Kalbond is a premium nickel-chromium ceramic alloy has been engineered to achieve good bond strength with all types of medium grain and fine grain porcelains. Kalbond’s unique beryllium free formulation produces superior properties and provides the attributes you need to create aesthetic restorations.

With excellent melting and casting fluidity sharp, delicate margins and consistently reliable castings are easily obtained. The combined yield strength 340 MPa / mm2 and a hardness rating of 200 Hv 10 Brinell gives Kalbond tremendous resistance to clinical wear and deformation. Superior mechanical strength permits the design of thin wall copings and thin inter-proximal connections; greater strength without bulk.

Working Instruction

Spruing: For large casting we recommend the bar technique; main bar 5.0 mm, feeder sprues 4.0 mm, connectors 3.5 mm. For single crowns and small bridges use direct method (without bar). The sprue configuration must allow the melt to flow into the mould cavity without any abrupt changes in direction. The crucible former and sprue connections must be attached with care to insure that the melt is not restricted when flowing in to the mould. When attaching sprues, insure that the lowest point of the crucible former is approximately 3-4 mm above the highest part of the wax pattern.

Investing – Burnout – Preheating: Use a phosphate-bonded investment. Before positioning, ensure that a space of at least 5.0 mm exists between the sleeve and outermost part of the wax pattern. Then follow the instruction manual of the investment manufacturer. Carbon containing investments must be heat soaked until all carbon is burned off.

Melting and Casting: KALBOND can be melted with a blowtorch or in a high frequency induction furnace. Only use ceramic crucibles for both heating methods. The use of melting powder is not recommended.

High frequency furnace: Place the casting ingots into the preheated crucible and, using the highest power setting, heat until all the ingot shavings have coalesced, release the centrifuge arm. Oxide skin has to be preserved.

Blowtorch heating: After the ingots have coalesced releases the centrifuge arm. Oxide skin has to be preserved. After casting remove oxide whiskers from crucible and clean the crucible.

Warning! Overheating of the melt causes roughcasting surfaces.

De-flasking – Finishing – Pre-treating the Metal Coping: Grind with aluminium oxide burs, sintered diamond burns or hard metal grinders. In all cases the burs must be used only for this alloy. After trimming, sandblast and finishing the coping, should either be boiled for 10 minutes in distilled water or thoroughly steam cleaned. At this stage the coping should only be held with tweezers.

Porcelain Bonding: The opaque porcelain is applied to the blasted and cleaned metal in two firing steps. The first layer is a thin coating, opaque layer (wash layer) for ensuring the bonding. The second layer is a thicker coating, opaque layer.

Follow the porcelain manufacturer’s directions for further processing.

Pre Soldering if required: Roughen the soldering surfaces with fine corundum. Join the crowns together with wax or acrylic and invest in soldering investment. Boil out. Streak the surfaces to be soldered. Pre-dry the soldering block and preheat to 600 0C (1112 0F). Reapply flux and place onto the soldering device. Streak the framework with flux on the piece of solder and the crevice must be heated with hot flame until the soldering site is completely covered. Then heat with the flame until the solder flows.

Important: Being a Ni Cr Mo based alloy, it should not be used for patients who are allergic to Nickel