Slurrying-forming separated aluminium alloy rheological forming method

A rheological forming and aluminum alloy technology, which is applied in the field of pulping-forming separate aluminum alloy rheological forming, can solve the problems of undisclosed technical details, and achieve the effects of improved production efficiency and strong process applicability

Inactive Publication Date: 2007-07-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

These two rheocasting technologies have high knowledge innovation and practical value, but due to reasons such as knowledge protection, their specific technical details are not disclosed (Haga T, Kapranos P. Simple rheocasting processes. Journal of Materials Processing Technology, 2002 , 130-131: 594-598: Masashi Uchida. Feature of UBE squeeze process and UNRC process (semi solid casting). See: Li Ron

Method used

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  • Slurrying-forming separated aluminium alloy rheological forming method
  • Slurrying-forming separated aluminium alloy rheological forming method

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preparation example Construction

[0041] 1. Preparation of superheated liquid alloy

[0042] (1.1) Preparation of superheated melt. There are no special requirements on the equipment, and various heating methods in the prior art can be used, but it is necessary to ensure that the temperature of the melt is uniform, and the melt is pure and free from contamination.

[0043] (1.2) Melt treatment process. Carried out in a traditional air resistance holding furnace. First, it is required to select a suitable master alloy. Taking A356 alloy as an example, micron-sized Al-5Ti-B alloy powder should be used as the refiner, and extruded Al-10Sr binary alloy with a deformation of about 50% should be used as the modifier. Second, compared with the traditional bulk master alloy, the addition of master alloy powder is slightly more and the standing time is shorter. Thirdly, if the particle size of the master alloy powder is different, the adding temperature will be different, the finer the powder particles, the lower t...

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Abstract

The invention relates to a pulping-shaping detachable aluminum alloy rheologic shaping method, wherein it also provides a quick prepare system of semi-solid alloy pulp. Said method comprises that: preparing heated liquid alloy; preheating mixing pot to 350-400Deg. C; filling heated flux into said semi-solid alloy pulp mixing pot; putting pot into electromagnetic mixer prepare room; starting the mixer to electromagnetically mix; when the mixing is end, taking out the pot, pouring the alloy pulp into the injection cylinder of casting machine; injecting and shaping at 220Deg. C of mould. In said invention, the mixer and shaping device are separated. And it has high efficiency.

Description

technical field [0001] The invention relates to a rheological forming method of an aluminum alloy separated from a rapid preparation system of a semi-solid alloy slurry and a workpiece forming system, and belongs to the technical field of semi-solid alloy forming methods. Background technique [0002] Semi-solid alloy forming technology is usually divided into rheological forming and thixoforming two categories. Due to the application process of semi-solid thixotropic forming technology, it is exposed that the process flow is long, the billet cost is high (the billet cost accounts for about 40% of the part cost), the energy consumption of remelting is high, the billet surface is severely oxidized, and the billet loss is serious during the heating process. (loss as high as 10%), production waste cannot be recycled at the production site and many other problems. Since the 1990s, rheological forming technology has gradually become the key development direction of semi-solid for...

Claims

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Application Information

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IPC IPC(8): B22D17/00B22D27/20
Inventor 唐靖林冯鹏发曾大本
Owner TSINGHUA UNIV
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