Pulse current assisted extrusion forming device and extrusion forming method

A technology of extrusion forming and pulse current, applied in metal extrusion, metal extrusion die, metal extrusion control equipment, etc., can solve the problems of uneven distribution of current density in cross-section, complex process flow, low work efficiency, etc. , to achieve the effect of automatic heating, simple process flow and high production efficiency

Inactive Publication Date: 2010-03-17
HARBIN INST OF TECH
0 Cites 37 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0009] The present invention aims to solve the problems of large heat loss and long heating time in the existing extrusion forming device, complex technological process, low working efficiency and uneven distribution of the current density g...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Method used

Specific embodiment two: illustrate this embodiment in conjunction with Fig. 1, this embodiment insulating outer film 2 is made of ceramic material, and the outer mold of insulating ceram...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

A pulse current assisted extrusion forming device and an extrusion forming method relate to an extrusion forming device and a method thereof. The invention solves the problems that the existing extrusion forming device is great in heat loss, and long in heating time, and the existing extrusion forming method is complicated in technical process flow, low in work efficiency and non-homogenous in distribution of density of the current produced inside the blank on the cross-section and easy to cause skin effect. A current-conducting female mold of the device is arranged in a mold cavity of an insulating outer film; a current-conducting male mold and the current-conducting female mold are used as electrodes and connected on a high frequency pulse power source; the pressure within the range of 5-200MPa is applied to the current-conducting male mold by an upper pressure head according to a yield strength value at the temperature selected by the blank to be formed so that the blank is extrudedto be a required shape by the mold after plastic extrusion deformation; the device has high heating speed and improves the work efficiency; and the method uses the heat effect of pulse current and the electro-plastic effect, thereby obviously improving the forming efficiency of the blank, increasing the material plasticity and saving the energy resource.

Application Domain

Extrusion diesExtrusion control devices

Technology Topic

Image

  • Pulse current assisted extrusion forming device and extrusion forming method

Examples

  • Experimental program(11)

Example Embodiment

[0020] Specific embodiment one: combination figure 1 To illustrate this embodiment, the device of this embodiment includes a high-frequency pulse power supply 7, a furnace body 9, a vacuum system 10, a pressurizing device, and a mold; the vacuum system 10 is connected to the inner cavity of the furnace body 9, and the mold is made of an insulating outer film 2. , The conductive convex mold 3 and the conductive concave mold 4, the pressure device is composed of an upper indenter 6 and a lower indenter 8, the lower end of the upper indenter 6 is set in the upper part of the furnace body 9, and the lower indenter 8 is set in the furnace body In the lower part of 9, the lower end of the conductive concave mold 4 is set on the upper end surface of the lower indenter 8, the upper end of the conductive convex mold 3 is connected with the lower end surface of the upper indenter 6, and the conductive concave mold 4 is placed in the cavity of the insulating outer film 2. Among them, the conductive convex mold 3 and the conductive concave mold 4 are connected to the high-frequency pulse power source 7 as electrodes. The conductive convex mold 3 is the upper electrode, and the conductive concave mold 4 is the lower electrode. The high-frequency pulse power source 7, the conductive convex mold 3, the conductive concave mold 4, and the blank 5 to be formed form an electric circuit.

Example Embodiment

[0021] Specific implementation manner two: combination figure 1 To explain this embodiment, the insulating outer film 2 of this embodiment is made of ceramic material, and the outer mold of the insulating ceramic material does not shunt the current flowing through the blank to be formed, thereby reducing energy loss. Other components and connection modes are the same as the first embodiment.

Example Embodiment

[0022] Specific implementation mode three: combination figure 1 To explain this embodiment, the extrusion molding device of this embodiment further includes a far-infrared thermometer 1, the infrared thermometer 1 is provided with a probe 1-1, and the probe 1-1 is arranged in the furnace body 9. The temperature of the blank to be formed is measured in real time by a far infrared thermometer. Other components and connection modes are the same as those in the first or second embodiment.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Classification and recommendation of technical efficacy words

  • Fast heating
  • Improve energy utilization

System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines

ActiveUS10287943B1Eliminating of time lapseFast heatingInternal combustion piston enginesFuel supply apparatusDecreased carbon dioxideExhaust emission
Owner:CLEAN POWER TECH LLC

A device for microwave fluidized drying lignite

InactiveCN102261822ALow drying temperatureImprove energy utilizationDrying solid materials with heatHearth type furnacesEngineeringMicrowave
Owner:KEDA INDUSTRIAL GROUP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products