Dust Exposure and Control in Micro-Grinding Operations
نویسندگان
چکیده
منابع مشابه
[Dust exposure and control in micro-grinding operations].
実験では,軽作業台(W60 cm×D45 cm×H70 cm) 上に浦和工業(株)製マイクロ・グラインダ,ユーホビ ー標準セットUC100,HB1(使用電源電圧100 V,最高 回転速度 25,000 rpm(実験時は 15,000 rpmに設定), 5 mmφカーボランダム砥石GC-12,P2005装着)を設置 し,ここにアクリル製回転架台軸上に固定した円筒状被 削材(φ 8.5mm,63mmの焼成粘土管)がバネ張力によ り常に一定の力(150 gw)で押し当たるよう配置し, さらにそこへ上半身人体模型(等身大トルソー)を向き 合わせて研磨作業者の再現とした.1回の研磨時間は連 続3分間とし,研磨時間中の吸入性粉じん(PM4)の質 量濃度を柴田科学(株)製慣性衝突式個人サンプラー NWPS-254,ミニポンプ MP-Σ300(吸引流量 2.50 L/ min)およびガラス繊維ろ紙T...
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In general, control of metal dust from hand-held disk grinders is difficult because such respirable dust tends to disperse in every direction around the grinding wheel and cannot be captured effectively by a conventional exhaust hood. The author described the application of a custom-made tool-mounted local exhaust ventilation (LEV) system attached to a hand-held disk grinder, and by laboratory ...
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Metal-working fluids (MWFs) are used in machining and grinding operations to cool the tool and work, reduce the friction between the tool and work, improve the surface integrity of the work piece, and increase tool life and productivity. Health problems have been reported among workers exposed to MWFs, including incidences of respiratory, digestive and skin cancers, and increased rates of cough...
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According to the Machinery Directive 2006/42/EC, one of the essential requirements relating to occupational safety and health hazards is to prevent dust pollution emitted by machinery during the implementation processes. Research on evaluation of emissions from machinery, according to the method of test bench using tracer gases, are currently being conducted in CIOP-PIB. This article presents s...
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A worker who ground the inner parts of camshafts for automobile engines using water-soluble metalworking fluid (MWF) for 14 yr was diagnosed with sinusitis. We postulated that the cause of sinusitis might be associated with exposure to microbes contaminating the water-soluble MWF used in the grinding operation. To uncover responsible agents for this case of sinusitis, a quantitative exposure as...
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ژورنال
عنوان ژورنال: SANGYO EISEIGAKU ZASSHI
سال: 2007
ISSN: 1349-533X,1341-0725
DOI: 10.1539/sangyoeisei.49.100