https://www.powtech.de/en/ausstellerprodukte/powtec19/product-10160768/conidur-slotted-hole-sheets

Slotted-Hole Sheets have oblong openings, achieving a larger open area than with Fine-Hole Sheets. The scaly roughend surface of the Fine-Hole Sheets can be smoothed by rolling. This will change the hole shape, but not the conical form. Grinding of the surface will further smooth the sheet.

To get a larger open area we have developed on the basis of our fine perforation slotted hole sheets. The length of the slotted hole always runs parallel to production width. To increase length and width as given on page 12 and 13 the sheets can be joined together by roll resistance welding. Sheets with an initial thickness of 1.0 mm upwards can also be butt-welded dependent on pitch of holes. Manufacturing tolerances for openings and other dimensions are dependent on manufacturing process and ingoing material.

Screening, Separation, Fluidisation

HEIN, LEHMANN, worldwide represented by a multiplicity of subsidiaries and representations, is well-known as a reliable and competent partner. With our KNOW-HOW based on experience gained over the last 100 years HEIN, LEHMANN has set standards in the filtration, screening and separation technique.

According to application, CONIDUR® Fine and Slotted hole Sheet and Wedge Wire Screens are used as working screens in continuously and discontinuously working centrifuges, in filter and mill application and in fluidised bed units for drying and cooling. The CONIDUR® gas / air distribution deck finished with specified pressure drop is an essential component of the fluidised bed unit.

The combination of Wedge Wire Screen cylinder as backing screen and CONIDUR® hole sheet as working screen is mainly applied in the filter technology. So, these screen cylinders for filtration are used from inside to outside or reverse.

Due to production Wedge Wire Screens are differentiated in welded Wedge Wire screens, CORIMA, or looped Wedge Wire Screens, RIMA®, RIMETTA®, and ULTRA RIMETTA®.

Modern machines and highest accuracy at production ensure our high quality standard. Our technically different finishing enables an exact adjustment to each individual application of the customer.