Keeping the pace with latest technology CEE DEE Vacuum Equipment Pvt. Ltd. is now technically collaborated with MX Systems UK to provide the cutting edge technology of impregnation in Asia.

CEE DEE VACUUM in association with MX Systems UK presents the new Auto-Seal system representing possibly the most significant achievement in casting impregnationeven eclipsing the development of PC504. 'the first thermal curing methacrylate sealant' in 1976 and the 'MX Recycling System' in 1989. Both of these breakthroughs were developed by the same technical team that have now invented the Auto-Seal system.

The system has only one chamber, within which the complete impregnation process is carried out automatically. Traditional impregnation systems require four different process stages; impregnation, drain, cold wash and hot cure, five including dehydration (oven drying of damp castings before impregnation). Previous developments in front load technology have reduced this to two to three modules, but no other system can carry out the entire impregnation process in a single chamber!

The benefits are significant. There is no need to move the basket of parts through a series of tanks, manually or automatically. Exposure to fumes and chemicals that enter the workplace during this transfer are eliminated. There are significant floor space savings. The impregnation system is no longer banished to the far end of the factory, and can now be located within a manufacturing cell alongside leak testing and other production processes. Work in progress and work handling is dramatically reduced.

The system is also less complicated and less expensive than traditional impregnation equipment. Sealing performance is better than other systems, sealing a MIL STD Aluminium test ring 100% every time. The number of chemicals has been reduced and the recycling rate has increased. There is no trade effluent!

The above consumption figures are estimated and based on an impregnation system with an output of 0 1.2m/1 ton of castings per hour, equivalent to a 'B' size Top Load system with a basket measuring 7OOmm x 700mm x 700mm processing four loads per hour or a Front Load system with a capacity of 400 mm x 400 mm x 400 mm and processing 12 loads per hour, each operating on a single 8 hour shift

A8400 is the beginnings of a row generation of impregnation sealants. AS400 supersedes MX2, which was developed in the late 1980's to provide higher levels of searing performance whilst also being the first impregnation sealant to recycle from the cold wash water. The drawback with recycled MX2 is that it requires frequent chemical controls end additions to maintain balance end performance. In contrast, recycled AS400 sealant retains the same properties as fresh sealant without the need for controls or additions, This is achieved by eliminating the cold wash, end associated additives, and instead recycling the sealant straight from the hot cure.

The MIL Standard Aluminum Test Ring has long been the benchmark for impregnation sealant performance. AS400 is the only sealant that will retain a perfect zero when an impregnated MIL Standard Aluminium test ring is 0 subjected to the 200 C, 24 hour test, from a production system With the elimination of the cold wash stage, there is no 'wash out' of sealant Item surface porosity when using AS400. This has been a serious problem with all other thermal curing impregnation sealants.

With traditional impregnation systems, the cold wash cycle is a compromise where components are either subjected to sealant 'wash out' due to excessive washing, or are net washed thoroughly enough and cured sealant is left in blind and tapped holes.

AS400 has no cold wash cycle. The components enter the hot cure solution directly after impregnation and are immediately 'surface sealed'. This permits highly effective washing of all component surfaces, including blind and tapped holes, without suffering washout from the porosity.

AS400 recycles directly from the hot cure water. The hot cure water contains additives that prevent polymerisation of the sealant in the hot water while allowing rapid and complete polymerisation in the casting. There is also virtually no loss of sealant into the hot cure water, resulting in complete recovery of the sealant formulation and every high recycling rate.

A new sealant recovery and water treatment system has also been developed to keep the hot cure solution clear at all times and provide an infinite bath life. Impregnated castings will always exit the system as clear as when using a fresh tank of hot cure water.

The new Auto-Seal system is 'effluent-free', having no wastewater from either a cold water wash or hot water cure tank. With no need for solution disposal, the system can be maintained in continuous operation, eliminating downtime and removing effluent charges and re-heating costs. The system is really 'environmentally friendly'. Most impregnation systems can be converted to benefit from As400. A site survey will be required to advise equipment modifications or additions. The sealant in the autoclave will have to be replaced, however the payback period will be fast.

AS400 has been tested in a full production environment for over two years. The cured sealant properties are the same as for MX2, which means thatAS400 adopts the same approvals.

Impregnated MIL Standard Aluminium Test Rings achieve a 'perfect seal' when subjected to the following tests :

US Navy MIL I 17563B Class 1 and 3
Underwriter's Laboratory Inc. MH 16455
Lloyd's Reg/Ship. MAT/05N1002
WRAS (water quality) approved BS6920:1996

Ford, General Motors, Chrysler, Hyundai, Honda, Volkswagen, Toyota, Nissan, Perkins, BMW, Renault, Fiat, Bosch, Cummins, Citroen, Rolls Royce, Lucas,Peugeot, Caterpillar, Rover.

Seeing, (AWAC). British Aerospace, BAE/GW/374, Bundesamt Fur Wehffechnik Und Feschafhing ML 8030-010.

In 1946, Percy Young started Industrial Impregnations Limited, the first casting impregnation company to be established in the UK. Percy began sealing castings with phenolic resins and later introduced polyester impregnation sealants.

In 1967, Percy's son, Peter Young, started Ultraseal Limited, later to become Ultraseal International Limited. In 1976, Peter developed PC504, the first thermal hot water curing methacrylate impregnation sealant. PC604 was patented around the world and set the standard for modern day impregnation systems. In 1989, Peter developed the MX Recycling System, the first system to recover and recycle sealant from the cold water wash tank of impregnation systems!

In 1998, Peter Young started MX Systems International Limited, and developed the new Auto- Seal system, which eliminates the cold water wash tank and recycles the sealant directly from the hot water cure tank. Auto-Seal outperforms all previous sealants, significantly reduces operating costs and has no trade effluent. In 2001, Peter Young handed MX Systems over to his three sons, Stephen, Michael and Paul who, together with Dr. David Pawson, are now working on the next generation!

MX System's sister company MecWash Systems was established in 1993 to develop a new range of aqueous cleaning and degreasing systems for metal components, with particular reference to solvent replacement and environmentally friendly systems. Cee Dee Vacuum are able to supply a unique and comprehensive range of compact, high performance and environmentally friendly systems for cleaning and degreasing, casting impregnation, surface treatment and recycling of process solutions to a wide customer base in the aerospace, automotive, engineering and foundry industries worldwide.