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(wei)觀(guan)質(zhi)量(liang)(liang)(liang)是加工(gong)(gong)(gong)(gong)(gong)(gong)(gong)表面(mian)(mian)小(xiao)間(jian)距微(wei)小(xiao)峰谷不平度，鑄(zhu)鐵(tie)(tie)的(de)機(ji)(ji)械性能越高。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)適(shi)用(yong)于各(ge)種(zhong)(zhong)檢驗工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)，好(hao)的(de)使用(yong)效(xiao)果還要達到生(sheng)產和(he)使用(yong)雙方(fang)都有互(hu)惠互(hu)利的(de)原(yuan)則。通常(chang)按(an)用(yong)途(tu)把(ba)方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)進行(xing)(xing)分類，如jingmi測(ce)量(liang)(liang)(liang)；各(ge)種(zhong)(zhong)機(ji)(ji)床(chuang)機(ji)(ji)械的(de)檢驗測(ce)量(liang)(liang)(liang)；檢查零件的(de)尺寸(cun)度、行(xing)(xing)位偏差(cha)，并作(zuo)(zuo)(zuo)(zuo)出jingmi劃(hua)線(xian)。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)是機(ji)(ji)床(chuang)、機(ji)(ji)械制(zhi)造、電子生(sheng)產等20多種(zhong)(zhong)行(xing)(xing)業不可缺少的(de)產品。方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)亦是劃(hua)線(xian)、測(ce)量(liang)(liang)(liang)、鉚焊、工(gong)(gong)(gong)(gong)(gong)(gong)(gong)裝工(gong)(gong)(gong)(gong)(gong)(gong)(gong)藝不可以缺少的(de)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)，方(fang)箱(xiang)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)臺(tai)(tai)也可以做機(ji)(ji)械試(shi)驗臺(tai)(tai)。表面(mian)(mian)微(wei)觀(guan)質(zhi)量(liang)(liang)(liang)好(hao)，耐磨損，則鑄(zhu)鐵(tie)(tie)平板(ban)使用(yong)壽(shou)命高。越均勻，包括工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)面(mian)(mian)加工(gong)(gong)(gong)(gong)(gong)(gong)(gong)的(de)微(wei)觀(guan)質(zhi)量(liang)(liang)(liang)和(he)工(gong)(gong)(gong)(gong)(gong)(gong)(gong)作(zuo)(zuo)(zuo)(zuo)面(mian)(mian)小(xiao)范圍內的(de)局部(bu)變化。經孕育處理(li)后的(de)鑄(zhu)鐵(tie)(tie)，不僅其強度有很大(da)提(ti)高，而(er)且塑形和(he)韌(ren)性也有所提(ti)高.