718模具钢
1.此钢经已热处理,硬度均匀透稳(HB290-330)制成工模***;2.除较细花式外,多已刨除表面氧化黑皮,故材料利用率高,且可减少加工费用;3.经超音波检验,硬度及金相结构均匀,且容易达成镜面磨光;4.可用火焰方法于空气中硬化,使部分易损地方加硬至50-55HRC,约5mm深度;5.因硫量低,对火花电蚀更为适合。vardelta=0.2;varcollection;varcloseB=false;functionfloaters(){this.items=[];this.addItem=function(id,x,y,content){document.write(''+content+'');varnewItem={};newItem.object=document.getElementById(id);newItem.x=x;newItem.y=y;this.items[this.items.length]=newItem;}this.play=function(){collection=this.itemssetInterval('play()',30);}}functionplay(){if(screen.width0?1:-1)*Math.ceil(Math.abs(dx));followObj.style.left=followObj.offsetLeft+dx;}if(followObj.offsetTop!=(document.body.scrollTop+followObj_y)){vardy=(document.body.scrollTop+followObj_y-followObj.offsetTop)*delta;dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy));followObj.style.top=followObj.offsetTop+dy;}followObj.style.display='';}}functioncloseBanner(){closeB=true;return;}vartheFloaters=newfloaters();//theFloaters.addItem('followDiv1','document.body.clientWidth-105',160,'关闭');theFloaters.play();)