1、配重鐵工作面小范圍內的局部變化是指加工表面不平整，有變形，灰口鐵可以看作是鋼的基體與片狀石墨的夾雜。因此石墨片越少，越細，為了保證鑄鐵在澆鑄能夠得到灰口，且不至于得到過多和粗大的石墨片，這里所說的工作面小范圍，對小鑄鐵平板而言是局部位置，對大鑄鐵平板而言是局部面積。鑄鐵平板的平整性反映了鑄鐵平板局部誤差鑄鐵平板的局部誤差是指鑄鐵平板工作面局部平面度加工質量，即表面粗糙度。
2、配重(zhong)鐵(tie)微觀質(zhi)量(liang)是加工(gong)(gong)(gong)(gong)表面(mian)小(xiao)間距微小(xiao)峰谷(gu)不(bu)平度，鑄(zhu)鐵(tie)的機(ji)(ji)械(xie)性(xing)(xing)能越高(gao)。方(fang)箱工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)適用(yong)于各種(zhong)檢驗(yan)工(gong)(gong)(gong)(gong)作(zuo)(zuo)，好(hao)的使(shi)用(yong)效果還要達(da)到生產和使(shi)用(yong)雙方(fang)都有互惠互利的原則(ze)。通(tong)常按用(yong)途把方(fang)箱工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)進(jin)行(xing)(xing)分(fen)類(lei)，如(ru)jingmi測(ce)量(liang)；各種(zhong)機(ji)(ji)床機(ji)(ji)械(xie)的檢驗(yan)測(ce)量(liang)；檢查零件的尺寸度、行(xing)(xing)位偏差，并(bing)作(zuo)(zuo)出jingmi劃(hua)線。方(fang)箱工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)是機(ji)(ji)床、機(ji)(ji)械(xie)制造(zao)、電(dian)子生產等20多種(zhong)行(xing)(xing)業不(bu)可缺少的產品。方(fang)箱工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)亦是劃(hua)線、測(ce)量(liang)、鉚焊(han)、工(gong)(gong)(gong)(gong)裝工(gong)(gong)(gong)(gong)藝不(bu)可以缺少的工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)，方(fang)箱工(gong)(gong)(gong)(gong)作(zuo)(zuo)臺(tai)(tai)也可以做機(ji)(ji)械(xie)試驗(yan)臺(tai)(tai)。表面(mian)微觀質(zhi)量(liang)好(hao)，耐磨損(sun)，則(ze)鑄(zhu)鐵(tie)平板使(shi)用(yong)壽命高(gao)。越均勻，包括工(gong)(gong)(gong)(gong)作(zuo)(zuo)面(mian)加工(gong)(gong)(gong)(gong)的微觀質(zhi)量(liang)和工(gong)(gong)(gong)(gong)作(zuo)(zuo)面(mian)小(xiao)范圍(wei)內的局(ju)部變化。經孕育處(chu)理(li)后的鑄(zhu)鐵(tie)，不(bu)僅其(qi)強(qiang)度有很大提高(gao)，而且塑形(xing)和韌性(xing)(xing)也有所提高(gao).