Foundry Chemicals

FLUXAL - For refining Molten Aluminum Alloys

Aluminium and its alloys readily oxidise on melting and dissolve deleterious gases harmful admixtures. For these alloys, an increased gas content is harmful since gas fosters porosity and thus causing general unsoundness of castings.

Fluxal forms a protective cover during melting, thus preventing the metal from harmful gases. It also helps in removing harmful admixtures, dissolves oxide and gives metal free dross.

Packaging

Fluxal Powder are in 50 Kgs. Hessian polylined bags.

RANGE OF FLUXAL

a) Covering and Drossing fluxes

These fluxes form a protective crust, which acts as a cover during melting , prevent oxidation loss of metal ,dissolve oxides, remove dirt and give metal free dross.

Grade	Appearance	Nature of Dross	Type of Alloy	Qty. %	Remarks
FX11	Pink Powder	Dry	General Purpose used for all Aluminium alloys. Acceptable for alloys upto 1% Mg	1 to 1.50	Excellent heat evolution and good solvent power for oxides.
FX5	White Powder	Dry	General Purpose used for all Aluminium alloys. Acceptable for alloys upto 1% Mg	1 to 1.50	Same as fluxal Fx11 but reacts at lower temp.
1E	Pink	Dry	General Purpose used for all Aluminium alloys. Acceptable for alloys upto 1% Mg	1 to 1.50	Cheaper version of Fx11
FX66	Yellow	Dry	Aluminium alloys with 1 to 10% Mg. and AL-Si alloys	2.50 to 3	Reaction is slow compared to 201 acceptable upto 2% Mg. alloys
FX200	Violet	Dry	General purpose Acceptable for alloys up to 1% Mg	2 to 2.50	Quantity to be used will depend upon the Mg. alloys

b) Covering Fluxes

These fluxes serve only as protective cover during melting to prevent metal loss by oxidation. These fluxes being sodium free, are used for alloys containing 2 to 11% magnesium.

Grade	Appearance	Nature of Dross	Type of Alloy	Qty. %	Remarks
FX65	White	Liquid	Aluminium Alloys with 2 to 5% Mg.	1.50 to 3	It is sodium free flux
FX34	Yellow	Liquid	Aluminium alloys with 5-11% Mg.	3 to 4	It is sodium free flux

c) Recovery Fluxes

These fluxes exhibit efficient exothermicity which aid in recovering maximum metal from hot dross. Hot dross from the furnace and fluxal in sandwich pattern are put in a perforated crucible an stirred frequently. Intense heat is evolved which serves as additional heat required to melt aluminium beads in the dross. The metal is collected in the mold below the perforated crucible.

Grade	Appearance	Reaction Temp	Remarks
FX56	White	6250C to 6450C	Recovering Aluminium from hot dross
DR5	White	6100C to 6350C	Recovering Aluminium from hot dross
FX57	Yellow	6000C	For melting turnings, small particulate, low m.p.of flux prevents loss of metal

d) Modifying Fluxes

Modification is the term given to the process of adding and controlling the amount of sodium in high silicon aluminium alloys to obtain superior mechanical properties, mechineability and polishing characteristics.

Grade	Appearance	Nature of Dross	Qty. %	Remarks
FX36	Blue	Liquid	2.50 to 3	Reacts at temp 7500C
FX38	White	Liquid	2.50 to 3	Reacts at temp 7200C

E) Furnace cleaning Flux

The aluminothermic reaction (Reducing & heat producing reaction) of this flux when applied to hot furnace walls with heavy oxide built up, softens the oxide layer that can be scraped easily with a suitable tool.

Grade	Appearance	Qty %	Remarks
FX880	White	Depends on oxide built-up	Removes oxide form the furnace walls thereby retaining its capacity. Dose not harm refractory linings. Best suited for rotary furnaces.