Kemphos-329(accelerator Heavy Zinc Phosphating Che

Kemphos-329(Accelerator Heavy Zinc Phosphating Chemical)(Accelerator Heavy Zinc Phosphating Chemical) Product DescriptionKemphos-329 is an accelerated Zinc Phosphating process, which is specially formulated to produce medium to heavy weight coating on Iron and Steel surfaces by Hot Immersion method. Kemphos-329 is recommended for a wide range of ferrous metal articles such as car accessories, metal cores, forge and cast iron components, small weight coating gives a very good Product Specifications   a. Colour Light Green Liquid b. Chemical Composition Blend of phosphates, nitrates, zinc, nickel, activators etc. c. Odour Slightly Pungent d. Foaming Tendency Nil e. Reliability Good f. Handling Avoid Skin Contact g. Solubility Good h. pH Acidic Range I. Toxicity Nil j. Flash Point Nil k. Pollution Hazard Moderate Product Operating Data   Concentration 2.5 litres to 5 litres o Kemphos-329 100 litres of bath. Pointage 40 - 45 ml. (depends on the concentration) Iron Content 0.05-0.4% Temperature 80 - 90oC Immersion a) For Medium Weight Coating b) For Heavy weight Coating 3 -5 minutes 20 -40 minutes Product Operating ProcedureThe articles to be processed in the Kemphos-329 solution should be free from oils, greases, dirts, rust and scales etc. DegreasingRemove all oils and greases by Emulsion cleaning, or Trichloroethylene vapour degreasing or by solvent wiping. Thorough rinsing should be followed. Wherever necessary after degreasing. DerustingRemove rust and scale's present on the articles to be processed by immersion in Kemklin HD. If scale are heavy the articles should beyond by shot blasting or by pickling. After pickling rinsing should be carried out in two stages. PhosphatingImmerse the components in Kemphos-329 bath for 5 to 40 minutes at 80-85 dg. Ctemperature. Immersion time depends on the type of coating weight required. Medium weight coating can be produced by immersion for 3 - 5 minutes which serves a good base for under gloss pains heavier coatings with kemphos-329 can be obtained by Immersion for 20 -40 minutes which increase corrosion resistance. Rinse the phosphated articles in cold running water followed by hot water rinse to accelerate drying. PassivationArticles should be passivated by immersion in Hot Kemlyte-333 solution at 70oC for 30 seconds to 1 minute. DryingAfter passivation the articles should be dried immediately drying can be done inside a hot air circulating oven or by means of compressed air. Fill the tank 2/3 with water and add 2.5 to 5 liters of Kemphos-329 per 100 litres. Fill the bath upto its operating level and stir the solution thoroughly. Heat the bath to 70oC and add few kgs. Of degreased iron scrap or steel wool. After 15-20 minutes when the gassing has been ceased, remove the metal and check iron percentage. Ferrous Iron concentration should be 0.05% minimum. Otherwise repeat the operation. Adjust the pointage of bath to working condition by adding (Kemphos-329). Heat the bath to the operating temperature Kemphos-329 bath can be easily controlled within the operating temperature Kemphos-329 bath can be easily controlled within the operating limits by simple titration and maintained by periodic additions of Kemphos-329. Phosphate coating alone do not protect the rusting for long period and required sealing with paint, stain or oil immediately after coating which provides long term protection. Product Application EquipmentKemphos-329 tank should be fabricated with 3 to 4 mm thick M.S. Plates with continuous convection current hating system. Testing and Control Procedure Total AcidityPipette out 10 ml. Of the bath solution in a clean 100 ml beaker or conical flask and 2 to 3 drops of indicator Phenolphthalein and titrate against N/10 NaOH solution to a pink point. The number of Mis required represent the total acid pointage. Bath pointage should be maintained between 28 to 32 ml. Add 125 ml. Of Kemphos-329 per 100 lits of bath for each pointage below 30. Ferrous Ion ConcentrationPipette out 10 ml. Of bath solution in 150 conical flask. Add 2 ml or 50% H2SO4 and titrate with N/10 kmNO4 (3.16 gms/ltr) solution to pink persisting for 15 seconds. Multiply by the titration reading with 0.056, ti get percentage of ferrous Ions in the bath. Chemical ReplenishmentRestore the bath to the working level by adding water to makeup evaporation loss and drag out losses. Check the Kemphos-329 pointage. Safety MeasuresKemphose-329 is an acidic liquid material, and while handling proper care should be taken. Protect eyes and skin by means of goggles, aprons, gloves etc. If it comes into contact with skin and eyes, wash thoroughly with a flush of water and get medical advice. General InformationCorrosion Resistance: Excellent.