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(pei)重鐵微觀質量是加工(gong)(gong)(gong)(gong)(gong)表面小(xiao)(xiao)間距微小(xiao)(xiao)峰谷不(bu)平度，鑄鐵的(de)機械(xie)性能(neng)越高。方(fang)(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)適用于(yu)各(ge)(ge)種(zhong)檢(jian)(jian)驗工(gong)(gong)(gong)(gong)(gong)作(zuo)，好的(de)使(shi)(shi)用效果還要達到(dao)生產和使(shi)(shi)用雙(shuang)方(fang)(fang)都有互惠互利的(de)原則。通(tong)常按用途(tu)把(ba)方(fang)(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)進行(xing)分類(lei)，如jingmi測量；各(ge)(ge)種(zhong)機床機械(xie)的(de)檢(jian)(jian)驗測量；檢(jian)(jian)查零件(jian)的(de)尺(chi)寸度、行(xing)位(wei)偏差，并作(zuo)出jingmi劃線。方(fang)(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)是機床、機械(xie)制造、電(dian)子(zi)生產等20多種(zhong)行(xing)業不(bu)可(ke)缺少的(de)產品。方(fang)(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)亦是劃線、測量、鉚焊、工(gong)(gong)(gong)(gong)(gong)裝工(gong)(gong)(gong)(gong)(gong)藝不(bu)可(ke)以(yi)(yi)缺少的(de)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)，方(fang)(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)作(zuo)臺(tai)也可(ke)以(yi)(yi)做機械(xie)試驗臺(tai)。表面微觀質量好，耐磨損，則鑄鐵平板使(shi)(shi)用壽命高。越均勻，包括工(gong)(gong)(gong)(gong)(gong)作(zuo)面加工(gong)(gong)(gong)(gong)(gong)的(de)微觀質量和工(gong)(gong)(gong)(gong)(gong)作(zuo)面小(xiao)(xiao)范圍(wei)內的(de)局部變(bian)化。經孕育處理后的(de)鑄鐵，不(bu)僅其強度有很大提高，而且(qie)塑形和韌(ren)性也有所提高.