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class="title"><b>行业动态</b><span class="position">当前位置:<a href="http://www.life-styl.com/" title="网站首页">网站首页</a> >> <a href="../news/">新闻资讯</a> > <a href="../news/list-18-cn.html">行业动态</a></span></h3> <div class="clear"></div> <div class="active" id="shownews"> <h1 class="title">抛光机抛光过程中常见问题的解决方法</h1> <div class="editor"><div><div> (1)抛光过度 在日常抛光过程中遇到的最大问题就是&ldquo;抛光过度&rdquo;,就是指抛光的时间越长,模具表面的质量就越差。发生抛光过度有二种现象:即是&ldquo;橘皮&rdquo;和&ldquo;点蚀&rdquo;。抛光过度多发生于机械抛光。</div> <div> (2)工件出现&ldquo;橘皮&rdquo;的原因</div> <div> 不规则粗糙的表面被称为&ldquo;橘皮&rdquo;,产生&ldquo;橘皮&rdquo;有许多的原因,最常见的原因是由于模具表面过热或渗碳过度而引起,抛光压力过大及抛光时间过长是产生&ldquo;橘皮&rdquo;的主要原因。比如:抛光轮抛光,抛光轮产生的热量会很容易造成&ldquo;橘皮&rdquo;。较硬的钢材能承受的抛光压力会大一些,相对较软的钢材容易发生抛光过度,研究证明产生抛光过度的时间会因钢材的硬度不同而有所不同。</div> <div> (3)消除工件&ldquo;橘皮&rdquo;的措施</div> <div> 当发现表面质量抛得不好时,许多人就会增加抛光的压力和延长抛光的时间,这种作法往往会使表面的质量变得更差。可采用以下的方法去补救:</div> <div> 把有缺陷的表面去除,研磨的粒度比先前使用砂号略粗一级,然后进行研磨,抛光的力度要比先前的低一些。以低于回火温度25 ℃的温度进行应力消除,在抛光前使用最细的砂号进行研磨,直到达到满意的效果,最后以较轻的力度进行抛光。</div> <div> (4)工件表面&ldquo;点蚀&rdquo;形成的原因</div> <div> 由于在钢材中有些非金属的杂质,通常是硬而脆的氧化物,在抛光过程中从钢材表面被拉出,形成微坑或点蚀,产生&ldquo;点蚀&rdquo;的主要因素有以下几点:</div> <div> 1) 抛光的压力过大,抛光时间过长;</div> <div> 2) 钢材的纯净度不够,硬性杂质的含量高;</div> <div> 3) 模具表面生锈;</div> <div> 4) 黑皮料未清除。</div> <div id="metinfo_additional"></div></div><div class="clear"></div></div> <div class="met_hits"><div class='metjiathis'><div class="bdsharebuttonbox"><a href="#" class="bds_more" data-cmd="more"></a><a href="#" class="bds_qzone" data-cmd="qzone" title="分享到QQ空间"></a><a href="#" class="bds_tsina" data-cmd="tsina" title="分享到新浪微博"></a><a href="#" class="bds_tqq" data-cmd="tqq" title="分享到腾讯微博"></a><a href="#" class="bds_renren" data-cmd="renren" title="分享到人人网"></a><a href="#" class="bds_weixin" data-cmd="weixin" 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