Kolkata, West Bengal
CGL Chemicals
| Business Type | Manufacturer, Exporter, Supplier |
| Purity | 99% |
| Form | Liquid |
| Packaging Size | 50 & 210 kgs |
| Click to view more | |
Preferred Buyer From
| Location | Worldwide |
Product Details
CGL & ITS MAJOR STEPS
Galvanizing is a process of imparting a sacrificial zinc coating on the iron or steel surface, thereby protecting the surface from atmosphere. Method of application differs according to the need and availability of measures.
The most popular galvanizing method is Hot Dip Galvanizing which is adaptable to almost all types of fabricated and non fabricated items. Flux type Continuous Galvanizing Line is such a kind where iron or steel strips are degreased, pickled and fluxed for surface preparation before dipping into the molten zinc.
Major Steps :
ALKALINE CLEANING - Removing oil, grease and soil from steel surface is crucial, otherwise dissolution of iron oxide / scale by pickling will be retarded.
ACID PICKLING - Ferrous metals have a surface coating of metallic oxide and / or scale which must be removed before zinc coating can be applied successfully. Pickling involves immersing the work in an acid to dissolve the scale or oxide film.
FLUXING - Liquid flux is recommended for continuous galvanizing line (C.G.L). It is used directly without any dilution. It has the ability to keep the sheets free from oxides by removing the rust blush prior to dip in the zinc bath. It also improves the zinc – iron adhesion in the galvanizing process.
PASSIVATION - Chromate conversion coating chemical is applied on galvanized iron and zinc –aluminum surfaces. It imparts excellent corrosion resistive coating that protects the underlying surface from weathering.
In case of nonox lines no fluxing is required. Further, depending on the sheet condition, acid pickling stage may also be omitted.
Range
| ALKALINE CLEANING | |
| PHOSCLEAN 123 | It is a low foaming strong alkaline cleaner for spray cum dip degreasing of iron and steel strips, with proven effectiveness in degreasing and removal of dirt and smuts. |
| ETCHINOL S 1121 | It is a low foaming strong alkaline liquid metal cleaner for spray cum dip degreasing of ferrous metals prior to hot dip galvanizing and also for cleaning and activating galvanized steel strips prior to chromate conversion. |
| ACID PICKLING | |
| FERROGUARD 358 | It is a powerful acid inhibitor used in hydrochloric acid pickling baths. When used in acid baths, minimizes metal loss, restricts severe metal pitting and delays the appearance of rust blushing after pickling operation. It forms a thin foam blanket on the surface of the pickling baths and thus minimizes fuming. It inhibits hydrochloric acid pickling baths followed by rinses may be used prior to electroplating, galvanizing, painting and phosphating processes. |
| FLUXING | |
| FLUXOL 336 | It is a liquid flux recommended for continuous galvanising line (C.G.L). It is used directly without any dilution. The flux is highly stable at galvanising temperature. Chemically active flux effectively removes impurities from the pickled steel to facilitate trouble free iron-zinc reaction. |
| PASSIVATION | |
| ALIBOND 292 | It is a chemical process, which produces a protective colourless chromate conversion coating on galvanized iron and zinc-aluminum surfaces. The coating protects the surface from decolouration, corrosion and finger staining. It can be used by dip or spray. |
| PASSILINE 293 | It is formulated for surface passivation of galvanized steel or galvalume in sheet or strip line operations. It is applied to the strip by immersing the strip or flooding the strip with the treatment solution. Removal of excess solution is then accomplished using squeeze roller. It protects the galvanized steel or galvalume surface from corrosion and metal staining during storage and shipment. |
| PASSILINE 294 | It is a specially designed chrome passivating chemical ideally suitable for galvanized steel and galvalume strips. It can be used by dip or flooding the chemical solution over the strips followed by usual roller squeezing and drying. The treated surfaces protect the metal from corrosion and staining for a long period of time. |
| PASSILINE 1291 | It is non hexavalent chromium based formulation for surface passivation of galvanized steel or galvalume in sheet or strip line operation. It protects the galvanized steel or galvalume surface from corrosion and metal staining during storage and shipment. |
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