Wolin sprayingsystems offer several advantages:

• Shorter cycle time by means of mask spraying tools

• High air flow for sprayig and blasting

• High performance servo drives

• Absolute positioning

• Corrosion-proof guide rails

• No deviations in spraying parameters

• Flexibility for different spraying technologies

• Short set-up and maintenance times

Wollin spraying machines use control panels. The PC3 Process Control was developed for use in die-casting foundries, and enables efficient use and operation of ESM lubricators.

There are 2 types of Wollin die spraying machines:

Wollin ESM spraying machines

Wollin ESM lubricators are designed for presses from 160 up to 6200 tons. The harsh working conditions in the foundry were fully taken into account during the design phase. ESM lubricators are supplied in both single-axis and 2-axis versions. They have the option of using 2 different release agents (traditional water-based and concentrated). They use a minimum of 4 to a maximum of 8 lubrication circuits and are always equipped with 2 separate high-pressure blowing circuits. The weight of the lubrication head can range from a minimum of 45 kg to a maximum of 200 kg.

Wollin ESMT lubricators

The Wollin ESMT lubricators (telescopic version) are designed for presses from 560 up to 6200 tonnes and are a viable alternative if there are problems with low sheds or overhead travelling cranes, or other issues concerning the height of the equipment. They have the possibility of using 2 different release agents (traditional water base and concentrate). They use a minimum of 6 and a maximum of 8 lubrication circuits and are always equipped with 2 separate high-pressure blowing circuits. The weight of the lubrication head can range from a minimum of 130 kg to a maximum of 280 kg.

Wollin offers the possibility of using lubrication robots. This type of application gives the possibility of many customisations according to production requirements, so it is advisable to ask us for advice to define the most suitable system. Wollin's robot lubrication systems are available in 2 versions and different sizes depending on the application and size of the die-casting machine.

Efficient Spray Robot Systems PSR FS with 'linear' lubrication heads

• PSR 1 FS for diecasting machines from 80 to 560 ton presses

• PSR 2 FS for diecasting machines from 160 to 2000 ton presses

All lubrication heads are equipped with 2 additional circuits for high-pressure blowing (for drying and cleaning the mould in the shortest possible time). Lubrication heads for PSR systems can be extended using standard modules, although the maximum number of nozzles cannot be exceeded.

Efficient Spray Robot ESR Systems with Mask Lubrication Heads

Efficient Spray Robot ESR systems are available in 3 different sizes:

• ESR 2 diecasting machines from 160 to 1000 ton presses

• ESR 3 diecasting machines from 560 to 2000 ton presses

• ESR 4 diecasting machines from 1600 to 5500 ton presses

These systems offer the possibility of using mask spraying tools and conceptually follow the same technical solutions used in ESM Linear Spraying machines.

Modular spraying tools heads PS16 - PS25

Modular spraying tools heads provide multiple advantages in the die-casting cycle:

• Quick change

• Selective release agent application

• Short spraying time

• Better quality of the castings

• Reduction of the scrap castings

• Reduction of the release agent consumption

• Environmentally friendly

• All modules can be re-used

With this method, our customers have achieved considerable cost reductions and increased productivity:

- Easy assembly (Modules for changes in length, width and height).
- Flexibility (Fast change-over times, Flexibility ensured by free configuration of spraying strips, Configuration and optimisation for even complex moulds in a short time).
- High Performance (High flow rates of release agent and air for nozzle supply).
- Process stability (High process stability and reproducibility due to permanent fixing of all mould-specific adjustments).
- Economical (Thanks to the standard PowerSpray system modules, all parts can be reused).

ECO+ SPRAY - microspray technology

The presence of new concentrated or oil-based release agents on the market required the development of a technology that would allow their precise application in minimum quantities. ECO+ SPRAY technology is the result of years of research in this regard and allows highly flexible implementation on a wide range of mould types:

• WaterFree application. Without the use of water to cool the mould, applicable to moulds with excellent temperature control or thin-walled aluminium and magnesium castings

• WaterLess application. Normal release agent is used to cool the mould only the minimum necessary for the subsequent application of the concentrated or oil-based product

Advantages of ECO+ SPRAY technology:

• Cycle time 20%

• Mould maintenance costs 40%

• Up to 100% water saving

• Over 50% compressed air savings

• Up to 200% mould life time

ECO+ SPRAY technology is based on the use of DDV nozzles (with a volumetric pulse system), which allow the application of quantities ranging from 0.0125 to 0.119 ml. DDV nozzles are compatible with the modular PS16 and PS25 lubrication heads, which guarantees their ease of application and use.

Original spare parts and technical service

GEFOND manages exclusively for Italy the after-sales service with particular reference to technical assistance and spare parts. We provide our customers with a team of top-level technicians able to intervene promptly and effectively, as well as a spare parts warehouse, located in Milan, stocked with the main components normally used by foundries.