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1.????°???????(HB)

????????????è??è?·(???è??3000kg)??????????¤§?°?(?????????è?????10mm)????·????é’????????…?????–?è?¨é??????????????????—?é—???????è????????è??è?·????…?????—?é???§??????”????????????????°??????????(HB)?????????????…??–¤???/mm2 (N/mm2)???

2.????°???????(HR)

??“HB>450??–è?…è????·è???°??—???????è??é???”¨????°???????è??é??è???”??”¨????°???????è??é????????????”¨??????é??角120?°???é?‘?????????é”???“??–?????????1.59???3.18mm???é’?????????¨??????è??è?·???????…?è?????????–?è?¨é??????”±????—?????·±????±????????–???????????????????è??é??????–????????????????????????‰?§???????????????????è?¨?¤????

?·         HRA??????é???”¨60kgè??è?·?’?é’????é”?????…???¨?±???—?????????????”¨????????????é?????????–?(??????è?¨???é?‘??‰)???

?·         HRB??????é???”¨100kgè??è?·?’???????1.58mm?·???????é’????????±???—?????????????”¨?????????è????????????–?(???é?????é’????é“?é“???‰)???

?·         HRC??????é???”¨150kgè??è?·?’?é’????é”?????…???¨?±???—?????????????”¨????????????é?????????–?(????·????é’???‰)???

3 ????°???????(HV)

???120kg?????…???è??è?·?’?é??角???136?°???é?‘???????–????é”?????…???¨????…?????–?è?¨é??????”¨????–?????—??????‘???è?¨é???§?é?¤???è??è?·????????????????°???????HV???(kgf/mm2)???

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????°??????????HRA???HRB???HRC??‰??????A???B???C?????‰?§????????????????????§°???????°?A???????°?B???????°?C???
   ????°???????è??é???????°????‰?????”¨???????§????é??????—???????è??é?????????????‰?§?????°????????§?????????????98.07N(???10kgf)???????????????????—??·±???è????—????????????????°?A????”¨?????????é”?è?±???????¤????????????????è??588.4N(???60kgf)???????°?B????”¨???????????????1.588mm(1/16è?±???)???é’??????????????¤????????????????è??980.7N(???100kgf)???è??????°?C????”¨???????°?A????????????é”?è?±?????????????¤?????????????????????????1471N(???150kgf)????????¤????°?Bé???”¨??????è??è?????????–????è??????°?Cé???”¨è????????????–????
   ???è·?è????????é?‘?±?????–????????§?????????????é—????????????????????????????é—??…·??‰è?‘???????????”?…??????????????????????????”±è?·?§???‘??§????????—????’???§?????‘??§????????—???????????????????–??????????è??é???????‘??§????????—???è??é??????????????????°±è??é????????????§?????–?????????—?…?????????????è??????????????é“??¤?????–???—??‰?????????????°??????????????°??????????????°??????????????…§è?¨???????–????é’???????????????????????????—?????????è?¨?????????é“????????¨??…·???é“??¤???‰?????????????¤?????¨???? ???????–????é“??¤?????¤????????¨?è??è??è?????è?·???é?…???

+ c, J: k! o1 C1 h' d% Nè????°é“??¤????è?·???????·????é“??¤?é“???????http://item.taobao.com/item.htm?spm=a230r.1.0.0.zaWxgj&id=26629580049

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