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Light alloy semisolid slurry preparation technique and device

A technology of semi-solid slurry and preparation process, which is applied in the direction of manufacturing tools, metal processing equipment, casting equipment, etc., to achieve the effect of good universality and quality improvement

Active Publication Date: 2017-12-22
ZHUHAI RUNXINGTAI ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems described above

Method used

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  • Light alloy semisolid slurry preparation technique and device
  • Light alloy semisolid slurry preparation technique and device

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preparation example Construction

[0050] The invention provides a preparation process of light alloy semi-solid slurry. The stirring equipment is put into the slurry container, the liquid alloy is stirred, and the processing gas is passed into it. When the temperature of the alloy liquid drops to the solid-liquid temperature range, the The light alloy semi-solid slurry;

[0051] Wherein, the processing gas enters the alloy liquid through the ventilation hole on the stirring device under a predetermined pressure, the rotation speed of the stirring device is not lower than 800 revolutions per minute, and the diameter of the ventilation hole is not more than 2 mm, which can be used in pulping. Simultaneously refining the semi-solid slurry.

[0052] The preparation process of the semi-solid slurry can be used in continuous die-casting production, the container for holding the slurry can be a spoon of a die-casting machine, and the prepared die-casting product can be subjected to T6 heat treatment to improve mechan...

Embodiment 1

[0057] combine figure 1 , Example 1 Use a slurry making device for continuous die casting, use a slurry container to scoop 5kg of aluminum alloy liquid, put the stirring device into the slurry container, stir the aluminum alloy liquid at 670 ° C, and pass argon into it Air, control the rotation speed of the stirring rod to 900 rpm, the pressure of argon gas to 0.15 MPa, the flow rate to 13 L / min, and the aeration and stirring time to 8 s to prepare a semi-solid slurry at a temperature of 615 °C. Wherein, the diameter of the stirring rod is 30 mm, 5 ventilation holes are distributed on the bottom surface of the stirring rod, and 10 ventilation holes are distributed on the circumferential surface 8 mm from the bottom surface of the stirring rod, and the diameter of the ventilation holes is 0.8 mm.

Embodiment 2

[0059] combine figure 1 , Example 2 Use a slurry making device for continuous die casting, use a slurry container to scoop up 12kg of aluminum alloy liquid, put the stirring device into the slurry container, stir the aluminum alloy liquid at 670 ° C, and pass argon into it Air, control the rotation speed of the stirring rod to 1000 rpm, the pressure of argon gas to 0.15MPa, the flow rate to 13L / min, the aeration and stirring time to 10s, and a semi-solid slurry at a temperature of 610°C was obtained. Wherein, the diameter of the stirring rod is 53 mm, 4 ventilation holes are distributed on the bottom surface of the stirring rod, 8 ventilation holes are distributed on the circumferential surface 6 mm away from the bottom surface of the stirring rod, and the diameter of the ventilation holes is 1.2 mm.

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Abstract

The invention discloses a light alloy semisolid slurry preparation technique. In the technique process, treatment gas is pumped into slurry while stirring is conducted, preparation and refining of the semisolid slurry are achieved by controlling distribution of ventilation holes, stirring parameters and ventilation parameters, wherein the rotation speed of stirring equipment is controlled to be no less than 800 rpm, the hole diameter of the ventilation holes is no greater than 2 mm, and thus slurry hydrogen and oxide inclusions can be effectively removed. The invention further discloses a device suitable for the preparation technique. The device can achieve the effects that in the continuous slurry making and die casting processes, the production efficiency is high, industrial production demands are met, the prepared slurry is good in quality, die-cast products are compact and free of pore defect, T6 heat treatment can be conducted for improving the mechanical property, and the high stress requirement is met.

Description

technical field [0001] The invention relates to the field of semi-solid die-casting production, in particular to a preparation process and device for light alloy semi-solid slurry. Background technique [0002] Semi-solid forming technology is a cutting-edge metal processing technology in the 21st century and has developed rapidly in recent years. The semi-solid forming technology breaks the traditional dendrite solidification mode, makes the alloy structure uniform, reduces the internal defects of the casting, and improves the comprehensive performance of the casting. In the semi-solid rheological die-casting process, the quality of semi-solid slurry is the basis and key factor of semi-solid forming technology, which directly determines the quality and cost of semi-solid casting products, and is the key to semi-solid casting. [0003] At present, there are many preparation processes for semi-solid slurry, such as mechanical stirring method, electromagnetic stirring method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D1/00B22D17/00C22B9/05B22D43/00
CPCB22D1/002B22D1/005B22D17/007B22D43/004C22B9/05
Inventor 任怀德张莹王继成李谷南
Owner ZHUHAI RUNXINGTAI ELECTRICAL
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