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(guan)質量(liang)是加(jia)工(gong)(gong)(gong)(gong)(gong)表(biao)面小(xiao)(xiao)間距微小(xiao)(xiao)峰谷不(bu)平度(du)，鑄(zhu)鐵(tie)的(de)(de)(de)機(ji)械(xie)性能越高(gao)。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)適用(yong)于(yu)各(ge)種檢驗(yan)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)，好的(de)(de)(de)使用(yong)效果還(huan)要達到(dao)生產和(he)使用(yong)雙(shuang)方(fang)都有(you)(you)互(hu)惠互(hu)利的(de)(de)(de)原則。通(tong)常(chang)按用(yong)途把方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)進行(xing)(xing)分類(lei)，如jingmi測量(liang)；各(ge)種機(ji)床機(ji)械(xie)的(de)(de)(de)檢驗(yan)測量(liang)；檢查零件的(de)(de)(de)尺寸(cun)度(du)、行(xing)(xing)位偏差，并作(zuo)(zuo)(zuo)(zuo)出jingmi劃線。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)是機(ji)床、機(ji)械(xie)制造、電子生產等20多種行(xing)(xing)業不(bu)可(ke)缺(que)少的(de)(de)(de)產品(pin)。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)亦是劃線、測量(liang)、鉚(liu)焊、工(gong)(gong)(gong)(gong)(gong)裝工(gong)(gong)(gong)(gong)(gong)藝(yi)不(bu)可(ke)以缺(que)少的(de)(de)(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)，方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)也可(ke)以做機(ji)械(xie)試驗(yan)臺(tai)(tai)。表(biao)面微觀(guan)質量(liang)好，耐磨損，則鑄(zhu)鐵(tie)平板使用(yong)壽(shou)命高(gao)。越均勻，包括工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)面加(jia)工(gong)(gong)(gong)(gong)(gong)的(de)(de)(de)微觀(guan)質量(liang)和(he)工(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)面小(xiao)(xiao)范(fan)圍內的(de)(de)(de)局(ju)部(bu)變(bian)化。經孕育處(chu)理后(hou)的(de)(de)(de)鑄(zhu)鐵(tie)，不(bu)僅(jin)其強度(du)有(you)(you)很大提高(gao)，而且塑形和(he)韌性也有(you)(you)所提高(gao).