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Double-station magnesium alloy sand type low-pressure casting automatic production process and device thereof

A technology of low-pressure casting and production equipment, applied in the field of magnesium-aluminum alloy low-pressure casting, which can solve the problems of high manufacturing cost, low degree of automation, easy oxidation and combustion, etc., and achieve the effect of solving low production efficiency, reducing equipment cost and improving productivity

Active Publication Date: 2020-07-24
国机铸锻机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the pressure casting method is magnesium alloy, which is the most commonly used method at present, but the investment in equipment and molds is large, and it is only suitable for mass production; although the differential pressure casting method can produce large magnesium alloy castings, the process is more complicated and the degree of automation is low. ; Although the electromagnetic pump casting method solves the problem that magnesium alloy liquid is easy to oxidize and burn, the application technology of electromagnetic pump is still immature, which restricts the application of this method, and at the same time, the manufacturing cost is relatively high

Method used

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  • Double-station magnesium alloy sand type low-pressure casting automatic production process and device thereof
  • Double-station magnesium alloy sand type low-pressure casting automatic production process and device thereof
  • Double-station magnesium alloy sand type low-pressure casting automatic production process and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] A double-station magnesium alloy sand mold low-pressure casting semi-automatic production process, comprising the following steps:

[0090] ①The preparation process of the first station: Add the magnesium alloy ingot into the heat preservation crucible furnace of the first station, heat and melt it into 1# magnesium alloy liquid, and perform PID temperature control on the temperature of the 1# magnesium alloy liquid during the melting process. After the temperature reaches 730±5°C, start the production process of the first station, specifically:

[0091] Pass the mixed gas into the holding crucible furnace of the first station from the liquid level pressurization system of the computer, so that the 1# magnesium alloy liquid in the crucible of the holding furnace of the first station is pressed into the sand mold through the rising pipe according to the set process curve In the cavity, make it rise liquid, fill, crystallize, pressurize, maintain pressure, release pressur...

Embodiment 2

[0101] The first station heat preservation crucible furnace and the second station heat preservation crucible furnace all have melting and heat preservation functions, and the process of first station preparation, first station production and second station preparation is the same as embodiment 1;

[0102] A double-station magnesium alloy sand mold low-pressure casting semi-automatic production process, including the following processes:

[0103] ① Start the preparation process of the first station and the production process of the first station in sequence, and carry out the preparation process of the second station while starting the production process of the first station;

[0104] ②The furnace control system is installed in the first station heat preservation crucible furnace, which has the function of automatic alarm for the lowest liquid level. Transfer the 2# heat preservation crucible filled with 2# magnesium alloy liquid in the second station to the heat preservation ...

Embodiment 3

[0108] Both the second station heat preservation crucible furnace and the first station heat preservation crucible furnace have melting and heat preservation functions, and the process of the second station preparation, the second station production and the first station preparation is the same as in embodiment 1;

[0109] A double-station magnesium alloy sand mold low-pressure casting semi-automatic production process, including the following processes:

[0110] ① Start the preparation process of the second station and the production process of the second station in sequence, and carry out the preparation process of the first station while starting the production process of the second station;

[0111] ②The furnace control system is installed in the heat-retaining crucible furnace of the second station, which has the function of automatic alarm and prompting of the lowest liquid level. Move the 1# insulated crucible filled with 1# magnesium alloy liquid in the first station t...

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PUM

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Abstract

The invention relates to a double-station magnesium alloy sand type low-pressure casting automatic production process and a device thereof. The device includes a first station for the production of small and medium-sized magnesium alloy castings mainly by mass production and a second station for the production of large magnesium alloy castings mainly by small batch production. The first station and the second station can be produced in cooperation with each other or independently, the mass production of the magnesium alloy castings can be met, and the requirements of multi-varieties and small-batch production can further be met.

Description

technical field [0001] The invention relates to the technical field of magnesium-aluminum alloy low-pressure casting, in particular to an automatic production process and a device for a double-station magnesium alloy sand mold low-pressure casting. Background technique [0002] Magnesium and its alloys are easily corroded in most environmental media. Cast magnesium alloys have the following characteristics: large crystallization temperature intervals, large volume shrinkage and linear shrinkage, eutectic amount, specific heat capacity, solidification latent heat, density and magnesium alloy liquid in the structure. The indenters are small, so the magnesium alloy liquid has low fluidity and low filling capacity, and the tendency of thermal cracking and shrinkage of castings during solidification is generally much greater than that of cast aluminum alloys. Magnesium alloy liquid will burn violently in the air, and the combustion rate can reach 75%. Therefore, complete safety m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/04
CPCB22D18/04
Inventor 李来升朱亮康敬乐孙玉霞赵林栋蔡少刚
Owner 国机铸锻机械有限公司