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Lab talk, the good, the bad, and the ugly
Dental-CAD
Green metal
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<blockquote data-quote="Mark Jackson" data-source="post: 29540" data-attributes="member: 153"><p>Green metal is the term for warm compacted metals to be used in machining. It is, in fact, very much like the green zirconia that we use now. It has organic or inorganic binders and even sometimes lubricants inside. By having the powdered metal in a green ststae, it can be milled of a softer form, allowing quicker machining, less heat, less wear of cutting tools and lighter weight.</p><p></p><p>After milling, the frames are then sintered in a sintering oven. Some of the problems in the past with this technology has been contamination of the metal causing gassing, and also lots of porosity. </p><p></p><p>Some of the early prototypes I worked with also had warping problems during sintering and shrinkage.</p></blockquote><p></p>
[QUOTE="Mark Jackson, post: 29540, member: 153"] Green metal is the term for warm compacted metals to be used in machining. It is, in fact, very much like the green zirconia that we use now. It has organic or inorganic binders and even sometimes lubricants inside. By having the powdered metal in a green ststae, it can be milled of a softer form, allowing quicker machining, less heat, less wear of cutting tools and lighter weight. After milling, the frames are then sintered in a sintering oven. Some of the problems in the past with this technology has been contamination of the metal causing gassing, and also lots of porosity. Some of the early prototypes I worked with also had warping problems during sintering and shrinkage. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Dental-CAD
Green metal
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