DAMCAST PS User`s manual - zhengzhou yadent new
Contents
1. S YADENT DAMCAST PS User s manual Damcast PS A biocompatible cobalt chrome alloy nickel amp beryllium free as defined by ISO22674 for restorations of removable framework and partial dentures Technical Data amp Composition Melting Range 1240 1340 C Cobalt 64 Yield Strength 520 MPa Chromium 29 Elongation 6 Molybdenum 6 Density 8 3 g cc others lt 3 Modulus of elasticity 220Gpa Instruction for use INVESTMENT Use investment recommended by manufacturers only for high heat Chromium Cobalt Partial Denture Alloy Follow the manufacturer s instructions carefully Phosphate base investments water or liquid mix is recommended TORCH CASTING 1 Multi orifice tips are recommended 2 Light the torch for better results allow the blue inner flame to expend not more than 3 mm and the outer flame approximately 38 mm from the torch tip 3 Place sufficient alloy in the preheated crucible 4 Heat the alloy uniformly Cast immediately after slumping to avoid excessive burning INDUCTION CASTING Follow the manufacturer s instructions the casting temperature is 1510 1540 C When the metal has melted as one mass 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 palatal bars and shape the finis2. h line areas on upper cases 3 Use inverted cone type stones to trim or grind tight areas 4 Do not stone stippled surfaces electro polish the high shine 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 amp 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 After lighting the torch adjust to neutral flame with approximately 12mm blue cone extending from the torch tip 4 Heat the welding rod and dip it into the flux heat both parts of welding areas 5 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 ZHENGZHOU YADENT NEW MATERIALS Co LTD Huagongxi road high tech development zone zhengzhou china
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