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<span class="jqzoom"><img jqimg="http://cmsimgshow.zhuchao.cc/28259/201901081459231232825976938.jpg?path=www.tmhaj.com/uploads/cp/201901081459231232825976938.jpg" src="http://cmsimgshow.zhuchao.cc/28259/201901081459231232825976938.jpg?path=www.tmhaj.com/uploads/cp/201901081459231232825976938.jpg" /></span> </div> </div> <div class="protxt"> <span>产品名称?/span><h1>天津激光切割机</h1></br> </div> <div class="clear"></div> <div class="protail"><img src="/template/xin1/images/arr.gif" border="0"/><span>产品详细介绍</span></div> <div class="pro_tp"><p> <a href="supply/65.html" target="_blank">天津激光切</a>割机常见的六个问题及处理方法 </p> <p> <div style="text-align:center;"> <img src="http://cmsimgshow.zhuchao.cc/28259/201901081458484512825934683.jpg" width="500" height="286" alt="" /> </div> 1.切割穿孔技?nbsp;<br />     任何一种热切割技?除少数情况可以从板边缘开始外,一般都必须在板上穿一个小孔。之前在激光冲压复合机上是用冲头先冲出一个孔,然后再用激光从小孔处开始进行切割。对于没有冲压装置的<a href="tjjgq/" target="_blank">激光切</a>割机有两种穿孔的基本方法?nbsp;<br />     爆破穿孔——材料经连续激光的照射后在中心形成一个凹?然后由与激光束同轴的氧流很快将熔融材料去除形成一个孔。一般孔的大小与板厚有关,爆破穿孔平均直径为板厚的一?因此对较厚的板爆破穿孔孔径较?且不?不宜在加工精度要求较高的零件上使?只能用于废料上。此外由于穿孔所用的氧气压力与切割时相同,飞溅较大?nbsp;<br />     脉冲穿孔——采用高峰值功率的脉冲激光使少量材料熔化或汽?常用空气或氮气作为辅助气?以减少因放热氧化使孔扩展,气体压力较切割时的氧气压力小。每个脉冲激光只产生小的微粒喷射,逐步深入,因此厚板穿孔时间需要几秒钟。一旦穿孔完?立即将辅助气体换成氧气进行切割。这样穿孔直径较?其穿孔质量优于爆破穿孔。为此所使用的激光器不但应具有较高的输出功率;更重要的是光束的时间和空间特?因此一般横流CO2激光器不能适应激光切割的要求。此外脉冲穿孔还须要有较可靠的气路控制系?以实现气体种类、气体压力的切换及穿孔时间的控制?br /> 在采用脉冲穿孔的情况?为了获得高质量的切口,从工件静止时的脉冲穿孔到工件等速连续切割的过渡技术应加以重视。从理论上讲通常可改变加速段的切割条?如焦距、喷嘴位置、气体压力等,但实际上由于时间太短改变以上条件的可能性不大。在工业生产中主要采用改变激光平均功率的办法比较现实,具体方法是改变脉冲宽度;改变脉冲频率;同时改变脉冲宽度和频率。实际结果表??种效果好?nbsp;<br /> 2.切割加工小孔(直径小与板厚)变形情况的分?nbsp;<br />     这是因为机床(只针对大功率激光切割机)在加工小孔时不是采取爆破穿孔的方式,而是用脉冲穿孔(软穿刺)的方式,这使得激光能量在一个很小的区域过于集中,将非加工区域也烧焦,造成孔的变形,影响加工质量。这时我们应在加工程序中将脉冲穿孔(软穿刺)方式改为爆破穿孔(普通穿刺)方式,加以解决。而对于较小功率的激光切割机则恰好相反,在小孔加工时应采取脉冲穿孔的方式才能取得较好的表面光洁度?nbsp;<br /> 3. 激光切割低碳钢时,工件出现毛刺的解决方? <br />     根据CO2激光切割的工作和设计原理,分析得出以下几点原因是造成加工件产生毛刺的主要原因:激光焦点的上下位置不正确,需要做焦点位置测试,根据焦点的偏移量进行调整;激光的输出功率不够,需要检查激光发生器的工作是否正常,如果正常,则观察激光控制按钮的输出数值是否正确,加以调整;切割的线速度太慢,需要在操作控制时加<br /> 大线速度;切割气体的纯度不够,需要提供高质量的切割工作气体;激光焦点偏移,需要做焦点位置测试,根据焦点的偏移量进行调整;机床运行时间过长出现的不稳定性,此时需要关机重新启动?nbsp;<br /> 4. 天津激光切割机加工不锈钢和敷铝锌板时,工件有毛刺产生的分析 <br />     以上情况的出现,首先考虑切割低碳钢时出现毛刺的因素,但不可简单地加快切割速度,因为增加速度有时会出现板材切割不穿的情况,此种情况在加工敷铝锌板时尤为突出。这时应综合考虑机床的其他因素加以解决,如喷嘴是否要更换,导轨运动不稳定等?nbsp;<br /> </p> <p> <br /> </p></div> </div> <div class="insNewsArti"> <div class="proArtiNum"> <p>上一条:<a href="/supply/40.html">加工中心天津销?/a></p> <p>下一条:<a href="/supply/38.html">小功率光纤激光切割机</a></p> </div> <div class="tag">相关标签?a href='/key.aspx?k=%e5%a4%a9%e6%b4%a5%e6%bf%80%e5%85%89%e5%88%87'>天津激光切</a>,<a href='/key.aspx?k=%e5%a4%a9%e6%b4%a5%e6%bf%80%e5%85%89%e5%88%87%e5%89%b2%e6%9c%ba%e4%bb%b7%e6%a0%bc'>天津激光切割机价格</a>,<a href='/key.aspx?k=%e5%a4%a9%e6%b4%a5%e6%bf%80%e5%85%89%e5%88%87%e5%89%b2%e6%9c%ba%e6%89%b9%e5%8f%91'>天津激光切割机批发</a>,</div> <div class="tag">来源?a 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