What is Fiberglass Shunt Combo Bag?

Fiberglass Filtration & Shunt Combo bag is weaved by fiberglass yarn, coated with special resin and produced through special process, its withstand temperature up to 1000 °C.

There are three colors, white, brown and deep brown. Usually, the Brown and deep brown types are the best choice for motel aluminium liquid filtration.

What is the application?

It is used to filter and evenly distribute molten aluminum in molds.

Fiberglass Filtration Shunt Combo Bag is used in sand casting, permanent mold, shell mold, draw mold and investment casting, which can remove impurities, reduce turbulence, eliminate air bubbles, thereby improve casting quality and reduce production costs.

● Helps to reduce the turbulence of metal flow and improve the temperature distribution throughout the mold volume.

● Filter the molten metal and decrease in non-metallic inclusions and oxide films in the liquid metal.

● Improve mechanical quality of aluminum casting product.

● Improve the hardness of aluminum casting product with more average surface hard and bending strength.

What are the features?

Comparing to other filter bags, it does not affect the component of aluminum alloy, and with good filtration effect, high temperature resistance, high strength, excellent acid and alkali resistance, non-stick aluminum, non-slagging, non-peeling, as well as easy installation.

● New environmental protection material, does not burn during whole use process , no harm to human body.

● Advanced production equipment, warp and weft standard for base cloth, high temperature resistant coating mesh uniform, the finished product is exquisitely made without burrs.

● Both sides of the bag adopt square hole fixing device technology, more convenient operation and improve the working rate.

What is the Benefit?

● Does not pollute the liquid aluminum, does not affect the chemical properties of the metal, and the aluminium liquid can be directly remelt, thus the cost can be reduced greatly. 

● The bag can withstand the liquid temperature of 700℃, it can be used continuously for 4 hours when the flow is not more than 10 kg/min, for 1.5 hours continuously when not more than 120 kg/min. 

● It can ensure the removal of oxides or other debris suspended in the volume, remove the harmful impurities such as bubbles, ash oxides, and various inclusions in aluminum molten liquid, greatly improve the yield of aluminum castings, improve the quality of aluminum products, and avoid the problem of other metal components into aluminum solution, does not affect the composition of aluminum alloy, to ensure the quality of aluminum castings.

● It is the ideal filtration material in the process of aluminum metal smelting. 

● This bag can also improve the mechanical properties of aluminum castings, can increase the hardness of the castings, and the surface hardness is uniform and improve the bending strength of the castings. In this way, the manufacturer can produce terminal products with assured quality. 

● Compared with other kinds of filters, Fiberglass Filtration Shunt Combo Bag has the advantages of low price, convenient use, no change of metal composition, good filter slag and low gas output. Shunt bags can withstand higher temperature and more suitable for high temperature precision casting production.

What are the use principles?

● The closer the placement position is to the casting cavity, the better effect is, the better reducing the probability of secondary oxidation. The location where the casting filter is usually placed in the gating system: the lower end of sprue, the runner, the inner runner, and the sprue cup.

● The design of the gating system should be simple, and other slag blocking measures may not be considered, which can improve the utilization rate of the sand mold and the yield of the process.

● The aluminium pouring speed cannot be controlled with an fiberglass filter bag.

● The working area of fiberglass filter diversion bag should be 4 times to 6 times to the blocking section of the pouring system to ensure that the pouring speed is not affected.

● Select the corresponding filtration products according to the type of casting alloy and pouring temperature, and it should not be used at excessive temperature.

● Select the filter screen with the appropriate aperture to truly achieve the filtering effect.

Technical Data Sheet