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Semisolid state forming device and forming process

A technology of semi-solid forming and induction heating device, which is applied in the field of semi-solid forming devices and processes of magnesium alloy and aluminum alloy. It can solve the problems of high solid particle content, high cost, and semi-solid process cannot be an ideal production process. High efficiency, reduce heat loss, save the effect of heat preservation and conveying process

Inactive Publication Date: 2010-11-03
DALIAN JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Costly die casting equipment modifications, coupled with inherent fluid flow challenges and alloy limitations with high solids content, make these semi-solid processes less than ideal for most die casting manufacturers

Method used

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  • Semisolid state forming device and forming process
  • Semisolid state forming device and forming process
  • Semisolid state forming device and forming process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The semi-solid forming device includes a die-casting machine and an induction heating device, and the induction heating device includes a plurality of heating chambers; the diameter of the single heating chamber is matched one by one with the inner diameter of the die-casting machine and the outer diameter of the injection piston. The pressure chamber of the die-casting machine, each heating chamber and the injection piston sleeve are respectively provided with a positioning device; in the state of injection, one of the heating chambers is just connected with the pressure chamber of the die-casting machine at its injection position, and is connected with the The injection piston is coaxial, such as Image 6 shown.

[0035] Both sides of the induction heating device are provided with sealed insulation baffles, including a front baffle and a rear baffle, respectively as image 3 and Figure 4 As shown, the baffle plate is fixed relative to the base, and the injection po...

Embodiment 2

[0045] The semi-solid forming device used is the same as in Example 1, and the initial position of the heating chamber of the induction heating device: figure 2 Shown heating chamber a with image 3 The feed ports shown are coincident.

[0046] Process parameters are as follows, different from Example 1, adopt frequency conversion heating:

[0047] by figure 2 Take the heating chamber a shown as an example: initial power: 30kw, the power of the heating chamber will automatically decrease by 5kw when the heating chamber moves one station, and the power of the heating chamber will automatically return to 30kw after injection, and the initial temperature of the alloy bar: 450°C.

[0048] The specific process steps are as follows:

[0049] The AZ91D magnesium alloy bar is made of image 3 The feed inlet shown is placed in the induction heating chamber a; according to the production beat (52s), the heating chamber moves to the left by one station, at this time figure 2 shown ...

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Abstract

The invention relates to a semisolid state forming device and a forming process. The forming device comprises a die casting machine and an induction heating apparatus, wherein the induction heating apparatus comprises a plurality of heating chambers, and in an injection state, one of the heating chambers is just matched and connected with a pressure chamber of the die casting machine at the injection position and is coaxial with an injection piston. Two sides of each heating chamber are provided with sealing and insulating baffles, and the immovable baffles are provided with injection ports and feeding holes. The power of each heating chamber can be independently adjusted. The invention has the advantages of simplifying the device, having simple process, saving energy sources, reducing the heat quantity loss, being not easy to oxidize, improving the production efficiency and ensuring the quality and the stability of the product. A video, thixotropy and temperature detecting device can comprehensively, intuitively, precisely and effectively control the forming capacity on line.

Description

technical field [0001] The invention relates to a semi-solid forming device and process, in particular to a semi-solid forming device and process for magnesium alloy and aluminum alloy. Background technique [0002] Magnesium is the lightest engineering metal material (density 1.8g / cm 3 , which is 2 / 3 of aluminum and 1 / 4 of steel), has a series of unique features such as light specific gravity, high specific strength and specific stiffness, good damping and machinability, good thermal conductivity, strong electromagnetic shielding ability and easy recycling. It can meet the requirements of aviation, aerospace and modern automobile industries for weight reduction and energy saving, and can replace engineering plastics as housings and structural parts of electronic equipment to meet the light, thin, miniaturization, high integration and environmental protection of products and other requirements to improve energy utilization efficiency. [0003] However, magnesium alloys are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/04B22D17/32
Inventor 刘赵铭权高峰张英波王恒鳌艾秀兰耶西武
Owner DALIAN JIAOTONG UNIVERSITY