PRETREATMENT TECHNICAL DATA SHEET WATER EMULSIFIABLE RUST PREVENTATIVE PRODUCT DESCRIPTION

Transcription

1 INDUSTRIAL COATINGS RA260 WATER EMULSIFIABLE RUST PREVENTATIVE PRODUCT DESCRIPTION is water emulsifiable rust preventative oil, which provides outstanding corrosion protection for all phosphate metals. It forms a protective barrier on surface of the metal and prevents corrosion by sealing out the atmosphere. TECHNICAL PROPERTIES Composition: Liquid Appearance: Oily Dark Brown Recommended Temperatures: F F Recommended Concentration: 10-25% by volume Optimum Concentration: 18-22% PRODUCT ADVANTAGES Can be operated over a wide concentration range. Can be diluted with water Flash point above F. Dries to a light oily transparent film. Improved performance over other emulsion oils in the presence of high chloride water. FEB12/REV3

2 USE & CONTROL INSTRUCTIONS: Operating Properties (Typical): Application: Operating Concentration: Immersion *Dry-to-Touch: 10-12%/volume (Humidity Protection Only) Corrosion Protection: 18-22%/volume Combination process: 15-18%/volume Operating ph: Operating temperature: F F Operating time: 30 seconds-2 minutes immersion Tank equipment: Mild steel *Specific process conditions may warrant operating outside the typical processing ranges, under these circumstances please consult your PPG representative. Oil emulsion preparation: For dry-to-touch parts (humidity protection) reduce the concentration to 10-12%/volume or add gallons per 100 gallons tank volume. For optimum corrosion protection, add gallons of per 100 gallons of tank volume. It is recommended that be used at concentrations from 10%-25% by volume in water, depending on the protection needed and whether a dry or oily surface is required. The water temperature for preparation of the solution bath should always be at least F to F to facilitate emulsification. THE OIL SHOULD ALWAYS BE ADDED TO THE WATER; OTHERWISE AN UNSTABLE EMULSION WILL RESULT. The bath may be heated during operation to a maximum of 160ºF, to increase the drying rate. Heating to temperatures in excess of 160ºF can break the emulsion causing the bath to lose effectiveness. Concentration of 10-15% over phosphate metal produces a dry film after the residual water has an opportunity to evaporate. Gentle air agitation or mechanical agitation (preferred method) of the bath is suggested during operation to maintain a homogeneous solution. The concentrations of 10%-25% should be maintained since an unstable emulsion may result above or below these limits.

3 The baths should be analyzed on a regular basis to assure proper concentrations. Analysis every two hours is considered good practice. The frequency will vary with the workload. ph ADJUSTMENT: Adjust ph using (PPG s ph Reserve) or dilute potassium hydroxide APPLICATION: can be applied by dip, spray or brush. After applying the emulsion, remove parts and permit them to dry before packaging. A recesses and pockets should be freed of entrapped emulsion to allow formation of the protective film. Water from the applied emulsion will completely evaporate in approximately three hours at room temperature after processing. REMOVAL: Since the residual film is an oil base, which is compatible with conventional petroleum lubricants, removal is not necessary in many cases. However, when removal is desired, the film is readily removed with mineral spirits, other petroleum solvents or a hot alkaline solution. SOLVENT CUT-BACK RUST PREVENTATIVE: Blend one part to seven parts of suitable petroleum solvent, such as mineral spirits, to produce a solvent cutback rust preventative. NOTE: should not be applied to a non-metallic surface, such as those manufactured of rubber, cork, paper, fabric or plastic, without first pre-testing the effects. Some of these types of materials may be softened or adversely affected by the. Oil Concentration: Equipment needed: ml. Beaker ml. glass graduated cylinder with stopper Reagent needed: 1:1 Sulfuric Acid / Water

4 Procedure: 1. Obtain a 100 ml. sample of the oil emulsion in a 250 ml. beaker 2. Measure 50 mls. into the 100 ml. graduated cylinder 3. Add 40 mls. of 1:1 Sulfuric Acid / water 4. Mix and allow to stand for one hour 5. The number of milliliters of oil split X 2 = % volume oil ph Control: The ph of bath should be maintained between ph may be checked using a ph meter. Equipment needed: ph meter with electrode 250 ml beaker Reagents needed: Certified Buffer Solution, ph 7.0 Certified Buffer Solution, ph 10.0 NOTE: Never pour reagents back into original container Dispose of them after each use or maintain separate containers and change weekly. Observe expiration dates on buffer containers. Procedure: Follow the manufacturer's instructions for operating the ph meter. 1. Standardize the instrument with the ph 7.0 and ph 10.0 buffer solutions. Rinse the electrode(s) with distilled or deionized water and blot dry with absorbent tissue. 2. Immerse the electrode(s) into the beaker containing the sample and read the ph on the meter scale. No calculation is necessary. 3. Rinse the electrodes thoroughly with deionized water first to remove the majority of the sample. Use acetone only if necessary after a thorough water rinse to remove any remaining sample on the electrode(s).note: The electrodes must always be placed in ph 7.0 buffer solution when not in use. 4. Add one (1) gallon of per 100 gallons of operating solution to raise the concentration by 1% volume.

5 Analysis per 100 gallon tank 10% vol. per 100 gallon tank 15% vol. per 100 gallon tank 20% vol. 20 % 0 gallons 0 gallons 0 gallons 18% 0 gallons 0 gallons 2 gallons 16% 0 gallons 0 gallons 4 gallons 14% 0 gallons 1 gallons 6 gallons 12% 0 gallons 3 gallons 8 gallons 10% 0 gallons 5 gallons 10 gallons 8% 2 gallons 7 gallons 12 gallons 6% 4 gallons 9 gallons 14 gallons 4% 6 gallons 11 gallons 16 gallons 2% 8 gallons 13 gallons 18 gallons 0% 10 gallons 15 gallons 20 gallons TECHNICAL DATA SHEET DISCLAIMER INDUSTRIAL COATINGS: * Statements and methods described herein are based upon the best information and practices known to PPG Industries, Inc. ( PPG ). Any statements or methods mentioned herein are general suggestions only and are not to be construed as representations or warranties as to safety, performance, or results. Since the suitability and performance of the product is highly dependent on the product user s processes, operations, and numerous other user-determined conditions, the user is solely responsible for, and assumes all responsibility, risk and liability arising from, the determination of whether the product is suitable for the user s purposes, including without limitation substrate, application process, pasteurization and/or processing, and end use. No testing, suggestions or data offered by PPG to the user shall relieve the user of this responsibility. PPG does not warrant freedom from patent infringement in the use of any formula or process set forth herein. PPG PRETREATMENT ST. CLAIR AVE EUCLID OH