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、配重鐵(tie)(tie)微觀質(zhi)量是加(jia)工(gong)(gong)(gong)(gong)(gong)表(biao)(biao)面(mian)小(xiao)間(jian)距微小(xiao)峰(feng)谷(gu)不(bu)(bu)平度(du)，鑄(zhu)鐵(tie)(tie)的(de)(de)(de)機(ji)械性能越(yue)高(gao)。方(fang)箱工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)適用(yong)(yong)于各(ge)種(zhong)檢驗(yan)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)，好的(de)(de)(de)使用(yong)(yong)效果(guo)還要達到生產(chan)和(he)使用(yong)(yong)雙方(fang)都有互(hu)惠互(hu)利的(de)(de)(de)原則(ze)。通常按用(yong)(yong)途把方(fang)箱工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)進行(xing)分類，如jingmi測量；各(ge)種(zhong)機(ji)床機(ji)械的(de)(de)(de)檢驗(yan)測量；檢查(cha)零件的(de)(de)(de)尺寸度(du)、行(xing)位偏差，并作(zuo)(zuo)(zuo)出jingmi劃線(xian)。方(fang)箱工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)是機(ji)床、機(ji)械制造、電子(zi)生產(chan)等20多(duo)種(zhong)行(xing)業不(bu)(bu)可缺少的(de)(de)(de)產(chan)品。方(fang)箱工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)亦是劃線(xian)、測量、鉚焊、工(gong)(gong)(gong)(gong)(gong)裝工(gong)(gong)(gong)(gong)(gong)藝不(bu)(bu)可以缺少的(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)，方(fang)箱工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)臺(tai)也可以做機(ji)械試驗(yan)臺(tai)。表(biao)(biao)面(mian)微觀質(zhi)量好，耐磨損(sun)，則(ze)鑄(zhu)鐵(tie)(tie)平板(ban)使用(yong)(yong)壽命高(gao)。越(yue)均勻，包括工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)面(mian)加(jia)工(gong)(gong)(gong)(gong)(gong)的(de)(de)(de)微觀質(zhi)量和(he)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)面(mian)小(xiao)范圍內(nei)的(de)(de)(de)局部變化。經孕育處(chu)理后的(de)(de)(de)鑄(zhu)鐵(tie)(tie)，不(bu)(bu)僅其強度(du)有很大提高(gao)，而且塑形和(he)韌(ren)性也有所提高(gao).