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Vomat Keep coolant clean for a long time

Editor: Steffen Donath

KFA 1500 sets clear standards for large scale industrial production scenarios.

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With the KFA 1500 filtration system, the machine manufacturer Vomat, provides tool manufacturers and re-grinders, with a highly efficient, low-maintenance ultra-fine filtration system that promises optimum quality even in large batch production environments.
With the KFA 1500 filtration system, the machine manufacturer Vomat, provides tool manufacturers and re-grinders, with a highly efficient, low-maintenance ultra-fine filtration system that promises optimum quality even in large batch production environments.
(Source: Vomat)

The larger the batches in tool grinding and the more grinding machines are involved in the process; it becomes more worthwhile to employ efficient central filtration systems or large filters for cleaning contaminated grinding oils or aqueous coolants as offered by filtration specialist Vomat in Treuen\Germany.

Vomat offers systems that can be individually adapted to customer-specific production needs. One example is the compact system KFA 1500. The KFA 1500 is a ultra-fine filtration system for grinding carbide and HSS materials with a filtration capacity of 1,500 l/min. (397 Gal./Min.). The KFA 1500 keeps the cleaned coolant in the system for long periods and does so in an energy-efficient manner.

The selection of the right filtration system is an important aspect for success in tool grinding. Vomat (Vogtländische Maschinen- und Anlagentechnik) from Treuen is a specialist in filtration technology for cooling lubricants in the metalworking industry.

Vomat ultra-fine filter systems are available in various sizes ranging from 70 liters (18.5 Gal) up to large filtration or central systems with 960 or 1,200 liters (254 or 318 Gal.) flow capacity per minute.

In case filtration capacity requirements increase, when for example a host of grinding machines are to be supplied with clean oil centrally, then the large Vomat ultra-fine filtration systems come into play.

Steffen Strobel, technical sales manager at Vomat: “Tool manufacturers or re-grinders can also order Vomat filters, which can be scaled-up in 1,200 liter/minute (318 Gal.) increments. The large selection of modules and additional optional features allows for maximum flexibility.

“Our KFA 1500 compact system is a fine example of how economical ultra-fine filtration can work when grinding large batches. These systems can filter large amounts of dirty cooling lubricant at constant temperatures. The extremely cleaned oil can remain in the system for a long, long time.”

KFA 1500 for large tool lots

The tank system of the Vomat KFA 1500 consists of the dirty oil inlet tank, the clean oil tank and the disposal unit. The tank volume is 10,000 liters (2645 Gal.). The KFA 1500 filters with a cleaning capacity of 1,500 liters/minute (396 Gal./Min.)

Modern, low-maintenance and user-friendly technology ensures energy-efficient full-flow filtration, in which clean and dirty oil are separated 100 %. Modern high performance pre-coat filters (KFA 1500 foot print: 6610 x 2530 x 2620 mm (L x W x H) filter to NAS 7 for a very long time. This corresponds to 3 to 5 µm.

Steffen Strobel: “The KFA system filters and flushes as the need arises. This means that the backwash- cycle is initiated automatically and individually for each filter element, depending on the degree of contamination. Meanwhile, the other filter elements ensure a continuous supply of clean oil. This not only ensures that the filter and grinding oil can remain in the system for a very long time, but also that the system operates in a particularly energy-efficient manner. The fully automatic monitoring and control system of the KFA 1500 keeps energy and operating costs low.”

The cooling performance of the cold water cooling system of the KFA 1500 operates at 200 kW with a constant oil temperature of 24° in continuous operation. The temperature accuracy is within a tolerance range of up to +/- 0.2 K. This means that the grinding oils used have long life cycles. As an option, Vomat offers compressor - cooling systems with external condensers and high control accuracy.

Due to the use of pre-coat filters, there is no contamination of the swarf by any filter aids. The residual moisture of the metal chips is between five and 10 percent, and the recyclable material is disposed directly into a suitable transport container provided by the recycling company.

Thanks to the PLC control and software technology, remote maintenance of the KFA 1500 is also possible without any problems. A wide range of optional features make the Vomat KFA 1500 filtration system extremely flexible. The Vomat KFA 1500 can be adapted to a wide variety of work conditions and can be easily integrated into any workflow due to available optional equipment. E.g. there are various pre-filter systems (material-dependent) and drying units.

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