Blackening Chemicals Safety is a new revolutionary development in cold black finishing. It will impart jet black conversion coating to steels, cast iron and other ferrous metals at room-temperature. VCBLK HB-18 process is easy to do in-house. It is non-caustic, non-splattering, safe, energy saving, fast, dependable and convenient. It increases productivity and lowers labour costs. Finishing can be done anywhere without special equipment, ventilation, heating systems or any complicated control procedures. EQUIPMENT REQUIRED Acid Resistant tanks, containers, tumbling barrels, baskets, hooks and racks must be used with VCBLK HB-18 and derusting tank. Plastic or Rubber lined tanks and plastic-coated hooks and racks are suitable for both VCBLK HB-18 and derusting tanks. Mild steel may be used for degreasing, rinsing & sealant tanks. DIRECTIONS FOR USE 1. Thoroughly clean and degrease the pieces to be blackened in KLN 18. The type and degree of surface soil will determine the length of time and the number of cleaning steps and cleaning temperature (M.S. Tank). 2. Rinse thoroughly in overflowing cold water (M.S. Tank). 3. Surface rust, if present, should be removed following cleaning cycle using RLN 27 at a concentration of 1:1 at room temperature (FRP Tank). 4. Rinse thoroughly in overflowing cold water (M.S. Tank). 5. Immerse the pieces in VCBLK HB-18 solution. VCBLK HB-18 solution is to be diluted with 6 to 12 parts of water depending on alloy and surface, hardness. The immersion time necessary to produce the desired depth of black, is usually one to three minutes. For most parts a dilution of one part VCBLK HB-18 with 9 parts of water would give good results (FRP Tank). 6. Rinse the pieces in overflowing cold water for 30 seconds (M.S. Tank).

VC AR306 INTRODUCTION : VC AR306 is a powder based activator which is used at low concentrations prior to zinc phosphating. By dipping the parts in VC AR306 bath prior to phosphating, it accelerates the subsequent phosphating process and also refines the structure of the zinc phosphate coating resulting in smooth fine uniform compact coating. PROPERTIES : Colour : White Form : Free flowing powder PH of 0.2-0.3% : 8-9 APPLICATION : VC AR306 bath can be prepared in M.S. or plastic tank/container. It is to be used at 0.2% to 0.3% concentration with water, at room temperature for one minute. The bath should always be kept in a slightly agitated condition by mechanical means or by passing compressed air from the bottom of the tank to avoid settling of the activator at the bottom of the tank. MAINTENANCE OF BATH : Once the bath is prepared, daily addition should be made once during the day. Addition should be made when pH falls below 8. Always maintain pH between 8-9. New bath should be prepared once in week or once in 15 days, depending on the work load. PRECAUTION : 1. Since the product is alkaline in nature always wear PVC/Rubber gloves while handling or working with this product. 2. Any splashes on skin or eyes should be flushed off with plenty of water and thereafter immediately consult physician. 3. Use of eye goggles and apron is recommended. PACKING : 15 Kgs & 50 Kgs.