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Dental Alloy / Dental Material
- Product Name:
Dental Alloy / Dental Material
- Category: Others
- Price: Get Latest Price
- Product Detials:
Dental Alloy / Dental Material :
QLD-Voke Cobalt-chromium PFM alloy is a high-quality semi-noble metal alloy,non beryllium, good biological compatibility,the adaptation scope is broad,worldwide recognition for over 10 years,safe and reliable.
High resistance to corrosion;
Biological compatibility assessed and certified by inspection organization;
Safe and reliable with ceramic;
High heat resistance;
Low thermal conductivity;
Percentage of weight of compositions:
Co 60% (max)
Cr 28%-30%
Mo 4%-6%
Other Mn ,Si , C ,N ,Fe
Packing by box @ 1kg , cylinder
Physical Properties:
Fusion Temperature 1250 - 1350
Hardness 27HRC
Tensile Strength > 510N/mm2
Rate of Elongation > 3%
Thermal Expansion Coefficient at 25-500 14.1×10-6k-1
at 20-600 14.4×10-6k-1
Instructions for Use:
Wax Pattern
The thickness of the wax pattern shall be greater than 0.3 mm and the thickness of the casting after sanding and sand blast shall be at least 0.3 mm.
Embedment
The market available phosphate Ni-Cr porcelain embedding materials are selected. Please use the embedding materials in correct way according to the instructions for use of the embedding materials.
Casting
This alloy can be cast with flame or through HF process. Porcelain crucible is selected. Do not overheat during fusion. Since cobalt-based alloy has a relatively high melting point, the flame shall be relatively stronger when melting,fast melting,prevents the oxidation, avoid shrinkage. It is recommended that only new metal is used to guarantee stable casting. For recycled application, only 20% of used metal can be added.
After the cast ring is opened
To cut off the sprue according to the standard, and then carry out sand blast and polishing;
Oxidation
Put the sanded casting into porcelain furnace for oxidation processing. It is recommended that the initial temperature be 500 - 600 and the final temperature be 980. Hold the casting for 2 minutes in vacuum, and then carry out sand blast, cleaning and porcelain coating.
The whole Operating Sequence
Casting cast ring opening cutting off sprue sanding oxidation sand blast cleaning porcelain coating.
Caution
The internal crown shall not be less than 0.2 mm to avoid crown penetration or porcelain cracks due to insufficient strength.
Good ventilation is required in the casting shop and sanding shop. Operators must wear protective gauze mask to prevent harm from metal powder to human body.
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- Contact Info
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Company： Shanghai Smedent Medical Instrument Co.,Ltd Area： China/Shanghai Contact： Miss Judy Woo(Oversea Depa Tel： 86-21-61474252-8003 Fax： 86-21-61474280 Web site： www.smedent.com Add： 1st Building, Xinggang Mansion, No. 955, Wuning Rd, Shanghai, 200063 China Zip： 200063
- Supplier's information
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Shanghai Smedent Medical Instrument Co.,Ltd
Shanghai Smedent Medical Instrument Co., Ltd., is a hi-tech professional enterprise, who is spe ..... more >>
Contact： Miss Judy Woo(Oversea Depa
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