Gas atmosphere shielding device of smelting and pouring magnesium alloy

Abstract

The invention relates to a protective atmosphere device for melting and pouring a magnesium alloy, which comprises a pipeline, a gas cylinder connected with a plurality of paths of gas inlets, a mixer, and a mixed gas outlet. The device is characterized in that an inlet gas pressure detecting and regulating device and an inlet gas flow detecting and regulating device are arranged between each path of the gas inlet and the inlet of the mixer, and an outlet gas pressure detecting and regulating device and an outlet gas flow detecting and regulating device are arranged between the outlet of the mixer and the mixed gas outlet. The protective atmosphere device for melting and pouring the magnesium alloys mixes gases in a pure mechanical mode, adopts the plurality of the paths to introduce the gases, adopts gas inlet passages with different flow rates, can regulate the pressure and the flow rate according to different requirements, and can mix two or three gases, thus the device is applicable to industrial application and experiment research and development. The device has the characteristics of precisely-proportioned mixing, simple operation, and low cost.

Description

technical field [0001] The invention relates to equipment in the field of alloy processing, in particular to a protective atmosphere device for melting and pouring magnesium alloys. Background technique [0002] The surface of magnesium and magnesium alloys is easily oxidized and burned during smelting and pouring, so special protection measures are required. Chinese Patent No. 03239990.1 proposes "an online mixed gas supply equipment for magnesium alloy smelting protection", and the mixed gas used in the equipment is SF 6 and N 2 , the mass flow detection controller, the pressure sensor and the pressure regulating valve are all connected to the computer monitoring system through the data signal line, and adopt automatic control. This equipment is suitable for the production and processing of magnesium alloys in large quantities, but its use cost is relatively high. And the use of a single gas is not suitable for the production and processing of small batches of magnesium ...

AI Technical Summary

Problems solved by technology

Chinese Patent No. 03239990.1 proposes "an online mixed gas supply equipment for magnesium alloy smelting protection", and the mixed gas used in the equipment is SF 6 and N 2 , the mass flow detection controller, the pressure sensor and the pressure regulating valve are all connected to the computer monitoring system through the data signal line, and adopt automatic control. This equipment is suitable for the production and processing of magnesium alloys in large quantities, but its use cost is relatively high. And the use of a single gas is not suitable for the production and processing of small batches of magnesium alloys; Chinese Patent No. 03206407.1 proposes "a synthesis device for magnesium alloy smelting protective gas", and the gas used in the equipment is SF 6 and N 2 , the air supply device is powered by a mechanical pump

This device uses the pressure value to calculate the ratio, and cannot visually detect the flow rate of the mixed gas. It does not have the operability of real-time adjustment, and the working conditions are limited.

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