MSDS
Instructions for use:
Dream Cast Chrome
Partial Denture Casting Alloy
Chrome-Cobalt
Processing Technique:
Investment:
Use investment recommended by manufacturers only for high heat Crhomium-Cobalt Partial Denture Alloy. Follow the manufacturer’s instructions carefully.
Torch Casting:
1- Multi-orifice tips are recommended.
2- Set gauges to 20 psi oxygen and 8 psi acetylene.
3- Light the torch; for better results allow the blue inner flame expand not more than 1/8” (3mm), and the outer flame approximately 1 ½” (38mm) from the torch tip.
4- Place sufficient alloy in the preheated crucible.
5- Heat the alloy uniformly. Cast immediately after slumping to avoid excessive burning.
Induction Casting:
Follow the manufacturer’s instructions; set the temperature to 2700ºF (1480ºC). When the metal has melted as one mass; release the machine immediately to avoid overheating.
Finishing:
1- Use thin cut-off wheels to remove buttons by cutting sprues close to the casting and trim remaining metal from sprues and shape with heavy cut-off wheels.
2- Use barrel shape stones to grind the surface of lingual and balatal bars, and shape the finish line areas on the upper cases.
3- Use inverted cone type stones to trim or grind tight areas.
4- Do not stone stippled surfaces, electro polish the high stone.
5- Casting should be ready for sandblasting and polishing.
Electro Polishing:
Use electro polishing units that are recommended for high heat Chromium-Cobalt Partial Denture Alloys. Follow the manufacturer’s instructions; remove the case from the solution and rinse thoroughly with running water; go over entire case and remove all surface marks with rubber wheels and points.
Welding & Soldering:
1- Clean by grinding or sandblasting the surface of the areas and then invest.
2- Thick areas should be ground to shape so that the top of the surface is wider than the bottom.
3- Adjust the torch to one (1) psi oxygen and one (1) psi acetylene.
4- After lighting the torch adjust to neutral flame with approximately ½” (12mm) blue cone extending from the torch tip.
5- Heat the welding rod and slip it into the flux, heat both parts of welding areas.
6- Clean the case in an ultrasonic cleaner.
Recommended Solder: Use cobalt based dental solder recommended by solder’s manufacturer.
Note: For best results use at least 50% new metal with 50% sandblasted and cleaned buttons.
Caution: Federal Law restricts this device to sale by or on the order of a dentist!
