CN2252658Y

CN2252658Y - Honeycomb ceramic cast iron filter

Info

Publication number: CN2252658Y
Application number: CN 95226135
Authority: CN
Inventors: 王建忠; 何韶龄
Original assignee: Xinhui Xincheng Industrial Ceramic Factory
Current assignee: Xinhui Xincheng Industrial Ceramic Factory
Priority date: 1995-10-18
Filing date: 1995-10-18
Publication date: 1997-04-23
Anticipated expiration: 2005-10-18

Abstract

The utility model relates to a honeycomb ceramic cast iron filter. A basal body is made of the mixed materials of mullite and cordierite. Overcurrent through holes which are arranged on the basal body are square holes. The side length of each square hole ranges from two mm to three mm. Wall thickness among each square hole ranges from 0.3 mm to 0.6 mm. Because of the adoption of a thin wall square through hole structure and a reasonable dimension design, the utility model has the advantages of high filtering exhaust rate and good effect. Simultaneously, the opening area of a facade is large, so compared with the original effective filtering area, the effective filtering area is improved for more than 30 percents. Casting flow rate is large, and vortex flow and sand corrosion can be reduced, which leads molten iron to be injected in the balanced and uniform way. The purity and the quality of cast iron can be effectively improved.

Description

Ceramic honey comb cast iron filter

The utility model relates to the filter that is used for filtering molten iron impurity in a kind of casting technique, particularly a kind of ceramic honeycomb filter.

A kind of " ingot mould of band filter " disclosed in No. 93222822.4 patent application documents of Chinese patent, this ingot mould with filter make with porous ceramic film material, filtering through hole is the circular port of 3～5mm, this kind filter through-hole aperture is bigger, and filter effect is relatively poor, and the front openings area is little, effective filtration area is little, filtration resistance is big, and easily blockage phenomenon influences casting quality.

The purpose of this utility model is to provide a kind of good filtration effect, ceramic honey comb cast iron filter that effective filtration area is big.

The utility model as shown in Figure 1, matrix is made with mullite and cordierite composite material, the opening of opening is square hole (1), the square hole length of side is 2～3mm, wall thickness is 0.3～0.6mm between the square hole.

Above-mentioned square hole (1) length of side is a preferred range with 2.3～2.6mm, and the best is 2.4mm; Wall thickness between the above-mentioned square hole (1) is a preferred range with 0.35～0.5mm, and optimum value is 0.4mm.

The utility model is owing to adopt thin-walled square through hole structure and the reasonable size design, impurity leaching out rate height, effective, it can not only the filtering slag and other nonmetal impurities, and can also filter and adsorb the fine impurities of dispersion, eliminate spheroidal graphite cast-iron because of nodularization, breed, secondary slag inclusion that slag inclusion of molten iron oxidation reaction and cast are difficult to eliminate in filtering, thereby purifying molten iron effectively.Simultaneously, its front openings area is big, and more than 30%, it is big to pour into a mould flow than original raising for effective filtration area, and can reduce eddy current and husky erosion, makes molten iron inject balance, even, can effectively improve the purity and the quality of foundry goods.

Fig. 1 is the utility model structural representation;

Embodiment: this is for example shown in Figure 1, and the matrix adopting mullite is a major ingredient, and cordierite is an auxiliary material, and adding a certain amount of binding agent is basic components, by moulding, drying, master operation such as burn till and process.Its external dimensions length * wide * height is 250mm * 150mm * 25mm, and square hole (1) length of side a is 2.6mm, and wall thickness b is 0.4mm between each hole, and the front openings area is about 70%.This example is suitable for the spheroidal graphite cast-iron casting process, and cast iron impurity is reduced to below 1%, and the purity and the quality of foundry goods improve greatly.

Claims

1, ceramic honey comb cast iron filter is characterized in that the opening of opening is square hole (1), and the square hole length of side is 2～3mm, and wall thickness is 0.3～0.6mm between the square hole.

2, cast iron filter according to claim 1 is characterized in that above-mentioned square hole (1) length of side is a preferred range with 2.3～2.6mm, and the best is 2.4mm.

3, cast iron filter according to claim 1 and 2 is characterized in that the wall thickness between the above-mentioned square hole (1) is a preferred range with 0.35～0.5mm, and optimum value is 0.4mm.