Cast-iron Enamel Frits

Cast-iron Enamel Frits
Reference No. Description
Expansion Firing Application
Coefficient (107) Temperature (°
C)
UNI-125 cast iron black enamel
334.2 760-780
UNI-126 cast iron black enamel
332.4 760-780
UNI-622 thick cast iron black
enamel 314.4 750-780
UNI-623 thick cast-iron black
enamel 271.4 780-800
UNI-625 cast-iron black enamel
244 760-780
UNI-308 cast-iron transparent
enamel 332.1 760-780
UNI-1271 thick cast iron black
enamel 274 750-780
UNI-1308 cast-iron transparent
enamel 283.1 760-780
UNI-1309 cast-iron transparent
enamel 335.5 740-760
UNI-2700 cast-iron opaque enamel
289 780-800
UNI-2707 acid resistant cast iron
black enamel 305.6 780-800
UNI-2708 cast-iron white cover
coat 302.4 800-820
UNI-2709 acid resistant cast-iron
white cover coat 310.2 820-850
Note: enameling on surface of
cast iron, as called Wet-way
Coating enamel first, cleaning
the surface of earthen bowl after
anneal .

1 Milling additon ratio for cast-
iron black enamel:
frit 100 clay 5-7
quartz powder 0-5 borax 0.5-0.8
sodium nitrite 0.2 black
pigment 2-5
water 50-55 ml
note: adding 10-20% quartz powder
in acid resistant black enamel
frit slurry fineness 0.5-
1.0g/150mesh.100 ml specific
gravity 160-170g/100ml
2 cast iron opaque enamel(sub-
opaque enamel )
frit 100 clay 5-6
borax 0.5-0.8 aluminium oxide 2
water 45-50ml
note: sub-opaque enamel consist
of cast iron opaque enamel,with
same milling addition ratio.
frit slurry fineness 1-
1.5g/150¡¤100ml specific
gravity 160-165g/100ml