對20塊平板所做的磨損情況調查結果為：2塊河北泊頭鑄鐵平板，一塊(kuai)(kuai)使(shi)用(yong)(yong)在(zai)(zai)5年以(yi)上(shang)，仍在(zai)(zai)正常使(shi)用(yong)(yong)；另(ling)一導體使(shi)用(yong)(yong)也在(zai)(zai)5年以(yi)上(shang)，由于保管不善，造(zao)成銹蝕(shi)進行了xiufu。其余18塊(kuai)(kuai)外省市刮研的鑄鐵平板，使(shi)用(yong)(yong)時間均為1年，經檢定，10塊(kuai)(kuai)磨損嚴重已經不合格(ge)，需要(yao)重新(xin)xiufu；8塊(kuai)(kuai)仍可使(shi)用(yong)(yong)，但已出一部分bandian連片(pian)現象。

　　對刮(gua)(gua)研(yan)shendu作(zuo)一簡單處理(li)取其平(ping)(ping)(ping)均值，1號平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)刮(gua)(gua)研(yan)shendu為(wei)37.36微米(mi)，2號平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)刮(gua)(gua)研(yan)shendu為(wei)9.06微米(mi)，二者相差(cha)3倍(bei)之多(duo)。根(gen)據磨(mo)(mo)擦(ca)(ca)曲線(xian)(xian)損量與(yu)磨(mo)(mo)擦(ca)(ca)時間的關系，平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)使(shi)用(yong)始(shi)終處于初期磨(mo)(mo)損階(jie)段，曲線(xian)(xian)呈(cheng)線(xian)(xian)性，磨(mo)(mo)損量與(yu)磨(mo)(mo)擦(ca)(ca)時間成正比。由于平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)磨(mo)(mo)損情(qing)況的調(diao)查可知，河北泊頭(tou)平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)使(shi)用(yong)壽(shou)命為(wei)瓦房店平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)的5倍(bei)。顯而易見，刮(gua)(gua)研(yan)shendu對平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)使(shi)用(yong)壽(shou)命的影(ying)響是不(bu)可忽略(lve)的。JJG 117-91平(ping)(ping)(ping)板(ban)(ban)(ban)(ban)檢定規(gui)程對刮(gua)(gua)研(yan)shendu沒有做(zuo)出規(gui)定，這無疑是一種(zhong)缺陷(xian)。