Die-casting machines – Eisenmann Druckguss GmbH

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Eisenmann Druckguss GmbH Background

For more than 80 years, Eisenmann Druckguss GmbH, based in Villingen, Germany, has specialized in manufacturing high-precision components made of zinc and aluminum. With a team of 220 dedicated employees, the company supplies premium-quality parts and innovative solutions to leading automotive manufacturers and a wide range of customers in other industries.

Production Setup

Among the core machinery is a Frech hot-chamber die-casting machine, model DAW 20T. The hydraulic system operates with 230 liters of Petrofer Ultra Safe 620 – a water-glycol mixture.

The Challenge

During the die-casting process, the hydraulic system becomes increasingly contaminated by particles resulting from operational wear and tear. This contamination causes variations in piston speed, which in turn affects the consistency and quality of the cast parts. These fluctuations can lead to product defects, increased downtime, and reduced overall efficiency.

Testing the GreenOil Filtration Solution

To address this challenge, a GreenOil filtration unit was installed and tested for its ability to clean and maintain hydraulic oil purity. Oil samples were collected both before and after the test period for laboratory analysis.

Customer Comments – Eisenmann Druckguss GmbH

“We are rather satisfied with these results. Only a reliable oil filtration at the die-casting machines can maximize a process reliability even so promises to optimize economic process”.

Mr. Alper Atil (Head of Maintenance)

Wear Metals (mg/kg)

Element	09.06.2020	19.06.2020	Change
Iron (Fe)	42	1	↓ 41
Tin (Sn)	21	17	↓ 4
Aluminium (Al)	2	1	↓ 1
Nickel (Ni)	2	0	↓ 2
Mangan (Mn)	1	0	↓ 1
Copper (Cu)	8	4	↓ 4

Contaminants (mg/kg)

Element	09.06.2020	19.06.2020	Change
Silisium (Si)	10	3	↓ 7
Calium (K)	42	35	↓ 7
Natrium (Na)	45	30	↓ 15
Lithium (Li)	2	0	↓ 2
Titan (Ti)	1	1	–
Wolfram (W)	10	0	↓ 10
Cobalt (Co)	2	1	↓ 1
Zinc (Zn)	56	2	↓ 54

Solid Particle Load

Metric	09.06.2020	19.06.2020	Change
Solid Particles (SUM) (mg/kg)	46.4	29.5	↓ 16.9 (–36.4%)

Eisenmann Druckguss GmbH – Precision Casting Meets Clean Oil Technology

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