SKH-9模具钢
锻造:1.100~900℃退火:加热至800-850℃,在此温度中停留二~四小时,在炉中任其渐冷。淬火:先预加热至550-600℃,次加热至950℃,再加热至a:1,220~1250℃;b:1,200℃~1230℃。在油中淬硬,但油温必须先保湿40-60℃(a.一般工具;b.形式复杂式需要韧性之工具)回火:加热至550-570℃,在此温度中停留,然后在静止空气中冷却,回火必须重复二次硬度...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();)