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BONDERITZTechnical Process Bulletin <br /> BONDERITE M-CR 1200S AERO <br /> CHROMATE COATING <br /> (KNOWN AS ALODINE 1200S) <br /> TREATING WITH BONDERITE M-CR 12005 AERO (known as ALODINE 12005) PROCESSING SOLUTION: <br /> Buildup(Immersion or Spray): <br /> Fill the tank about three-fourths full with cold water for each 100 gallons of final solution volume add 6.3 pounds of <br /> BONDERITE M-CR 1200S AERO (known as ALODINE 12005) and circulate until thoroughly mixed. Finally, add sufficient <br /> water to bring the solution up to the working level and then heat the operating temperature. <br /> Buildup(Brush): <br /> Mix 2 oz. of BONDERITE M-CR 1200S AERO (known as ALODINE 12005) coating chemical per gallon of water(this is <br /> equivalent to 15 g of BONDERITE M-CR 12005 AERO (known as ALODINE 1200S) coating chemical per liter of solution). <br /> Stir well until the powder is dissolved. <br /> Note: A small amount of insoluble material may settle out of solution;this can be disregarded. Use an acid-resistant <br /> container when preparing the solution. <br /> Operation: <br /> Time: 15 seconds to 3 minutes. <br /> Temperature: 70°to 100° Fahrenheit. <br /> Operational Recommendations: <br /> Each alloy reacts with the BONDERITE M-CR 12005 AERO (known as ALODINE 12005) coating chemical bath to produce a <br /> coating that is characteristic of the alloy. For the treating time selected,the bath should produce a light, iridescent <br /> golden to tan colored coating on aluminum. If the desired coatings are not obtained, add BONDERITE M-CR 12005 AERO <br /> (known as ALODINE 12005) in 1/4 oz increments (up to a maximum of 3.0 oz/gal) until satisfactory coatings are <br /> produced. As the concentration of BONDERITE M-CR 12005 AERO (known as ALODINE 12005) is increased,the bath will <br /> have to be titrated to determine the operating titration. The desired coatings may also be obtained by adjusting the pH. <br /> The initial charge and replenishment data contained herein are normal for most installations; however, our <br /> representative may suggest a deviation from this data if indicated by local conditions. <br /> If the BONDERITE coating is powdery,the cause may be one or more of the following: <br /> 1. The work has been improperly cleaned and/or rinsed. <br /> 2. The concentration of the BONDERITE coating chemical(s) in the bath is too high. <br /> 3. The BONDERITE M-CR 12005 AERO (known as ALODINE 12005) bath has become contaminated with phosphates, <br /> sulfates, chlorides, or some other contaminant (analysis required). <br /> 4. The coating time is too long. <br /> 5. The bath temperature is too high. <br /> 6. The pH of the bath is too low for the concentration selected. <br /> Henkel <br /> 4of8 <br />