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Fenzelit flexible bellows and expansion joints.


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¿¹¸¦ µé¸é :

  • Bolster(¹Þħ´ë) : mineral wool, ceramic wool, silicate wool°ú °°Àº ±×¸®°í ¶ÇÇÑ stainless steel  wire-cloth
  • ¿ì¸®ÀÇ ±âÁØ¿¡ µû¸¥ Pipe-clamps
  • back-up(º¸¿Ï) flange, duct flanges¿Í metal deflector plates(±Ý¼Ó º¯·ù±â ÆÇ) °ú °°Àº steel ¼ººÐ
  • Á¢Âø¼ºÀÌ ÀÖ´Â, 400/1000 ŸÀÔµé, hypalon, neoprene, silicone°ú ºÒ¼Ò°¡ ÷°¡µÈ °í¹«
  • ÄÚÆÃµÈ ¹°Áú°ú seals

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ÀÌ ÀÚ·á´Â frenzelit expansion joint Ä«´Ù·Î±×¸¦ ¹ø¿ªÇÑ °ÍÀ̸ç Design examplesÀº Ä«´Ù·Î¸¦ ÂüÁ¶ÇϽʽÿÀ.

 

Material characteristics


The purposeful combination of different material properties provides for and optimum solution both technically and economically. High-grade and expensive special materials are used only where it is a matter of enhanced safety or where loads are extremely high. Otherwise the combination possibilities are determined by the resistance of the materials to constant and peak temperatures, chemicals and mechanical stresses. 

The material make-up of Frenzelit expansion joints is based on the following materials

Polyester fabric

Carrier fabric having high strength and abrasion resistance applicable up to 150 degr. C

"novaTEX" made from aramide fibre

especially high strength, abrasion and friction resistant, good resistance to chemicals

"isoGLAS"

low-cost substitutes with temperature resistance up to max. 450 degr. C 

"isoTHERM 800"

from finished filament yarns, reinforced with stainless steel wires. Resistant to temperatures up to max. 800 degr. C 

"isoTHERM 1000"

increased resistance to temperatures owing to chemical conversion of the 6m fine mineral fibres

Silicate fabric

temperature resistant to in excess of 1000 degr. C, outstanding resistance to chemicals

 

 Lamination of the material layers

The layers of the expansion joint in front of the sealing foil serve mainly to protect it from extremely high temperatures.

It is only in vacuum that the material's tensile strength is subjected to stress.

Foils embedded between the fabric layers act as actual sealing elements and also have to withstand the temperature and medium load.

The qualities available extend from neoprene (90 degr. C) to stainless steel (600 degr. C).

The main function of the external fabric layer is to withstand the internal pressure' a coating protects if from mechanical damage and aggressive environmental influences.

Various quality grades of the fabric coatings are produced with special machinery. Only in exceptional cases does the coating have a sealing function. For the majority of Frenzelit expansion joints, the individual layers are glued together only at the flanges.

This ensures unhindered movement and guarantees high flexibility. In some cases however, it may be necessary to apply adhesive on all layers covering their entire surface area.

 

 Pattern carpenter's shop

In the case of simple types of expansion joints the layers of material are laid upon accurately dimensioned wood frames.

All complicated forms require and original sized pattern which is individually produced to the given measurements from wood or polystyrene in our own carpenter's shop.

 Survey of types

All possible expansion joint types are shown on pages 10 and 11. The important distinguishing features are.

  • type of flange (across page)
  • shape of the centre section and
  • design of the passage (vertical columns)

Even where the drawings show only the circular expansion joint diameter, all types can of course be produced with rectangular passage or with passages which change from circular to rectangular.