HyPro System is a high performance, trivalent passivate for zinc and zinc-nickel electrodeposits. will provide outstanding performance of corrosion resistance per ASTM B 117. Exceeds 120 hours to white salts over zinc electrodeposits without the use of topcoats Exceeds 200 hours to white salts over zinc-nickel electrodeposits without the use of topcoats Can be baked without degradation of corrosion resistance Hexavalent free RoHS, ELV and WEEE compliant PAVCO, Inc. 1935 John Crosland Jr Drive Charlotte, NC 28208 Phone: 704-496-6800 Toll-free: 1-800-321-7735 or 1-877-PAVCO INC (728-2646) Fax: 704-496-6810 Order Fax (for orders only) 704-496-851 www.pavco.com
Operating Parameters for Zinc: Range 5-15% 10 % Optimum Immersion : 20-80 seconds 60 seconds ph: 1.8-2.5 2.2 Temperature: 75-105 F 24-40 C 85 F 29 C Operating Parameters for Zinc-Nickel: Range 5-15% 10 % Optimum Immersion : 30-180 seconds 60 seconds ph: For Blue bright finishing For Clear finishing Temperature: 75-125 F 24-52 C 3.0-4.0 3.2 3.6 110 F 43 C Typical Cycle: 1 Zinc or Zinc-Nickel plate with Pavco proprietary process. 2 Double counterflow rinse the work. 3 Activate the work using 1.0% Pavco s Zinc Dip Liquid for Zinc and 2% PreDip Zn-Ni for Zinc- Nickel, dip of 20 seconds. These products are absolutely necessary for a consistent passivate conversion coating. 4 Rinse. 5 Passivate the work with per the above parameters. 6 Rinse. 7 Hot water rinse, 120-140 F (50-60 C). 8 Dry the work thoroughly. Equipment: Tank: Temperature Control: Ventilation: Agitation: Optional Equipment: A polypropylene, PVC, or Koroseal lined steel tank. A Teflon immersion heater is recommended. Recommended, check with local authorities. Air agitation is mandatory. Automatic ph controller. Bath Makeup per 100 gallons (378.5 l): 1. Fill the process tank with 50 gallons (200 liters) of water. 2. Add 10 gallons (38 liters) of 3. Add water to the 100 gallon (378.5 l) level. 4. Adjust the ph if necessary. 2
of the Solution: In order to maintain the optimum concentration and ph, additions of (concentration) and (ph) should be made in small regular increments. Hot rinse and hot dry (too hot to hold) will increase salt spray. Additions of up to 1% acetic acid can be made to enhance film formation over Zinc deposit. Zinc Dip Liquid or PreDip Zn-Ni before will help maintain the ph and life of. Do not use stainless steel dipping baskets. Zinc concentration should be maintained <1 oz per gallon and iron <80 ppm. Analytical Procedures: Reagents 1. Sodium hydroxide 2. 30% hydrogen peroxide 3. 1:1 sulfuric acid 4. 10% potassium iodide 5. Starch solution 6. 0.1N sodium thiosulfate Procedure 1. Pipette a 5 ml bath sample into a 250 ml Erlenmeyer flask. 2. Add 100 mls de-ionized water. 3. Add 2 grams of sodium hydroxide to the flask and swirl to dissolve. 4. Add 2 mls of 30% hydrogen peroxide. 5. Boil the solution until all the peroxide is gone, at least 30 minutes. 6. Cool the solution to room temperature. 7. Add 10 mls of 1:1 sulfuric acid. 8. Add 5 mls of 10% potassium iodide. 9. Titrate the solution with 0.1N sodium thiosulfate to a straw color. 10. Add 2 mls of starch solution. 11. Continue the titration to the absence of a blue color which persists for 30 seconds. Bath Analysis by AA: Calculation: % = (ml. of Na 2 S 2 O 3 ) (N of Na 2 S 2 O 3 )(100) (mls of sample) (3.12) Each 1% of contains the equivalent of : 540 mg/l of chromium 3
Troubleshooting Chart for Zinc: Problem Cause Solution Work yellow, not blue too weak Analyze and correct concentration Concentration too high Temperature too low Immersion too short Passivate contaminated ph too high Analyze and dilute passivate to proper concentration Raise temperature to at least 80 F (26 C) Increase passivate immersion Dump and remake Lower ph with Concentration too low High drag out Add Low addition rate Salt spray lower than expected Time, temperature, or concentration low Metallic impurities High ph Add Increase dip, temperature or concentration Check bath for zinc and iron Lower ph with Parts hazy High ph Lower ph with High zinc concentration Poor maintenance of the Zinc Dip Liquid tank Cut bath or make a new one Analyze the Zinc Dip Liquid concentration and make adjustments Troubleshooting Chart for Zinc-Nickel: Problem Cause Solution Work yellow Concentration too high Analyze and dilute passivate to proper concentration Work clear when you want it blue Passivate contaminated (Zn, Fe above permissive limits) ph too low Immersion too short Dump and remake Raise the ph with diluted caustic Increase passivate immersion Work blue when you want it clear Temperature too high too weak ph too high Immersion too long Lower temperature to optimum, increase immersion if necessary. Analyze and correct concentration Lower the ph with Reduce passivate immersion 4
Temperature too low ph too low Salt spray lower than expected Time, temperature, or concentration low Metallic impurities High ph Raise temperature to optimum Increase the ph slowly with diluted caustic Increase dip, temperature or concentration Check bath for zinc and iron Lower ph with Parts hazy High ph Lower ph High zinc concentration Cut bath Poor maintenance of the PreDip Zn-Ni tank Analyze the PreDip Zn-Ni concentration and make adjustments Waste Treatment: Dispose of the concentrates or solutions thereof according to local waste treatment regulations. Safety: Handling Pavco mandates that the following safety equipment be used when handling chemicals in an electroplating environment: safety glasses, face shield, plastic or rubber apron, rubber gloves and safety shoes. Chemicals should only be handled by trained and experienced personnel. Storage Store Pavco products in a clean, well ventilated room which temperature remains above 45 F (7 C). Pavco products should remain in their original container with the lid or cap tightened. Drum pumps or pails must be clean prior to dispensing Pavco products to prevent contamination. If freezes during shipment or storage, warm the product and mix it well before use. Emergency Procedures Refer to the MSDS for detailed emergency procedures. Eye Contact Seek immediate medical attention. Flush the eyes with water for 15 m minutes. Skin Contact Remove all contaminated clothing. Wash the skin with soap and water. Seek medical attention. Inhalation Remove the person to an area with fresh air. Seek medical attention if necessary. Ingestion Seek immediate medical attention. Spill Dike the area to contain the spill. Refer to the MSDS for clean-up. Notify the proper authorities if required. *Note: Refer to the MSDS for detailed emergency procedures. Product Description & Shipping: (ZC 1405R) is a dark blue-green liquid. The specific gravity is between 1.3 and 1.5 with a ph less than 4. (ZC1431R) is a clear blue-green liquid. The specific gravity is between 1.060-1.095 with a ph of less than 2.0. is available in 5 gallon containers and 55 gallon drums. is available in 55 gallon drums. Revision Date: 5/27/2015 WARRANTY AND DISCLAIMER Technical information and recommendations contained herein are believed to be reliable, however, the accuracy or completeness thereof is not guaranteed. No statement or recommendation shall constitute a representation unless set forth in an agreement in writing by the seller and manufacturer. NO WARRANTY OR MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE IS MADE. The following warranty is made in lieu of any other warranties, express, implied, or statutory. Products are warranted to be free from defects on material and workmanship at the sold. The sole obligation of the seller and manufacturer under this warranty shall be to replace any product defective at the sold. Under no circumstances shall the manufacturer or seller be liable for any loss, damage, expense, direct or consequential, arising out of the use of or inability to use the product. Materials shall not be returned to the seller or manufacturer without express written permission. No information or suggestions given by us shall be deemed to be a recommendation to use any product in conflict with any existing patent rights. 5