High Acid Resistance Aluminum Oxide Ceramic Diaphragm With Smooth
Surface
1.Introduction
Our Alumina ceramic diaphragm is made from high purity alumina
ceramic powder, and it has very good performance of acid fastness
and fastness to alkali. We sinter ceramic diaphragm at 1500 ℃, so
our firing cost is high. It can make high strength ceramic
diaphragm. The key technology of this product is that the porosity
of the product is high and the distribution of pores is uniform,
the pore diameter is moderate, the resistance of electrolysis is
very small, and the uniform current distribution can be obtained,
which is the product performance.
2.Specification
| Water absorbtion | >40 |
| Grain size | 0.5-2 μm |
| Breaking strength | > 20Mpa |
| Acid fastness | >99% |
| Fastness to alkali | >94% |
| Size | 400*500*80mm |
| 160*60*530mm |
| φ210*800mm,φ210*650mm,φ210*560mm
|
3.Using area of Alumina ceramic diaphragm
Electrolytic ceramic diaphragm is mainly used in the following two
aspects in the electroplating industry.
1.Reducing Trivalent Chromium in Coarse Solution by Electrolytic
Redox principle. ABS plastic plating pretreatment of coarse liquid,
roughing plating quality directly affects the quality of plastic
parts. In rough of process in the rough of liquid in the of six
price chrome acid and products produced corrosion reaction
generated three price chrome and organic, in rough of process in
the, six price chrome will into three price chrome, and with three
price chrome of content increased, will led to rough of liquid
oxidation capacity weakened, and ABS generated hydrophilic polar
group of speed will sharply declined, led to rough of effect
declined, due to rough of bad, plastic artifacts and plating layer
of combines force also will obviously declined. Trivalent chromium
if the concentration rises above 30 grams per liter, will seriously
affect the up-scaling quality resulted in coarse liquid scrap.
Roughing solution waste contains large amounts of chromic anhydride
and sulfuric acid, it will be discarded, not only wastes a lot of
resources, but will seriously pollute the environment. Abroad
(particularly in the auto industry) using ceramic membrane
electrolysis process reduces the trivalent chromium, regeneration
of the roughing solution in order to achieve energy conservation
and environmental protection.
2.Used in decorative chromium and hard chromiumplating to remove
impurities. In the production of decorative chromium and hard
chromium, due to workpiece cleaning dirtyreasons, making bath
cationic impurities in gradually increasing, impurities will result
in too much chrome plating color andperformance degradation even
scrapped the plating, electrolytic treatment of plating liquid and
power consumption for a longtime. Ceramic diaphragm electrolytic
plating solutions can effectively remove impurities in the
electrolyte captions, thus improving plating quality of products,
extending the life of plating solutions.
