Final report on carcinogens background document for cobalt-tungsten carbide: powders and hard metals.
ثبت نشده
چکیده
منابع مشابه
Cobalt and Cobalt Compounds That Release Cobalt Ions In Vivo
The Report on Carcinogens includes two separate listings (i.e., profiles) for cobalt-related exposures: Cobalt and Cobalt Compounds That Release Cobalt Ions In Vivo and Cobalt-Tungsten Carbide: Powders and Hard Metals. Cobalt and cobalt compounds as a class are listed for the first time in the Fourteenth Report on Carcinogens, and this listing includes and supersedes the listing for cobalt sulf...
متن کاملNotes on the toxicology of cobalt metal.
This investigation originated in a report by Dr. Joan Cotterill, one of H.M. medical inspectors of factories, that workers in a Midlands factory making hard cutting tools complained of shortness of breath and that in radiographs of their lungs, some of them showed abnormal shadows. Many of the processes in the factory are trade secrets, but it is known that powdered cobalt metal is used as a bo...
متن کاملComputed tomography of the thorax in workers exposed to hard metals.
Hard metal disease is an occupational lung disorder occurring primarily among workers employed in the cemented tungsten carbide industry."4 Interstitial pulmonary fibrosis, acute obstructive pulmonary disease (asthma), and dermatitis are the main clinical manifestations of such exposure. The workers in this industry are at risk from exposure to powders of a variety of hard metals during the man...
متن کاملبررسی عوامل موثر بر سختی و چقرمگی شکست هاردمتال‌های کاربیدتنگستن-کبالت
Mechanical properties of hard metals are very close to starting material, carbide grain size, kind of binders and sintering temperatures. In this research, effect of the amount of binder phase, starting powder and sintering situation on the mechanical properties of hardness and fracture toughness of Tungsten carbide-Cobalt hard metals were investigated. The results showed that the powder granul...
متن کاملDevelopment of Cemented Carbide Tool of Reduced Rare Metal Usage
Cemented carbides, including coated cemented carbides, account for 75% of the cutting tools market because of their features such as high hardness, toughness, and the responsiveness to iron, through the use of tungsten carbide for their main hard phases and cobalt for their bonding metals. The consumption of tungsten continues to increase as the amount of carbide tool production increases with ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Report on carcinogens background document for [substance name]
دوره 9-5979 شماره
صفحات -
تاریخ انتشار 2009