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An electromagnetic pulse radial powder compaction device and compaction method

A technology of electromagnetic pulse and compaction device, applied in the field of powder forming, can solve the problem of difficult to take out the core column, and achieve the effects of short pressing time, large discharge energy and high efficiency

Active Publication Date: 2018-07-31
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For hollow axisymmetric parts, if the inner hole is not a cylindrical through hole, after the powder is compacted, it is difficult to take out the core column used to shape the hollow, so it is limited to the parts whose inner hole is cylindrical

Method used

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  • An electromagnetic pulse radial powder compaction device and compaction method
  • An electromagnetic pulse radial powder compaction device and compaction method
  • An electromagnetic pulse radial powder compaction device and compaction method

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Embodiment Construction

[0031] The device of the present invention will be further illustrated and described below in conjunction with the drawings in the embodiments of the present invention.

[0032] Depend on figure 1 Shown, device of the present invention is made up of power supply device, fixing device and compacting device.

[0033] The power supply device consists of a high-voltage transformer 10, a charging resistor 11, a charging circuit composed of a high-voltage rectifier 12, and a pulse discharge circuit composed of a capacitor bank 13. The high-voltage switch 14 is used to complete charging preparation and pulse discharge control during the entire forming process.

[0034] The fixing device is composed of a base 9, an end cover 16, an insulating protective cover 5, and a fixing bolt 4. It positions and fixes the compacting device, wraps the compacting device, and isolates high-voltage pulse discharge.

[0035] Insert the insulating protective cover 5 into the positioning groove 18 on th...

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Abstract

The invention relates to a powder compacting device based on electromagnetic pulses. The powder compacting device comprises a power supply unit, a fixing unit and a compacting unit. The powder compacting device is characterized in that the power supply unit is composed of a charging circuit and a pulse discharging circuit, the charging circuit is composed of a high-voltage transformer (10), a charging resistor (11) and a high-voltage rectifier (12), and the pulse discharging circuit is composed of a capacitor set (13). Since pressure used in the electromagnetic pulse radial powder compacting process is radial force distributed evenly and is evenly distributed in the circumferential direction and the axial direction, the powder compacting device is suitable for forming axisymmetric shaft parts, pipe parts and gear parts.

Description

technical field [0001] The invention belongs to the field of powder forming, and in particular relates to an electromagnetic pulse-based powder compaction device and compaction method. technical background [0002] Powder forming is a forming process that compacts loose metal powder (or a mixture of metal and non-metal powder) into a compact of a certain shape, size, density and strength under a certain pressure. This process is one of the key processes of powder metallurgy technology, which has a great influence on the performance of powder metallurgy parts. Parts manufactured by powder metallurgy technology have unique chemical composition and mechanical and physical properties, which can meet various demanding work requirements. Powder forming directly compresses the raw material powder into a blank of the required shape, and the subsequent process only needs a small amount of cutting process to make parts, which has the characteristics of low energy consumption, low raw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/087B22F3/03
CPCB22F3/03B22F3/087
Inventor 崔俊佳孙光永李光耀袁伟
Owner HUNAN UNIV
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