Melting and casting method and casting device for titanium-based amorphous composite material

Abstract

The invention discloses a smelting and casting method and a casting device of a titanium-based amorphous composite material. The smelting and casting method has the advantages that the force effect in the electromagnetic induction principle is utilized, alloy in a crucible is suspended in the air for smelting, so that the pollution caused by contact with the crucible is avoided and the control for the alloy heating state is realized; when the smelting process is finished, a heating power supply is switched off, an electromagnetic valve for suction casting or spray casting is opened, so that the rapid mold-filling of alloy solution is realized; in the spray-casting process, the control to the spray-casting speed is realized by changing the level of the air pressure in a gas storage tank, and further the amorphous composite material with different microscopic structures is prepared by controlling the solidification process; the defects in the prior art are overcome, the large-size titanium-based amorphous composite material is obtained by integrating the prior art, the stable control of the process to the organization structure is realized by adjusting process parameters such as temperature, temperature holding time, circular heating times and casting speed, and an ideal optimized design structure is obtained.

Description

technical field [0001] The invention belongs to the technical field of preparation of amorphous composite materials, and in particular provides a melting and casting method for titanium-based amorphous composite materials and a special casting device thereof. Background technique [0002] Due to its special atomic structure of long-range disorder and short-range order, amorphous alloys exhibit more excellent properties than traditional crystalline alloys, such as high strength, high hardness, high corrosion resistance, excellent magnetic properties and certain temperature Superplasticity within the range, etc., has shown great application value in the fields of aerospace devices, precision machinery and information. However, due to the poor room temperature plasticity and small critical size of amorphous alloys, the wide application of amorphous alloys is greatly restricted. The titanium-based amorphous composite material obtained by the autogenous composite method has exce...

AI Technical Summary

Problems solved by technology

However, if this method is used to prepare large-scale titanium-based amorphous composite materials, there are still some unsolvable problems: firstly, the V-shaped quartz funnel where the alloy is placed will react strongly with titanium at high temperature. When the liquid is completely suspended, the composition will still be inaccurate due to the reaction; the second suspension coil has a limited suspension capacity, which limits the development of amorphous composite castings to large sizes; the third spray-casting sample There will be porosity problems, which will affect the performance of castings

However, there are certain problems with this method: firstly, it is difficult to measure the temperature by adopting the upper end suction casting mold, and the upper end suction casting mold blocks the best temperature measurement position, so it can only be realized by controlling the smelting voltage. level control, but a good correspondence cannot be established between the smelting voltage and the actual temperature of the melt; secondly, the upper-end suction casting needs to insert a long quartz tube into the melt, so this method cannot be applied to the Titanium-based amorphous composite material that reacts strongly with quartz; thirdly, heating the raw material directly in a water-cooled copper crucible will often cause the high-melting point substance to not completely melt and cause strong component segregation

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