Processing method for inblock cast aluminum alloy

Abstract

The invention discloses a processing method for inblock cast aluminum alloy. The processing method comprises the following steps: S01, weighing raw materials; S02: selecting pure Al, Al-Si intermediate alloy, Al-Cu intermediate alloy, Al-Mn intermediate alloy, Al-Ti intermediate alloy, Al-Ni intermediate alloy, Al-Mg intermediate alloy, Al-Zr-Re intermediate alloy and nanometer TiC powder as raw materials for smelting; S03: maintaining homogeneous alloy melt obtained in the step S02 at a temperature of 710-720 DEG C for 1-2 h, then carrying out natural cooling to 680-700 DEG C, and then carrying out impurity removal; and S04: after completion of impurity removal, filtering molten liquid by using a ceramic filter with filtration pore size of 10-20 ppi, and applying molten liquid obtained after filtration to aluminum alloy casting. An aluminum alloy material prepared by using the processing method for inblock cast aluminum alloy in the invention has good formability and good thermal conductivity, hardly produces scales and impurities in the process of casting, and can be perfectly adhered to a steel part; and an electric heating plate prepared from the material has no gap after completion of casting, so defects in the prior art are overcome.

Description

technical field [0001] The invention belongs to the field of processing aluminum alloy materials, and in particular relates to a processing method for integrally cast aluminum alloys. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. It has the advantages of low density, high strength ratio, good plasticity, good electrical conductivity, and good corrosion resistance, and is suitable for processing into various profiles. It is precisely because of its high thermal conductivity that it has great use value in heating and cooling. Therefore, heaters and coolers used in many industries are made of aluminum alloy, such as heaters in the semiconductor industry, Car radiators, computer fans and electric heating plates for various purposes, etc. [0003] With the development needs of all walks of life, the requirements for aluminum parts are getting higher and higher. For example, aluminum electric heating p...

AI Technical Summary

Problems solved by technology

In the actual processing process, although the integral casting process can bring a certain degree of improvement to the structure and processing technology of the electric heating plate, the problems of aluminum alloy uniformity and pore defects are particularly prominent in the integral casting process. The reason is that although the processing technology has been improved, the integral casting process requires higher casting quality, otherwise the uniformity of the electric heating plate cannot meet the requirements. At the same time, in the integral casting process, the galvanic couple is directly cast In the casting, the contact surface between the aluminum alloy raw material and the galvanic couple should be seamless, without any impurities, dirt and other defects, otherwise there will be the same gap problem as the traditional processing method

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