Molten metal filtering device

A filtration device and technology for molten metal, applied in filtration separation, metal processing equipment, separation methods, etc., to achieve the effect of avoiding filter breakage and good filtration effect

Inactive Publication Date: 2014-11-05
JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of filtering large iron castings and steel castings, and provide

Method used

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  • Molten metal filtering device

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Use 20% of alumina, 30% of bauxite, 40% of burnt gemstone and 10% of clay as raw materials, add 3 times of water, mix evenly by ball milling for 1 hour, use grouting molding, inject ceramic slurry into the prefabricated mold, and filter in the mold The size of the support part of the device is 200*600, the liquid inlet and outlet chambers are formed separately, dried at 60°C for 3 hours, and fired at 1300°C for 3 hours; then put three pieces of 200*200*30*(10ppi) zirconia Into the support part, combined into a filter device, the test proved that the filter device can filter 4t molten steel or 8t molten iron.

Embodiment 2

[0048] Use an intermittent high-speed sand mixer, add 88% quartz sand (70 / 140 mesh in particle size) and 12% water glass into the sand mixer, mix for 280s, and produce sand; adjust the sand shooting pressure of the sand shooting machine to 0.3MPa, and the sand shooting time 3s; blowing carbon dioxide after sand shooting, blowing pressure 0.2MPa, blowing time 2s; demoulding after blowing.

[0049] Make a filter device with a filter support surface of 900*150 according to the above process, place 6 pieces of carbon filters 150*150*30 (10ppi), a single filter device can filter 4t stainless steel, gray iron 8t, combined use can double the increase filtering ability.

Embodiment 3

[0051] The coated sand with a particle size of 70 / 140 mesh is used, and the equipment is a coated sand blasting machine. The heating temperature is 200°C, the curing time is 150s, the sanding pressure is 0.3MPa, the sanding time is 5s, and the shelling time is 50s before demoulding. Make a filter device with a support surface of 200*600, place 3 zirconium filters 200*200*30 (10ppi), a single filter device can filter 2 tons of stainless steel, and 4 tons of ductile iron, and the combined use can increase the filtering capacity doubled.

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Abstract

The invention relates to a molten metal filtering device. The molten metal filtering device comprises a liquid inlet bin, a liquid outlet bin and multiple filters, wherein the liquid inlet bin is located on the upper portion of the filtering device and provided with a liquid inlet, and the liquid inlet is formed in the wall of the liquid inlet bin; the liquid outlet bin is located on the lower portion of the filtering device and provided with a liquid outlet; the multiple filters are arranged between the liquid inlet bin and the liquid outlet bin in parallel. The molten metal filtering device is suitable for casting of heavy castings and easy to manufacture.

Description

technical field [0001] The invention relates to a molten metal filtering device used in the foundry industry, in particular to a novel combined filtering device. Background technique [0002] Ceramic foam filter is a new type of filter developed in the past 20 to 30 years. Through the ceramic filter, it can effectively remove or reduce the inclusions in the molten metal, improve the purity of the molten metal, and make the cast metal The surface of the casting is smooth, the structure is uniform, the strength is improved, the scrap rate is reduced, and the machining loss is further reduced, and the labor productivity is improved. This type of product is mainly used for metal casting filtration in the foundry industry, and is suitable for casting of cast steel, cast iron, cast aluminum, alloy, non-ferrous metal castings and large castings. [0003] At present, the use of filters has become more common, and they are usually placed at the bottom of the sprue cup or sprue, or p...

Claims

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Application Information

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IPC IPC(8): B22D43/00B01D35/02
Inventor 祝建勋杨淑金刘敬浩
Owner JINAN SHENGQUAN DOUBLE SURPLUS CERAMIC FILTER
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