Inmodernmachining,carbideandhighspeedsteelarethemostusedtoolmaterials,accountingforalmosthalf.Theinventionandapplicationofhighspeedsteelhasahistoryofawholecentury,andcementedcarbidehasahistoryofhalfac...
Theexpertthinks,becauseinrecentyearsourcountryUSESnearly1billiondollarseveryyeartoimportmold,amongthemprecision,large,complex,longlifemoldoccupiesthemajority,sofromthepointofviewofreducingimport,thisk...
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