Chrome
MAR Chrome Pro IA
Description
MAR CHROME PRO IA is a specially formulated High Speed Functional Chromium electroplating process designed to be used with “Insoluble Anodes”. The high-speed capabilities are a function of the chemistry design, which allows higher current efficiencies. The system has the capability of processing at much higher current densities. The increase in the deposition rate is a result of the increase in the current efficiency.
The MAR CHROME PRO IA system, unlike the conventional catalyst systems, provides a stable electrolyte in an none conventional application.
The electroplated deposits from the MAR CHROME PRO IA system exhibit very shiny, bright and smooth surfaces. The micro-hardness of the deposit shows values in the 1,000 KHN100 range, with a micro-cracked count greater than 1,000 cracks per linear inch providing superior corrosion resistance. With these characteristics, there is a very noticeable increase in the wear performance of this deposit.
The MAR CHROME PRO IA plating system is maintained with a liquid additive which eliminates dusting and splash back from solid additions. The system consistency can be maintained using an amp-hour control system. Standard pretreatment cycles can be used as those in any hexavalent chromium plating systems.
WARRANTY AND DISCLAIMER: This information is based on our experience and is, to the best of our knowledge, true and accurate. MAR-Tech Holdings Inc. gives no warranty, expressed or implied and the products are sold upon condition that the purchasers will make their own tests to determine the quality and suitability of the product. Any information or suggestions are given without warranty of any kind and the purchasers are solely responsible any loss arising from the use of such information.
Recommended Operating Parameters
| MAR CHROME PRO IA | |
| Chromic Acid | 220 - 260 g/litre |
| Sulphate radical | 2.2 – 2.6 g/litre |
| Ratio | 75 – 120 |
| Temperature | 55°C – 65°C |
| Cathode Current Density Range | 30 – 154 ASD |
| Anode Current Density | 15 – 100 ASD |
| Plating Rates (approximate) | 31 amps/dm2 @ 60°C 1.3 µ/hr |
| 447 amps/dm2 @ 60°C 52 µ/hr | |
| 62 amps/dm2 @ 60°C 70 µ/hr | |
| 93 amps/dm2 @ 60°C 114 µ/hr |
Plating Solution Make-up and Conversions
New Plating Solution Make-up
A new make-up can be accomplished by the use of a liquid make-up solution, MAR CHROME PRO IA MU-L. This liquid contains 480 g/litre of Chromic Acid and the required amount of catalyst.
Using MAR CHROME PRO IA MU-L
- For each 100 Litres of plating solution: 50 litres of MAR CHROME PRO IAMU-L
- For each 100 USG of plating solution: 50 USG of MAR CHROME PRO IAMU-L
Dilute to volume with DI water.
Bring the solution to the correct level with DI Water.
Heat the solution to the operating temperature of 140°F (60°C).
At this time analyze the plating solution of sulphate. Add Sulphuric Acid to bring the sulphate content to 2.4 g/l.
Electrolyze the plating solution at 6 volts for 5 hours to form an equilibrium with all of the components.
PLATING SOULTION MAINTENANCE
The MAR CHROME PRO IA plating solution can be maintained using the liquid MAR CHROME PRO IA RL. The sulphate catalyst is maintained by analysis and adjustments are made with Sulphuric Acid or Barium Carbonate.
The liquid MAR CHROME PRO IA RL contains 480 g/l of Chromic Acid and the secondary catalyst. Additions can be made at a rate of 350 ml per 1,000 amp-hours using an amp-hour controller with a feeder pump.
EQUIPMENT
PLATING TANK
Steel tanks lined with PVDF, PFA or flexible PVC materials or other materials capable of withstanding the continuous exposure to the high concentration of chromic acid and temperature.
ANODES
Insoluble anode coated with an Iridium Oxide film is strongly recommended.
RECTIFIERS
Appropriate rectifiers with less than 5% ripple at 10% of the maximum output and sufficient amperage and voltage capacity is recommended..
HEATING AND COOLING
Titanium or TEFLON® covered heaters, heating and cooling coils and heat exchangers can be used. Steel or Stainless Steels must be avoided since they will dissolve in the chromic acid solution.
AUXILIARY EQUIPMENT
Ventilation that meets government emission standards should be used. Temperature controls and bus bars used in conventional chromium plating systems can be used. If heating is done using steam and cooling by water, electrically insulate these lines by using rubber connections.
HEALTH AND SAFETY
All of the MAR CHROME PRO IA compounds and the actual plating bath contain Chromic Acid. It can cause severe burns. Avoid contact with eyes, skin, and clothing. Do not inhale or swallow. Eye contact can cause severe burns or loss of sight. Use with adequate ventilation and proper protective equipment. Rubber gloves and chemical safety glasses are recommended safety equipment including NIOSH/MSHA approved respirators should be used, as necessary. Do not eat or drink while handling this product, and wash thoroughly after handling these materials. Consult the individual Material Safety Data Sheets (MSDS) of the MAR CHROME PRO IA system for complete information.
FIRST AID
Eye contact: Flush immediately with a continuous flow of warm water for 15 minutes. Call a physician for treatment for exposure to chromic acid immediately.
Skin contact: Flush thoroughly with water. Contaminated clothing must be removed and washed immediately before reuse. Chromic Acid in contact with organic materials, such as clothing will cause burns.
Inhalation: Remove the exposed patient to fresh air and consult a physician.
Ingestion: HARMFUL IF SWALLOWED. If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Call a physician for further treatment immediately.
STORAGE
The MAR CHROME PRO IA liquid is very stable. Storage between 10°C and 40°C is preferred. Prolonged storage at low temperature less than 5°C may cause solids to crystallize out of solution. Do not store in contact with organic or alkaline materials. Keep containers closed when not in use. Do not cross contaminate containers, always use clean pumps.
SPILLS AND WASTE DISPOSAL
Consult the MSDS’s for the MAR CHROME PRO IA plating system for complete information.
Always contain the spillage, soak up the solutions with an inert absorbent and never use paper. Scoop into a suitable container for disposal. Refer to the applicable provincial and local regulations for the current response information.
The waste generated from any spill of the MAR CHROME PRO IA products and the plating solution will contain levels of chromium in excess of permissible limits. Refer to your local and government regulations. These laws and regulations will determine the proper procedure for waste disposal.
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