Amorphous alloy pressure casting forming method

Abstract

The invention relates to the technical field of amorphous alloys, in particular to an amorphous alloy pressure casting forming method. The method comprises the steps that metal raw materials are mixedaccording to the design proportion and alloyed, and an amorphous mother alloy is obtained and machined into the prefabricated size; the amorphous mother alloy is subjected to vacuum pressure casting;amorphous mother alloy raw materials are arranged in a crucible, the closed environment where the crucible, a feeding barrel and a die are located is subjected to vacuum pumping, the manner that theamorphous mother alloy in the crucible is heated and melted to the power failure temperature and then cooling is conducted is adopted, the infrared temperature measuring manner is adopted for accurately controlling the pouring temperature of alloy melt injected into the feeding barrel, the alloy melt is pressed and injected into the die, meanwhile, secondary vacuum pumping is conducted on the die,and an amorphous alloy is obtained. According to the amorphous alloy pressure casting forming method, through accurate control over the pouring temperature, constant-temperature control of the feeding barrel temperature and a forming method for secondary vacuum pumping during pressing injection, and the complete-mold-filling, crack-defect-free and high-strength amorphous alloy product is obtained.

Description

technical field [0001] The invention relates to the technical field of amorphous alloys, in particular to a die-casting forming method of amorphous alloys. Background technique [0002] The guidelines for the development of the new material industry clearly point out that amorphous alloys are a national development demand and an important direction for the development of new materials. Amorphous materials have special properties due to their unique atomic structure characteristics, such as: high strength, high specific strength, high elasticity, high dynamic fracture toughness, high wear resistance, high corrosion resistance, in terms of preparation and processing, Unlike traditional metal materials, there is no phase transition from liquid to solid, and it has the characteristics of continuous viscosity change, small solidification shrinkage, high surface finish and easy forming. It is very suitable for making complex and thin-walled parts by die-casting. Precise and compl...

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Problems solved by technology

However, in the current existing technology, due to the magnetic stirring effect generated by the induction heating method, the liquid level of the alloy melt fluctuates unevenly, resulting in the inability of the infrared thermometer to accurately measure the temperature of the alloy melt. On the one hand, the temperature is low and the viscosity of the alloy melt is relatively low. Large, poor fluidity, low filling ability, on the other hand, the temperature is high, the melt is easy to absorb oxygen, precipitates high melting point crystalline phase, and the strength of the alloy is reduced, both of which will affect the forming of amorphous alloys

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