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DESCALING CHEMICALS FOR BOILER AND COOLING TOWER
Conversion coating enhances the corrosion resistance property on the pretreated galvanized, galvalume and aluminum surface. It also helps inhibit the under paint corrosion creeping process that in turn increases the object life.
Conversion coating reinforces the bond between the paint film and the surface.
Since it is a single treatment process and does not require post rinse, it avoids additional effluent treatment and reduces the expenses for running the process.
PREFERRED CONVERSION COATING CHEMICALS:
| PRODUCT NAME | PRODUCT DETAILS | MODE OF APPLICATION | APPLICATION CONC. | APPLICATION TEMP. |
|---|---|---|---|---|
| GALVATREAT 300 | It is a single pack treatment used over G.I. strips, galvalume, and aluminum to produce a uniform conversion coating which improves adhesion, inhibits corrosion and increases the durability of paint finishes. | By Rollcoater / as per plant design |
30 – 35 % | Ambient – 65°C |
| GALVATREAT 1300 | It is a non-hexavalent chrome passivating chemical used over G.I. strips to produce conversion coatings suitable prior to continuous color coating. | By Rollcoater / as per plant design |
0.2 | Ambient – 65°C |
Range :
Range :
Microbond ProcessIt is a process designed with the nanoscale technology to increase adhesion and corrosion resistance of painted metal surfaces by producing a film enriched with tetravalent cations in form of thin organo-metallic complex over iron, zinc and aluminum surfaces at ambient temperature. It can replace conventional hot or cold zinc or zinc-calcium phosphate coatings prior to painting/Powder coating.
Range
| ALKALINE CLEANING | ||||||
| PHOSCLEAN 101 | It is a heavy duty alkaline cleaner and it is designed for the degreasing of steel, iron, ferrous alloys and nickel. It attacks aluminum and its alloys and tinned or galvanized surfaces. | |||||
| PHOSCLEAN 102 | It is a powdered caustic free alkaline cleaner used for dip degreasing of steel, zinc and aluminum articles. | |||||
| PHOSCLEAN 120L | It is an alkaline liquid metal cleaner for dip degreasing and activating of steel, galvanized wire, aluminum articles. | |||||
| PHOSCLEAN 122 | It is a caustic free alkaline cleaner used for spray degreasing of steel, zinc and aluminum articles. | |||||
| PHOSCLEAN 127 | It is a liquid degreasing chemical used by spray or dip cum spray machine for cleaning ferrous or non-ferrous articles. | |||||
| PHOSCLEAN 129 | It is a liquid degreasing chemical used by hand spray gun for cleaning painted ferrous or non-ferrous articles. The process is ideally suitable for cleaning sub-assemblies and finished articles before applying final coat of finish paint. | |||||
| PHOSCLEAN 130 | It is a liquid degreasing chemical used by spray washing machine for cleaning ferrous or non-ferrous articles. | |||||
| DERUSTING CHEMICAL | ||||||
| RUSTOKIK 163 | It is a deruster. It can be used at room temperature or hot. It emits no fumes, when it is used. It is widely suggested as deruster to get best phosphate coating on metals. | |||||
| RUSTOKIK 171 | It is a product for dip derusting and descaling of iron and steel surfaces. | |||||
| ACTIVATION CHEMICAL | ||||||
| CRYSTOFIX 317 | It is a Titanium Complex in mild alkaline medium in powder form and used by dip or spray to prepare a solution for conditioning metal surfaces when denser, uniform and finely crystalline phosphate coatings are desired. | |||||
| COLD DIP PHOSPHATING CHEMICAL | ||||||
| PHOSCHEM 198 | It is a zinc phosphating chemical used by immersion process at ambient temperature. It produces a smooth, compact, uniform coating on steel and zinc surfaces. | |||||
| PHOSCHEM 213 | It is a zinc phosphating chemical used by immersion process at ambient temperature. It produces a smooth, compact, uniform coating on steel and zinc surfaces. | |||||
| HOT DIP PHOSPHATING CHEMICAL | ||||||
| PHOSCHEM 191 | It is an accelerated hot dip process and is designed to produce a smooth zinc–calcium phosphate coating on steel and zinc surfaces. The phosphate coating is highly resistant to corrosion and produces an excellent base for subsequent painting, oiling or staining. | |||||
| PHOSCHEM 192 | It is an accelerated hot dip process and is designed to produce smooth zinc / zinc – iron phosphate coating on steel and zinc surfaces. The phosphate coating is highly resistant to corrosion and produces an excellent base for subsequent painting, oiling or staining. | |||||
| PHOSCHEM 193 | It is an accelerated hot dip process, which produces medium to heavy zinc-iron phosphate coatings on iron and steel surfaces. | |||||
| PHOSCHEM 196 | It is an accelerated hot dip process by which a heavy manganese – iron phosphate coating is produced on iron and steel parts. | |||||
| PHOSCHEM 197 | It is an accelerated dip phosphating chemical for mild steel. It produces an extra smooth, compact phosphate coating ideally suitable prior to conventional painting and powder coating. | |||||
| PHOSCHEM 209 | It is a zinc phosphating chemical used by immersion process at low temperature. It produces a smooth, compact, uniform coating on steel and zinc surfaces. | |||||
| PHOSCHEM 1194 | It is a self-accelerated single pack catalysed zinc phosphating chemical used to produce smooth dark grey phosphate coating over steel components. The corrosion resistant zinc phosphate coating is obtained without pre-dip in any activating solution. The built-in grain refining agent serves the purpose. It operates at low temperature without any regular accelerator addition and forms a compact and uniform grey zinc phosphate coating suitable for painting or Powder coating. | |||||
| SPRAY PHOSPHATING CHEMICAL | ||||||
| PHOSCHEM 223 | It is an accelerated zinc phosphating chemical developed for spray application on steel and zinc surfaces to produce a smooth, compact, corrosion-resistant and paint bonding coating. The fine-textured coating minimizes paint shrinkage, retains paint gloss and prevents rust creep under the damaged paint film. | |||||
| PHOSCHEM 229 | It is an accelerated phosphating chemical developed for spray application on steel, G.I. and Zinc and Aluminum surfaces to produce an extra smooth, compact, corrosion-resistant and paint bonding phosphate coating which suitable prior to electrophoretic paint and “Powder” coating. When used under conventional paint it minimizes paint shrinkage, retains paint gloss and prevents rust creep. | |||||
| WIRE DRAWING PHOSPHATING CHEMICAL | ||||||
| PHOSCHEM 233 | It is a single pack chlorate accelerated zinc phosphating chemical ideally suitable for producing phosphate coating on different type of steels to facilitate cold mechanical deformation. It can be used for wire and tube drawing, cold heading, nosing etc. | |||||
| PHOSCHEM 234 | It is a single pack chlorate-nitrate accelerated zinc phosphating chemical ideally suited for quick and uniform phosphating of different type of steel wires even when several strands of it are simultaneously run through the bath. | |||||
| PHOSCHEM 236 | It is an accelerated hot dip process for producing a zinc phosphate coating on steel to facilitate cold mechanical deformation. | |||||
| IRON PHOSPHATE PHOSPHATING CHEMICAL | ||||||
| RUSTOKIK 165 | It is a cleaner for iron and aluminum. It cleans oil, grease and rust from the surface and produces a thin coating of phosphate on the surface, suitable for paint and Sealkote 368 application. | |||||
| RUSTOKIK 169 | It is a cleaner for iron and aluminum. It cleans rust from ferrous metals and produces a thin coating of phosphate on the surface, suitable for paint application. It also removes white rust from aluminum surface prior to subsequent treatment. | |||||
| PHOSCHEM 228 | It is a spray degreasing cum phosphating chemical, which simultaneously degreases and produces a very light weight iron phosphate coating on steel surface. | |||||
| PHOSCHEM 1195 | It is a self-accelerated phosphating chemical for immersion application over steel and zinc surfaces. The process produces a non-metallic phosphate coating which increases the adhesion and durability of paint finishes without pre-dip in any activating solution. | |||||
| PASSIVATION CHEMICAL | ||||||
| PHOSBOND 306 | It is hexavalent chromium based product used in the final rinse after pretreatment either by immersion or spray process. | |||||
| PHOSBOND 312 | It is an alkaline passivating chemical free from chromium and phosphate. This is used in the final rinse by dip or spray after phosphating of iron and steel articles. It improves corrosion resistance properties of dried phosphated surfaces and reduces the risk of paint blistering under humid conditions. | |||||
INTRODUCTION :
The importance of protecting from corrosion articles used in open environment made of plain steel, such as structures and tubes etc., is obvious, and coating the steel surface with a thin layer of a corrosion resistant metal is a most convenient means of protection, best applied as a final operation in the manufacture of these products. Of all the metals used for the purpose of protection against corrosion, zinc is one of the cheapest and the one most widely used, being suitable for nearly every kind of article, except food containers. Use of zinc is not only cheaper and easy to coat but it also protects iron or steel by providing cathodic or sacrificial protection.
SURFACE PREPARATION CHEMICALS :
Mainly steel tubes / structures are galvanized in this method.
ALKALINE DEGREASING :
Degreasing – Removing oil, grease and dirt from steel is crucial to good galvanizing. Without this process acid pickling will be disturbed and a patchy zinc coating will form after galvanizing.
1. Conventional Alkaline Degreasing Method - Phosclean 101 – It is a strong alkaline cleaner for degreasing of iron and steel strips by dipping method, with proven effectiveness in degreasing and removal of dirt and smuts prior to hot dip galvanizing.
ACID DEGREASING :
Acid Degreasing Method – Phosclean 151 – It is an acidic degreasing chemical used to remove oil, grease, soils etc from ferrous metals prior to pickling/ derusting in structures and pipes Galvanizing line.
2. Acid cleaning is a process in which an acidic medium, in combination with a unique blend of non ionic and cationic surfactant for better wetting and surface tension effect, is employed to remove light oxides, shop soils, oil, grease and other contaminants from the work. The advantage of acid degreasing over conventional degreasing is that it does not require high temperature and rinsing process. It can directly be subjected to acid pickling. Hence, it is a energy saving and eco-friendly product.
DESCALING / ACID PICKLING :
Ferrous metals have a surface coating of metallic oxide or scale which must be removed before the zinc coating can be applied successfully. The most common process for removing this film is called pickling. Pickling involves immersing the work in an acid to dissolve the scale or oxide film. Many acids can be used; the most common for galvanizers is hydrochloric acid.
1. Ferroguard 358 (Acid inhibitor) – It is a powerful acid inhibitor in hydrochloric acid, when used in acid baths minimizes metal loss and forms a foam blanket on the surface of the pickling baths and thus minimizes fuming.
FLUXING CHEMICALS :
A property of the preflux bath is that it makes a thin coating on metal surface which prevent further rusting and at the time of galvanizing it removes the oxide layer from the surface and confirms the zinc metal adhesion.
1. Fluxol 340 – It is a powerful wet flux, in powder form and applied by making a solution by dip prior to galvanizing.
TOP FLUX / BLANKET FLUX :
Galvanizing or molten zinc bath needs some flux which removes excess zinc from the galvanized surface, it reduces heat radiation to some extent as well.
1. Fluxol 337 (Top flux) – It is a powdered product used as such over molten zinc bath, to provide a flux cover on top of the galvanizing bath which is less fumes and eco-friendly.
PASSIVATING CHEMICALS :
Zinc is also a sensitive metal which forms white rust on exposure to air and moisture. The corrosion products give an unsightly, mottled surface consisting of the loose powder that makes it unfit for the industrial and domestic uses. White rust damages long-term protection of the base steel. Passivation of the galvanized surface is inevitable for long life of the articles.
1. Alibond 292 – It is a hexavalent chromium based chemical process, which produces a protective colourless chromate conversion coating on galvanized iron. The coating protects the surface from corrosion and finger staining and renders a gloss to the surface. It can be used by dip or spray.
2. Alibond 304 – Due to the hazardous nature of hexavalent chromium industries prefer trivalent chromium based products. It is a trivalent chromium based chemical process, which produces a protective almost colourless to very light bluish chromate passivating film on galvanized iron. It can be used by dip or spray in galvanizing plants and specially recommended for continuous strip lines.
3. Zipac 305 (Non chrome) – It is a unique eco friendly product free from chromium. It is a water soluble conversion cum passivating chemical, ideally suitable for zinc coated metal surfaces. The chemical forms a thin film over the zinc coated steel (G.I.), which forms a protective non-chrome layer to improve the corrosion resistance properties of the treated metal. ZIPAC 305 may also be used effectively for aluminium –zinc coated strips. The toxicity profile of chromium and pollution effect of chromates can be eliminated by using the new generation product in coil lines.
HYDROCHEM 7008
INTRODUCTIONIt is an anti-carburising compound used while masking of selected areas component where carbon penetration is not desired. It works very effectively for the surfaces of the components where masking compound is applied during process of carburising
METHOD OF APPLICATIONMasking compound which can be easily applied on the chosen areas by brushing, dipping or by spraying. Normally a uniform layer obtainable by single coat application. Two coats of this compound is recommended where case depth for carburising is more.
TYPES OF MASKING COMPOUND
A) Non Aqueous Masking Compound.This is a quick drying masking compound which is very stable and also effective in preventing carbon penetration on selected surfaces.
B) Water Based Masking CompoundThis is a stable and eco-friendly masking compound easily applicable for prevention of carbon penetration as required.
ADVANTAGES1) Simple in application by brushing, dipping or spraying.2) Quick drying in a well ventilated area.3) Stable and eco-friendly in use.4) No risk of cracking on uniform coating during process of heat treatment5) Very much cost effective.
BIOCIDES FOR COOLING TOWER
Besides above mentioned Biocides, we have Glutaraldehyde based, MBT and DBNPA Based and other types of Biocides as per customers need.
CORROSION INHIBITORS FOR OIL AND GAS FIELD
ANTISCALANT FOR SUGAR JUICE EVAPORATORS
THERMOCHEM HB 100 is a combustion additive powder, designed for load removal and prevention of
firesides deposit on all types of boiler tubes, heaters, furnaces and economizers. It is specially designed
for rice husk, bagasse and Briquettes fired units to reduce consumption as well as improving
combustion efficiency.
