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法兰和磷化的表面处理及安全技术
[ 2011-12-16 21:36:00 | By: 杨远锋 ]
 

一、法兰和磷化的工艺操作安全技术
  法兰、磷化是钢铁零件两种常见的表面处理工艺方法。由于在工艺过程中需要使用酸、碱、消酸盐等药品,并排放有害气体和含酸、含碱的废液。因而法兰、磷化工序应单独设间,厂房应适当高些(轨面高5~7m),并设置天窗乃至采取全室通风。地坪及下水道应考虑耐蚀。酸洗、法兰、磷化以及热水清洗等设备,均应安装良好的吸风装置。
  操作人员应熟悉和遵守法兰、磷化操作规程,按规定穿戴好劳保用品。配置各种溶液和添加酸、碱液时,应戴橡皮手套和口罩。
  法兰、磷化过程中所排出的废水,应集中于废水池,经中和处理,符合排放标准后,方可排出。
  溶液的配制必须遵照工艺守则所规定的程序,防止因操作不当而引起溶液的崩爆、溢出或飞溅而灼伤人体。
  浓酸的稀释,只可将酸缓缓地加入水中,切不可将水加入浓酸中,接触酸、碱时,必须小心谨慎,一旦身体上沾到浓酸、碱时,应立即用大量冷水冲洗,并及时医治。
  当工件进出热水槽、法兰槽时,操作应仔细。在沸腾状态下工作的设备,应控制好温度,使其沸腾不要过于剧烈,以免溶液飞溅。利用蒸汽或其它热源加热热水时,也应注意不要使溶液激烈翻滚而造成溢出。
  法兰、磷化所用的吊具、挂具、料筐、起重链等,应专门管理,定期鉴定和更换,以免因局部腐蚀损坏而使整筐工件落入槽中,使得溶液溅出或在起重时突然断裂,造成伤害
事故
  由于工作环境湿度大,又有酸碱等腐蚀气体,因此设备极易损坏,应及时检修和更换损坏的零件,电气设备更应注意防护,确保绝缘良好。
  如采用浸热油时,油槽加热温度不能过高,
变压器油或机械油一般不超过120℃。
  二、清洗操作的安全注意事项
  零件的清洗一般采用清洗槽和清洗机。
  采用清洗槽清洗时,应注意清洗液的加热温度,一旦沸腾应马上关闭热源,以免开水溅出烫伤。
  清洗机的电气装置应注意防潮,外壳应接地良好,机械传动部分应有防护罩。
  清洗废液应集中处理,去除有害物及油污,经化验符合排放标准后,方可排入下水道。
  三、喷砂操作
安全技术
  喷砂是用5~6×100000Pa(5~6个大气压)的压缩空气,将石英砂通过专用喷嘴喷到工件表面进行清理,去除氧化皮、锈迹的方法。喷砂除了应注意一般电气和机械的安全操作外,由于使用石英砂,产生大量二氧化硅粉尘。《工业企业设计卫生标准》(JT36-70)规定:含有10%以上游离二氧化硅的粉尘,在空气中含量不得超过2mg/m3。
  喷砂设备必须有高效除尘设备,目前用得较多的是布袋除尘机。
  喷砂工人必须熟悉喷砂机及附属吸尘设备,严格按操作规程操作,穿戴好防护用品。
  喷砂时,应先开启除尘设备,待除尘设备运转正常后,才可进行喷砂操作。喷砂工作结束,须要等尘埃排除干净,才能关闭除尘设备,以保证喷砂工作环境的空气清洁。

 
 
 
原创
[ 2016-9-6 17:05:00 | By: 原创(游客) ]
 
原创(游客)http://njryw2016.lofter.com/post/1e59a72f_c38715b http://njryw2016.lofter.com/post/1e59a72f_c38715a http://njryw2016.lofter.com/post/1e59a72f_c387159 http://njryw2016.lofter.com/post/1e59a72f_c387158 http://njryw2016.lofter.com/post/1e59a72f_c387157 http://njryw2016.lofter.com/post/1e59a72f_c387156 http://njryw2016.lofter.com/post/1e59a72f_c387155 http://njryw2016.lofter.com/post/1e59a72f_c387154 http://njryw2016.lofter.com/post/1e59a72f_c387153 http://njryw2016.lofter.com/post/1e59a72f_c387152
 
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原创
[ 2016-9-28 16:40:11 | By: 原创(游客) ]
 
原创(游客)http://ywjseo.lofter.com/post/1e634752_c650cd8 http://seogsywj.lofter.com/post/1e634756_c6decea http://seogsywj.lofter.com/post/1e634756_c6ddbba http://wztgywj.lofter.com/post/1e65f473_c6ed224 http://wztgywj.lofter.com/post/1e65f473_c6ed440 http://bjseoywj.lofter.com/post/1e66bf3e_c7108ea http://ywjseo.lofter.com/post/1e634752_c64fe19 http://wztgywj.lofter.com/post/1e65f473_c6f0eb5 http://wztgywj.lofter.com/post/1e65f473_c6f0c57 http://ywjseo.lofter.com/post/1e634752_c651a3a
 
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原创
[ 2016-9-30 11:16:54 | By: 原创(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-14 19:12:32 | By: rmdhl(游客) ]
 
rmdhl(游客)http://www.jxedt.com/wen/kaoshi/3170638294447095890.html
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Re:在漫画中识别身边的违章
[ 2016-10-16 2:26:53 | By: kuklo(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-16 2:30:14 | By: phkmp(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-21 20:01:20 | By: kjybf(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-22 7:53:19 | By: ceiln(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-22 13:20:56 | By: dhmos(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2017-2-18 0:10:05 | By: shmor(游客) ]
 
shmor(游客)http://wen.28.com/article/133990
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Re:在漫画中识别身边的违章
[ 2017-2-20 0:10:37 | By: nrwyc(游客) ]
 
nrwyc(游客)http://wen.28.com/article/97799
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Re:在漫画中识别身边的违章
[ 2017-3-2 21:06:48 | By: cfinq(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2017-3-4 13:18:45 | By: tshjn(游客) ]
 
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