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Licomont EK

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					Licomont® EK 583
The plasticizer for metal and ceramic
injections




                                                                       Oxide ceramics and silicates
                                                                                                 Edition: 05/09




                                          Simple production of the injection moulding compound
          Example
      “Aluminium oxide”                   E.g. At 130-160°C in a heatable kneader, with binder present in full amount, add powder in doses or
                                          on a twin screw extruder (rotating in the same direction): zone heating 100-140°C; hot-cut. Dose the
approx. 15% Licomont EK 583               binder and ceramic powder in two product flows into the feed opening of the extruder. This results in
   / Licomont EK 583 G *)
                                          dosable, homogeneous granules.
approx. 85% aluminium oxide*)
   *) proportions   according to powder   Caution: Affected by water. Keep in a dry place until ready to mould.



      Raw materials:
 Suitable powders based on
 aluminum oxide, zirconium
     oxide or porcelain.
                                          Ready to mould compounds containing binder Licomont EK 583 / Licomont EK 583 G are available
                                          by feedstock-suppliers.
            Binder:
                                          eMBe Products & Service can help.
       Licomont EK 583,
if need be in combination with
      Licomont EK 583 G                   Injection moulding
 recommended when using fine grained
                powders                   On a modern, computer-controlled injection moulding machine with wear-protected cylinder and
                                          screw.
                                          Setting: zone heating 100 – 160°C. Mould temperature: 50 – 60°C.
                                          Mould: e.g. two-plate design, temperature-controlled with water.

                                          Moulding compositions made with Licomont EK 583 / Licomont EK 583 G are mouldable with a low
                                          counter pressure.

                                          Injection moulding compounds containing Licomont EK 583 / Licomont EK 583 G can be
                                          mechanically reworked, e.g. to remove sprue by milling, to subsequently create screw thread.

                                          Machine manufacturers can also provide further assistance with respect to injection moulding.
                    Removal of the binder in solvents
                    ... when moulded parts tend to deform

                    With geometrically critical parts prior removal of the moulding´s binder in water is
                    preferable. To do this, the mouldings are stored at least 1 hour in water. The pore
                    structure of the moulding surface opens up and part of the binder is removed. This
                    step can be carried out in an open water container without additional safety
                    precautions. The dissolved binder components are biodegradable in sewage
                    treatment plants and absorbed in the waste sludge.
                    When water is a problem, ethanol and acetone can be used as suitable solvents.
                    Caution: Acetone and ethanol are inflammable!
                    eMBe Products & Service can help you design a tailor made debinding device.

Thermal debinding
... residue free removal of binders

The preferred equipment is a forced-air oven rated for temperatures ranging from 20 - 300°C with a
control accuracy of +/- 5 K. The hydrocarbon-laden exhaust air should be subjected to a final
cleaning (catalysis or post-combustion). Please keep the HC-concentration below 30 g/m3 air.

Typical temperature sequence:

80°C -- 20h -- 280°C -- 1h -- 280°C -- 3h -- 80°C

Times and temperatures need to be adapted on demand.
Licomont EK 583 / Licomont EK 583 G decompose at > 160 °C.

                    Furnaces
                    ... moulded powder becomes a component

                    Ideally, debinding furnaces and sintering furnaces should be sized so that the firing
                    base substrate can be used in both appliances. Thus the furnace load doesn´t need
                    to be moved and can remain on the base. For environmental reasons, a linking of the
                    exhaust air streams with the exhaust gas cleaning is recommended.

                    Typical sintering cycle for aluminium oxide:
                    100°C -- 10h -- 800°C -- 5h -- 1670°C -- 1h -- 1670°C -- 2h -- 100°C.
                    Shrinkage: approx. 15%. We can recommend suitable combustion furnaces on
                    request.

If you have any further questions about powder injection moulding, do not hesitate to contact us!

eMBe Products & Service GmbH
Contact: Michael Bayer
Gemeindewald 7, 86672 Thierhaupten, Germany
phone.:     +49 8271 421988-3
fax:        +49 8271 421988-4
servicepoint@embe-products.com
Disclaimer:
The data contained in this Usage Information are based on our current knowledge and experience. All formulas and
recommendations are non-binding. Every user of our products is responsible at all times for the observation of legal
stipulations, especially those relating to patent rights and accidents insurance. It is the responsibility of the user of the product
to ensure to his satisfaction that the product is suitable for the intended purpose and method of use. We do not accept
responsibility for any harm caused by the use of this information. In all cases, our general conditions of sale apply.

                                                                                 Copyright 2008 eMBe Products & Service GmbH
                                                                                       Licomont ®: Registered brand of Clariant

				
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