• High silica fiberglass mesh for steel castings System 1
High silica fiberglass mesh for steel castings

High silica fiberglass mesh for steel castings

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high silica mesh casting filter can effectively remove slag,refractory particles and non-metallic inclusions from molten metals.It is developed as a low cost but with rather filtration efficiency alternative to ceramic filters.
Made from specially treated silica yarns,silica mesh filters are capable of withstanding pouring temperatures up to 1620 Degree C.
Silica mesh filters are ideal for in-mold filtration of gray, malleable,white,compacted graphite and ductile cast irons, as well as non-ferrous aluminum and copper-based metal alloys and many types of small scale steel casting filtration.

ADVANTAGES:

• Low cost and easy to use

• Improves fluidity and metal distribution

• Removes micron sized inclusions and impurities

• Can be used with existing pattern equipment

• Eliminates inclusions created by ceramic chips

APPLICATIONS:

• Cut pieces for in mold filtration like sand casting,gravity casting,etc.

• Cut pieces for riser sleeves,bottom or across ports in walls

• Cut pieces to provide a weakened plane for riser knock-off

• Cup shapes for investment casting


SPECIFICATION:

Model No.

SiO2%

Thickness

Mesh size

Max.Temp.

Open area

Max.work time

HSFG-15

≥96

0.35mm

1.5x1.5mm

1450℃

55%

10minutes

HSFG-20

≥96

0.35mm

2.0x2.0mm

1450℃

60%

10minutes

HSFG-25

≥96

0.35mm

2.5x2.5mm

1450℃

70%

10minutes

HSFG-S15

≥96

0.98mm

1.5x1.5mm

1620℃

22%

15seconds

HSFG-S20

≥96

0.98mm

2.0x2.0mm

1620℃

26%

15seconds

HSFG-S25

≥96

0.98mm

2.5x2.5mm

1620℃

32%

15seconds

FILTERING TIPS:

• Copper alloys&leaded bronze:1.5x1.5mm mesh

• Gray Iron:1.5x1.5mm mesh

• Ductile Iron:2.0x2.0mm &2.5x2.5mm mesh

• Small scale steel:1.5x1.5mm mesh

*Cut pieces can be rectangular or round,size from 20mm to 900mm.

*Preformed cup filter OD can be 100/110/115/120mm or as per request.


Q:What are the causes of the powder moisture in the ceramic filter?
Generally, the ceramic filter is used to filter iron powder, and the water content of the filter cake is about 10%.
Q:What's the acid of the ceramic filter plate?
General ceramic filter running for eight hours or so, you need to stop for joint cleaning, general cleaning at an hour or so. When washing together, there is acid washing, usually concentrated nitric acid. The purpose is to dissolve the pores in the ceramic filter plate through nitric acid.
Q:The vacuum of ceramic filter is not enough
The vacuum degree of ceramic filter is about -0.08MPa, if the ceramic filter is less than 0.06MPa, the vacuum is not enough. If the vacuum of ceramic filter is not enough, it will influence the suction effect of ceramic filter (mainly the thickness of filter cake and water content of filter cake).
Q:Can the ceramic plate filter the hot air?
Ceramic filter by vacuum suction effect in the ceramic filter plate to cake drying purpose, ceramic filter plate needs cleaning and life, if you discover that the slurry sucking effect is poor or even grout should first consider the three aspects: the two factors of ceramic filtering plate of ceramic filter plate most likely, are fracture and hole plugging: rupture will lead to distortion and poor vacuum cleaning; plugging holes will cause the filter plate suction effect is poor even if grout, ceramic filter plugging hole, can strengthen the appropriate cleaning (such as shortening cleaning cycle, prolong the cleaning time, increase the amount of nitric acid, such as strengthening cleaning etc.) after the effect is still not improved, you should consider the life is approaching should be scrapped and replaced with ceramic filter plate new (replacement plate should not put new or different manufacturers is mounted on the same line, the most OK, complete replacement.).
Q:What are the poor filtration effects of vacuum disc filters?
The spindle speed is slow, the formation time of growth in the area of vacuum filter cake, production capacity increased gradually, but because the unit time of grout thickness and spindle speed slow is proportional to, so the ceramic filter capacity in a range of showing the highest.On the other hand, as the spindle speed slows down, the thickness of the slurry is thickened, and the moisture of the concentrate is also affected. For viscous material, ceramic filter with ceramic plate to work as filter media, when the cake is formed gradually into the porous filter medium filter cake itself, and the cake is not easy to form a viscous material, forming a dry cake appearance does not slow, the spindle speed is easy to reduce the water content of concentrate. Similarly, the spindle speed is accelerated, the cake formation time in the vacuum zone is shortened, and the slurry thickness is reduced, and the material can be improved for the easy molding material. But the spindle speed is too fast to be cleaned after each cycle of the ceramic plate. As for the viscous material, the cake is difficult to form after the spindle speed increases, and it will affect the capacity. Therefore, the use of ceramic filter should focus on the inherent nature of the concentrate to explore the best spindle speed.
Q:Can the plate filter press pass through the filter plate?
There are many types of pumps to be used, such as screw pumps, slag pumps, rotary pumps, piston pumps, and diaphragm pumps.
Q:The ceramic filter suddenly did not smoke, and later he was all right. What's the reason?
Ceramic filter is mainly ceramic filter plate and vacuum system, ceramic filter plate is mainly product size of ceramic plate is a new, different manufacturers of different sizes; the vacuum system can be gradually investigation vacuum components and pipelines.The ore concentration, fineness and the concentration distribution in the slurry tank are different.A ceramic filter is composed of a plurality of system, more prone to such an unknown problem, fortunately: good!
Q:What are the materials that make up the ceramic mold?
At present, the commercialized porous ceramic membranes are mainly composed of 3 types: flat plate, tubular and multi channel. Flat film is mainly used for small-scale industrial production and laboratory research. The tubular membrane is combined with rice to form a heat exchanger similar to a column tube heat exchanger, which can increase the loading capacity of the membrane, but is gradually withdrawn from industrial application due to its strength problem. The size of the applied ceramic membrane usually adopts a multi channel configuration, that is, a plurality of channels are distributed on a circular cross-section, and the number of general channels is 7, 19 and 37. The main business of the inorganic ceramic membrane preparation technology: using solid particle sintering preparation carrier and microfiltration membrane by sol-gel method in the preparation of ultrafiltration membrane: glass membrane by phase separation method: using special technology (such as chemical vapor deposition, electroless plating, etc.) the preparation of microporous membrane or dense membrane. Its basic theory involves colloid and surface chemistry, material chemistry, solid state ion science, material processing and so on.
Q:How should the static and dynamic sealing points of the ceramic filter be leaking?
The filtrate pump works to drain or recycle the water that has been pumped out. 6 、 cleaning system work, cleaning system includes backwashing (water pump pressure or height difference pressure), acid liquid (metering pump, automatic acid injection), ultrasonic (ultrasonic work), etc.. 7 、 control system and other electrical systems. In addition, the filter cake which is absorbed and dried on the ceramic filter plate is unloaded automatically by the scraper and then falls on the belt conveyor, and is conveyed to the concentrate storage yard by a belt conveyor.
Q:What are the reasons for the program alarm of ceramic filter?
If that is the ceramic filter tank body of the slurry concentration is diluted, has nothing to do with the ceramic filter itself, can think of ways to enter the ceramic filter tank before the slurry concentration increased, thereby improving the dewatering efficiency of ceramic filter.

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