Higher quality and faster delivery times Applications for technical ceramics

The range of possible uses of technical ceramics is almost infinite. In many cases ceramic materials are used in place of metal components, since these possess high mechanical strength, low wear and a high corrosion resistance.

With their components made of technical ceramics, CVT cover a wide range of applications and industries. Depending on the intended use, the suitable material is selected for manufacture in order to make possible optimal use of the component. We always place great value on offering our customers sustainable, long-lasting solutions at an attractive price


Welding technology

Technical ceramics are ideally suited to use in welding technology. Components made of zirconium oxide, for example centring pins, are particularly suitable due to their toughness and low susceptibility to wear during welding processes. In automated production processes in particular, components made of technical ceramics offer a significant cost advantage, since the production results are of higher quality and the running times of the machines are significantly longer.

CVT ceramic products for welding technology applications:

  • positioning pins
  • centring mandrel for support clamp
  • centring pins
  • gas nozzles
  • ceramic dowels
  • pressure pieces
  • welding rollers
  • sealing head insulators
  • weld backing
  • solder backing

Testing technology

So-called End of Line (EOL) testers are becoming increasingly important in the manufacture of electronic products, since a 100% testing of the manufactured components is necessary in the automotive/supply industry.

Both the horizontal and the vertical position of each individual pin needs to be tested if, during the subsequent process, an electrical connection with other assemblies is to be established by automated means via these plug connectors or if the component needs to be installed in a housing with a precise fit. If the pins were to be bent through mechanical influences prior to installation, automated assembly would no longer be possible.

Components made of technical ceramics provide the optimal solution here. While conventional components made of plastic are very susceptible to wear and therefore have a short service life, and the minimal size of the components no longer allows the necessary tolerances to be complied with, technical ceramics fulfil these requirements perfectly. CVT’s test plugs, manufactured to the customer’s specifications, are technically pure, resistant to wear and high-precision and stable in form, also in the miniature range. 


Textile technology

This industry was always a pioneer in terms of innovation. The benefits of wear-resistant ceramic materials was quickly recognised and widely used within this field in order to cope with the abrasive loads on components during the processing of textile yarns. Delicate yarns which slide over a surface at high speed require low and stable friction, achieved through the use of finely polished functional surfaces. Even minor irregularities place tension on the yarns, sometimes even snapping them. Over 100 years ago, glazed porcelain was already being used as a yarn guide, before being replaced by the even more efficient aluminium oxide or zirconium oxide. These modern materials continue to harbour untapped potential for the processing of technical textiles.

CVT ceramic products for the textiles industry:

  • yarn guides
  • cutters
  • friction discs
  • other components  

    Fluid technology

    In the field of fluid technology, the key requirements placed on components are corrosion resistance, resistance to wear, resistance to aggressive media and a low specific weight. Components made of technical ceramics possess these properties and are in addition also biocompatible, which means they can also be used in the foodstuffs industry and in medical technology.

    CVT ceramic products for fluid technology applications:

    • plungers
    • pistons
    • cylinders
    • slip ring seals
    • pressure packages
    • valves 

    Forming technology

    In forming technology, technical ceramics are used to improve productivity, since the service life of conventional tools was no longer proving adequate, given that a tool change interrupts production, and moreover their tendency towards adhesion is also problematic.

    In the field of sheet metal forming too, high-performance ceramics are, for economic and technological reasons, an interesting alternative to tool steels and carbides. Ceramics reduce the necessary forming forces and produce a better surface in many sheet metal materials.
    Due to their high resistance to wear, the service life of ceramic tools is several times that of conventional tools.

    In this field, silicon nitride offers numerous possibilities as a material: a high resistance to temperature shock, resistance to wear, electrical insulation and lubricant-free working.

    CVT ceramic products for forming technology applications:

    • forming and feed rolls for rolling metals
    • dies for forging (extrusion)
    • drawing dies / drawing cones for wire drawing
    • straightening units for wire clamping
    • alignment jaws


    • expanding mandrel
    • dishing die
    • seaming roll
    • welding rollers
    • guide bars

    Wooden materials & paper industry

    Chips and dust cause a considerable amount of wear during the processing and working of wood and paper. Due to their hardness and corrosion resistance, technical ceramics make the ideal material.

    CVT ceramic products for the wooden materials & paper industry:

    • ceramics in shredding machines
    • pipes for removal of chips
    • limit stops
    • roll noses
    • pressure plates
    • scrapers

    Mechanical engineering

    Ceramic components need to meet different requirements in mechanical and plant engineering applications. These include high mechanical strength, resistance to wear, thermal or electrical insulation properties and thermal conductivity. However, the requirements placed on the technical ceramics can also be very complex.

    CVT can call on many years of experience and competence. We can offer the right component for any application and are happy to work together with our customers to develop new solutions for challenging applications.

    CVT ceramic products for mechanical engineering applications:

    • bezels
    • bearings
    • seals
    • pipes
    • flow meters
    • slip rings
    • bearings
    • precision balls
    • grinding balls
    • gauges
    • protective screens
    • washers
    • plates
    • rings
    • fill level indicator
    • sockets
    • pressure pieces
    • slide shoes
    • limit stops
    • mountings
    • ceramic steel band guides

    Induction technology

    Technical ceramics are used in a very wide variety of applications in the field of induction. Silicon nitride is used most often as a material, since this material is resistant to wear, electrically insulating and non-magnetic. In addition, it has an enormous resistance to temperature change.

    CVT ceramic products for induction technology applications:

    • welding rollers
    • workpiece holders
    • slide shoes   

     

     


    Foodstuffs industry

    Production processes for foodstuffs place demanding requirements on the components of the production machines. Since the machines usually have very high running times and the processed foodstuffs react differently with other materials, the components need to be biocompatible, food-safe, low-wear and resistant to a wide variety of liquids. CVT’s technical ceramic components made of zirconium oxide provide the reliable solution, minimising production downtimes due to technical defects in components.

    CVT ceramic products for the foodstuffs industry:

    • dosing sliders
    • dosing units
    • valve needles
    • valve seats
    • guides
    • grippers
    • limit stops
    • forming tools
    • forming rolls
    • seaming rolls
    • seal head insulation

    Further applications

    Foundrytechnology requires materials which are temperature-stable. Also these materials may not react or interact with the melt. Such foundry applications require high-quality materials for moulds and mould elements, but also equipment components for machines and plants.

    Packaging technology uses ceramic components for filling goods and for sealing the packaging. In many cases the packaging is sealed by means of welding (covers / foils, e.g. coffee pads) or by sealing the container with a foil (yoghurt pots).

    Cutting is a process which involves separation of the workpiece without the formation of chips. Tools include cutting blades and shears. These tools make use of the resistance to wear of ceramic materials in order to withstand the abrasive wear, but also thermal and chemical stresses resulting from the material which is to be cut.