SU678078A2 - Multilayer filter of granulated material for refining aluminium alloys - Google Patents

Description

The daily rate of the mm mm converter pad, and the calcium oxide layer is 50–7O mm. The composition of the converter spats is not regulated. Calcium oxide should be only lumpy, do not allow the presence of the culot. The described filter is used as follows. The finished multi-layer filter is heated to the temperature of the melt to be processed by known methods, nagfymer electrical current Through the heated filter is passed. Continuous popgoca melt of an alloy with a rate of 9.7–9.8 kg / cm. At VTOM, alloy impurities interact with active components of filter materials, as a result of which the quality of the treated alloy is improved. The deterioration of the filtering activity of the filter is determined by rapid analyzes of (} zhtrovakrrgo. Alloy. With a noticeable deterioration in the filter kmcx properties, the filir is removed from the filtering unit. The most respectful / reverent is the transmission of a stream of liquid alloy in the ascending flow

678078 ke. The advantages of the proposed filter are illustrated by examples of its implementation and application. Example 1. A phyla-p consisting of the following layers was placed in the refining block: upper and lower layers 6Q mm thick each of the converter slag pieces 15-20 mm in size intermediate junction above the bottom layer 6 O mm thick of paawepdM converter pieces 5.12 mm and a layer of lime soaked in potassium fluoride; potassium 60 mm thick from pieces 5-20 mm in size. A molten aluminum alloy containing 6.8% silicon, 0.5% s magnesium, 0.6% manganese, 1.0% iron, 1.4% copper, 0.5% zinc, and-0.3% nickel, was continuously missed through filto. pre-heated at 73 ° C (alloy melt temperature) at a rate of 9.8 kg. From the filtered material, samples were taken to determine the mechanical properties, the data on which are placed in a table.

Tensile strength

Alloys

C -njimtbTpoBaHHbje via fip1lgr By aut. swith Mb 489797

Filtered through the filter in example No. 1

EXAMPLE 2 Calcium oxide was used under the conditions of Example 1; do not dispense Syjo potassium fluorocyanmate. When the metal was transmitted, a mass was formed of a porridge-like mass with an extremely low melt permeability. The fusion of a melt of the alloy turned out to be NevjVkshs;

The tests of the filter showed that the alloys, which were adjusted through the proposed filter, made alloys that were allotted to them. through the filter by bus. St. No. 489797,

Otkosvvtvoe kgf / mm elongation,%

2.5

22.6 24.8 4.8

Claims (1)

By 10% strength, and by relative elongation 1.9.2 times. The formula of the invention .a Multi-layer filter made of granular material; for the refining of aluminum in alloys of P9 ABTc. No. 4iSeiY97, about 10 and 10, and with the fact that, for the purpose of turning the mechanical properties of the alloy, between the top and next Hotso Sla.ka converter is placed a layer of Kalibkishi impregnated with fluorocirconate into pieces of 5-20 mm .