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Demcar > Passivation and Blasting

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Passivation and Blasting Services

The company is based in Galati, Romania, with a total area of approximately 25,000 sqm, consisting of warehouses of about 4,500 sqm, offices, production and warehouses.
The company currently employs about 100 people, all of whom are highly trained specialists, experienced and motivated by their achievements and prospects.

In 2019, Demcar invested 4 million Euros in a 3,000 sqm hall, a fully automatic blasting and passivation plant for steel sheets and profiles, 4 new cranes of 20 tons each with 4 new magnetic beams.
In 2023, Demcar will invest in a second hall of 3.000 sqm, similar to the first one, with 4 new cranes and 4 new magnetic beams and another blasting and passivation plant, so that we can become an important Steel Service Centre both for the Romanian market and for other countries.

Rosler blasting and passivation plant

Equipment and way of working:

This plant consists of the following equipment, connected together:

The pre-heater is designed to bring the temperature of the metal to an optimum value so that the blasting process can be optimally carried out. It can heat up to a temperature of 280°C.
The material then automatically enters the blasting station on a roller bed, which is equipped with 8 turbines, 4 above and 4 below the blasting material. The turbines have a power of 22 KW and are equipped with electric motors with frequency converters to set an adjustable speed of the turbines. They ensure excellent blasting quality in compliance with all existing quality standards.
After blasting, the material is driven by the roller system into the dust removal and cleaning area to ensure a clean surface of the material before painting.
The painting plant is fully automated with 8 painting nozzles. The plant is equipped with 2 independent painting systems.
After painting, the material is automatically driven on the roller bed into the drying area, so that the material leaves the plant completely dry.

Description of production lines and capacities:

1. Workpieces: steel sheets and profiles;
2. Workpiece dimensions:
  - minimum height: 4 mm
  - maximum height: 500 mm
  - maximum width: 3.000 mm
  - maximum length: 14.000 mm
3. Maximum operating speed: 4 m/min.
4. Blasting standard: SA 21/5 according to DIN-EN-ISO 8501-1
5. Dry paint layer thickness: 15-18 μm, according to shopprimer Technical Data Sheet
6. Unități de control al turației variabile pentru motoarele de conducere a turbinei pentru obținerea unei game largi de rugozitate după sablare.
7. Tonnage productivity: 61 tons/hour.
8. Maximum quantity processed in 24 hours: 1,464 tonnes for a 12 mm thick and 3 m wide sheet.
9. Maximum quantity processed in one year with one plant: 320,000 tonnes of board.
10.Maximum quantity processed in one year with two installations: 640,000 tonnes of board.

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Any changes and improvements can be made at the customer's request.