![]() Strength of a material is its ability to withstand this applied load without failure or plastic deformation. In designing structures and machines, it is important to consider these factors, in order that the material selected will have adequate strength to resist applied loads or forces and retain its original shape. Strength of materials basically considers the relationship between the external loads applied to a material and the resulting deformation or change in material dimensions. In mechanics of materials, the strength of a material is its ability to withstand an applied load without failure or plastic deformation. When melting, grinding, or polishing alloy, use adequate ventilation, vacuum systems, protective eyewear, and protective masks and clothing.Mechanical Properties of Tungsten Carbide Strength of Tungsten Carbide Rubber point all clasps and go over all surfaces that have been rubber wheeled. Consult manufacturer's instructions and specifications for proper operating procedures. Use conventional electropolishing systems accepted and recommended for high-heat Chromium-Cobalt partial denture alloy only. *Go over the entire case with a Small Barrel for polishing *Grind or trim tight areas with an Inverted Cone *Clean up the inside of clasps and uprights with Taper Stone For manual operators, when all the metal has melted together as one joined mass, release machine immediately to prevent overheating of the metal. Instead, use large tweezers to load the crucible, which will help prevent cracking of the crucible. Exercise care in placing virgin metals or buttons in the crucible. It is crucial to follow the manufacturer's instructions in the operation of your specific equipment, due to the various types of induction machines available on the market (such as Manual, Semi-Automatic, and Fully Automatic, etc.). Then remove the mold and set it aside to bench cool. Allow the casting arm to rotate for a minimum of twenty seconds.When the metal melts into a single mass, release the casting machine arm. At this point, drop a small amount of flux onto the heated metal to make the piece flow together. Heat the alloy evenly until the alloy begins to melt.Place a sufficient amount of alloy in the preheated crucible.Give the spring-type casting arm three turns on an average casting. ![]() Set gauge at 20 psi oxygen and 8 psi acetylene.Use a single-orfice tip or a multi-orfice tip.Burnout at the temperatures and time recommended by the investment manufacturer or at a minimum of 1,850☏ (1,010☌) for 1.5 hrs. Use investments for high-heat Chromium-Cobalt partial denture alloys only. Use respirator, goggles, gloves, coveralls, or protective clothing.Īlthough reasonable care has been taken in gathering information from the sources which we believe are reliable for preparation of this documents, we extend no warranties and make no representation as to the accuracy or completeness of the information contained, and assume no responsibility regarding suitability of this information for the user's intended purpose or for the consequences of its use. Melt, grind and polish in presence of adequate ventilation. Chronic exposure to Cobalt may cause pulmonary hypersensitivity. Exposure to large concentrations of dust may cause industrial dermatitis and respiratory tract irritation. In solid form no special precautions are requiredĭuring casting and grinding avoid inhalation of fumes and dust.("Zaire" w/ regular hardness) (*) 0.40% Carbon 360HV ("Zaire" hard) Section II Ingredients & Hazards Ingredients
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