Method and device thereof for preparing metal semisolid size

A semi-solid slurry and metal technology, which is applied in the near-finished forming field of metal processing, can solve the problems of long process, strict temperature control requirements, and easy oxidation of molten metal, and achieve the effect of preventing oxidation and accurately controlling

Inactive Publication Date: 2010-03-17
KUNMING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0004] However, the above single method has problems such as easy oxidation of molten metal, strict temperature control requirements, inconvenient quantification, and long process.

Method used

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  • Method and device thereof for preparing metal semisolid size
  • Method and device thereof for preparing metal semisolid size
  • Method and device thereof for preparing metal semisolid size

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Embodiment

[0029] see figure 1 , 2 , The device of the present invention includes three parts: a channel system, a temperature control system and an auxiliary device. The channel system consists of a cylindrical punch 1, a flat punch 6, a left half-flat channel 7, and a right half-flat channel 10. The circular barrel 3 cooperates with the corresponding cylindrical punch 1 to form a plunger-type injection mechanism. , and the flat punch 6 cooperates with the left half-flat channel 7 and the right half-flat channel 10 to form another plunger-type injection mechanism. The temperature control system is composed of barrel heating element 4, left half-flat channel heating element 9 and right half-flat channel heating element 11, barrel cooling element 5, left half-flat channel cooling element 8 and right half-flat channel cooling element 12, these Both heating and cooling elements are provided in the outer walls of the circular cartridge and the flat channel, respectively. The auxiliary dev...

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Abstract

The invention relates to a semisolid processing method of metal materials and a corresponding device and belongs to the technical field of near-net shaping of metal finishing. The invention adopts a plunger type injection mechanism with a circular feed cylinder and a corresponding cylindrical punch head matched with each other, and causes metal melt to turn a corner at the circular feed cylinder and flow through a flat passage with the section surface less than the circular feed cylinder by the action of pressure. Under the action of pressure, the metal melt flows through the passage with changed direction and reduced sectional dimension to generate strong shear and chilling and promote proeutectic phase to rapidly nucleate, grow up and be broken and thinned, and finally the high-quality metal semisolid size is obtained. The method and the device can realize short-flow preparation of non-oxidation and good-quality metal semisolid size, as well as the accurate quantification and temperature control of molten metal.

Description

technical field [0001] The invention relates to a method and device for semi-solid processing of metal materials, belonging to the technical field of near net forming of metal processing. Background technique [0002] In the process of metal solidification, vigorous stirring is carried out in the temperature range of solid-liquid two-phase coexistence, or the thermal state of the metal is changed, or a grain refiner is added, or rapid solidification is carried out to obtain a liquid metal mother liquid in which certain spherical particles are evenly suspended. The solid-liquid mixed slurry of the primary solid phase, this semi-solid metal slurry has rheological characteristics, that is, the semi-solid metal slurry has good fluidity under the action of external force, and is easy to make products by ordinary processing methods. A method of processing and forming a metal slurry that is neither completely liquid nor completely solid is called semi-solid metal forming (Semi-Soli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D17/00
Inventor 周荣锋周荣蒋业华黎振华李祖来吉建立杨贵钦
Owner KUNMING UNIV OF SCI & TECH
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