Semi-solid injection moulding method and device for magnesium alloy

An injection molding, semi-solid technology, applied in the field of metal processing technology, can solve the problems of shrinkage hole dimensional stability, poor dimensional stability, low filling density, etc., and achieve the effects of easy processing and manufacturing, compact device structure, and convenient use and maintenance.

Active Publication Date: 2006-08-16
长春利镁科技发展有限公司
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Problems solved by technology

However, in the case of insufficient agitation, too complete dendrites in the swarf, or too high a solids content in the slurry, the dendrites may degenerate insufficiently
This can lead to shrinkage cavity defects and poor dimensional stability in castings, especially in thin-walled parts;
[0007] (2) Dendrite chips are processed by special equipment, which has the problems of high cost, poor dimensional stability, and low filling density

Method used

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  • Semi-solid injection moulding method and device for magnesium alloy
  • Semi-solid injection moulding method and device for magnesium alloy
  • Semi-solid injection moulding method and device for magnesium alloy

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Embodiment Construction

[0035] The magnesium alloy semi-solid injection molding method and device of the present invention will be further described in detail below in conjunction with the embodiments shown in the accompanying drawings.

[0036] The magnesium alloy semi-solid injection molding method of the present invention comprises the following steps:

[0037] (1) The alloy powder prepared separately can be used, or the powder obtained by mechanical stirring and mixing of several alloy powders can be used, and pre-alloy powder can be added to enhance the fluidity of the alloy powder;

[0038] (2) Using a metal powder mixing device, metal powders of different weights weighed according to the set ratio are added to the metal powder mixing container from the inlet, and the metal powder is stirred and mixed under the action of the blade-type stirrer driven by the motor. After the predetermined time is reached, the switch between the metal powder stirring container and the metal powder storage contain...

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Abstract

A semi-solid injection moulding method for Mg alloy includes such steps as mixing metallic powder, gas protecting, quantitative supply, solid-liquid mixing, and semi-solid injection moulding. Its apparatus is composed of a metallic powder mixer consisting of stirring container and storage container, and an injection unit consisting of the metallic sleeve pipe unit comprising sleeve pipe and internal spiral delivering rod, and the cooler and heater for controlling the temp at different positions of sleeve pipe.

Description

technical field [0001] The invention relates to a method for preparing metal semi-solid slurry in metal forming technology and a forming device, belonging to the field of metal processing technology. Background technique [0002] At present, the process route adopted in the production process of metal semi-solid processing technology is to prepare metal semi-solid billets by means of electromagnetic stirring continuous casting, etc., cut the billets into ingots according to the requirements of the parts, and put the ingots into the secondary heating equipment Perform secondary heating and partial remelting, and when the ingot returns to a semi-solid state, put it into the pressure chamber of the die-casting machine for semi-solid die-casting. The processing flow of this process is long, the process is relatively complicated, and secondary heating is required, and the process is difficult to effectively control, and the cost is high, which limits the wide-scale application of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22
Inventor 曲斌崔晓鹏
Owner 长春利镁科技发展有限公司
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