Liquid level online real-time monitoring system for quantitative casting of magnesium alloy

A real-time monitoring system, magnesium alloy technology, applied to the equipment for supplying molten metal, the configuration of indicating equipment/measuring equipment, casting equipment, etc., can solve the problems of inaccurate quantitative casting, inaccurate liquid level monitoring data, etc., and achieve product quality Reliable quality, high reliability, and the effect of reducing production costs

Pending Publication Date: 2020-06-09
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an online real-time monitoring system for liquid level in quantitative casting of magnesium alloys, so as to solve the problem of inaccurate liquid level monitoring data during quantitative casting of magnesium alloys in the prior art, resulting in quantitative casting inaccurate question

Method used

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  • Liquid level online real-time monitoring system for quantitative casting of magnesium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A magnesium alloy melting furnace is selected as a melting furnace with a diameter of 1.5 m and a height of 1 m. The liquid inlet of the melt pump is fixed at a vertical distance of 20mm from the bottom of the furnace. During the smelting and casting process of the molten magnesium, the height of the molten magnesium is always controlled at 35-75mm. The protective gas is argon.

[0030] Input the volume of magnesium melt that needs to be poured into the control system as 0.22m 3 , the height of the liquid level before casting is 0.701m, and the PLC control system selects the appropriate melt pump rotor speed of 35Hz and rotation time of 9.7s according to the measured liquid level. The theoretical drop height should be 0.125m, the actual drop height is 0.125m, and the error is almost 0.

example 2

[0031] Example 2: The magnesium alloy melting furnace is selected as a melting furnace with a diameter of 1.5m and a height of 1m. The liquid inlet of the melt pump is fixed at a vertical distance of 20mm from the bottom of the furnace. During the smelting and casting process of the molten magnesium, the height of the molten magnesium is always controlled at 35-75mm. The protective gas is argon.

[0032] Input the volume of magnesium melt that needs to be poured into the control system as 0.22m 3 , the height of the liquid level before casting is 0.576m, and the PLC control system selects the appropriate melt pump rotor speed of 35Hz and rotation time of 11.2s according to the measured liquid level. The theoretical drop height should be 0.125m, the actual drop height is 0.126m, and the error is 0.8%.

example 3

[0033] Example 3: The magnesium alloy melting furnace is selected as a melting furnace with a diameter of 1.5m and a height of 1m. The liquid inlet of the melt pump is fixed at a vertical distance of 20mm from the bottom of the furnace. During the smelting and casting process of the molten magnesium, the height of the molten magnesium is always controlled at 35-75mm. The protective gas is argon.

[0034] Input the volume of magnesium melt that needs to be poured into the control system as 0.22m 3, the height of the liquid level before casting is 0.451m, and the PLC control system selects the appropriate melt pump rotor speed of 35Hz and rotation time of 13s according to the measured liquid level. The theoretical drop height should be 0.125m, the actual drop height is 0.125m, and the error is almost 0.

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Abstract

The invention discloses a liquid level online real-time monitoring system for quantitative casting of a magnesium alloy. The liquid level online real-time monitoring system comprises a PLC control system and an infrared position detecting instrument. The infrared position detecting instrument is arranged over a smelting furnace and is used for collecting liquid level height data of the smelting liquid in the smelting furnace and sending collected data to a PLC control system. The PLC control system controls the rotating speed and time of a melt pump according to a preset volume of casting meltand a signal fed back by the infrared position detecting instrument to control the casting amount of magnesium liquid. Infrared rays with relatively strong penetrability are adopted to penetrate through smoke dust so as to monitor the liquid level height of a magnesium solution in real time. Moreover, the liquid level online real-time monitoring system has the characteristics of quick data acquisition, high precision and the like, so that the product quality of a magnesium alloy casting is more reliable, and the magnesium liquid is also saved.

Description

technical field [0001] The invention relates to the technical field of magnesium alloy casting, in particular to an online real-time liquid level monitoring system for quantitative casting of magnesium alloys. Background technique [0002] Magnesium alloy is currently the lightest commercial metal structure material, with low density, high specific strength and rigidity, good damping and vibration reduction and electromagnetic shielding, excellent liquid forming and machining process performance, easy to reproduce and utilize, and has abundant resource support, etc. With a series of advantages, it is considered to be one of the most imaginative and promising lightweight materials at present. [0003] Magnesium alloys have poor plasticity at room temperature, and casting is often used in engineering. At present, more than 90% of magnesium alloy parts are castings. Casting production inevitably requires melt preparation and quantitative supply; in addition, the production of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D39/00B22D2/00
CPCB22D2/003B22D39/02
Inventor 游国强杨梦懿彭力真龙思远
Owner CHONGQING UNIV
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