In the bag filter, the bag cage will directly face various working conditions as the support skeleton of the bag. In order to adapt to the environment with different temperature, humidity and corrosion requirements, the ordinary carbon steel bag cage must undergo surface anti-corrosion treatment to improve its service life. As a professional manufacturer of bag type dust removal accessories, Chang has accumulated quite mature bag cage surface treatment technology after more than 10 years of technological innovation and experience. Now it introduces the following features and application of bag cage surface treatment for the majority of users. And industry partners reference:
1 Galvanized surface:
With zinc electroplating, it can prevent rust and oxidation, is cheap, and has a thin coating. It is not suitable for humid and corrosive environments and is suitable for dry and low-corrosion environments such as food and construction industries.
2 Pure epoxy powder coating:
Pure epoxy powder electrostatic spraying. Acid resistance, alkali resistance, but the price is expensive, poor temperature resistance, should not be used in a long time in high temperature environment, after the spray vibration easily prone to coating aging, cracking. Cracked corners will wear the cloth bag. Not suitable for high temperature environments.
3 Solvent type silicone soak
The use of solvent-based silicone coatings, soaked with organic silicon layer adhesion, acid, alkali and heat resistance, but the poor adsorption, after a period of time the surface paint layer prone to cracking, spalling and other phenomena affect the life of the coating, It is also easy to grind the bag to affect the life of the bag.
4 Silicone Powder Coating:
|
No. |
Test items |
unit of measurement |
test value |
|
1 |
luster（GB/T9754,60°） |
——- |
<10% |
|
2 |
Impact(ASTM D2749-93) |
——- |
40in/lbs(Direct Impact) |
|
3 |
Adhesion（ASTM D3359-97） |
level |
3-4B |
|
4 |
Bending test（ASTM D522-93a） |
——- |
5/16in.dia.，No cracks |
|
5 |
Hardness test（ASTM D3363-92a） |
——- |
>2H |
|
6 |
Acid resistance（GB/T9274-1998） |
—— |
No abnormal film within 144h |
|
7 |
Water resistance（GB/T1733-1993） |
No abnormal film within 500h |
|
|
8 |
Alkali resistance（GB/T9274-1998）,24h |
——- |
No abnormal film within 24h |
|
9 |
Temperature resistance（200℃） |
——- |
No change in coating within 240h |