Assembly line of fuel filter covers
In order to ensure high quality of fuel filters fully compliant with the quality standards applicable to filters included in primary equipment and, at the same time, to ensure an increase in the production capacity, a new modern production line of covers with soldered elements was launched.
The line allows for plastic forming of pipes, mounting of pipes and mounting of additional components in the filter bottom, for covering them with soldering paste and for permanent fixing of components by means of hard soldering. After the process of covering the surface with the copper based soldering paste by means of special dispensers and after the process of outlaying respective soldered components is complete, the process of cover soaking in extremely high temperature of 1100°C follows, this ensures permanent joint between the cover and the pipes, heater plugs and air vents. In order to achieve the required parameters of the joints, soldering takes place in the protective gas environment, and after cooling of the components, vacuum process of tightness testing follows. This applies to all items manufactured in one batch.
After the joints have been positively verified, in order to protect the manufactured bottoms against corrosion, they are electrolytically galvanized with zinc. Once this process is completed and the bottoms are dried, we are faced with semi-products that are further processed in the next production stages to finally render the ready made and free of defects filters.