CrWMn,Overview
CrWMn,is,a,production,mold,is,most,commonly,used,high-carbon,alloy,tool,steel.
Mold,steel,CrWMn,9CrWMn,mold,steel,modified,to,improve,the,content,of,C,,Cr,,W,,so,there,is,a,higher,hardenability,,oil,quench,hardenability,Φ40,~,the,Φ50mm,the,workpiece,,and,the,quenching,deformation,is,small,,which,used,to,refer,to,the,micro-,deformation,of,steel.,W,formation,of,tungsten,carbide,,steel,,chromium,steel,(of,Cr2),and,steel,9SiCr,excess,carbide,and,higher,hardness,,wear,resistance,after,quenching,and,tempering,,in,addition,to,tungsten,grain,refinement,to,improve,tempering,stability,,so,that,the,steel,to,get,a,better,toughness.,After,quenching,of,residual,austenite,than,other,alloy,steel,and,more,,in,addition,to,the,formation,of,a,carbide,network,the,toughness,can,be,improved,by,forging,after,normalizing.
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CrWMn,factory,hardness
Delivery,of,steel,in,annealed,condition.
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CrWMn,features
Cold,work,die,steel,,performance,,use,,and,SK3,close.
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CrWMn,use
Mainly,used,for,carbon,tool,steel,can,not,meet,the,requirements,of,the,cross-section,larger,,more,complex,shape,of,the,mold,parts,requiring,hardening,deformation,is,small.
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CrWMn,heat,treatment
Composite,CrWMn,steel,heat,treatment,is,divided,into,two,steps,,first,the,pre-treatment,,quenching,and,tempering,at,low,temperature.

(A),conventional,temperature,of,annealing,(b),the,ball,annealing

(C),circulating,ball,annealing,(d),high-temperature,solid,solution,,,recirculating,ball,annealing,CrWMn,steel,after,different,Pretreatment,,morphology,,distribution,of,good,samples,,quenching,and,tempering,at,low,temperature,under,different,temperature,conditions,The,final,heat,treatment,,to,observe,the,morphology,and,distribution,of,hardness,change.

CrWMn,steel,quenching,and,tempering,process,results,and,analysis,CrWMn,steel,by,pretreatment,Process,Microstructure,photos,CrWMn,steel,conventional,annealing,,the,hardness,of,180,~,190HB,,after,the,heat,treatment,process,for,the,180,~,200,HB.

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