CHROMATIZING Aluminium chromate and its applications What we call as phosphating to steel an iron is called chromating for aluminium surfaces. Also it is knows as alodine coating. There are yellow, green and transparent chromating types. Yellow chromate coats Cr+6, green chromate coats Cr+3. Coating weight can vary according to application time and coating type. Drying temperature must not pass over 65 º C for yellow chromate and 85 º C for green and transparent chromate coatings. It is importat to provide clean, grease free surface before chromate application. If hot degreasing bath is prepared, caustic bath and following nitric acid bath can be used for pickling. On the other hand, acidic degreasing baths have pickling ability with itselves. Chromating and paint adhesion will be much better on pickled and degreased aluminium surface.

Vitarag Chemicals is a leading Manufacturer of 7 tank process chemicals. we have been supplying chemicals in India. · 7 TANK PROCESS : · This invention relates to a process of pretreating and painting the surface of zinc-based metals. Importance of Understanding the Chemicals Used in the 7 Tank Process for Powder Coating Before we delve into the types of chemicals utilized in the 7-tank process, let\\'s first explore the significance of understanding them. Knowledge about these chemicals empowers engineers, technicians, and industry professionals to make informed decisions at each stage of the process. Understanding the characteristics, applications, and potential risks associated with different chemicals is crucial. Conversion Coating Chemicals in 7-Tank Process Chemicals Conversion coating chemicals play a crucial role in the highly effective 7-tank process, providing an essential step in the surface preparation of various metals. Their significance lies in their ability to enhance the durability and corrosion resistance of the materials they are applied to. conversion coating chemicals are an indispensable part of any metal finishing process. The types of conversion coating chemicals used are diverse, including phosphate-based, chromate-based, and zirconium-based coatings. Each type offers unique qualities and benefits, ensuring excellent adhesion and surface protection. These chemicals form a thin, uniform layer on the metal surface, which not only acte as a barrier against corrosion but also facilitat adhesion of subsequent coatings, such as Privacy Terms powder coating. · By zinc-based metals we mean zinc itself and alloys of zinc with minor proportions of other alloying materials, together with those impurities known to the art to occur therein. For example the metal may be zinc sheet, formed zinc strip or zinc-based die-casting alloys, typically containing 90 percent or more by weight of zinc. Alternatively the metal surface to be treated may be a zinc coating applied to an iron or steel substrated, for example by hot dipping or electrodeposition and usually referred to as galvanized iron or steel. The zinc surface may also be passivated by, for example, subjecting it to the action of an aqueous solution of certain chromium salts, to further increase its corrosion resistance. · Metal surfaces of the above type are frequently found to provide unfavorable surfaces on which to deposit paint films, a commonly observed defect being that of poor adhesion between the paint and the metal substrate. · It has been proposed to pretreat the surface of zinc-based metals prior to painting them by subjecting the surface to the action of a chemical solution which deposits an adherent crystalline zinc phosphate conversion coating thereon. The process usually involves a precleaning stage and optionally a water rinse to remove dirt and/or oily residues from the surface prior to its chemical treatment. The phosphate coating is believed to have a beneficial keying action on paint coatings applied to its surface, thus improving the paint to metal adhesion. Although this treatment has given satisfactory results in many instances, there still exist circumstances in which the adhesion between the metal surface and the paint coating may fall short of acceptable commercial standards.

Vitarag Chemicals is a leading Manufacturer of 7 tank process chemicals. we have been supplying chemicals in India. · 7 TANK PROCESS : · This invention relates to a process of pretreating and painting the surface of zinc-based metals. Importance of Understanding the Chemicals Used in the 7 Tank Process for Powder Coating Before we delve into the types of chemicals utilized in the 7-tank process, let\\'s first explore the significance of understanding them. Knowledge about these chemicals empowers engineers, technicians, and industry professionals to make informed decisions at each stage of the process. Understanding the characteristics, applications, and potential risks associated with different chemicals is crucial. Conversion Coating Chemicals in 7-Tank Process Chemicals Conversion coating chemicals play a crucial role in the highly effective 7-tank process, providing an essential step in the surface preparation of various metals. Their significance lies in their ability to enhance the durability and corrosion resistance of the materials they are applied to. conversion coating chemicals are an indispensable part of any metal finishing process. The types of conversion coating chemicals used are diverse, including phosphate-based, chromate-based, and zirconium-based coatings. Each type offers unique qualities and benefits, ensuring excellent adhesion and surface protection. These chemicals form a thin, uniform layer on the metal surface, which not only acte as a barrier against corrosion but also facilitat adhesion of subsequent coatings, such as Privacy Terms powder coating.

VCHROM - AL is a concentrated colourless liquid which can be used to produce colourless non-chromate films/coatings on aluminium and its alloys. This process is most suitable to provide under-paint corrosion and to provide good bonding of powder coats or liquid paints with the aluminium surface. VCHROM - AL poses no pollution problems as compared to chromate treatments. VCHROM - AL process is very simple and economical as mild degreasing and pre-treatment takes place simultaneously while giving a good colourless coating that suits perfectly well prior to coating or painting. If oil contamination is more on surface, separate cleaning in ALM-81 is recommended, using 3-5% concentration. USES : VCHROM - AL process can be used on any aluminium surfaces or on aluminium alloys. It may not be suitable on certain alloys or castings as it may tend to produce a superficial black film, which needs to be washed thoroughly well with water.

COROSEAL-108 is a neutral liquid chemical consisting of surfactants, dispersants and corrosion Inhibitors. It is a multipurpose cleaning agent, widely used for removal of soils, oils, cutting fluids, Stamping, buffing and drawing compounds from ferrous as well as non-ferrous metal surfaces. COROSEAL-108 is easily soluble in water at all proportions and is very safe to use as it does not contain any chlorinated solvents, phenols, chromates, nitrites or cresols. It is non-toxic and biodegradable.

Bio Degradable Degreasing is an alkaline liquid chemical consisting of surfactants, dispersants and corrosion inhibitors. Bio Degradable Degreasing is a multipurpose cleaning agent, Bio Degradable Degreasing widely used for removal of soils, oils, cutting fluids, stamping, buffing and drawing compounds from ferrous as well as non-ferrous metal surfaces. Bio Degradable Degreasing is easily soluble in water at all proportions and is very safe to use as Bio Degradable Degreasing does not contain any chlorinated solvents, phenols, chromates, nitrites or cresols. Bio Degradable Degreasing is non-toxic. Bio Degradable Degreasing can be used by wipe, immersion or spray in various types of cleaning equipments such as tumblers, vibrators, agitators, power washers, steam cleaners, immersion or agitated tanks, ultrasonic or vapour cleaners etc. Since Bio Degradable Degreasing contains corrosion inhibitors, no rinse is required after cleaning hence Bio Degradable Degreasing cleans and protects simultaneously. Bio Degradable Degreasing Protection period may depend on operating parameters and indoor conditions.

VCHEMKLIN is designed to simplify pre-paint treatment of metal aircraft surfaces like wing sections, fuselages as well as automobiles and tractor assemblies. Complete assembled planes can be cleaned and conditioned right on the field without the use of special equipment. Easy hand application of VCHEMKLIN by brushing, swabbing or spraying provides thoroughly clean passivated surface ready for touch-up or complete refinishing. FAST, LOW COST METHOD :- Passivating with VCHEMKLIN is not intended to replace anodizing and chromatising in aircraft and automobile manufacturing. However it produces similar results faster and at much lower cost where those processes are impractical or unavailable. REMOVES, PREVENTS CORROSION :- Light oxides and surface corrosive residues are quickly and easily removed by merely applying VCHEMKLIN by wipe method and rinsing with water. Surfaces is made chemically inert oxide and soil free to prevent corrosion from spreading under paint coatings.

COROSEAL-108 is an neutral liquid chemical consisting of surfactants, dispersants and corrosioninhibitors. It is a multipurpose cleaning agent, widely used for removal of soils, oils, cutting fluids,stamping, buffing and drawing compounds from ferrous as well as non-ferrous metal surfaces.COROSEAL-108 is easily soluble in water at all proportions and is very safe to use as it does notcontain any chlorinated solvents, phenols, chromates, nitrites or cresols. It is non-toxic and biodegradable.COROSEAL-108 can be used by wipe, immersion or spray in various types of cleaninge

Corrosion Inhibitor Chemical is an neutral liquid chemical consisting of surfactants, dispersants and corrosioninhibitors. It is a multipurpose cleaning agent, widely used for removal of soils, oils, cutting fluids,stamping, buffing and drawing compounds from ferrous as well as non-ferrous metal surfaces. Corrosion Inhibitor Chemical is easily soluble in water at all proportions and is very safe to use as it does notcontain any chlorinated solvents, phenols, chromates, nitrites or cresols. It is non-toxic and biodegradable. Corrosion Inhibitor Chemical can be used by wipe, immersion or spray in various types of cleaninge