming temperature, failure of hot stamping forming, etc., and achieve high heating efficiency , Realize the effect of automation and continuous, fast heating speed

Inactive Publication Date: 2014-09-10
HARBIN UNIV OF SCI & 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 of poor hot stamping forming effect and even failure of hot stamping forming due to the uncontrollable local forming temperature in the existing hot stamping forming of tailor welded blanks made of dissimilar materials

Method used

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  • Heterogeneous material tailor-welded blank hot stamping forming device and method with controllable temperature field
  • Heterogeneous material tailor-welded blank hot stamping forming device and method with controllable temperature field

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specific Embodiment approach 1

[0027] Specific implementation mode one: combine Figure 1-Figure 2 To illustrate this embodiment, a thermal stamping device for tailor-welded blanks of different materials with controllable temperature field in this embodiment includes a forming die, and the forming die includes a convex plate 1, a punch 2, a blank holder 3, and a die 4 , a plurality of springs 5 ​​and a plurality of studs 6 with the same number as the springs 5, the punch plate 1, the blank holder 3 and the die 4 are arranged in parallel from top to bottom, and the punch 2 is fixedly arranged on the bottom surface of the punch plate 1 At the center position, a plurality of studs 6 are first passed through the counterbore of the convex formwork 1 from top to bottom, and then screwed on the blank holder 3, and the gap between the upper parts of the plurality of studs 6 and the convex formwork 1 Cooperate, each stud 6 is fitted with a spring 5, and the tailor welded blank 7 of dissimilar material is arranged be...

specific Embodiment approach 2

[0029] Specific implementation mode two: combination Figure 1-Figure 2 To describe this embodiment, the material of the plurality of segmented adjustable electrodes 13 and the two clamping electrodes 14 in this embodiment is copper. With such setting, the resistivity of red copper is small, the melting point is high, and the power consumption is small. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0030]Specific implementation mode three: combination Figure 1-Figure 2 To illustrate this embodiment, the hot stamping forming device for tailor-welded blanks made of different materials in this embodiment also includes a plurality of titanium alloy insulation sheets 16, the lower end surfaces of the two rows of segmented adjustable electrodes and the upper end surfaces of the tailor-welded blanks 7 made of different materials A titanium alloy insulation sheet 16 is provided between them, and two titanium alloy insulation sheets 16 are provided between the upper end surfaces of the two clamping electrodes 14 and the lower end surface of the tailored welded blank 7 made of different materials. With such arrangement, the titanium alloy has high resistivity and poor thermal conductivity, which can prevent the heat on the tailor-welded blank 7 of dissimilar materials from being dissipated to the outside through the red copper electrode, and has a good heat preservation effect. O...

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Abstract

The invention provides a heterogeneous material tailor-welded blank hot stamping forming device and method with a controllable temperature field, and relates to a hot stamping forming device and method. The heterogeneous material tailor-welded blank hot stamping forming device and method aim at solving the problems that the hot stamping forming effect of an existing heterogeneous material tailor-welded blank is poor and even hot stamping forming fails. The device is characterized in that two columns of blocking adjustable electrodes and two clamping electrodes are clamped on the upper end face and the lower end face of a heterogeneous material tailor-welded blank, two electrode insulating pressing blocks are arranged on the two columns of blocking adjustable electrodes respectively in a press-fitting mode, two electrode cross-over blocks are cushioned at the lower ends of the two clamping electrodes respectively, the outer end of each blocking adjustable electrode is connected with a thermoregulation rheostat, and the multiple thermoregulation rheostats and a heating power supply form an electrified loop through wires. The method includes the steps that the material of the heterogeneous material tailor-welded blank to be formed is selected; the heterogeneous material tailor-welded blank to be formed is clamped; the heterogeneous material tailor-welded blank to be formed is heated; the heated heterogeneous material tailor-welded blank is stamped. The device and method are used for hot stamping forming of the heterogeneous material tailor-welded blank.

Description

technical field [0001] The invention relates to a device and method for hot stamping forming of tailor welded blanks made of different materials, in particular to a device and method for hot stamping forming of tailor welded blanks made of different materials with controllable temperature field, and belongs to the technical field of hot stamping forming of tailor welded blanks. Background technique [0002] Tailored welded blank forming technology refers to tailor welding blanks of different thicknesses, materials, properties and different surface coatings together to form blanks before forming, and then pressure-forming the required part shape in the mold. Different parts of the structure can obtain different performances, so as to achieve the purpose of reducing the quality of the components, strengthening the local corrosion resistance of the components, and improving the strength and stiffness. Due to the above advantages, the tailor welded blank forming technology has b...

Claims

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Application Information

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IPC IPC(8): B21D22/00
Inventor 李超李彩霞于彦东
Owner HARBIN UNIV OF SCI & TECH
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