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轧钢安全技术工艺润滑介绍
[ 2011-12-16 21:35:00 | By: 杨远锋 ]
 
 在轧钢(主要是冷轧)过程中,为了减小轧辊与轧材之间的磨擦力,降低轧制力和功率消耗,使轧材易于延伸,控制轧制温度,提高轧制产品质量,必须在轧辊和轧材接触面间加入润滑冷却液,这一过程就称为轧钢工艺润滑。  
  冷轧通常是用热粗轧、精轧后得到厚度为2~4mm、经过酸洗和退火处理的钢卷作坯料,用多辊轧机(可逆或连续轧制)轧成厚度在0.8mm至0.01mm的薄板。由于冷金属具有很大的变形抗力,现化冷轧机的轧制力已达到数千吨,而轧制速度则接近2500m/min。显然,金属在这样高速的变形过程中,一方面由于金属内部分子间的磨擦必然产生大量的热能;另一方面,轧材的减薄(延伸)又不可避免地使轧辊与轧材表面发生相对运动。  
  冷轧工艺润滑剂的基本要求是:  
  1.适当的油性,即在极大的轧制压力下,仍能形成边界油膜,以降低磨擦阻力和金属变形抗力;减少轧辊的磨损,延长轧辊使用寿命;增加压下量,减少轧制道次,节约能量消耗。但是不定期要考虑到轧辊与钢材之间必须要有一定磨擦力,才能使钢材咬入轧辊,磨擦系数过低,将会打滑。所以润滑性能必须适当   
  2.良好的冷却能力,即能最大限度地吸收轧制过程中产生的热量,达到恒温轧制,以保持轧辊具有稳定的辊形,使带钢厚度保持均匀;  
  3.和带钢表面有良好的冲洗清洁作用。以去除外界混入的杂质、污物,提高钢材的表面质量;  
  4.良好的理化稳定性。在轧制过程中,不与金属起化学反应,不影响金属的物理性能;  
  5.退火性能好。现代冷轧带钢生产,为了简化工艺,提高劳动生产率,降低成本,在需要进行中间退火时,采用了不经脱脂清洗而直接退火的生产工艺。这就要求润滑剂不因其残留在钢材表面而发生退火腐蚀现象(即在钢材表面产生斑点);  
  6.过滤性能好。为了提高钢材表面质量,某些轧机采用高精度的过滤装置(如硅藻土)来最大限度地去除油中的杂质。此时,要避免油中的添加剂被吸附掉或被过滤掉,以保持油品质量;  
  7.搞氧化安定性好,使用寿命长;  
  8.防锈性好。对工序间的短期存放,能起到良好的防锈作用;  
  9.不应含有损害人体健康的物质和带刺激性的气味;  
  10.油源广泛,易于获得,成本低。  
  热轧工艺润滑  
  提高热轧带钢机组的产量,降低消耗,提高生产率,这是轧钢工艺中一件极为重要的事。各国实践已经证明,使用热轧油能显著减少轧辊的磨损,降低电耗、改善钢板表面质量,提高生产率。  
  使用热轧就可以获得以下好处(已为实践证明):  
  1.改善了轧辊的表面状况。  
  2.降低了轧辊的单位消耗。  
  3.降低了电能的消耗。  
  4.提高了带钢的表面质量。  
  5.降低轧制压力,容易实现轧制薄规格带钢。  
  6.促进热轧理论的研究。 
 
 
 
原创
[ 2016-9-6 17:05:01 | By: 原创(游客) ]
 
原创(游客)http://njryw2016.lofter.com/post/1e59a72f_c387151 http://njryw2016.lofter.com/post/1e59a72f_c387150 http://njryw2016.lofter.com/post/1e59a72f_c38714f http://njryw2016.lofter.com/post/1e59a72f_c38714e http://njryw2016.lofter.com/post/1e59a72f_c38714d http://njryw2016.lofter.com/post/1e59a72f_c38714c http://njryw2016.lofter.com/post/1e59a72f_c38714b http://njryw2016.lofter.com/post/1e59a72f_c38714a http://njryw2016.lofter.com/post/1e59a72f_c387149 http://njryw2016.lofter.com/post/1e59a72f_c387148
 
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原创
[ 2016-9-28 16:40:12 | By: 原创(游客) ]
 
原创(游客)http://seogsywj.lofter.com/post/1e634756_c6ded5a http://bjseoywj.lofter.com/post/1e66bf3e_c70f731 http://bjseoywj.lofter.com/post/1e66bf3e_c70739f http://wztgywj.lofter.com/post/1e65f473_c6e9fc6 http://seogsywj.lofter.com/post/1e634756_c6df3de http://ywjseo.lofter.com/post/1e634752_c64fa0f http://ywjseo.lofter.com/post/1e634752_c6500c9 http://bjseoywj.lofter.com/post/1e66bf3e_c70760c http://bjseoywj.lofter.com/post/1e66bf3e_c71073f http://ywjseo.lofter.com/post/1e634752_c64fee4
 
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原创
[ 2016-9-30 11:16:55 | By: 原创(游客) ]
 
原创(游客)http://rywkdks.lofter.com/post/1e698063_c7f4406 http://rywywj.lofter.com/post/1e6a80c3_c820e2f http://rywkdks.lofter.com/post/1e698063_c7f6264 http://rywkdks.lofter.com/post/1e698063_c7f8e14 http://rywywj.lofter.com/post/1e6a80c3_c820d8d http://rywywj.lofter.com/post/1e6a80c3_c823360 http://rywkdks.lofter.com/post/1e698063_c7f82db http://njryw168.lofter.com/post/1e6983e5_c7f0843 http://njryw168.lofter.com/post/1e6983e5_c7efda1 http://njryw168.lofter.com/post/1e6983e5_c7e886e
 
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Re:在漫画中识别身边的违章
[ 2016-10-11 11:18:30 | By: fbtvz(游客) ]
 
fbtvz(游客)http://www.esafety.cn/blog/wll/66030/archives/2011/105437.html
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Re:在漫画中识别身边的违章
[ 2016-10-13 17:38:37 | By: glnqt(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-16 20:07:32 | By: otvyb(游客) ]
 
otvyb(游客)http://www.esafety.cn/blog/wll/66374/archives/2011/109201.html
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Re:在漫画中识别身边的违章
[ 2016-10-17 4:45:51 | By: uydfj(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-17 7:45:36 | By: puyeh(游客) ]
 
puyeh(游客)http://www.esafety.cn/blog/wll/85686/archives/2010/104725.html
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http://www.esafety.cn/blog/wll/73171/archives/2010/101213.html
http://bbs.tga.plu.cn/thread-3521929-1-1.html

 
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Re:在漫画中识别身边的违章
[ 2016-10-18 3:57:57 | By: joquy(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2016-10-19 10:50:24 | By: igyzd(游客) ]
 
igyzd(游客)http://ias.cqu.edu.cn/e/space/?userid=2431508
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Re:在漫画中识别身边的违章
[ 2016-10-22 3:28:45 | By: zqtuy(游客) ]
 
zqtuy(游客)http://bbs.hsw.cn/apps.php?q=group&a=read&cyid=314&tid=14199961?ji=82489
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Re:在漫画中识别身边的违章
[ 2016-10-22 16:10:44 | By: kabfh(游客) ]
 
kabfh(游客)http://www.esafety.cn/blog/wll/34024/archives/2010/102335.html
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Re:在漫画中识别身边的违章
[ 2016-10-23 4:44:05 | By: laehl(游客) ]
 
laehl(游客)http://www.anqiu123.com/store-1787/document-id-494177.html
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Re:在漫画中识别身边的违章
[ 2017-2-18 22:14:29 | By: oyoqt(游客) ]
 
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Re:在漫画中识别身边的违章
[ 2017-2-19 23:52:43 | By: imquy(游客) ]
 
imquy(游客)http://wen.28.com/article/90948
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Re:在漫画中识别身边的违章
[ 2017-3-4 15:27:51 | By: vrjor(游客) ]
 
vrjor(游客)http://www.tdbzy.com/plus/view.php?aid=286659
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