MK4844B
Product use: used to cover aluminum and aluminum alloy melts to prevent melt burning and gas absorption; used for refining aluminum and aluminum alloy melts to play the role of degassing and slag removal.
Classification:
Description
1、Specification and application
Designation |
Type |
Shape |
Typical use description |
NK5048F2A |
Sodium- containing |
Granule Powder |
Aluminum and aluminum alloys covering flux,used for covering molten aluminum & aluminum alloys (Mg<2%)to prevent burning loss and air suction. |
NK4847F5A |
Aluminum and aluminum alloys refining flux, used for refining molten aluminum and aluminum alloys (Mg < 2%) in the furnace, to reduce the hydrogen content in the molten aluminum and achieve the effect of separating dross from aluminum. |
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NK4649F5A |
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NM4555A |
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NM6040B |
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MK4844B |
Sodium-free, Sodium removal |
Used for covering molten aluminum and aluminum alloys to prevent burning loss and air suction. |
|
Used for molten aluminum and aluminum alloys refining to play the role of degassing and deslagging. |
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MK4060B |
Uesd for refining and removal of alkali and alkaline earth metals from molten aluminum and aluminum alloys. |
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MK4357B |
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MK6040B |
2、Chemical composition
Designation |
Chemical composition (mass fraction) %
|
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NaCl |
KCl |
MgCl2 |
CaCl2 |
BaCl2 |
MgO |
KAlF4 |
Na3AlF6 |
CaF2 |
SO42- |
PO43- |
NO3- |
|
NK5048F2A |
48~52 |
46~50 |
- |
- |
- |
- |
- |
- |
1.5~2.5 |
0.2 |
0.05 |
0.01 |
NK4847F5A |
46~50 |
45~49 |
- |
- |
- |
- |
- |
4.5~5.5 |
- |
0.2 |
0.05 |
0.01 |
NK4649F5A |
44~48 |
47~51 |
- |
- |
- |
- |
4.5~5.5 |
- |
- |
0.2 |
0.05 |
0.01 |
NM4555A |
44~46 |
1.0 |
54~56 |
1.0 |
- |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
NM6040B |
59~61 |
1.0 |
39~41 |
1.0 |
- |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
MK4844B |
1.0 |
42~46 |
46~50 |
1.0 |
5~8 |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
MK4060B |
1.0 |
59~61 |
39~41 |
1.0 |
- |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
MK4357B |
1.0 |
56~58 |
42~44 |
1.0 |
- |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
MK6040B |
1.0 |
39~41 |
59~61 |
1.0 |
- |
0.5 |
- |
- |
- |
0.2 |
0.05 |
0.01 |
Notes: 1. The single value of the content in the table is the maximum limit. 2. The “-” in the table refers to non-conventional analytes.
|
3、Size specification
Shape/Size |
Sieve passing rate |
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Sieve aperture/mm |
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5.0 |
3.35 |
2.8 |
2.5 |
0.85 |
0.25 |
|
Powder(0.25mm~0.85mm) |
- |
- |
- |
- |
≥93% |
≤3% |
Small granules(>0.85mm~2.5mm) |
- |
- |
- |
≥95% |
≤3% |
- |
Medium granules(>2.5mm~3.35mm) |
- |
≥95% |
- |
≤3% |
- |
- |
Large granules(2.8mm~5.0mm) |
≥93% |
- |
≤4% |
- |
- |
- |
4、Moisture
Moisture of the powder type flux is not more than 0.50%, and of the granular flux is not more than 1.0%.
5、Liquidus temperature&Allowable deviation
Designation |
Liquidus temperature ℃ |
Allowable deviation |
NK5048F2A |
660 |
±7 |
NK4847F5A |
650 |
±7 |
NK4649F5A |
650 |
±7 |
NM4555A |
445 |
±7 |
NM6040B |
480 |
±6 |
MK4844B |
429 |
±6 |
MK4060B |
430 |
±6 |
MK4357B |
440 |
±6 |
MK6040B |
490 |
±6 |
6、Flux usage
Type of flux |
Flux usage kg/tAl |
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Primary aluminum |
Remelting aluminum ingot |
Secondary Aluminum |
Remelting aluminum ingot(or Primary aluminum)+50% Secondary Aluminum |
|
Covering |
0.6~1.5 |
0.3~1.1 |
0.8~1.8 |
0.7~1.7 |
Refining |
0.5~1.3 |
0.4~1.0 |
1.0~3.0 |
0.6~1.5 |
7、Removal efficiency of alkali and alkaline earth metals
Alkali metals and alkaline earth metals content of aluminum alloys before refining ppm |
The removal rate of alkali metals and alkaline earth metals is not less than % |
>20 |
80 |
10~20 |
60 |
<10 |
40 |
8、Advantages over traditional fluxes
Traditional fluxes
Chemical purification
Secondary burning loss
Secondary contamination of molten aluminum
Discharge harmful gas
Corrode and erode smelting control systems and equipment
Westen fluxes
Physical purification
No secondary burning loss
No secondary contamination of molten aluminum
Do not discharge harmful gas
Do not corrode and erode smelting control systems and equipment
Taking the purification of molten aluminum as an example
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