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Differential temperature drawing process method

A process method, a technology of differential temperature deep drawing, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of energy waste, low heating efficiency, etc., and achieve the effect of improving heating efficiency, improving production efficiency, and easy control

Inactive Publication Date: 2020-11-20
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the heating efficiency of this differential temperature deep drawing method is low, resulting in a waste of energy

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1-7 As shown, if you want to carry out differential temperature deep drawing on a cylindrical part, the steps are as follows:

[0035] S1. Ceramics will not shield the magnetic field, and they will not be heated by induction. Moreover, the strength of some special ceramics can reach 40-100Mpa, and the blankholder force is often within 30Mpa. Therefore, the ring-shaped blankholder 2 of ceramic material is selected; the blankholder 2 A circular cavity 4 is arranged inside, and coils 3 at equal intervals are wound in the cavity 4;

[0036] S2. Fix the die 7 whose middle part is depressed downward to form a groove, place the slab 6 on the top of the die 7, place the blank holder 2 on the upper end of the slab 6, and give the slab 6 a certain blank holder force , at the same time, the punch 5 is placed above the slab 6 corresponding to the groove;

[0037] S3, passing a high-frequency AC current of a certain size to the coil 3 to generate a rapidly changing...

Embodiment 2

[0041] When deep-drawing the box-shaped part, the shape of the blank holder 2 is selected as a rectangle, and there is a circular cavity inside, and the coil 3 is wound in the cavity, such as Figure 8-9 As shown, then according to the steps of embodiment 1, deep drawing can be carried out.

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Abstract

The invention discloses a differential temperature drawing process method, and belongs to the technical field of machining and devices. When a plate blank is drawn, a coil is wound in a blank holder and powered on, eddy current is generated in the plate blank according to the electromagnetic induction principle, heating is conducted, meanwhile, cooling liquid is arranged in a male die, the temperature of the plate blank at the blank holder is high, the temperature of a fillet of the male die is low, and therefore differential temperature drawing is achieved. According to the method, the plateblank is heated through electromagnetic induction, eddy current is generated in the plate blank, the plasticity of the plate blank can be further improved according to the electroplastic principle, and the deformation resistance of the plate blank is reduced; and the electromagnetic induction heating method is high in heating efficiency and easy to realize temperature control.

Description

technical field [0001] The invention relates to a differential temperature deep drawing process, which is used in the technical field of mechanical processing and devices. Background technique [0002] The deep drawing process is widely used in the automobile, aircraft, aerospace and other industries. With the development of the industry, lighter weight and higher strength are often required for deep-drawing parts, so materials such as high-strength steel, aluminum alloy, and magnesium alloy have been widely used. However, the above-mentioned materials have poor plasticity at room temperature and are difficult to form; however, as the temperature increases, they often have better plasticity in a certain temperature range, so hot drawing has been developed. Thermal deep drawing can be divided into isothermal deep drawing and differential temperature deep drawing. Isothermal deep drawing is a deep drawing process in which the punch, die, blank holder and blank are heated to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/22B21D37/16B21D37/10
CPCB21D22/22B21D37/16B21D37/10
Inventor 马瑞孟庆党翟瑞雪赵军
Owner YANSHAN UNIV
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