Aluminum, Copper & Zinc Flux is a functional auxiliary material formulated with inorganic salts, halides, oxides and other active components, mixed at high temperature and finished as granules, powder or pressed blocks for the smelting and processing of aluminum, copper and zinc base alloys. Nantong Angshen Metal Materials Co., Ltd. supplies this category as a China Flux for Aluminum Manufacturer, China Flux for Copper Manufacturer and China Flux for Zinc Manufacturer, with formulas targeted by metal type rather than a single general-purpose product, covering molten metal purification, dross removal, oxidation prevention, temperature preservation and wetting promotion across foundries, non-ferrous metal processing plants and die-casting enterprises.
What This Flux Category Solves in Non-Ferrous Smelting
Molten aluminum, copper and zinc alloys are prone to oxidation, high impurity content, heavy dross formation and poor casting or processing performance if left untreated. Flux for Aluminum, Copper and Zinc is the key material Nantong Angshen Metal Materials formulates to improve the purity of molten metal, optimize the smelting process and protect the quality of the resulting castings, extrusions and forgings. This is a distinct function from aluminum soldering flux used in joining processes; the line detailed below is built for melt-stage purification and dross control during smelting rather than for soldering aluminum joints, and the eight named products below are all formulated for aluminum alloy melt processes specifically.
Aluminum Dross Separating Drossing Flux
As a China Aluminum Dross Separating Drossing Flux Supplier, Nantong Angshen Metal Materials built this product for die-casting workshops and recycled aluminum processing facilities that need to pull oxide dross off the melt surface without losing metal in the process.
0.2 to 0.4%Addition rate of total melt weight
Above 700 CActivation temperature
1 / 2.5 / 5 kgBag sizes
Once molten aluminum stabilizes above 700 C, the flux is sprinkled over the floating dross layer, causing the typically viscous oxide dross to turn into loose, dry solid granules that separate naturally from the pure metal beneath, so a skimming tool clears the surface with far less entrained aluminum lost to the slag pile. The 1 kg bag suits small trial furnaces or manual dosing, the 2.5 kg bag fits medium furnace batches, and the 5 kg bag is sized for large-scale or automated feeding, which is how Nantong Angshen Metal Materials keeps one product usable from lab-scale trials through full production runs.
Refining and Degassing Flux Options
Three products in the range are built specifically for refining and degassing molten aluminum before it is poured, and Nantong Angshen Metal Materials differentiates them by sodium content, form and workshop environment rather than offering a single catch-all refiner.
| Product |
Dosage |
Temperature |
Packaging |
Distinguishing Trait |
| Sodium-free Refining Flux |
0.1% to 0.4% |
700 to 740 C and above |
1 / 2.5 / 5 kg bag |
Contains no sodium, avoiding sodium embrittlement at grain boundaries |
| High Efficiency Refining, White Tablet |
0.2% to 0.7% |
710 to 730 C and above |
500 g block |
Pressed block form, no scale needed for dosing |
| Granule Refining Flux |
0.08% to 0.15% |
700 to 720 C and above |
5 kg bag |
Granular form releases almost no visible smoke or odor |
The Sodium-free Refining Flux is the choice Nantong Angshen Metal Materials recommends for aluminum-magnesium-silicon and aluminum-magnesium alloys headed for anodizing, since eliminating sodium removes the embrittlement risk sodium segregation causes at grain boundaries. The High Efficiency Refining White Tablet is pressed into a fixed 500 gram block so operators calculate dosage by piece count, for example roughly 2 to 7 blocks per ton of molten aluminum within its 0.2 to 0.7 percent range, without weighing powder at the furnace. Granule Refining Flux runs at the lowest dosage of the three, 0.08 to 0.15 percent, and its particle form resists moisture absorption and clumping while releasing almost no visible smoke, which is why workshops prioritizing clean-air operation lean on this grade.
Composition Correction Flux: Magnesium and Calcium
Two further products in this Flux for Aluminum, Copper and Zinc range solve a different problem: excess magnesium or calcium already inside the melt, usually introduced through recycled feedstock or raw material variation.
Nantong Angshen Metal Materials publishes both dosing formulas directly rather than leaving buyers to estimate: a furnace running 3 tons of aluminum that needs a 1 percent magnesium reduction uses 18 kilograms of Magnesium Depletion Flux, and removing 2 kilograms of excess calcium from the same size furnace calls for 14 to 16 kilograms of Calcium Remover Flux, so the correct order quantity can be worked out before the melt is even tapped.
Pyrothermic Slag-Aluminum Separation Flux for Aluminum Ash Recovery
For recycled aluminum operations processing hot aluminum ash rather than furnace-surface dross, Nantong Angshen Metal Materials supplies Pyrothermic Slag-Aluminum Separation Flux, dosed at 0.2 to 0.4 percent of the total ash or melt volume and activated at a stable system temperature above 720 C. The flux penetrates the aluminum ash layer, breaking down the oxide film encapsulating fine aluminum droplets so they aggregate and settle out of the slag, raising aluminum recovery from ash that would otherwise be discarded as waste. It ships in 25 kilogram sealed bags, a packaging step up from the 1 to 5 kilogram bags used across the rest of the range, sized for the higher-volume ash mixers and roasting equipment this application typically runs.
Custom and Wholesale Flux Supply
Buyers searching for a Wholesale Flux for Aluminum Manufacturer, Wholesale Flux for Copper Factory or Wholesale Flux for Zinc Manufacturer generally want the same thing: one supplier that can hold dosage, temperature and packaging consistent across an entire smelting operation. Nantong Angshen Metal Materials operates as a Flux for Aluminum Factory covering dross separation, three refining options, magnesium and calcium correction, and ash recovery flux from a single production base at No.19 Heshun, Haian Economic Development Zone, Nantong, Jiangsu, so a Custom Flux for Aluminum order can combine several of these products for one furnace campaign. That capability extends to Custom Flux for Copper and Custom Flux for Zinc requests, since the same formulation approach, inorganic salts and active components mixed and granulated to a scientific proportion, adapts to the smelting characteristics of each base alloy.
As a China Flux for Aluminum Factory recognized as a "Little Giant" enterprise with High-Tech Enterprise status and a Corporate Technology Center, Nantong Angshen Metal Materials backs this flux range with Quality Management System, Environmental Management System and Occupational Health and Safety Management certification, and its products serve end markets spanning automotive lightweighting, high-speed rail, aerospace and shipbuilding, power electronics, pharmaceutical packaging and industrial machinery.
Frequently Asked Questions
What is the exact formula for calculating Magnesium Depletion Flux dosage
The dosage is calculated as the original magnesium content percentage minus the target magnesium content percentage, multiplied by the total molten aluminum weight, multiplied by 6 kilograms per ton per percentage point of reduction needed.
How is Calcium Remover Flux 1# or 2# dosage calculated
Both Calcium Remover Flux products use the same ratio: 7 to 8 kilograms of flux is required to remove every 1 kilogram of excess calcium detected in the melt, so the dosage is set from a pre-furnace calcium test rather than a fixed percentage.
Why choose Sodium-free Refining Flux over a standard refining agent
Sodium-free Refining Flux contains no sodium, which removes the risk of sodium segregating at grain boundaries and causing embrittlement, making it suited to aluminum-magnesium-silicon and aluminum-magnesium alloys and workpieces headed for anodizing.
At what temperature does Aluminum Dross Separating Drossing Flux work best
The flux is designed to activate once melt temperature is stable above 700 C, at which point it reacts with the oxide dross layer and turns it dry, loose and easy to skim off without dragging significant aluminum into the removed slag.
What makes Granule Refining Flux workshop friendly
Its granular form is effective at 700 to 720 C and above and releases almost no visible smoke or irritating odor during the reaction, and the particles resist moisture absorption and clumping compared with powdered refining agents.
What is Pyrothermic Slag-Aluminum Separation Flux used for
It is used in hot aluminum ash treatment to separate metallic aluminum from oxide slag, dosed at 0.2 to 0.4 percent of the ash or melt volume above 720 C and supplied in 25 kilogram bags for higher-volume ash mixer or roasting equipment.