Matt effect powder for Cast Iron
Key words:
Enamel porcelain glaze, inorganic pigment
Classification:
Product Description
Ready-to-use enamel (RTU) is a kind of enamel powder mixed and milled with other additives according to the requirement of customers. It can be used directly after mixed with some water.
Matt effect Powder for Cast Iron
1. Material Ratio:
RTU Powder: 100
Clay: 6
Bentonite: 0.2
Borax: 0.3
Quartz Powder: 5
Sodium Nitrite: 0.2
Trisodium Phosphate: 0.2
Black PigmentT5-11: 4.0
In all: 110.5
Water: 50-55
2. Approval Standard:
a. Firing temperature: 750-780℃.
b. Coating: smooth and delicate
c. Gloss: standard ≤ ±5
d. Acid resistance: ≧A level
e. Fineness: 8-30 mesh. Pass 100g such powder through a 100-mesh sieve, there will be 15-20g residue.
f. Adherence: The cast iron turns to be dark gray when the coating is chipped off.
3. Test Method:
a. Mill the RTU powder, water and other materials proportionally for 8~10 minutes by ball mill.
b. Pass them through 80-mesh sieve and keep the consistency at 165~170g/100ml, (1.65~1.70g/cm3).
c. Cover 120-160 micron such enamel on a cast iron plate (L ⅹW ⅹH=20 0mmⅹ 50mm ⅹ5mm ) and fire them at 750-760℃ for 12 minutes
d. Compare them with samples made from normal powder.
4. Introduction:
This product is a kind of black mat glaze used for one-coat work such as cast iron, it is delicate in coating. The temperature should be very well controlled when firing to achieve good gloss.
5. Production Requirements:
All the qualified enamels should be grinded to 140-150 mesh first and mixed with eligible additives. Then make screening and packing after fineness meets the requirements.
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